PRESSESERVICE

MENZEL

Plug & play compressor motor for Tata Steel

Menzel Elektromotoren has customized a motor for a compressor drive operated by Tata Steel, shipping it within just two weeks. A motor failure had stalled the booster air compressor, which is integral to one of the corporation’s Indian steelworks, providing oxygen necessary for steel production.

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Menzel Elektromotoren has customized a motor for a compressor drive operated by Tata Steel, shipping it within just two weeks. A motor failure had stalled the booster air compressor, which is integral to one of the corporation’s Indian steelworks, providing oxygen necessary for steel production. Thanks to its modular warehousing strategy, Menzel was able to speedily configure a squirrel-cage motor in accordance with customer specifications. The MEBKSL-type motor was electrically and mechanically adapted to enable installation and commissioning by the customer without further modifications of the motor or the site. The motor with an operating voltage of 6600 V and a rated power of 3200 kW was fitted with an air-to-air heat exchanger (cooling type IC 611). Menzel staff at the Berlin plant shortened the motor shaft, milled the shaft end, and produced intermediate plates to adjust the fixing dimensions to the existing installation site. The 2-pole motor was designed with sleeve bearings with 2-wedge bearing shells to avoid any critical speed in the vicinity of the operating point of 2987 rpm. The motor is also designed for demanding conditions with ambient temperatures up to 50 °C and humidity up to 95%. It features a tropicalized motor winding in temperature class „F“ and the increased protection class IP55. Menzel manufactures motors for large industrial compressors in various types and offers several feature options. The company’s large stock includes several series of squirrel-cage and slip ring motors with air or water cooling or open-circuit ventilation, optionally with self-ventilation or forced ventilation, and prepared for inverter operation.
More customer references: https://www.menzel-motors.com/compressor-drive/

date: 2020-09-22 | characters: 1674 | download: document, picture 1

MENZEL

New synchronous generator more economic than repair

Menzel Great Britain Ltd has supplied a synchronous generator with a power rating of 11380 kVA to Westfield Power Station in Scotland. The plant operated by the Independent Power Producer (IPP) Melton Renewable Energy UK Ltd had suffered a failure of the existing generator.

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Menzel Great Britain Ltd has supplied a synchronous generator with a power rating of 11380 kVA to Westfield Power Station in Scotland. The plant operated by the Independent Power Producer (IPP) Melton Renewable Energy UK Ltd had suffered a failure of the existing generator. Purchasing the replacement generator, which was delivered in only two weeks, was significantly more cost-effective than a lengthy repair, as the IPP may incur revenue losses when the power supply is interrupted. It was fortuitous that a synchronous generator of suitable rating and performance class was readily available on the market, as this application and configuration are very rare, and such generators are usually manufactured with long lead times. Menzel Great Britain is a subsidiary of German motor manufacturer Menzel Elektromotoren who maintains a very extensive inventory and is specialized on customized adaptations on short notice and who was therefore well prepared to answer this urgent request. The generator is powered by a steam turbine. It operates at 11 kV supply voltage and weighs more than 35 tons. Menzel completed the various customer-specific interface modifications in the short time available. Preparing the shaft to match coupling interfaces was particularly complex, since it had to be shortened, machined for a smaller diameter, and the appropriate flange had to be weld-fitted and subjected to an ultrasound check, which ensured that the modification was sound. In order to match site requirements, Menzel also changed the cooling type of the replacement generator from IC 01 open-circuit ventilated to IC 81W air-water heat exchanger, building an adapter frame and mounting a suitable twin element heat exchanger from existing stock. Westfield Power Station, which was commissioned in 2000, is the only biomass power plant in Scotland fueled by poultry litter. It is a key partner to the region’s agricultural industry both for disposing of a high-volume waste product and as a supplier of power and fertilizer – the nutrient-rich ash produced is a precious natural alternative to artificial fertilizers. The 9.8 MW biomass steam power plant also stands out technologically as it is one of a limited few in the world utilizing fluidized bed technology. The CO2 savings compared to gas-fired power plants are considerable.
Three-phase synchronous and asynchronous generators for highest efficiencies: https://www.menzel-motors.com/specialized-motors/generators/

date: 2020-09-01 | characters: 2330 | download: document, picture 1

MENZEL

Pump works, summer is saved

Baden-WĂĽrttemberg state water supply, a German special-purpose association, urgently needed a new motor for a pump that is only used at peak times during the summer. Since Menzel Elektromotoren had already proven itself as a reliable supplier in the past, nothing was more obvious than a quick call to the Berlin-based manufacturer.

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Baden-WĂĽrttemberg state water supply, a German special-purpose association, urgently needed a new motor for a pump that is only used at peak times during the summer. Since Menzel Elektromotoren had already proven itself as a reliable supplier in the past, nothing was more obvious than a quick call to the Berlin-based manufacturer. Menzel has the largest inventory of industrial motors in Europe and had a suitable three-phase slip ring rotor motor on hand, with a 710 mm shaft height, 3700 kW rated power, and 5000 V rated voltage. A member of staff took the measurements on site in the pumphouse. Since the old, failed motor had a flanged shaft with a permanently fixed coupling half, Menzel procured a new coupling half. The team also welded a base frame to bring the new, more compact motor to the shaft height of original. The existing installation was special in that all supply lines were fed in from below. Therefore, new cable ducts were implemented in the station floor next to the motor, whilst Menzel repositioned the terminal boxes. Menzel staff also commissioned the motor and could therefore check firsthand that the installation was complete and subsequent startup was flawless. Menzel has manufactured pump motors for a wide range of applications in the past. More information is available at https://www.menzel-motors.com/pump-drive/.

date: 2020-06-18 | characters: 1329 | download: document, picture 1

MENZEL

12-pole extruder motor

Menzel Elektromotoren has supplied a 12-pole 225-kW motor for a rubber mixing machine. Though this large number of poles is unusual for such a relatively small output, the German motor builder had a suitable unit on stock in its large warehouse. The motor is configured for frequency inverter operation in 60-Hz networks.

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Menzel Elektromotoren has supplied a 12-pole 225-kW motor for a rubber mixing machine. Though this large number of poles is unusual for such a relatively small output, the German motor builder had a suitable unit on stock in its large warehouse. The motor is configured for frequency inverter operation in 60-Hz networks. The rated speed is 710 min-1. This robust motor provides high starting torques and high overload capacities at low speeds. The customer, the global market leader in production of elastomeric insulation systems for thermal and acoustic insulation, needed this motor for a plant in Mexico. To ensure commissioning of the facility on schedule, Menzel adapted the motor in only three and a half weeks. This included a newly engineered and individually welded motor housing that is compatible with the customer’s special coupling and existing foundation interfaces. More reference projects and inquiries: https://www.menzel-motors.com/extruder-drive/

date: 2020-05-27 | characters: 882 | download: document, picture 1

MENZEL

High-voltage compressor motor for steelworks

Linde India Ltd. was able to quickly source a new 11-MW high-voltage motor for a compressor in a steel plant from German manufacturer Menzel Elektromotoren. After the originally installed third-party motor had failed, downtime in the plant in the eastern state of Odisha could thus be kept short.

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Linde India Ltd. was able to quickly source a new 11-MW high-voltage motor for a compressor in a steel plant from German manufacturer Menzel Elektromotoren. After the originally installed third-party motor had failed, downtime in the plant in the eastern state of Odisha could thus be kept short. Menzel has an extensive inventory, which is adapted to the demand. The motor manufacturer picked a modular squirrel-cage motor from its MEBKSW series for this project. These motors are by default very well adapted to the ambient conditions with temperatures up to 50 °C and a humidity of up to 95 %. Their tropics-proof motor winding conforms with temperature class F. Menzel fitted the motor with an air-to-water heat exchanger (cooling type IC 81W), which is ideal for environments with high humidity and highly polluted atmosphere, and implemented an increased IP55 ingress protection. Menzel also made several mechanical and electrical adjustments to ensure smooth installation on site. One noteworthy challenge was that the original terminal box, complete with the sensors installed inside, should be moved to the new motor. To accomplish this Menzel not only manufactured a mounting adapter, but also changed the winding ends and routed them from the overhang to the terminal box along the side of the motor housing. Menzel furthermore built a base frame to adapt the motor size and mounting dimensions to the existing foundation. The motor with a rated voltage of 11 kV is designed for 50-Hz operation with a rated speed of 1492 min-1 in continuous operation (operating mode S1). Its total weight is 23.5 tons. Before shipping, the motor underwent extensive tests in Menzel’s load test field with the customer present. The manufacturer was also in charge of commissioning. More information about water-cooled squirrel-cage motors for extreme ambient conditions is available at https://www.menzel-motors.com/squirrel-cage-motor/ic81w-ic86w/.

date: 2020-04-29 | characters: 1942 | download: document, picture 1

MENZEL

Despite coronavirus: Large motors ex stock

German motor builder Menzel Elektromotoren keeps a large inventory of motors in stock and is able to fulfill orders even in these times of the coronavirus. The family-run company is the go-to-source when motor failures cause plant standstills or if the usual suppliers cannot maintain delivery dates.

