RS Pro RS-9985 Manual De Instrucciones página 9

Insulation Tester with Multimeter / English
d) Being free from the "TEST" button or pushing down the "TEST" button in the "LOCK"
status can exit from the "LOCK" status and shut off the high-voltage. The resistance
values is indicated in the primary display and in the top right corner, the display will show
the status of monitoring the insulation voltage for the tested .
e) Subsequently, discharge the balance insulation voltage of the tested through the inner
switch of the meter.
Turning the function switch or press the EXIT button can exit automatically from testing
status during the process.
POWER TOOLS AND SMALL 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 (e.g. chuck, blade).
Note: The switch of the device must be in the "ON" position and the main power should
be disconnected.
MOTORS
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 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 indicated, 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. Disconnect
the motor from the line. To test the brush rigging, field coils and armature, connect one
megohmme 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.
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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.
25/01/2018 Version No. 001 25/01/2018 Version No. 001
Insulation Tester with Multimeter / English
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