Siemens siprotec 7SA6 User Manual

Functions
6-2857SA6 Manual
C53000-G1176-C156-2
Voltage sum internal (measured value
acquisition)
alarm “Fail ΣU Ph-E” (165) as allocated
Voltage symmetry external (primary plant or
voltage transformers)
alarm “Fail U balance” (167) as allocated
Voltage phase rotation Extrem (primary plant or
connection)
alarm “Fail Ph. Seq.” (171) as allocated
Voltage failure,
three-phase,
Fuse failure monitor
external (primary plant or
connection)
alarm
distance protection
blocked
“VT Fuse fail > 10 s” (169) as allocated
Voltage failure,
single-/two-phase,
Fuse failure monitor
external (voltage trans-
formers)
alarm
distance protection
blocked
“VT Fuse fail > 10 s” (169) as allocated
Voltage failure,
three-phase
Extrem (primary plant or
connection)
alarm
distance protection
blocked
“Fail U meas” (168) as allocated
Trip circuit supervision external (trip circuit or
control voltage failure)
alarm “FAIL: Trip cir.”
(6865)
as allocated
Table 6-13 Summary of the device response to detected failures
Monitoring Possible causes Failure response
General alarms
Alarm (function no.) Output
1
) Following three unsuccessful reboot attempts, the device is taken out of service
2
)D.OK=“DeviceOkay”=Livecontactrelay

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English