Siemens Argus 7SR21 - Page 572

7SR210 & 7SR220 Commissioning & Maintenance Guide
Page 60 of 82 © 2013 Siemens Protection Devices Limited
Power
(xSn)
U/O
DTL
(sec)
P.U.
Power
(xSn)
D.O.
Power
(xSn)
Operate
Time
+/- 0.5Hz
UC
Guard
NOTES
32-1
32-2
If the element is set as 32-n U/C Guarded, the setting can be tested by applying the test current at a level below
the 32-n U/C Guard Setting at a power in the operate range. Increase the current until the relay operates.
UCG
UCG
Setting
(xIn)
Power element
Used for test
Blocked
Current
(D.O.)
Unblocked
Current
(P.U.)
NOTES
U/O
Power
1.1.1.1 Element Blocking
The U/O Power elements can be blocked by Binary Input Inhibit. This functionality should be checked.
Element BI Inhibits
32-1
32-2
Check correct indication, trip output, alarm contacts, waveform record.
When testing is complete reinstate any of the disabled functions.