Current-Unbalance Protection for Capacitors, 1-Phase
Setting Values for the Function
Automatic compensation Yes
No
Time between switch off and switch on 0.00 s to 60.00 s Increments of 0.01 s
Normalization with Ic Yes
No
Threshold of defective C-
element
1 A @ 50 and 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.15 A to 175.00 A Increments of 0.01 A
1 A @ 1.6 Irated 0.001 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.005 A to 8.000 A Increments of 0.001 A
Setting Values (Overcurrent-Protection Stage I>)
Current threshold I
unbal.
1 A @ 50 and 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.150 A to 175.000 A Increments of 0.01 A
1 A @ 1.6 Irated 0.001 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.005 A to 8.000 A Increments of 0.005 A
Operate delay 0.00 s to 60.00 s Increments of 0.01 s
Measured value compensated
non-compensated
Setting Values (Counter Stage)
Type of counting groups
segregated
sum
Type of counting phases segregated
sum
Max. no. of def. elem. phs A 1 to 1000 Increments of 1
Max. no. of def. elem. phs B 1 to 1000 Increments of 1
Max. no. of def. elem. phs C 1 to 1000 Increments of 1
Max. no. of def. elem. 1 to 1000 Increments of 1
Operate delay 0.00 s to 10000.00 s Increments of 0.01 s
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout differential derived from the parameter
Dropout ratio
If this parameter is not available, a dropout ratio of 95 % applies for overcurrent and of 105 % for undercur-
rent functionality.
Minimum absolute dropout differential
Protection-class current transformer 15 mA sec. (I
rated
= 1 A) or
75 mA sec. (I
rated
= 5 A)
Instrument current transformer 0.5 mA sec. (I
rated
= 1 A) or
2.5 mA sec. (I
rated
= 5 A)
12.26
Technical Data
12.26 Current-Unbalance Protection for Capacitors, 1-Phase
1502 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
To Next Page
Loading...
