Appendix D: Acceptance Test Procedures
D Acceptance Test Procedures
When performing the acceptance tests, follow the sequence listed here; first test protective function 51, then 50, etc.)
Note: The following procedures should be performed using accurately calibrated test equipment connected to a source free of harmonics. Refer to Figure D.1 for connection diagram.
ISGS Acceptance Test | Phase Time Overcurrent (51) Function |
Set the ISGS as follows: |
|
Parameter Set A | 7103 |
5000:5 Current Transformer (CT) | 1101 |
Curve SEA 5, Very Inverse | 1702 |
1 A Nominal Pickup | 1703 |
Time Dial per Chart | 1705 |
Trip Matrixed to Trip 1 Contact | 6401 |
Disable Other Conflicting Functions | 1501, 1551, 1601, 1651, 1801, 1901, 2001, 2301 |
Phase
A B C Connections
1. Connect the appropriate source of control voltage to terminals 13 (+) and 12
Relay Disabled contact on terminals 19 and 20 opens.
2.Connect suitable variable source current
to phase A, terminals 3 and 4,
to phase B, terminals 5 and 6,
to phase C, terminals 7 and 8,
to neutral, terminals 9 and 10.
3. Connect timer to Trip 1 contacts, terminals 1 and 2.
Pickup
4. Increase current until relay picks up (this should occur at 1.06 x pickup.
Pickup LED illuminates.
Wisdom software records pickup in event log.
Return current to zero and reset timer.
Timing
5. Apply appropriate value of current for the test. The results match Table D.1.
Pickup LED illuminates.
Display shows PICKUP 51 P1 (2, 3).
Wisdom software records pickup in event log.
D
Siemens Energy & Automation, Inc. | 63 |