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German motor builder Menzel Elektromotoren keeps a large inventory of motors in stock and is able to fulfill orders even in these times of the coronavirus. The family-run company is the go-to-source when motor failures cause plant standstills or if the usual suppliers cannot maintain delivery dates. Quick shipping of replacement motors has oftentimes prevented production downtimes in the past. Brand-new AC and DC motors are available in various sizes and cooling types: low-voltage motors up to 2500 kW, medium and high-voltage motors up to 15000 kW, AC squirrel-cage and slip ring motors, DC motors up to 600 kW. All these motors comply with the current EN60034, IEC60034, VDE, DIN, and ISO standards. Menzel supplies customers worldwide, adapting the motors individually for each respective customer application. Production and inspection are still being kept up, even now, with staff working two separate shifts and additional measures being taken for maximum protection against infection. More information and 24/7 inquiries: https://www.menzel-motors.com/article/large-lv-mv-hv-motors/

date: 2020-03-30 | characters: 996 | download: document, picture 1

MENZEL

Motors for swift shipping

Menzel Elektromotoren has modified, tested, and delivered two 2400-kW motors for the fast RoPax ferry MV Ulysses meeting extremely tight deadlines of two and three weeks. Operated by Irish Ferries, Ulysses is one of the largest ferries in the world servicing the busy Dublin—Holyhead route.

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Menzel Elektromotoren has modified, tested, and delivered two 2400-kW motors for the fast RoPax ferry MV Ulysses meeting extremely tight deadlines of two and three weeks. Operated by Irish Ferries, Ulysses is one of the largest ferries in the world servicing the busy Dublin—Holyhead route. It has 12 decks for up to 2000 passengers and 1340 cars or 240 trucks. The operator urgently needed new motors for two of the four azimuth thrusters – propellers used for sideways maneuvering in ports. One of the German motor builder’s experienced service staff took measurements on site in order to adhere to tight refit specifications and timelines, and to avoid the kind of installation difficulties caused by earlier replacement motors. Menzel adapted two squirrel-cage motors from their large inventory of motors and components for many common applications. The selected motors are by default suitable for high humidity environments. Menzel provided them with IP54 protection for maritime application and made numerous additional adjustments in the shortest possible time. The team converted the stock motors from horizontal to vertical operation, modifying the bearings accordingly, installing new thrust bearings, and producing a special vertical-mounting flange. They dismantled and re-configured the fan design in order to change the rotational direction. They shortened the shafts and machined them for smaller diameters. To meet the vessel’s mechanical interfaces, the terminal boxes had to be installed in exactly the right position; even the arrangement of the terminal studs was predetermined. The customer provided the water coolers, whilst Menzel modified the stator frames to connect the coolers, implementing cooling type IC 81W. Ultimately, the manufacturer tested the motors in their own load test field, with the customer present on site in Berlin for the final inspection. Menzel completed both motors on time, thus once again proving themselves to be an exceptionally flexible supplier. More information about modular squirrel-cage motors with a wide range of design options is available at https://www.menzel-motors.com/squirrel-cage-motor/ic81w-ic86w/.

date: 2020-03-18 | characters: 2166 | download: document, picture 1

MENZEL

High-powered dual-speed medium voltage motors

Berlin-based Menzel Elektromotoren is one of the few manufacturers of large dual-speed or pole-changing low and medium voltage motors today.

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Berlin-based Menzel Elektromotoren is one of the few manufacturers of large dual-speed or pole-changing low and medium voltage motors today. This motor type can propel fans, pumps, hoists, and other machines at two different speeds without a frequency inverter – a cost-saving solution for applications requiring only two speeds that moreover reduces the risk of failure. Typically, these motors are designed for an operating speed and a slower speed to facilitate startup. Dual-speed designs of large motors have become a rare exception. However, the family-run company Menzel continues to offer this option. In a current project, the end customer had explicitly specified pole-changing motors. To implement the particular speed ratios, Menzel manufactured three-phase asynchronous motors with two independent stator windings, a 6-pole and an 8-pole winding combined in one housing. The motors intended to power fans in a cement plant have a rated voltage of 6000 V with rated operating speeds of 988 min-1 and 746 min-1 at rated outputs of 850 kW and 500 kW respectively. As another special feature, these customized motors withstand ambient temperatures from -38 °C to 40 °C. Menzel, a motor manufacturer serving customers worldwide, individually assesses requests for larger low and medium voltage motors for optimum feasibility whilst supporting customers in choosing the right solution. Additional references as well as contact details for specialized technical staff can be found at https://www.menzel-motors.com/article/dual-speed-motors/. Hannover Messe: Hall 5, Stand C36

date: 2020-02-26 | characters: 1546 | download: document, picture 1

MENZEL

Hannover Messe: Waterproof and water-jacket-cooled motors

At the 2020 Hannover Messe, Menzel Elektromotoren will focus on motors with IP67 ingress protection. Menzel’s subsidiary Franz Wölfer Elektromaschinenfabrik will showcase its newly developed water-jacket-cooled motor. Menzel specializes in short-term production of large-scale industrial motors.

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At the 2020 Hannover Messe, Menzel Elektromotoren will focus on motors with IP67 ingress protection. Menzel’s subsidiary Franz Wölfer Elektromaschinenfabrik will showcase its newly developed water-jacket-cooled motor. Menzel specializes in short-term production of large-scale industrial motors. The Berlin-based manufacturer is now increasing its stock of IP67 components in order to also enable shorter delivery times for this type of motor. IP67 motors resist ingress of water even if temporarily submerged. Enquiries for this protection class usually concern flood-prone pumping stations and maritime applications. The manufacturer offers optional IPX7 TĂśV tests. The three-phase asynchronous motors are available with squirrel cage rotors or slipring rotors with outputs from 37 kW to 1,500 kW, with voltages from 380 V to 13,800 V, up to and including size 500. Menzel fits waterproof encapsulated motor housings and clamping boxes and ensures assembly with minimum tolerances. When the water has receded after a flooding, the motors are ready to be switched on again immediately. Menzel subsidiary Wölfer will present the prototype of a new totally enclosed water-jacket-cooled motor series for frequency inverter operation, which was successfully tested with a rated power of 230 kW in operating mode S1 – continuous operation. The market launch of this new motor generation with water jacket cooling will take place later this year. 4-pole and 6-pole versions from size 180 to 450 are planned. These IP56 motors are more compact, lighter, and more dynamic than TEFC motors. In addition to Wölfer’s established core markets offshore floating cranes and winch drives, target applications also include mining, steelworks, and naval propulsion drives. Delegates and trade fair visitors are invited to discuss their need for drive solutions with asynchronous motors up to 20 MW and DC motors up to 2000 kW with the team at the booth. Menzel is committed to always maintaining the same high level of quality even in fulfilling unusual customer requests.
Menzel at Hannover Messe, 20 – 24 April 2020 Hall 5, Stand C36
Read on
…about IP67 ingress protection and Menzel IP67 motors: https://www.menzel-motors.com/specialized-motors/ip67-motor/
…about Wölfer electric motors: https://www.woelfer-motoren.com/

date: 2020-02-05 | characters: 2054 | download: document, picture 1

MENZEL

Vertical motors for iron ore mill

Menzel Elektromotoren has built two replacement motors with special characteristics for an iron ore mill: slipring motors with cooling type IC 511 for vertical mounting on gearboxes. Each of these attributes is in itself unusual; the combination of all three required a particularly complex new construction.

