Summary Of Required Settings - Siemens 7SR242 Duobias Technical Manual

Summary of Required Settings

CT/VT CONFIG >
W1 Phase Input
W1 Phase CT Ratio
W2 Phase Input
W2 Phase CT Ratio
FUNCTION CONFIG>
Gn Differential
Gn Inrush Detector
DIFFERENTIAL PROT'N >
Gn W1 ICT Multiplier
Gn W1 ICT Connection
Gn W2 ICT Multiplier
Gn W2 ICT Connection
(Note that the above settings produce ICT
DIFFERENTIAL PROT'N > 87BD >
Gn 87 BD Element
Gn 87BD Initial:
Gn 87BD 1st Bias Slope:
Gn 87BD 1st Bias Slope Limit:
Gn 87BD 2nd Bias Slope Type:
Gn 87BD 2nd Bias Slope:
Gn 87BD Delay:
Gn 87BD Inrush Action:
Gn 87BD Overfluxing Action:
DIFFERENTIAL PROT'N > 87HS >
Gn 87HS Element
Gn 87HS Setting:
Gn 87HS Delay:
Gn 87HS Inrush Action:
Gn 87HS Overfluxing Action:
SUPERVISION > INRUSH DETECTOR >
Gn81HBL2 Element
Gn 81HBL2 Bias
Gn 81HBL2 Setting
OUTPUT CONFIG>OUTPUT MATRIX>
87BD
87HS
OUTPUT CONFIG>BINARY OUTPUT CONFIG>
CB1 Trip Contacts
CB2 Trip Contacts
©2015 Siemens Protection Devices Limited
1A
400:1
1A
1600:1
Enabled
Enabled
1.02
Yd11
1.06
Yy0
= 1.00)
OUT
Enabled
0.3 x In (0.3 x ICT
0.3x (OLTC = +10% to -20%)
4 x In (1/0.14 x 0.5 = 3.6 x ICT
Line (Default value)
1.5x (Default value)
0.005s
Inhibit
Off
Enabled
8 x In (> I
3PH THRU FAULT
0.005s
Off
Off
Enabled
Cross (Default value)
0.2 x I (Default value)
BOn, Ln
BOn, Ln
BOn
BOn
)
OUT
)
OUT
i.e. 1/0.14 = 7.14 x ICT
Chapter 7 Page 17 of 64
)
OUT