Manual for Induction Motors and Generators
98 - Trouble Shooting
3BFP 000 050 R0101 REV E
***Following chapter for cooling type: Rib cooled
8.1.3.4 Thermal performance, rib cooled
NOTE: For high bearing temperature, see Chapter 8.1.2 Lubrication system and bearings.
Trouble shooting
Thermal performance
rib cooled
Overload
Control system setting Check machine controls, eliminate overload
Overspeed
Check actual speed and ABB speed recommendations
Network unbalance Check that network balance fulfils requirements
Faulty instrumentation or measurement system Check measurements, sensors and wiring
Too many starts Let the machine cool down before restarting
Check windings
Dirty machine exterior Clean machine exterior
z
Air flow is reduced
Remove obstacles. Ensure sufficient air flow, see Dimension
Drawing of the machine
z
z
Winding fault
z
z
z
z
z
Experienced
malfunction
High winding temperature
Possible cause Corrective action
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