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Menzel Elektromotoren has built two replacement motors with special characteristics for an iron ore mill: slipring motors with cooling type IC 511 for vertical mounting on gearboxes. Each of these attributes is in itself unusual; the combination of all three required a particularly complex new construction. The existing motors of a different make had repeatedly experienced problems. Having successfully worked with Menzel before, the steelworks operator commissioned identical motors with the same performance characteristics, but for failsafe operation. Special solutions are routine business for the German motor manufacturer who was therefore well-prepared to equip the two 10-ton motors with tube cooling systems. One of the advantages of this design’s is the robust, torsion-resistant welded-steel housing that also provides very good re-cooling and is less prone to fouling compared to rib-cooled motors, as well as showing better resistance to vibration and shocks. Menzel tested the motors rated 1120 kW, 6600 V in its own test field before shipping. The customer took the opportunity to observe these tests in the company’s test area, which all customers are invited to do. More information about motors with cooling type IC 511 is available at https://www.menzel-motors.com/slip-ring-motor/ic511/.

date: 2019-11-13 | characters: 1310 | download: document, picture 1

MENZEL

Water-cooled 600-kW compressor motor

Menzel Elektromotoren has supplied a specifically configured modular slipring motor from its MEBSSW range to drive a reciprocating compressor operating in a dusty atmosphere at high ambient temperatures.

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Menzel Elektromotoren has supplied a specifically configured modular slipring motor from its MEBSSW range to drive a reciprocating compressor operating in a dusty atmosphere at high ambient temperatures. In addition to implementing IP55 ingress protection and cooling type IC 81W (air-to-water heat exchanger), Menzel mounted two oil coolers directly on the motor housing for re-cooling of the sleeve bearings. The German motor manufacturer worked closely with a longstanding customer to understand existing site issues. The 600-kW motor is intended to replace an air-cooled motor featuring a lower protection class, IP23. Due to the new totally enclosed air circuit (CACW), there will be no more problems with small particle dust or dirt inside the motor, ensuring higher operational availability at ambient temperatures well over 40 °C. The new motor has an operating voltage of 3000 V and a rated speed of 491 rpm. It offers superior reliability, higher efficiency, low noise emissions along with lower operating and maintenance costs at a compact frame size and low weight. Menzel’s range of modular slipring motors enables quick application-specific adaptation of cooling and protection types and flexible fitting of various extras, as required. The company has also configured this motor to match the electrical and mechanical interfaces of the existing motor to ensure speedy installation without modifications on site. The customer is one of the leading Italian chemical companies producing a full range of industrial gases. Menzel builds industrial motors up to 20 MW in a wide range of designs. More information about customized motors is available at https://www.menzel-motors.com/modification/.

date: 2019-10-16 | characters: 1706 | download: document, picture 1

MENZEL

Express delivery of a 10-ton pump motor

After a pump motor failure at a gas-fired power plant in Chile, Menzel Elektromotoren manufactured a replacement in just three weeks. The 10-ton 6600 kV, 50 Hz squirrel-cage motor provides 2500 kW rated power.

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After a pump motor failure at a gas-fired power plant in Chile, Menzel Elektromotoren manufactured a replacement in just three weeks. The 10-ton 6600 kV, 50 Hz squirrel-cage motor provides 2500 kW rated power. Menzel was able to quickly fulfill the urgent order due to the company’s unique policy of maintaining standard components for the most common industrial applications with outputs up to 18 MW always in stock with project-specific configuration performed in-house. In this case, this meant completely rebuilding the off-the-shelf motor. As a particular challenge, the motor had to perfectly fit the same mechanical interfaces with the existing base. Menzel therefore had to cut open the housing and adjust the footprint. Further necessary measures included changing the sleeve bearings from self-lubrication to forced oil lubrication and repositioning the terminal boxes. In addition, Menzel shortened and re-milled the shaft along with rebalancing the rotor. The customer project entailed comprehensive technical coordination to ensure smooth commissioning and operation. The customer, a major global pump manufacturer from Germany, had a personal contact in Menzel’s technical office, ensuring optimal support. After in-house testing, Menzel dispatched the pump motor to Chile by air. At the same time, Menzel received a follow-up order: to ensure they do not encounter another unscheduled standstill, the end customer has ordered an identical reserve motor. This time, the motor manufacturer has a little bit more leisure to approach the job – with a delivery period of one month. Menzel has manufactured pump motors for a wide range of applications in the past. More information is available at https://www.menzel-motors.com/pump-drive/.

date: 2019-09-25 | characters: 1747 | download: document, picture 1

MENZEL

Large low voltage motors for special applications

Menzel Elektromotoren has built eight low voltage motors with a shaft height of 500 mm for a rolling mill. The company, which specializes in tailor-made solutions, played to its strengths in this project by building the mill drives from scratch, according to the plant manufacturer’s requirements, while meeting a very tight 16 week timeline.

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Menzel Elektromotoren has built eight low voltage motors with a shaft height of 500 mm for a rolling mill. The company, which specializes in tailor-made solutions, played to its strengths in this project by building the mill drives from scratch, according to the plant manufacturer’s requirements, while meeting a very tight 16 week timeline. The technologically demanding and high-end design ensures reliable operation under high mechanical stress. Robust welded steel housings ensure maximum torsional rigidity. At the customer’s request, Menzel implemented a water cooling system (cooling type IC 86W). The motors feature a rated voltage of 690 V and provide 1000 kW rated power. Menzel designed them for the application-specific load points at a nominal frequency of 25 Hz and installed a special rotary encoder for inverter operation. The customer is completely satisfied and has already placed a follow-up order for four additional motors of the same type. More information is available at: https://www.menzel-motors.com/squirrel-cage-motor/ic81w-ic86w/

date: 2019-09-04 | characters: 962 | download: document, picture 1

MENZEL

Menzel goes digital and stays flexible

Menzel Elektromotoren has transferred to digital order management. As a result, the manufacturer of large industrial motors has shortened its response times and improved the quality of operational processes, whilst creating transparency through a unified data base, which is available to every employee in real time.

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Menzel Elektromotoren has transferred to digital order management. As a result, the manufacturer of large industrial motors has shortened its response times and improved the quality of operational processes, whilst creating transparency through a unified data base, which is available to every employee in real time. From product inquiries to manufacturing processes and intralogistics, all data is now entered and transmitted electronically. Using the latest Human Interface (HID) tablet computers, staff can instantly document production progress, order material via an ERP interface, and access a comprehensive archive of technical drawings, checklists, guidelines, and manuals. By scanning the QR code on a drive system, employees and customers can easily access associated documentation at any time. Technical documentation for the customer can be automatically generated in up to seven languages in no time at all, thanks to a translation program especially implemented for Menzel. Time-consuming data synchronization and media disruption have been effectively eliminated. Paperless data transfer and direct, automatic plausibility checks of inputs have improved data quality, whilst significantly reducing errors. Each production step is tracked and monitored, which increases inhouse transparency and process integrity. This allows for even better customer service. Menzel embraces the opportunities offered by the latest digital technologies, continuing to differentiate itself from the market to ensure fast and flexible fulfillment of customer requirements. Standardized, user-friendly processes as well as efficient information flows lay the basis for this. Further exciting digitization projects are already at advanced planning stages, all aiming to continuously improve manufacturing processes and provision of customer-focused, state-of-the-art three-phase asynchronous motors and DC motors for any application. Direct request for industrial motors available worldwide: https://www.menzel-motors.com/enquiry/

date: 2019-06-19 | characters: 1926 | download: document, picture 1

MENZEL

Ex nA motor for the oil industry on short notice

Following an urgent request for assistance, Menzel Elektromotoren has shipped one of its biggest motors yet: the squirrel-cage motor has an 800 mm frame size and a combined weight of over 33 tons including an air to air heat exchanger, external fans, and a custom terminal box.

