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New - PXL Magnetic Encoder

PXL Magnetic Encoder  IP66 up to 20000 PPR

High performance, fully protected  rotary magnetic encoders for harsh or difficult environments.

The PXL-encoder - consisting of a fully cast sensor and a magnet-rotor disc directly mounted onto your motor gear shaft (no bearings). By means of the “wide gap” technology (more than 2 mm air gap between rotor and sensor) an abrasion-resistant and very long service life - even under difficult field conditions – is achieved. This encoder produces up to 20.000 ppr and can be used with a max speed of 100.000 rpm.

This encoder has specifically been designed for prototype equipments by means of a flexible adjustment of the rotor (inner and outer diameter). This encoder with its high variability, the simple mounting as well as the robust and abrasion-resistant design is very interesting for many fields of application.

Download PXL

New - Forced Ventilation Unit's - Type AH

The motor package is very compact and is sealed by means of a newly developed sealing system. The plastic impeller with the injection-moulded metal socket is press-fitted onto the shaft. This ensures the greatest possible operating reliability throughout the entire service life, which according to the manufacturer's specifications exceeds 30,000 operating hours. Long-term experiments have confirmed this information.

The materials used for other components have also been selected very carefully. The guard grille, for example, consists of durable die-cast aluminium; the terminal box for electrical connections is integrated. The hood design also guarantees excellent durability. It is straight-bead welded sheet metal and can easily be adapted to customer-specific needs. Systems for special customer applications can be made available within one to two weeks. This way, the motor and the hood of the forced air ventilation system become a durable, compact unit that also meets aesthetic requirements.

The new AC forced air ventilation systems are offered in eight sizes and are suitable for motors with shaft heights from frame size 63 (56) to 200.

In order to achieve optimum air performance for every size and the specific application, the smaller versions of the forced air ventilation systems are operated with an axial impeller, while centrifugal-diagonal impellers are used for forced air ventilation systems that have motors of size 100 or larger. All the impellers are made of high-strength plastic and have been optimised according to aerodynamic criteria. For example, winglets - familiar from the field of aviation technology - are used to minimise unwanted air flow between impeller and housing.

This improves the efficiency and noise behaviour of the forced air ventilation systems. According to recent test results, motor forced air ventilation systems provide on average up to 6% more air than existing systems. Reliable cooling is thus possible even with higher drive output. At the same time, the noise level is up to 7 dB lower than that of existing motor forced air ventilation systems. Due to the noise reduction, it is now easier to comply with noise protection regulations.

Of course, the good dampening behaviour of the plastic material used, which happens to also be extremely durable, helps to achieve the lower noise emission. The plastic impellers - without varnish - are very corrosion-resistant, for example if exposed to salt water or salty air. Even direct solar radiation during outdoor use does not have harmful effects, because the plastic material that is used is UV-resistant.

Thanks to their wide voltage input, the robust motor forced air ventilation systems are suitable for worldwide use. Design versions for star and delta voltage are available for input voltages of 220 to 500(525) VAC at a power frequency of 50 Hz and for 220 to 575 VAC at 60 Hz. The systems can also be connected to a single-phase AC power supply. Motor forced air ventilation systems with the so-called Steinmetz circuit are suitable for input voltages between 230 and 277 VAC at a power frequency of 50 or 60 Hz.

for more information

Research and development

• steps of development for continuous product improvement
• basic research for further improvement of product properties and implementation of customer requirements into the design concept
• development of new products by direct use of university research results
• software developments for computer-aided modeling of products
• customer-adapted development and design

Innovation compact motor - output 3.0 upto 22 kW

• substantial decrease in noise and vibration levels
• by tangential outlet of warmed-up cooling air, no heating influence onto the driven equipment
• high thermal overloading capacity
• insulation class F
• degree of protection IP 55

Innovation compact drive - output 0,75 upto 22 kW

• harmonized system of motor and frequency converter
• converter with integrated filters directly on the motor
• EMC-Rules completely met for the whole quipment
• stand-by operation (immediate readiness for operation)
• self-protected
• speed variations optionally by potentiometer or intergration into control technique

Innovation: 3-phase asynchronous motors with squirrel-cage rotor, size 355 - output 315 upto 500 kW

• high motor efficiency
• optimized ration between output and weight / volume
• most modern manufacturing techniques
• use of pressed-in stator cores
• rigid rotor version by aluminium die-cast rotor body
• suitable for feeding by frequency converter
• use of up-to-date cast-iron housings for better noise and vibration behaviour
• insulation system in class F, option for class H

 

Stockholding

Emac´s current stockholding (as at 01/01/2007) is Rand 15 million. This is made up as follows:

VEM electric motors cemp flameproof motors kMMp components and spare TEE aluminium motors

Rand 11 million Rand 750.000 Rand 750.000 Rand 3,5 million

Emac makes every effort to carry „good stock“, through continued analyses of the market requirement, and are able to have the motors ex stock, meeting their client´s needs.

With the very short lead time in the VEM manufacture programme, Emac also enjoys a quick and even supply from Germany, reducing the problem of carrying „dead stock“.

 

VEM Motors GmbH

On standard motors there are massive stockholdings in Germany whereas any standard motor can be delivered within 24 hours.

 There are three warehouses in Germany with following stockholding:

• Factory Wernigerode, approximately 7.000 electric motors from frame IEC 56 upto IEC 315
• VEM warehouse Essen, Germany , 6.000 electric motors from frame IEC 56 upto IEC 315
• Warehouse Munich, Germany, 5.000 electric motors frome frame IEC 56 upto frame IEC 315

Further, facilities exist to have any purpose made motor ready for delivery within 48 hours providing the basic type is available from any of above three warehouses.

Leadtimes for fabrications are as follows:

• VEM factory Thurm (frame IEC 56 upto 112)  4 weeks after order
• VEM factory Wernigerode (frame 132 upto 315)   7 - 8 weeks after order

There are weekly shipments form Germany (ports of Hamburg or Bremen) and the sailing time to Port Elizabeth is 21 days.

Long term strategy

Our long term strategy will be that VEM electric motors would become a major electric motor supplier in Southern Africa.

Our target will be a market share of  20 - 30 % for low voltage electric motors.

Rewind strategy

Emac does not have its own rewinding facilities in Meadowdale.

Emac uses the facilities of various rewinders and electric motor repairs who have the ability, quality, standards, manpower capacity, transport and service standards that are acceptable to both your company  and the S.A.B.S.

Furthermore, we negotiate the best possible guarantee periods on the rewind and also supply a test certificate when complete, giving the end user every advantage on the repaired unit.

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