AEM - CW Series Motors

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CW Series Brochure [4.1mb]

CW Series motors

The CW and CWC Series of Single and Three Phase TEFC motors are outstanding examples of the diverse range and product reliability that has built the CMG name.

CMG’s general purpose single and three phase CW series motors are available in 2, 4, 6 and 8 pole, 0.18 to 2.2 kW.

The CW range has a modular design, incorporating interchangeable parts, which makes it an ideal base for the CWC range of special application and customer specified motors, incorporating special physical and electrical designs.

Applications
CWC Special Application Range: Evaporative Cooler Motors Compressor Duty Motors Bricksaw Motors Cement Mixer Motors Fan Motors Grain Feeder Motors Sewage Aeration Motors Pump Motors Brake Motors	Other Applications: Floor polishers Centrifugal and axial fans Pool and spa pumps Two speed saws Shearers Grinders Hydraulic hoist Farming equipment Wood lathes Drill presses Ideal general purpose motor

Mechanical Design
Mounting arrangements CW series motors are available in foot mount (B3), flange mount (B5 and B14) and foot/flange combination (B3/B5). Special application motors requiring alternative mounting arrangements are available on request. Degree of protection Standard enclosure protection rating for the CW motor series is IP 44. Other levels of protection are available on request. Materials and construction Materials for the CW series of CMG electric motors are outlined in the drawing below. Paint finish Standard CW and CWB motors are painted hammertex grey. Other colors are available on request. Protective coatings to meet stringent requirements for resistance against acid, salt water, climatic conditions or special client requirements are available. Terminal and capacitor boxes Terminal boxes offer four lead entry points. Two cable clamps plus two conduit entries. Optional terminal boxes providing an opening for switches are available.	Rotor balancing Rotors have been balanced fitted with half key, to a good commercial level. Special balancing can be performed on request. Cooling Standard CW series motors are Totally Enclosed Fan Cooled (TEFC). Internal cooling is achieved through movement of air by rotation of the rotor blades. Drip Proof Fan Cooled (DPFC) is also available. DPFC is physically the same as TEFC except that the endshields are ventilated. Models using DPFC are indicated in the performance data section. Cooling systems used also include Totally Enclosed Surface Cooled (TESC) and Totally Enclosed Air Over Motor (TEAOM). Bearings CMG CW series motors are provided with high quality shielded bearings (ZZ), prepacked with grease. Bearings with full contact neoprene seals (DDU or 2RS) are available for enclosure ratings such as IP 55. Bearings are lubricated with lithium based rolling contact bearing grease and are suitable for operation within the ambient temperature range of -20°C to 40°C. Low or high temperature grease is available on request.

Electrical Design
Operating parameters Standard CW series motors are designed to the following parameters: Continuous duty (S1) Three phase 415 volts / single phase 240 volts, 50Hz power supply Ambient temperatures up to 40°C Installation at altitudes up to 1000 metres Insulation and Temperature Rise Class The CW motor series have Class F insulation as standard, with a Class B temperature rise (80K), unless otherwise stated.	Rotation Standard single phase motors are supplied to give clockwise rotation, as viewed from drive end. They can easily be reconnected to anti-clockwise rotation by interchanging two leads in the terminal box. Overload protection Auto reset (internal and external) and manual reset (external) overload protection devices are an available design feature of CW motors. Internal devices are a thermostat type, while external are current limiting.

Electrical Design

Operating parameters

Standard CW series motors are designed to the following parameters:

Continuous duty (S1)
Three phase 415 volts / single phase 240 volts, 50Hz power supply
Ambient temperatures up to 40°C
Installation at altitudes up to 1000 metres

Insulation and Temperature Rise Class

The CW motor series have Class F insulation as standard, with a Class B temperature rise (80K), unless otherwise stated.

Rotation

Standard single phase motors are supplied to give clockwise rotation, as viewed from drive end. They can easily be reconnected to anti-clockwise rotation by interchanging two leads in the terminal box.

Overload protection

Auto reset (internal and external) and manual reset (external) overload protection devices are an available design feature of CW motors. Internal devices are a thermostat type, while external are current limiting.