© PCE Instruments
8
5
Turn on meter
To turn on the meter, select the desired function by turning the rotary switch. The meter will power
on directly. To turn off the
meter, select “OFF“ with the rotary switch.
6
Connect the test leads
Connect the red test lead to the V
Ω input jack. Connect the black test lead to the COM input jack.
6.1
Set zero point
To reset the zero point, choose
“400Ω“ with the rotary switch. Now hold the measuring tips against
each other. Then press
“ZERO“. The zero point has been reset.
Note:
Zeroing is only valid for the
“400Ω“ measurement and expires when you select a different
measuring function.
7
Insulation measurement
To make an insulation measurement, select the desired voltage with the rotary switch. Here you
can select a test voltage of 125 V, 250 V, 500 V or 1000 V. Now connect the test leads to your
sample. Press the TEST key to generate the desired test voltage directly. To make a
measurement, press and hold the TEST key. The measurement is finished when you release the
key. Bear in mind that some residual voltage may be present in the meter.
The reading will be shown in the upper part of the display. The test voltage is shown in the lower
part of the display. The measurement range is selected by the meter automatically.
Note:
If the sample carries a voltage of at least 30 V, the meter will display
“>30 V“ and “ “, a
beep sound will be audible and the meter will not make a measurement. Therefore, it is important
to remove any external voltages before each measurement.
7.1
Measuring AC motors
Interrupt the voltage supply of the motor by disconnecting the connection cable of the motor. In
case there are switches on the motor, these must be turned on. To measure the insulation now,
connect one test lead to the supply cable and the other one to the motor.
7.2
Measuring DC motors
Interrupt the voltage supply of the motor by disconnecting the connection cable of the motor. In
case there are switches on the motor, these must be turned on. Now connect one test lead to the
PE connection of the connection cable and the second one to, for example, the carbon brushes
to measure the insulation.
7.3
Measuring insulated cables
To measure the insulation of a cable, make sure that the cable ends are open. Now make a
measurement by measuring each cable core with every other cable core.
