Compliance West HTT-1S, Instruction Manual

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Section 4
Troubleshooting the HTT-1S
The HTT-1S requires an annual calibration. If the HTT-1S does not operate as
described in the Theory of Operation section, and the equipment connected to the
HTT-1S has been verified to be in good working condition, then the HTT-1S
should be returned to Compliance West USA for inspection and/or repair.
Table 3 shows expected results for a known good hipot tester for all
recommended operating modes. Table 4 and 5 shows the expected values to be
measured with a resistance meter. Values of less than 1 ohm should be measured
with a high precision resistance meter.
Switch designation / Switch position
Operating mode
GROUND LEAKAGE HIPOT
PASS PASS PASS
No failure: the tester connected to the
HTT-1S should indicate test completion
with a passing result.
FAIL PASS PASS
Ground Fail: the tester connected to the
HTT-1S should indicate a “ground open”
or “ground fail” condition.
PASS FAIL PASS
Leakage Fail: the tester connected to the
HTT-1S should indicate an “excess
leakage” or “excess current” failure.
PASS PASS FAIL
Hipot Fail: The tester connected to the
HTT-1S should indicate a “hipot fail” or
“dielectric failure”. The high-voltage arc
that occurs to create the simulated test
failure is visible through the ARC VIEW
window.
Table 3: HTT-1S Normal operating modes and expected results.