Guardian Technologies 4758, 4456, 4390, 4389, 4760 Section, Diagnostic Tests, Part, Transformer TX

SECTION 3.4

DIAGNOSTIC TESTS

PART 3

V-TYPE PREPACKAGED TRANSFER SWITCHES

12.Connect one test lead to TX terminal 1. Connect the other test lead to TX terminal 7. INFINITY should be measured.

13.Connect one test lead to TX terminal 10. Connect the other test lead t TX terminal 7. INFINITY should be

measured.

RESULTS:

For steps 5, 6, and 7, replace transformer if an open is indicated, or if the resistance value indicated is zero. If the resistance value is not within the approximate range, proceed to test 65.

For steps 8 through 13, replace the transformer if it fails any of these steps.

Figure 6. Transformer (TX)

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