CMP Motors

Specifications and Standard Compliance

• CMP Motor’s dimensional and rated output data generally confirm to IEC 60034 and
• All CMP Motors meet the requirement for ‘CE’
• Cooling method are as per IC411

Motor’s Enclosure / Degree of Protection

For vertically mounted motors

• Motors to be mounted with the shaft vertically down must be provided with a suitable cover (available on request) to ensure foreign bodies are prevented from entering the. Special care is necessary in fitting protective covers to ensure air flow is not impeded . To maintain IP rating, special additional measures may be required to protect the motor against he ingress of water or foreign bodies. Please contact CMP for further information.

Against solar radiation

• High solar radiation will result in undue temperature In these circumstances motors should be screened from solar radiation by placement of adequate sunshades which do not inhibit air flow.

Degree of protection

• Standard levels of enclosure protection for all DBA frame sizes for both motor and terminal box is IP55, with IP56, IP65 and IP66 available on. Enclosure designations comply with IEC or AS60529. The enclosure protection required will depend upon the environmental and operational conditions within which the motor is to operate.

Insulation

Standard DBA series motors are wound with F class insulation and winding designs limit the temperature rise to 80K (unless otherwise noted) for which B Class insulation would normally be sufficient. The use of F class insulation provides an additional safety margin of 25K, as shown in the accompanying table, together with an extended operating life.

Thermal protection

Motors can be protected against excessive temperature rise by inserting, at various positions within the windings, thermal probes which can either give a warning signal or cut off the supply to the motor in the event of a temperature abnormality.
The units fitted to DBA motors, frame sizes 160 and above, are PTC thermistors. These thermovariable resistors, with positive temperature co-efficient, are fitted one per phase, series connected and are terminated in a terminal strip located in the terminal box. Trip temperature is 160°C (180°C for DBAH series). Additional 130°C thermistors can be fitted as an option for alarm connection.

Standards and specifications

The main dimensions and rated outputs of CMP type DBA motors generally conform to International Standards IEC60034, IEC60072 and Australian Standard AS1359.

Efficiency

The DBA motor range exceeds requirements of European Eff 2 or Eff 1 and correspond to IE1 (Standard Efficiency) or IE2 (Hight Efficiency) & IE3 (Premium Efficiency) of the new international standard IEC 00034-30.