Baker D30R, Руководство пользователя

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Troubleshooting
12/3/2009 | 71-022 V6
D30R 76
Service: What to do first
?
Because history has shown that several simple solutions which do not require return of an
unit may arise, please perform the following checks.
Open condition display
Note: the figures below. Is the surge waveform like this?
If yes, the unit may have at least one broken test lead causing an Open condition. In most
cases, the test lead in common with the two TLS positions that produces these types of wave
patterns is the lead which is broken.
Verify this by pulling on the book/clip assembly of the lead. A broken test lead will stretch. If
the lead does not stretch, repeat this procedure at one foot intervals for the length of the
lead. If the leads of the tester are good, check the connections and continuity of the test
winding.
HiPot display checks
The HiPot display shows only the Voltage or Current bar. One of three problems might exist.
−
The item being tested is in fact faulty and has either low insulation resistance or open
connections.
−
The tester has an internal problem.
−
The tester has a test lead problem as shown above for an Open Condition.
Disconnect the test leads from the motor and isolate the tester from any grounded surface.
Reduce the Output to minimum and attempt a HiPot test with an open lead condition. The
display should indicate a rising voltage bar. The current bar may rise slightly but fall back to
zero when the output increase is stopped.
Note:
It is not necessary to run the output control at a high level to determine if the analyzer
is working properly.
If the display still shows
NO voltage bar call Baker Instrument Company, an SKF Group
Company Service Department. Use a meter to confirm the insulation resistance of the device
being tested.
Appendix B-1: Open condition display