Compliance West HT-2000PR, Instruction Manual

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Figure 12. Ground Resistance setting display in standby
Ground Resistance Offset
The offset resistance value is used to compensate the additional resistance of the connections
(cables and internal connections of the tester) between the Dielectric withstand tester and the
device under test, For configuration of this value follow the next steps.
1. Turn the ground check switch to the ON position.
2. Connect the
return
lead and the J3 (Optional) Connector to the HT-PR.
3. Connect the green alligator of the J3 lead to the alligator clip of the
return
lead, wait 1
second, press and hold for 5 seconds the offset ground button in the rear panel (see figure
4).
4. The tester will display the resistance of the cables and will be saved for future testing if
the same cables are used, if the resistance of the test cables exceeds 1.0
Ω , the display
will show “ Cnct ”, Repeat the previous step, if the same result are show you must change
the test cables.
Setting the Ground Check Switch
This switch controls whether the Ground Test is conducted between the chassis and the power
supply cord grounding pin of the unit being tested. The safety agencies require that this test be
conducted on all equipment using a three-wire power supply cord see figure 4. For other types of
equipment, such as some portable lamps and all double-insulated equipment, there are only two
wires in the power supply cord and the ground continuity check is waived by the safety agencies.
If the power supply cord of the equipment being tested has only two pins, the
Ground Check
switch should be set to the Off position. When the Ground Check switch is turned Off, both the
green Ground OK and red Ground Open LED's on the front panel are lit as a reminder to the
operator that the ground continuity test is not being conducted.
If the power supply cord of the equipment being tested has three pins, the
Ground Check switch
should be set to the On position.
When testing with the
Ground Check switch Off, the operator must ensure that the Return lead
is properly connected to exposed dead metal of the equipment being tested for safety and to
ensure that the HT-PR properly reports all failures.