Settings For Undervoltage Protection - Siemens SIPROTEC 7SJ62 Instruction Manual

Functions

6.11.2.5 Settings for Undervoltage Protection

Addr. Setting Title
5101 FCT 27
5102 27–1 PICKUP
5103 27–1 PICKUP
5105 27–1 DOUT RATIO 1.05
5106 27–1 DELAY
5110 27–2 PICKUP
5111 27–2 PICKUP
5112 27–2 DELAY
5120 Current
Supervision
6-118
Note: When switching off the &855(17 683(59,6,21 setting under Address ,
the device immediately picks up if voltage is not present and the undervoltage protec-
tion is switched on. The device cannot be programmed if in pickup. Apply 3 phase volt-
age to continue with programming!
The 50 element "%NU&ORVHG , 0,1" is used in other protective functions as well,
including breaker failure protection, overload protection, and start inhibit for motors.
Setting Options
OFF
ON
Alarm Only
~
30 210 V
~
30 120 V
~
3.00
~
0.00 60.00 sec.
~
30 210 V
~
30 120 V
~
0.00 60.00 sec.
OFF
ON
Default Setting
OFF 27 Undervoltage Protection
75 V Pickup voltage 27–1, phase-gnd VTs
75 V Pickup volt. 27–1, phase-phase VTs
1.20 Dropout / Pickup for 27–1only
1.50 sec. Delay time for 27–1
70 V Pickup voltage 27–2, phase-gnd VTs
70 V Pickup volt. 27–2, phase-phase VTs
0.50 sec. Delay time for 27–2
ON Current Supervision
Comments
7SJ62 Manual
C53000-G1140-C121-1