Specifications

52 YORK INTERNATIONAL
LD00475
FIG. 30 – DIAGRAM, MEGOHM MOTOR WINDINGS
MEGOHM THE MOTOR
Make certain that the motor disconnect switch (circuit
breaker) is in the open position. Megohm the motor as
follows:
1. Use a megohm meterto verify the minimum motor
and wiring insulation resistance. Megohm between
phases and each phase to ground, refer to Fig. 30,
Diagram, Megohm Motor Windings. Refer to
Fig. 31, Motor Stator Temperature and Insulation
resistances.
2. If insulation resistance values fall to the left of the
curve, remove external leads from the motor and
repeat test.
Motor is to be megged with the starter
at ambient temperature after 24 hours
of idle standby.
Maintenance