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Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Operating faults – Trouble shooting information for Squirrel Cage Induction
motors
1) If the load inertia is larger than what has been reported, please contact the supplying ABB
Company.
2) Starting system can be star-delta connection, starting reactor or auto-transformer. When a starting
system different than the direct on line starting, the machine torque decrease and the starting time
increase. This must be noticed.
3) Driven machines may have different starting methods. Many of them can be started without load.
For example, compressors and blowers can be started with closed suction vanes. In many cases
the driven machine feeding can be started after starting the motor. It is possible that the motor does
not start loaded, if it has been designed to start without load. The machine can be damaged when
starting with load if it has been designed for no load start.
Sheet No.
3AAM101036 E
Rev. B
01.2023
2 of 8
Page
Issued by: MOLM
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