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Following an urgent request for assistance, Menzel Elektromotoren has shipped one of its biggest motors yet: the squirrel-cage motor has an 800 mm frame size and a combined weight of over 33 tons including an air to air heat exchanger, external fans, and a custom terminal box. It replaces a failed compressor drive used for gas compression in an oil field. By shipping the motor within three weeks from receiving the order, Menzel ensured the continued operation of the plant, saving the customer high downtime costs. The Berlin-based company offers a unique service, standing out among other motor suppliers for its exceptionally large and diverse inventory. Menzel did not need to build the oversized motor from scratch but had it in stock, which reduced the delivery time by more than six months. The customer-focused team ensured smooth installation and reliable function of the drive, making various complex mechanical and electrical adjustments and providing expert service. Work for the high-priority project was also carried out on weekends. A member of staff took the measurements on site in Algeria. The rated power of the stocked motor was adjusted from 14 MW to 7.9 MW. In adapting this existing unit for this application, Menzel welded a frame for guiding the airflow in a closed cooling circuit. The shaft was shortened, milled to the required diameter, and fitted with a new borehole. The rotor was re-balanced. The target application in the oil industry furthermore required an explosion-proof design: the adapted motor can be flushed with nitrogen before start-up. It got the Ex marking II3G Ex nA IIC T3 Gc. Menzel also integrated surge limit accessories and tested the motor with the customer present, who thus witnessed first-hand the motor’s impeccable performance. Menzel supervised installation and commissioning of the motor. Menzel presents its capabilities in customizing compressor motors on its case study web page at https://www.menzel-motors.com/compressor-drive/.

date: 2019-06-12 | characters: 1849 | download: document, picture 1

MENZEL

Menzel acquires Franz Wölfer Elektromaschinenfabrik

Seeking to expand its existing product portfolio, Menzel Elektromotoren GmbH is acquiring a majority stake in Franz Wölfer Elektromaschinenfabrik Osnabrück GmbH, a company that recently went into insolvency.

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Seeking to expand its existing product portfolio, Menzel Elektromotoren GmbH is acquiring a majority stake in Franz Wölfer Elektromaschinenfabrik OsnabrĂĽck GmbH, a company that recently went into insolvency. Menzel is now co-managing the business with Wölfer’s founding family to ensure that the production of high-quality Wölfer brand electric motors will continue in OsnabrĂĽck. Bolstered by support from all Menzel group companies, the manufacturer is set to regain its footing and expand from there. The new ownership structure does not lead to any changes to existing contractual relationships with customers. The owners are aiming to conclude the insolvency period as soon as possible. All contact persons remain available for customers as usual. Wölfer will contribute valuable additional know-how to the Menzel group of companies, notably regarding special low-voltage asynchronous motor design for hoisting machinery and the shipping industry. This complements the group’s existing portfolio in an ideal way. Menzel Elektromotoren GmbH manufactures and supplies custom electric motors for robust industrial applications, mainly in the power range of 200 to 15,000 kW. A major strategic strength is the construction and worldwide delivery of a variety of high-quality low-voltage, high-voltage and DC motors. An extensive range of units kept on stock ensures that Menzel is ready to deliver on short notice. Pawils Elektromaschinenbau GmbH, another member of the Menzel Group, can also benefit Wölfer customers by providing maintenance and repair services. Pawils handles electric motors and drive systems of any kind up to an output of several 1,000 kW and offers a flexible factory service.

date: 2019-05-15 | characters: 1550 | download: document, picture 1

MENZEL

Hannover Messe: Load-tested industrial motors

Menzel Elektromotoren shows a selection of motors from its huge portfolio at Hannover Messe and is looking forward to discussing individual drive solutions with trade fair visitors. The family-run company supplies customers around the world and specializes in project-specific configuration and fabrication of large industrial motors.

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Menzel Elektromotoren shows a selection of motors from its huge portfolio at Hannover Messe and is looking forward to discussing individual drive solutions with trade fair visitors. The family-run company supplies customers around the world and specializes in project-specific configuration and fabrication of large industrial motors. Menzel has many years of experience in a wide range of industries, including the cement industry, steel mills, mining, the process industry, and power plants. Menzel supplies and manufactures three-phase asynchronous motors with slipring rotors up to 15,000 kW and with squirrel cage rotors up to 25,000 kW as well as DC motors up to 2,000 kW. Applications range from conveyors to mills, pumps, fans, and many other drive applications. All drive solutions are put through thorough in-house test runs before shipping. Trade fair visitors can take a virtual tour at the booth of Menzel’s state-of-the-art load test field at the company’s Berlin headquarters. Make an appointment, order a free ticket, and read more at https://www.menzel-motors.com/article/meet-us-at-hannover-messe-hall-15-stand-f35/ Menzel at Hannover Messe, 1 – 5 April 2019 Hall 15, Stand F35

date: 2019-03-21 | characters: 991 | download: document, picture 1

MENZEL

Large roller table motors in small series and special designs

Menzel Elektromotoren supplies steelworks and mills with tailor-made robust roller table motors with nominal voltages up to 1000 V and up to 400 mm frame size. The family-run company, which specializes in large industrial motors, has the flexibility to manufacture small series of roller table motors or single units.

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Menzel Elektromotoren supplies steelworks and mills with tailor-made robust roller table motors with nominal voltages up to 1000 V and up to 400 mm frame size. The family-run company, which specializes in large industrial motors, has the flexibility to manufacture small series of roller table motors or single units. These TENV (totally enclosed non-ventilated) three-phase squirrel cage motors feature IC410 cooling type and thermal class F, or optionally H. The ring-fin motors come in a cast-iron housing or can be optionally fitted into a low-vibration welded steel housing. They are suitable for direct power supply as well as for inverter operation, and notably also for high-frequency reversing operation under load. The motors provide high nominal, acceleration, and breaking torques. They are low-maintenance, durable, and extremely robust under electrical, mechanical, and thermal stress. Menzel configures the frequencies and pole counts for high overall efficiency and implements speeds according to customer specifications. Special configurations with extremely high pole counts and low speeds make gearboxes unnecessary in many cases, reducing purchase costs and maintenance. The roller table motors feature IP55 ingress protection by default. On request, Menzel supplies IP67 units for especially demanding applications. Most recently, Menzel fulfilled an order of several roller table motors with an integrated brake, 7.7 kW rated power, and 490 rpm. Based on a specimen provided by the customer, these motors are engineering to match an original design by a motor manufacturer who went out of business. Readers can find more information and request a quote at https://www.menzel-motors.com/specialized-motors/roller-table-motors/.

date: 2019-02-27 | characters: 1747 | download: document, picture 1

MENZEL

Vertical motor in 15 days

Menzel Elektromotoren has quickly supplied a replacement for a failed motor driving a sugar centrifuge. Equipping a large motor for vertical installation with foot mounting and with the driven end above, requires a high level of expertise. Menzel mastered this challenge within a very short time.

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Menzel Elektromotoren has quickly supplied a replacement for a failed motor driving a sugar centrifuge. Equipping a large motor for vertical installation with foot mounting and with the driven end above, requires a high level of expertise. Menzel mastered this challenge within a very short time. Only 15 days after receipt of order, the customized motor was at the installation site, at a Swedish sugar refinery. The customer requested a squirrel-cage motor with a 1800 kW nominal output. Menzel has this kind of motor readily available in its extensive warehouse stock. The drive manufacturer built the large flange in its own welding shop, applying the usual high standards on the workmanship. Menzel also drew on stock components to assemble a cooler according to the specified cooling type IC616. Additional motor parameters include 690 V rated voltage, IP55 ingress protection, 743 1/min nominal speed, and configuration for 0…70 Hz frequency converter operation. The German drive specialists closely cooperated with their Swedish office throughout this project. The company has subsidiaries in several European countries and works with experienced partners around the world. Menzel supplies three-phase asynchronous motors with a squirrel cage-rotor for a wide range of industries and industrial applications of all kinds. More information is available at https://www.menzel-motors.com/squirrel-cage-motor/.

date: 2019-01-31 | characters: 1331 | download: document, picture 1

MENZEL

Custom-tailored motors for system integrators

Menzel Elektromotoren not only provides electric motors to end users directly, but is also a supplier and partner of drive manufacturers, distributors, and maintenance companies. The German manufacturer carries a large stock including many unusual motor versions and is highly experienced in customized motor adaptations.

