Inrush Detector - Siemens Argus 7SR21 Technical Manual

7SR220 Settings Guide
3.10.5. Trip CCT Supervision
Description
Gn 74TCS-1
Selects whether the trip circuit supervision element 74TCS-1
is enabled
Gn 74TCS-1 Delay
Time delay before trip circuit supervision operates
Gn 74TCS-2
Selects whether the trip circuit supervision element 74TCS-2
is enabled
Gn 74TCS-2 Delay
Time delay before trip circuit supervision operates
Gn 74TCS-3
Selects whether the trip circuit supervision element 74TCS-3
is enabled
Gn 74TCS-3 Delay
Time delay before trip circuit supervision operates
3.10.6. Close CCT Supervision
Description
Gn 74CCS-1
Selects whether the trip circuit supervision element 74CCS-1
is enabled
Gn 74CCS-1 Delay
Time delay before trip circuit supervision operates
Gn 74CCS-2
Selects whether the trip circuit supervision element 74CCS-2
is enabled
Gn 74CCS-2 Delay
Time delay before trip circuit supervision operates
Gn 74CCS-3
Selects whether the trip circuit supervision element 74CCS-3
is enabled
Gn 74CCS-3 Delay
Time delay before trip circuit supervision operates
3.10.7.

Inrush Detector

Description
Gn 81HBL2 Element
Selects whether the phase inrush detector 81HBL2 is enabled
Gn 81HBL2 Bias
Selects the bias method used for magnetising inrush. Phase –
Segregated, each phase blocks itself. Cross – Blocked, each
phase can block the operation of other phases. Sum - Of
Squares, each phase blocks itself using the square root of the
sum of squares of the 2nd harmonic.
Gn 81HBL2 Setting
The magnetising inrush detector operates when the 2nd
harmonic current exceeds a set percentage of the fundamental
current
Unrestricted Page 42 of 107
Range
Disabled, Enabled
0, 0.02 ... 59.98, 60
Disabled, Enabled
0, 0.02 ... 59.98, 60
Disabled, Enabled
0, 0.02 ... 59.98, 60
Range
Disabled, Enabled
0, 0.02 ... 59.98, 60
Disabled, Enabled
0, 0.02 ... 59.98, 60
Disabled, Enabled
0, 0.02 ... 59.98, 60
Range
Disabled, Enabled
Phase, Cross, Sum
0.1, 0.11 ... 0.49, 0.5
© 2013 Siemens Protection Devices Limited
Default
Disabled
0.4 s
Disabled
0.4 s
Disabled
0.4 s
Default
Disabled
0.4 s
Disabled
0.4 s
Disabled
0.4 s
Default
Disabled
Cross
0.2 xI