Simulated Leakage Current Measurements Of Complete Motors With Abb Metrawatt M 5013; Measures Required In Case Of Incorrect Readings - Pfaff Select 1520 Service Manual

58. Simulated leakage current measurements of complete motors with ABB Metrawatt M 5013

V Simulated leakage current measurements of complete motors
When exchanging complete motors or motor parts (windings, rotors or capacitors), the complete motor
must be measured for leakage current before fitting in the machine.
Set testing range switch at "20 mA" (fig. 125).
Screw nut No. 92-320 068-05 to the motor.
Connect auxiliary angle plug No. 29-924 800-04 to the motor plug.
Connect the two test leads as in fig. 125.
Meter reading: 0.75 mA maximum.

59. Measures required in case of incorrect readings

Re I If one of the four test functions is a failure, the grounded electrical outlet is defective.
Take necessary steps to repair the electrical outlet.
Re II If the current consumption deviates considerably from the indicated value, even though
the machine does not bind, the motor is defective and must be exchanged or
repaired.
Re III If the insulation resistance drops below the required value, the defective components must
be found by systematic checking and must be repaired or replaced.
Re IV The components with inadmissibly high leakage current must also be found by systematic
checking and must be repaired or replaced.
Re V Return the motor to the factory.
76227 Karlsruhe, 21.08.2001
HTS
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