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Menzel Elektromotoren not only provides electric motors to end users directly, but is also a supplier and partner of drive manufacturers, distributors, and maintenance companies. The German manufacturer carries a large stock including many unusual motor versions and is highly experienced in customized motor adaptations. Other manufacturers and integrators therefore rely on Menzel as a trusted source. In many cases, Menzel can assist in the short term, if end customers have particularly challenging demands. Many repeated orders are proof of highest quality and reliability. A Canadian system integrator has recently placed its third order: Menzel was to supply a spare motor for a cement plant and had to meet very exacting requirements. The new slipring motor must be able to replace three existing crusher motors in case of a failure. To ensure smooth commissioning at the installation site, which is characterized by very tight space restrictions, Menzel’s project manager took the measurements in Canada himself. Menzel chose a 4.5 MW motor from stock, built an extended shaft, and furthermore fitted adapter plates with mounting holes for all three locations as well as brackets for plug and play mounting of vibration sensors for condition monitoring. In addition, the terminal box was fitted with long feeder cables to facilitate the third-party connecting-up. An overview of Menzel’s slipring motor range is available at https://www.menzel-motors.com/slip-ring-motor/ic611-ic616-ic666/.

date: 2019-01-22 | characters: 1372 | download: document, picture 1

MENZEL

8-MVA generator for transformer tests

Two German drive technology manufacturers have custom-tailored a motor-and-generator system for the testing of large-scale transformers: Menzel Elektromotoren and Hempel Elektromaschinenbau collaborated to design a special drive solution for a wide frequency range 50 Hz to 100 Hz.

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Two German drive technology manufacturers have custom-tailored a motor-and-generator system for the testing of large-scale transformers: Menzel Elektromotoren and Hempel Elektromaschinenbau collaborated to design a special drive solution for a wide frequency range 50 Hz to 100 Hz. Menzel has built a customized generator for 100 Hz operation and achieved an extremely low THD value – while the specification calls for = 3 %, the test run verified an even lower factor of < 0.5 %, confirming a near-ideal voltage amplitude. The entire drive system was put through a 24-hour test run under load in Menzel's Berlin test field. Menzel provided the documentation, electric connection, and commissioning on site according to Hempel's specifications. Hempel configured both the process control system for the transformer testing and the high-voltage protection. The entire drive system is mounted on a swing base. It comprises a synchronous generator with a rated power of 8 MVA and a rated voltage of 6000 V, a 2500-kW squirrel-cage induction motor, a frequency converter, and accessories, which Menzel configured for the application: coupling, oil supply, voltage and current transformers, and excitation control unit. The speed range is 750 to 1500 rpm. Both machines are robust and feature cooling type IC26 and IP23 ingress protection. The special design enables the largest transformer manufacturer in the Middle East to take up the production of larger-sized, extra-high voltage power transformers. More about customization of rotating frequency converters: https://www.menzel-motors.com/specialized-motors/converter/

date: 2018-12-05 | characters: 1616 | download: document, picture 1

MENZEL

Special motors for pumping station

Menzel Elektromotoren has built two special motors to meet exact customer specifications for all mechanical and electrical properties. A waterworks in the United States needed replacements for very old pump motors with low speeds of 391 min-1 and 439 min-1.

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Menzel Elektromotoren has built two special motors to meet exact customer specifications for all mechanical and electrical properties. A waterworks in the United States needed replacements for very old pump motors with low speeds of 391 min-1 and 439 min-1. The order was for two vertical slipring motors with outputs of 335 kW and 700 kW, each with 4000 V rated voltage. Menzel manufactured two bespoke motors from scratch, including the motor windings. A particular challenge, the external dimensions of the old drives also had to be precisely matched for the same total height with protective hood, terminal box placements, and arrangement of cooling air intakes and outlets. Menzel has a wealth of experience in special motor engineering and is adept at meeting such requirements. The company designed and welded the special enclosures in-house. Implementing the exact same dimensions of the old motors ensured easy and time-saving replacement on site in the pumping station. Before shipping, the motors underwent a load test according to the bi-frequency method in Menzel’s test field in Berlin. All outlined parameters were met to the full satisfaction of the customer. Menzel has been supplying the customer, a U.S.-based drive manufacturer, with special motors for several years, especially when they had to meet particularly short delivery times.

date: 2018-10-04 | characters: 1355 | download: document, picture 1

MENZEL

Live streaming of motor tests

Customers of Menzel Elektromotoren can now choose to monitor the testing of their motors via the internet. This new service complements the existing option to attend the tests on site in Berlin, a welcome opportunity for many domestic and international customers to become personally acquainted with the family-owned company and to visit the factory

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Customers of Menzel Elektromotoren can now choose to monitor the testing of their motors via the internet. This new service complements the existing option to attend the tests on site in Berlin, a welcome opportunity for many domestic and international customers to become personally acquainted with the family-owned company and to visit the factory. From now on, live online observation is available anywhere in the world. A special software enables real-time transmission and display of all data as well as video streaming from two static cameras and a handheld camera. Test engineers wear headsets to communicate with observers throughout the tests. They can use the handheld camera to focus areas of particular interest as directed by a remote customer. This creates maximum transparency. This innovative service helps Menzel demonstrate how individual low and high-voltage motors and DC motors meet the required specifications regarding performance, thermal behavior, durability, and efficiency. The test field features state-of-the-art measuring equipment for electric motors up to 13.8 kV. It is also available for manufacturer-independent checks and inspections. In addition to synchronous and induction motors, Menzel supplies and tests generators, variable-frequency drives, and entire drive systems comprising a transformer, inverter, and motor. Customers can make very flexible use of the testing services to the extent they require, thus saving a great deal of time and money during project planning and implementation.

date: 2018-06-13 | characters: 1532 | download: document, picture 1

MENZEL

Ball mill motor for iron ore mining

Menzel Elektromotoren has quickly adapted and tested a stock motor for a ball mill and expedited it to an iron ore mine. It took only three weeks before the unit was commissioned on site. The customer had ordered a same-size replacement of the original motor with identical electrical properties: 6,750 kW nominal output and 6,600 V nominal voltage.

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Menzel Elektromotoren has quickly adapted and tested a stock motor for a ball mill and expedited it to an iron ore mine. It took only three weeks before the unit was commissioned on site. The customer had ordered a same-size replacement of the original motor with identical electrical properties: 6,750 kW nominal output and 6,600 V nominal voltage. Few if any manufacturers keep motors of this size in stock. That is why such units are usually manufactured to order and typically take several months to be delivered. Menzel was able to flexibly fulfill this order thanks to an exceptionally extensive and very varied range of stock motors. A star-connection 11 kV motor was rewired for 6.6 kV delta connection. Adapter base plates were adjusted for the existing bore hole pattern at the installation site. The motor has been especially tailored to the mill application to ensure maximum availability. It is extremely robust and withstands dust and vibration over the long term.

date: 2018-05-23 | characters: 978 | download: document, picture 1

MENZEL

Ignition protection type Ex n electrical drives

Menzel Elektromotoren supplies Ex n (non-sparking) frequency inverters and electric motors for use in zones 2 and 22 with hazardous gas and dust atmospheres. Low, medium, and high-voltage motors for power ratings up to 5,000 kW and voltages up to 13.8 kV are custom-tailored.

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Menzel Elektromotoren supplies Ex n (non-sparking) frequency inverters and electric motors for use in zones 2 and 22 with hazardous gas and dust atmospheres. Low, medium, and high-voltage motors for power ratings up to 5,000 kW and voltages up to 13.8 kV are custom-tailored. They are shipped with an EU Declaration of Conformity according to ATEX Directive 2014/34/EU. For the long-established company with over 90 years of experience in electrical drive technology and industry-specific motor manufacturing, gas and dust explosion protection for hazardous area systems is a routine issue. Two current projects include orders for several drives with Ex n ignition protection. In one of these cases, Menzel recently delivered five 600 kW low-voltage motors for inverter operation to a site in Algeria. These units power multiphase gas and oil pumps at ambient temperatures up to 55 °C. In the other project, Menzel designed a slipring motor for a coal mill in Senegal as a superior alternative to squirrel-cage motor. The slipring motor has a lower inrush current and supplies higher starting torques. The plant operator has now placed a follow-up order for four identical mill drives for zone 22. The IP65-rated motors prevent any ingress of coal dust and keep particles from settling on slip rings and brushes. In addition, these systems will be supplied in slightly oversized housings to ensure that the operating temperature will not exceed 125 °C.

date: 2018-05-02 | characters: 1452 | download: document, picture 1

MENZEL

Virtual tour through motor test field

The Menzel Elektromotoren homepage provides transparent insights into production facilities at the company’s headquarters in Berlin, Germany. The latest new feature is a virtual-reality tour through the load test field, part of the storage area, the shipping hall, and the paint shop.

