7SR11 & 7SR12 Commissioning and Maintenance Guide
©2017 Siemens Protection Devices Limited Chapter 6 Page 57 of 72
(xSn)
(sec)
Power
Power
Time
Guard
If the element is set as 32S-n U/C Guarded, the setting can be tested by applying the test current at a level below
the 32S-n U/C Guard Setting at a power in the operate range. Increase the current until the relay operates.
Setting
Used for test
Current
Current
2.17.1.1 Element Blocking
The U/O Power elements can be blocked by Binary Input Inhibit. This functionality should be checked.
Check correct indication, trip output, alarm contacts, waveform record.
When testing is complete reinstate the disabled functions.
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