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Preparing for use
4.7 Thermal protection
Use a motor circuit breaker, directly monitor the winding temperature or use equipment to
provide the same functionality corresponding to the explosion type of protection.
For pole-changing motors, in addition to the circuit breaker, use temperature sensors in the
windings.
Ex d and Ex t
Line supply
• Set the protective device (e.g. circuit breaker) to the rated current (see the rating plate).
• Or protect the machine using the certified temperature monitoring specified on the
supplementary plate .
Converter
• Always operate explosion-protected machines fed from converters with temperature
sensors that directly monitor the temperature.
Ex e and Ex eb
Line supply
• Set the protective device (e.g. circuit breaker) to the rated current (see the rating plate),
I
• Or protect the machine using the certified temperature monitoring specified on the
supplementary plate.
Converter
• Always operate explosion-protected machines fed from converters with temperature
sensors that directly monitor the temperature.
• Converter operation for these machines must be expressly certified. It is crucial that you
carefully observe the specific manufacturer's information and instructions. Converter,
machine and protective devices must be marked as belonging together and the permitted
operating data must be defined in the common EC-type examination certificate.
Ex n and Ex ec
Line supply
• Set the protective device (e.g. circuit breaker) to the rated current (see the rating plate).
• Or protect the machine using the certified temperature monitoring specified on the
supplementary plate .
Converter
• Always operate explosion-protected machines fed from converters with temperature
sensors that directly monitor the temperature.
• Converter operation for these machines must be expressly certified. Observe the specific
manufacturer's information and instructions
56
/I
and the locked rotor time (t
A
N
).
E
Operating Instructions, 08/2023, A5E52990459A
1MB1.33 Eagle Line shaft heights 71 ... 315
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