Siemens SG8158-00 manual 150

Appendix D: Acceptance Test Procedures

ISGS Acceptance Test (continued)			Overvoltage (59) Function
Phase
A B C	Timing
	7.	Set voltage per Table D.4.
		Pickup LED illuminates.
		Display shows PICKUP 59 P1 (2, 3).
		Wisdom software records pickup in event log.
	8.	Relay times out per Table D.4.
		Trip LED illuminates.
		Timer stops as Trip 1 contacts close.
		Trip log indicates trip voltage value and time in pickup.
		Wisdom software records relay trip on Overvoltage.
		Return voltage to nominal and reset timer.
	9.	Remove control power from relay for five seconds; then restore it.
		Trip LED re-illuminates after relay is powered up again.
	10.	Reset relay target.
		Trip LED resets.

Repeat above steps for phase B and phase C; repeat the same steps also for Parameter Set B. Testing may also be done at the user settings following the same procedure.

Table D.4 Test Points for Inverse Overvoltage Curve Characteristics

Percent of Pickup	Time Band 2 (seconds)	Time Band 5 (seconds)	Time Band 9.9 (seconds)
110	20.00	50.00	99.00
125	7.74	19.35	38.32
150	3.64	9.10	18.01
>150	1.56	3.91	7.73

Accuracy of the time curve for 2 ≤ I/Ip ≤ 20 is 5% from the defined value, or 30 ms, whichever is greater.

D

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