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Section 1
Operating Instructions
Theory of Operation
The HTT-1S is designed to be a solution for fast and easy function testing of
the HT-S series of dielectric withstand and continuity testers, including high
current models delivering up to 30 amps. It allows function tests of all three
failure modes to ensure that your tester is functioning properly.
The HTT-1S is designed to verify calibration points at a fixed value.
The HTT-1S, used daily, will prove function of the safety testers before shifts
or before testing of a lot of products. It is provided with three switches which
simulate passing and failing equipment for ground continuity, high leakage
between primary circuits and ground, and dielectric withstand failure between
primary and ground circuits. While all three switches can be simultaneously set
for failing modes, we recommend that the HTT-1S be set with one failure at a
time to ensure that your testers are functioning correctly.
A proper test plan would be constituted of the following tests:
1.
Connect HTT-1S to the tester outputs.
2.
Set all three switches on the HTT-1S to ‘PASS’.
3.
Verify passing result on the Tester.
4.
Set the Ground switch on the HTT-1S to ‘FAIL’; set both other switches to
‘PASS’.
5.
Verify Ground failure on the Tester.
6.
Set the Leakage switch on the HTT-1S to ‘FAIL’; set both other switches to
‘PASS’.
7.
Verify Leakage current failure on the Tester.
8.
Set the Hipot switch on the HTT-1S to ‘FAIL’; set both other switches to
‘PASS’.
9.
Confirm high voltage output by watching for a spark in the Arc Detect window
of the HTT-1S; verify dielectric breakdown failure on the Tester.
The above plan is presented in more detail in the Operation Section of this
Manual; showing proper connection of the HTT-1S to any dielectric tester and
any high current ground continuity tester you may wish to test.
If any of the tests above return unanticipated results, you may have a problem
with your tester. It is recommended that it be removed from service until the
Summary of Contents for HTT-1S
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