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1. Connect the Primary (H) and Secondary (X) cables to the appropriate
connectors on the TR8703 and the transformer under test.
2. Press TEST button. The test will run continuity first and then run the
ratio test.
WARNING: It is important to make sure the Primary (H) and the Secondary
(X) cables are connected properly BEFORE running the test. This is
especially true for the high turn-ratio transformers since dangerous high
voltage may appear on the TR8703 terminals.
NOTE:
Continuity checks for the integrity of the cable connections only. It does
not check for H/X reverse polarity. If the continuity for the Primary
connections is within specified limits, the display shows ---- or
equivalent to a Closed Switch. If the continuity for the Primary
connections is outside the specified limits, the display shows --/-- or
equivalent to an Open Switch
During the Ratio test, the instrument will check for H/X reverse polarity,
short (excessive current) etc. before conducting Ratio test
In this example, the display will appear as shown below:
If the H/X were reversed, the instrument will display the following error
message and terminate the test:
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