Siemens 7SA511 manual Power Swing Function, Ground Fault Protection, Automatic Reclose Function

7SA511 Line Protection RelayChapter 6

LCD Text (2nd line)		Description	Possible Tag
Failure	I	Failure detected by measured current sum monitor	C/G
Failure	Up-e	Failure detected by measured voltage sum monitor, phase-	C/G
		ground voltage
5
Failure Up-p		Failure detected by measured voltage sum monitor, phase-phase	C/G
		voltage
Failure Isymm		Failure detected by measured current symmetry monitor	C/G
Failure Usymm		Failure detected by measured voltage symmetry monitor	C/G
Failure Umeas		Loss of measured voltages	C/G
FFM pick-up		Fuse failure monitor has picked up	C/G
Fail. PhaseSeq		Failure detected by phase sequence monitor	C/G
Chs.Error		Check sum error detected in memory	C/G
Chs.S1 Error		Check sum error detected in parameter set A—operation with	C/G
		this set is not possible
Chs.S2 Error		Check sum error detected in parameter set B—operation with	C/G
		this set is not possible
Chs.S3 Error		Check sum error detected in parameter set C—operation with	C/G
		this set is not possible
Chs.S4 Error		Check sum error detected in parameter set D—operation with	C/G
		this set is not possible
Distance Protection, Pilot Protection, & Emergency Overcurrent Protection
Dist. Off		Distance protection is turned off	C/G
Dist. blocked		Distance protection is blocked	C/G
Tele off		Pilot protection function with distance protection is turned off	C/G
Dist.Rec.Flt		Reception signal for pilot protection with distance protection is	C/G
		faulty
Dist. Echo		Echo signal for pilot protection with distance protection has	C
		been transmitted
Emerg. Mode		Emergency overcurrent protection mode is effective; therefore,	C/G
		distance protection is ineffective
Power Swing Function
Power Swing		A power swing is detected	C/G
O/S Trip		An out-of-step trip signal due to power swing detection has been	C
		issued
Ground Fault Protection
E/F Prot. off		For grounded systems, ground fault protection is turned off	C/G
E/F Echo		For grounded systems, echo signal for directional comparison	C
		ground fault protection has been transmitted
>E/F Rec. Fail		For grounded systems, reception signal for directional	C/G
		comparison ground fault protection is faulty
E/F det. OFF		For ungrounded systems, ground fault detection is turned off	C/G
Automatic Reclose Function
AR off		Automatic reclose function is turned off	C/G
AR inoperativ		Automatic reclose cannot be initiated	C/G
Circuit Breaker Test Function
CB Test L1		Trip single-pole 1 by internal CB test function	C
CB Test L2		Trip single-pole 2 by internal CB test function	C
CB Test L3		Trip single-pole 3 by internal CB test function	C
CB Test L123		Trip three-pole has occurred by internal CB test function	C

July 27, 1995 6-7