GE DTR GEK-106305A, Instruction Manual

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7. ACCEPTANCE TESTS
68 DTR Digital Tap Changer Controller GE—106305A
7.9.2 VERIFICATION OF THE NUMBER OF “SUCCESSIVE OPERATIONS”
Set the relay as follows
GENERAL SETTINGS:
Nº OPERATIONS 0
Nº SUCCESSIVE OPERATIONS 4
TIME WINDOW 1 min.
COUNTERS:
Nº OPERATIONS 0
Verify that after finishing the following sequence, S15 (SUCCESSIVE OPERATIONS) is activated.
Before initiating the sequence, apply a zero to inputs E1, E2, E3, E4, E5, E6
1. Activate E1 . (The relay will show that it is on Tap 1)
2. Apply a pulse to “TAP-UP” and wait for S1 to activate.
3. Deactivate E1 and activate E2 (Move from Tap 1 to Tap 2).
4. Apply a pulse to “TAP-UP” and wait for S1 to activate.
5. Activate E1 . (Move from Tap 2 to Tap 3).
6. Apply a pulse to “TAP-UP” and wait for S1 to activate.
7. Deactivate E1 and E2, and activate E3. (Move from Tap 3 to Tap 4)
8. Apply a pulse to “TAP-UP” and wait for S1 to activate.
9. Activate E1 . (Move from Tap 4 to Tap 5)
10. Apply a pulse to “ TAP-UP ” and check that S15 activates
With the previous settings, set the COUNTERS and No OPERATIONS settings to 0, and after the following
sequence, check that S15 doesn’t activate, and that the number of operations when finishing the sequence remains
at 0.
1. Activate E1.
2. Apply a pulse to “TAP-UP” and wait for 20 s.
3. Deactivate E1 and E2, and activate E3.
4. Apply a pulse to “TAP-UP” and wait for 20s.
5. Activate E1 .
6. Apply a pulse to “TAP-UP” and wait for 20 s.
7. Deactivate E1 and E2, and activate E3
8. Apply a pulse to “TAP-UP” and wait for 20s.
9. Activate E1.
10. Apply a pulse to “TAP-UP” ; S15 should not operate.