Idiomas disponibles
Idiomas disponibles
Digital Insulation Tester/English
5. AC/DC VOLTAGE MEASUREMENTS
a). Set the range switch to ACV or DCV position
b). Connect red test lead to "V " terminal and black test lead to
terminal "COM".
c). Connect test prods of test leads IN PARALLEL with the circuit being
measured.
d). Read the voltage value on LCD.
6. 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 test lead shown connected
to the housing would be connected to some metal part of 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
indicated, the motor and other components should be checked
individually. If the motor is disconnected at the motor terminals,
connect one test lead to the grounded motor housing and the other
lead to one of the motor leads.
8
DC
Disconnect the motor from the line. To test the brush rigging, field
coils and armature connect one test 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 test lead to each of them individually,
leaving the other connected to the grounded motor housing. The above
also applies to DC Generators.
CABLES
Disconnect the cable from the line and disconnect the opposite the end to
avoid errors due to leakage from other equipment. Check each conductor
to ground and /or lead sheath by connecting one test lead to a ground
and /or lead sheath and the other test lead to each of the conductors in
turn. Check the insulation resistance between conductors by connecting
the test leads to conductors in pairs.
Digital Insulation Tester/English
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