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The Menzel Elektromotoren homepage provides transparent insights into production facilities at the company’s headquarters in Berlin, Germany. The latest new feature is a virtual-reality tour through the load test field, part of the storage area, the shipping hall, and the paint shop. The tour is animated by sound bites, video clips, and descriptive text about features and services. Information about historic milestones and the product range is also available. Menzel provides heavy-duty motors to customers throughout the world. Over 20,000 brand-new low, medium, and high-voltage motors as well as DC motors are always in stock, allowing for shortest delivery times. Knowledgeable staff are well equipped to quickly and flexibly implement customer wishes such as special windings and constructional adaptations. The family-owned company carries out all motor tests, a service that is not only available for in-house products – tests of third-party motors can also be commissioned. The test field features state-of-the-art equipment for load tests, heating tests, and other quality and durability checks. Generators and entire drive systems including a motor, transformer, and frequency inverter are tested as well. Link to the virtual tour: https://bit.ly/2HdqIk7 Hannover Messe 2018 visitors are in for a special experience – they can take a VR tour with special headsets at Menzel’s booth (Hall 15, Stand F35).

date: 2018-04-11 | characters: 1415 | download: document, picture 1

MENZEL

Motor outputs up to 20 MW

At Hannover Messe 2018, Menzel Elektromotoren will present a huge motor portfolio in every sense of the word. The Berlin-based company has one of the most well-stocked warehouses in Europe for squirrel-cage and slipring low-voltage, medium-voltage, and high-voltage motors up to 15,000 kW, as well as DC motors up to 600 kW.

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At Hannover Messe 2018, Menzel Elektromotoren will present a huge motor portfolio in every sense of the word. The Berlin-based company has one of the most well-stocked warehouses in Europe for squirrel-cage and slipring low-voltage, medium-voltage, and high-voltage motors up to 15,000 kW, as well as DC motors up to 600 kW. In addition, Menzel custom-tailors drive solutions and builds special designs up to 20,000 kW. Menzel supplies customers around the world with motors and frequency inverters for fans, pumps, compressors, extruders, hoists, conveyors, and other heavy-duty applications. Drive engineers are readily available to ensure qualified technical support. Menzel is particularly skilled in flexibly implementing customer wishes. Not only can brand-new industrial motors be delivered straightaway, the drive manufacturer also has many years of experience in modifying standard motors according to customer specifications in the shortest possible time. A special flange is required? The terminal box must be moved to the opposite side? A particular cooling type needs to be implemented? Menzel does it all and often delivers the custom-tailored drive within days. Visitors seeking to schedule a meeting at the trade fair are welcome to send an advance notice of their preferred dates and times to Ms. Viktoria Meshova (vm@menzel-motors.com). Menzel also provides complimentary professional visitor tickets on request. Menzel Elektromotoren at Hannover Messe, Hanover, Germany 23 – 27 April 2018 Hall 15, Stand F35

date: 2018-03-14 | characters: 1429 | download: document, picture 1

MENZEL

Menzel Elektromotoren wins young industry professionals award

Oliver Semmler of Menzel Elektromotoren has won the 2017 Karsten Moholt Achievement Award for EASA (Electrical Apparatus Service Association) region 9. This prize is awarded annually by EASA to young industry technicians for special achievements.

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Oliver Semmler of Menzel Elektromotoren has won the 2017 Karsten Moholt Achievement Award for EASA (Electrical Apparatus Service Association) region 9. This prize is awarded annually by EASA to young industry technicians for special achievements. The 29-year-old electronics engineer for motors and drive systems was recognized for his outstanding commitment working in the in-house load test field of Berlin-based Menzel Elektromotoren, a manufacturer of special motors. Following Semmler’s nomination by his production manager, numerous customers sent letters of recommendation to the award jury, expressing their satisfaction with his prompt work and great flexibility to ensure the quick and trouble-free completion of motor tests. The award ceremony took place in Valencia in September, during the EASA 2017 convention. Semmler plans to spend the cash prize of 3000 EUR on stints at other EASA member companies to further gain experience. He will likely start by visiting the Norwegian company Karsten Moholt AS, for which the award is named, in the spring of 2018. The winner also said that one more thing was crucial for him: he intends to take his colleague Daniel Krengel along on his trip. „After all, I am only one member of an entire test field crew, and our good teamwork is indispensable for the smooth flow of operations.“

date: 2017-11-15 | characters: 1337 | download: document, picture 1

MENZEL

Menzel Elektromotoren wins young industry professionals award

Oliver Semmler of Menzel Elektromotoren has won the 2017 Karsten Moholt Achievement Award for EASA (Electrical Apparatus Service Association) region 9. This prize is awarded annually by EASA to young industry technicians for special achievements.

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Oliver Semmler of Menzel Elektromotoren has won the 2017 Karsten Moholt Achievement Award for EASA (Electrical Apparatus Service Association) region 9. This prize is awarded annually by EASA to young industry technicians for special achievements. The 29-year-old electronics engineer for motors and drive systems was recognized for his outstanding commitment working in the in-house load test field of Berlin-based Menzel Elektromotoren, a manufacturer of special motors. Following Semmler’s nomination by his production manager, numerous customers sent letters of recommendation to the award jury, expressing their satisfaction with his prompt work and great flexibility to ensure the quick and trouble-free completion of motor tests. The award ceremony took place in Valencia in September, during the EASA 2017 convention. Semmler plans to spend the cash prize of 3000 EUR on stints at other EASA member companies to further gain experience. He will likely start by visiting the Norwegian company Karsten Moholt AS, for which the award is named, in the spring of 2018. The winner also said that one more thing was crucial for him: he intends to take his colleague Daniel Krengel along on his trip. „After all, I am only one member of an entire test field crew, and our good teamwork is indispensable for the smooth flow of operations.“

date: 2017-11-15 | characters: 1337 | download: document, picture 1

MENZEL

Thorough motor examinationMenzel Elektromotoren offer comprehensive testing

of-the art load test field in Berlin, Menzel Elektromotoren can perform vendor-independent motor tests up to 13.8 kV. The facility is also available for external tests up to 1,800 kW under load and up to 10,000 kW in idle operation. Very few independent SMEs in Germany offer comparable services.

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of-the art load test field in Berlin, Menzel Elektromotoren can perform vendor-independent motor tests up to 13.8 kV. The facility is also available for external tests up to 1,800 kW under load and up to 10,000 kW in idle operation. Very few independent SMEs in Germany offer comparable services. The special motor manufacturer’s services include routine, type and system examinations, notably load tests and heating tests of three-phase asynchronous motors with squirrel-cage or slip ring motors. Synchronous machines or transformers, inverters or motor systems can be put through their paces, including specially requested testing conditions. Thorough Motor testing is useful to detect and resolve possible interface problems between individual components ahead of commissioning. This obviously simplifies planning and reduces waiting times for end users. Testing whether a system can be operated safely even in extreme conditions also serves to reduce the risks associated with complex retrofitting in existing facilities. For this purpose, Menzel has custom-built a test hall with a 3 x 9 m base plate for mounting test objects and load machines next to a sound-proof observation cabin with built-in heating. The facility features two cranes that can be coupled if necessary. These can handle loads up to 16 t (hook max. 4.50 m above the clamping field) and 10 t (hook at max. 5.20 m), respectively. Heavier equipment or other lifting heights can be accommodated on request. A family-owned company with some 90 years of experience in the construction of special motors, Menzel specialize in the development and manufacturing of large electric motors for a wide variety of industries.

date: 2017-11-14 | characters: 1720 | download: document, picture 1

MENZEL

IP67 motors from Berlin defy wet conditions in Cairo pump station

The Egyptian Construction Authority for Potable Water and Wastewater (CAPW) recently sourced four custom-made pump drives from special motor manufacturer Menzel Elektromotoren for installation in a water pump station in Cairo.

