6
Danger
Please utilise extreme caution when performing work within the compressor. Wear
appropriate PPE
(Personal Protective Equipment)
, follow
lock out-tag out
procedures, and
ensure all safety procedures
.
WINDING INSULATION TEST (MEGGER).
•
Isolate compressor from incoming Power Supply.
•
Disconnect motor leads from the VSD.
•
Connect one cable of the Insulation Tester on the main ground
Connect the other cable of the megohmmeter (Insulator Tester) to each motor
leads (one at a time, make sure you disconnect the brass bars from the stator
connection bloc). and test using 500V D.C. . Each motor leads should give a
minimum value of 10 M Ohm.
•
AFTER MOTOR WINDING INSULATION TEST.
•
AFTER STATOR REPLACEMENT.
!
!
You must be sure that the motor leads are connected as
specified below :
