MOTORS FOR HEAVY ELECTRICAL VEHICLES
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5. Operation
The motor is designed for the following ambient conditions:
• Operating ambient temperature between -20°C and +40°C
• Maximum altitude 1000 m above sea level without derating
• Maximum relative humidity 95%
• Shock loads +/-10g in XYZ direction
• Vibration loads +/- 1,5g in XYZ direction
The motor can only be used in applications for which it is intended. The electrical performance data are
shown on the nameplate, see example in Figure 2, and are only valid if the requirements of the liquid
cooling system, given in 4.4, are fulfilled. In addition, all requirements of this manual and related
instructions and standards must be followed.
If these limits are exceeded, electrical performance data and mechanical integrity must be verified. Please
contact ABB for further information.
NOTE: If the motor is equipped with heating elements in the winding, ensure they are electrically
connected and powered to prevent possible condensation during standstill.
5.1. Failure mode operation
Although not recommended, the motor may operate for a short term in failure mode operation if this is
unavoidable or in an emergency as long as the sensors monitoring the stator winding temperature are
still functional and the limits in Table 3 are not exceeded. A typical failure mode operation is if the liquid
cooling system fails temporarily. Operating in failure mode operation may lead to permanent damage to
the motor. However, it is not advisable to tow the vehicle without first disconnecting the motor from the
wheels. When connected to the wheels, voltage can be generated which can be harmful to the motor and
other components in the system, this is valid even if the motor is suspected to be damaged or defective.
If the temperature sensors are not functional, please contact ABB before proceeding.
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