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The Egyptian Construction Authority for Potable Water and Wastewater (CAPW) recently sourced four custom-made pump drives from special motor manufacturer Menzel Elektromotoren for installation in a water pump station in Cairo. Because the great volume of water processed in the plant constitutes a lingering threat for any nearby motor, these systems were required to be water-tight enough to sustain submersion at standstill without suffering damage. For this reason, the vertical high-voltage motors were finished with IP67 ingress protection, an exceptionally high grade of water resistance. The Berlin-based motor expert is one of the few manufacturers who can provide such motors. In order to achieve this robust degree of protection, Menzel provided the units with encapsulated water-proof housings and terminal boxes and specially engineered bearings. Additional gaskets made from special materials were included for each fit, and high surface pressure in all sealing surfaces were then used to achieve a complete sealing that allows these motors at standstill to be exposed to a flooded environment. The engineers used a non-corrosive housing material and subsequent surface treatment and painting process to furnish the housing with a very low surface roughness. In case of imminent submersion of the pump drives in the facility, the motors can now be switched off, safely await the water to recede, and then be restarted right away. The four six-pole squirrel cage motors with 740 kW rated power, 3300 V rated voltage and 990 rpm are now instrumental to help ensure an uninterrupted water supply to the population of Africa’s largest metropolis.

date: 2017-08-30 | characters: 1655 | download: document, picture 1

MENZEL

Hospitals running out of oxygenMotor manufacturer Menzel delivers emergency motor to Cuba.

In an urgent emergency, Berlin-based motor manufacturer Menzel Elektromotoren saved the day by delivering a spare motor on extremely short notice. June 2017, Cuba: the island state’s only compressor drive for producing oxygen for all hospitals nationwide stopped working.

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In an urgent emergency, Berlin-based motor manufacturer Menzel Elektromotoren saved the day by delivering a spare motor on extremely short notice. June 2017, Cuba: the island state’s only compressor drive for producing oxygen for all hospitals nationwide stopped working. Because human lives were at stake and a quick solution was desperately needed, Menzel converted a motor from their stock according to the requirements, delivered it to Cuba and put it into operation in record time. Just seven days after the manufacturer in Berlin received the emergency call, the motor had been commissioned in Cuba. „Because it was not possible to carry out modifications on-site in Cuba, our replacement motor had to be a perfect fit. Not even a screw could be out of place,“ says Managing Director Mathis Menzel. Even while he was discussing technical details in long calls with the plant operator, his engineers were already moving the connections for cooling water and lubrication oil to ensure a quick and seamless replacement of the old failed motor. „Fortunately, we had a suitably large and adaptable motor on hand, that could cope with the required 3600 rpm at 60 Hz. Only a handful of suppliers stock them. Once again our comprehensive stock-keeping came in handy.“ Because there are no cargo flights to Cuba, the 6.3ton motor was dismantled for transport on a passenger plane. After landing, Menzel employee Henrik Phillip and all the equipment were personally guided through customs by the Cuban Minister of Health. Phillip then reassembled the motor including the sleeve bearings and commissioned it. „We are very proud to have helped with our know-how and motors in an emergency such as this.“

date: 2017-08-09 | characters: 1696 | download: document, picture 1

MENZEL

Motor manufacturer Menzel advises on carbon brush care

Carbon brushes appear to be cheap wear parts, but are actually important motor components that significantly affect a motor’s properties, durability and overall performance.

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Carbon brushes appear to be cheap wear parts, but are actually important motor components that significantly affect a motor’s properties, durability and overall performance. Many plant standstills could therefore be easily avoided through careful selection, professional handling and routine maintenance of the carbon brushes used in the motors, points out special motor manufacturer Menzel Elektromotoren from Berlin. „Operators often underestimate how important the plant-specific selection and quality of carbon brushes is for a smooth-running operation“, says Mathis Menzel, third-generation CEO of the family-owned company. At one customer’s plant, Menzel’s engineers found that the failure of a brand-new motor after just 24 hours had been caused by unsuitable, locally purchased carbon brushes – not a rare case unfortunately. Brush sparking then led to the destruction of the slip ring surface. Aside from the material composition, the required brush quality also depends on location-specific factors such as humidity, ambient temperature, and uniformity of load. „Time and again we also encounter a need for information regarding mechanical fit and manual handling of the brushes,“ says Mathis Menzel. „For example, one should never mix brushes of a different type or from different manufacturers and also never use brushes that are worn down more than 50%.“ Motor supplier Menzel supports operators in choosing suitable brushes for their application and provides comprehensive consultation in all matters ranging from quality of the material to the correct fit. The company offer their services and take questions 24 hours a day, all year round at info@menzel-motors.com.

date: 2017-07-05 | characters: 1689 | download: document, picture 1

MENZEL

Emergency call: Compact all-rounder replaces failed motor ex-stock on short notice

Within a day after the order came in, motor specialist Menzel Elektromotoren recently delivered a 18 ton motor with 7,500 kW rated power and a speed of 1,490 rpm-? via special transport. The motor replaced the failed compressor drive of a longtime customer and world market leader in the technical gases industry.

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Within a day after the order came in, motor specialist Menzel Elektromotoren recently delivered a 18 ton motor with 7,500 kW rated power and a speed of 1,490 rpm-? via special transport. The motor replaced the failed compressor drive of a longtime customer and world market leader in the technical gases industry. Menzel Elektromotoren was able to react so swiftly, because the manufacturer is one of very few who are capable of providing such large-capacity motors from stock. With decades of experience in the warehousing of high-voltage motors up to 15 MW rated power, the special motor manufacturer has perfected the flexible, customized adaptation of motors to meet the customer’s technical conditions as well. A modular motor from a series specially designed for larger pumps and compressors was therefore readily available on short notice. The outlay for this job proved to be minimal. Thanks to the extremely compact design of these motors they fit in almost any application. In addition, versatile welding steel housings with variable mounting options, high-quality Renk sleeve bearings, terminal boxes that are rotatable by 4 x 90 degrees as well as a choice of various cooling options give these motors maximum compatibility.

date: 2017-05-17 | characters: 1237 | download: document, picture 1

MENZEL

1800 kg courier delivery from Berlin to Scotland

Berlin – Menzel Elektromotoren from Berlin recently took on a particularly urgent order for the delivery of a customized, 100% electrically and mechanically compatible squirrel cage motor. Within just a week, the special motor manufacturer supplied a replacement motor, that had been specially adapted to the mounting dimensions at the pharmaceutical plant in Scotland. Despite a weight of nearly two tons, the urgently needed motor traveled to its destination by courier.

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Berlin – Menzel Elektromotoren from Berlin recently took on a particularly urgent order for the delivery of a customized, 100% electrically and mechanically compatible squirrel cage motor. Within just a week, the special motor manufacturer supplied a replacement motor, that had been specially adapted to the mounting dimensions at the pharmaceutical plant in Scotland. Despite a weight of nearly two tons, the urgently needed motor traveled to its destination by courier. For this order, Menzel chose a four-pole motor with a speed of 1481 min-Âą, 200 kW rated power and 3300 V rated voltage from their extensive stock and modified it to match the necessary flange dimensions. This necessitated not only changes to the bearings. It also meant that the engineers had to convert the horizontal B3 motor into a vertical V1 motor with special flange to ensure a precise mounting fit at the customer’s plant. Unlike major motor manufacturers with a fixed product range, the medium-sized drive expert specializes in handling such projects with extremely short response times to help customers minimize downtime due to machine failures. With more than 20,000 motors of various types in stock (low-voltage, high-voltage and DC) and the in-house shop readily available to implement custom requirements, the Berlin-based drive technology expert is quick to supply special solutions for a broad range of applications.

date: 2017-04-19 | characters: 1 | download: document, picture 1

MENZEL

Senior CEO of Menzel Elektromotoren retires

Berlin – Menzel Elektromotoren GmbH, a Berlin-based company with a long-standing history, sent off senior CEO Kurt Menzel into retirement with a ceremonial farewell on 31. March 2017. Starting his career in 1975 as Head of Marketing, the qualified engineer took over management of the motor manufacturer from his father, company founder Kurt Menzel senior, in 1984. After more than four decades of commitment to the company, Kurt Menzel now puts leadership of Menzel Elektromotoren into the hands of his son, Mathis Menzel, who has been a member of the management for some years.

