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6.BATTERY SAVER (SLEEP MODE)
The meter will automatically enter the “sleep mode” if there is no function change or button press for
10minutes, but it works as soon as you turn the rotary function switch or push down any button.
7.POWER TOOLS AND AMALL APPLIANCES
This test would also apply to other similar equipment that has a line cord. For double insulated power tools,
the megohmmeter lead shown connected to the housing would be connected to some metal part lf the
tool(e..g chuck,blade).
Note: The switch of the device must be in the “ON” position and the main power should be disconnected.
MOTORS
AC-Disconnect the motor from the line by disconnecting the wires at the motor terminals or by opening the
main switch. If the main switch is used and the motor also has a starter then the starter must be held, by
some means, in the “ON” position. In the latter case, the measured resistance will include the resistance of
the motor, wire and all other components between the motor and the main switch. If a weakness is in
dicated, the motor and other components should be checked individually. If the motor is disconnected at the
motor terminals, connect one megohmmeter lead to the grounded motor housing and the other lead to One
of the motor leads. DC-Disconnect the motor from the line. To test the brush rigging, field coils and armature
connect one megohmmeter lead to the grounded motor housing and the other lead to the brush on the
commutator. If the resistance measurement indicates a weakness, raise the brushes off the commutator and
separately test the armature, field coils and brush rigging by connecting one megohmmeter lead to each of
them individually, leaving the other connected to the grounded motor housing. The above also applies to DC
Gemerators.
CABLES
Disconnect the cable from the line. Also disconnect opposite end to avoid errors due to leakage from other
equipment. Check each conductor to ground and /or lead sheath by connecting one megohmmeter lead to a
ground and /or lead sheather and the other megohmmeter lead to each of the conductors in turn. Check
insulation resistance between conductors by connecting megohmmeter leads to conductors in pairs
.
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