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Berlin – Menzel Elektromotoren GmbH, a Berlin-based company with a long-standing history, sent off senior CEO Kurt Menzel into retirement with a ceremonial farewell on 31. March 2017. Starting his career in 1975 as Head of Marketing, the qualified engineer took over management of the motor manufacturer from his father, company founder Kurt Menzel senior, in 1984. After more than four decades of commitment to the company, Kurt Menzel now puts leadership of Menzel Elektromotoren into the hands of his son, Mathis Menzel, who has been a member of the management for some years. Stepping in as commercial director will be qualified business administrator Dirk Achhammer, who first started working for the special motor manufacturer in 2007 as Head of Finance and Administration and later as Authorized Signatory. Over the course of the last 90 years, Menzel Elektromotoren has established itself as a sucessful partner for short-notice delivery of large electric motors with special adaptations, valued by customers for exceptional reliablity and delivery dependability. For his entrepreneurial engagement, company founder Kurt Menzel senior was even awarded the Order of Merit of the Federal Republic of Germany in 1977.

date: 2017-04-05 | characters: 1 | download: document, picture 1

MENZEL

Custom-made replacement motor for two extruders

Berlin – Menzel Elektromotoren have constructed a special motor for a customer from the plastics industry which can be used as a flexible replacement for two differently designed extruders. The operators turned to Menzel, because no „off the rack“ motor was suitable for this particular task.

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Berlin – Menzel Elektromotoren have constructed a special motor for a customer from the plastics industry which can be used as a flexible replacement for two differently designed extruders. The operators turned to Menzel, because no „off the rack“ motor was suitable for this particular task. With 90 years of tradition and experience in motor construction, the company specializes in the manufacture of customized motor solutions and can implement versatile adaptations and special designs in its workshop in Berlin.

The motor specialist’s service also includes modifications for DC motors as in this case. The DC motor supplied by Menzel features a performance of 472 kW and nominal speeds of 1,400 or 1,710 min-1 respectively, to replace each of the two extruders if necessary. „The customer was able to avoid the costly implementation of a second spare motor, because this two-in-one replacement motor has been adapted to the on-site limitations and two different installation conditions by us,“ explains RenĂ© Gaebel, Head of DC & Special Drives for Menzel. His team constructed the motor with an active terminal box on both sides and installed a custom shaft for an adjustable connection to either extruder. To accommodate the different lengths of the two motors, a flexible foot mounting with long slots at the front and back was installed as well.

date: 2017-02-21 | characters: 1338 | download: document, picture 1

MENZEL

Anniversary: Menzel Elektromotoren turns 90 years old

Berlin – Menzel Elektromotoren, a German company of long standing tradition from Berlin, looks back on 90 years of company history this year. Since its founding on September 7, 1927, the manufacturer of electric motors produces large industrial motors with special designs for a wide variety of industries and delivers them all over the world on short notice.

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Berlin – Menzel Elektromotoren, a German company of long standing tradition from Berlin, looks back on 90 years of company history this year. Since its founding on September 7, 1927, the manufacturer of electric motors produces large industrial motors with special designs for a wide variety of industries and delivers them all over the world on short notice. After turbulent early years – including the world economic crisis, the total destruction by bomb damage during World War II and dismantling by the Russian occupation force – founder Kurt Menzel succeeded at quickly rebuilding the company despite the Berlin blockade. By 1958 the company was able to move into new 10,000 m² large headquarters in Berlin-Tiergarten.

in 1977, Kurt Menzel was awarded the German Federal Cross of Merit for his entrepreneurial commitment. Today, his grandson Mathis Menzel is the third generation of the founder’s family to manage the successful company. To ensure fast delivery to the customer under any circumstances, the motor manufacturer maintains sites in several countries and an extensive stock with numerous three-phase motors and DC motors of all cooling and ingress protection types in a power range up to 15,000 kW. And uniquely for a German company this size, Menzel has a load test field for up to 1,800 kW under load and 10,000 kW at idling speed. A company-owned service department with 50 service technicians is available to customers anywhere at short notice. In Germany alone, more than 20 service cars are used. Worldwide delivery is managed by an in-house Logistics Department. To celebrate the anniversary, Menzel offers its customers a very special deal: for motor models manufactured between 2007-2016, the motor manufacturer constructs identical re-deliveries at the old price.

date: 2017-01-26 | characters: 1784 | download: document, picture 1

MENZEL

Fresh air for thermal power plant: Large fan motor weighing 25 tons gets identical replica

Berlin – Providing a spare for the exceptionally large fan motor at EUGENIO MONTALE, a 600 MWe thermal power plant in Italy, special motor manufacturer Menzel Elektromotoren recently built an exact replica. The 8-pole squirrel cage motor features a D5 design with a base frame and pillow blocks. At 3500 kW, 6000 V and about…

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Berlin – Providing a spare for the exceptionally large fan motor at EUGENIO MONTALE, a 600 MWe thermal power plant in Italy, special motor manufacturer Menzel Elektromotoren recently built an exact replica. The 8-pole squirrel cage motor features a D5 design with a base frame and pillow blocks. At 3500 kW, 6000 V and about 25 tons of weight, the extremely large specimen is also exposed to ambient temperatures of up to 60 °C. Menzel, a family-owned company from Berlin, received the commission because they were the only provider able to implement all of customer ENEL Produzione SPA\’s technical requirements, despite the motor’s enormous size. This included in particular a completely identical efficiency. The original motor manufactured by ASGEN ITALY in 1973 has special design features such as external sleeve bearings, custom external dimensions and a dedicated base frame. It also features a very large inertia moment of J=11250 kg/m². Taking into account all these factors, Menzel constructed the spare machine with identical mounting and shaft dimensions and the exact same axis height. The sleeve bearing and terminal boxes as well as the oil and water connections were positioned in accordance with the original motor. Menzel also fulfilled the special request by the customer for a tangent-delta check and partial discharge measurement.

date: 2016-12-13 | characters: 1341 | download: document, picture 1

MENZEL

Slip ring motor in zone 22 hazardous area: Coal mill drive upgraded for dusty environment

Berlin – For a major inspection process, a Senegalese cement manufacturer had to replace their old coal mill and install a technically and mechanically compatible replacement motor in 2015. Tasked with this assignment, Menzel Elektromotoren from Berlin was faced with a particularly d…

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Berlin – For a major inspection process, a Senegalese cement manufacturer had to replace their old coal mill and install a technically and mechanically compatible replacement motor in 2015. Tasked with this assignment, Menzel Elektromotoren from Berlin was faced with a particularly dusty challenge. The motor, which provides the plant with finely ground coal dust to meet the plant’s primary energy needs, is operated in a hazardous area classified as zone 22. While ground coal offers better caloric properties than briquets, particles of conductive dust left on slip rings and brushes may cause sparks and lead to an explosion. The motor therefore required a design that would reliably prevent dust ingress during all operating stages. To meet these challenging requirements, the German manufacturer of custom motors engineered a rugged unit with IP65 ingress protection. Because a squirrel-cage motor requires a high starting current and has a lower starting torque, a slip ring motor was chosen. A special motor construction was then devised for the application: the system features special terminal boxes for the stator and rotor, a non-magnetic cable entry plate, and hazardous area terminal clamps for the auxiliary terminal boxes. In addition, the motor housing is slightly larger to ensure the operating temperature does not exceed +125 °C. Additional fixing points between the radiator and housing facilitate tightening of the sealing in-between. The engineers also reinforced Menzel’s standard viewing windows for the slip ring chamber with bolted covers and plexiglass to ensure proper tightness. Thanks to these measures, the replacement motor has received a Ex II 3D Ex tc IIIB T125°C Dc explosion protection marking and reliable delivers top performance in zone 22.

date: 2016-11-02 | characters: 1772 | download: document, picture 1

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