S&C Instruction Sheet 1011-510
7
Ungrounded Wye Banks
Table 1. Terminal strip contact functions.
BankGuard Plus State
Terminal
Description
UN-
PWR
PWR
ALM
Lock
-OUT
TB1-A
2nd Lockout
C
C
C
O
TB1-B
2nd Lockout
C
C
C
O
TB1-1
Surge Suppressor Return
--
--
--
--
TB1-2
Alarm *
O
C
O
O
TB1-3
Alarm *
O
C
O
O
TB1-4
Alarm *
C
O
C
C
TB1-5
Alarm *
C
O
C
C
TB1-6
Spare
--
--
--
--
TB1-7
2nd Alarm *
O
C
O
O
TB1-8
2nd Alarm *
O
C
O
O
TB1=9
Phase A voltage
--
--
--
--
TB1-10
Phase B voltage
--
--
--
--
TB1-11
Star voltage
--
--
--
--
TB1-12
Star voltage return
--
--
--
--
TB2-A
2nd Lockout
O
O
O
C
TB2-B
2nd Lockout
O
O
O
C
TB2-1
Chassis ground
--
--
--
--
TB2-2
Lockout
C
C
C
O
TB2-3
Lockout
C
C
C
O
TB2-4
Lockout
O
O
O
C
TB2-5
Lockout
O
O
O
C
TB2-6
“b”-contact
--
--
--
--
TB2-7
2nd Alarm *
C
O
C
C
TB2-8
2nd Alarm *
C
O
C
C
TB2-9
Control power - ac common
--
--
--
--
TB2-10
Control power - ac hot
--
--
--
--
TB2-11
Phase C voltage
--
--
--
--
TB2-12
Phase voltage return
--
--
--
--
* See Instruction Sheet1011-530 on page 36 for alarm confi guration
options.
NOTICE
BankGuard Plus relay contacts are rated for:
16A @ 250 Vac, 0.5A @ 125 Vdc, and 16A @ 24 Vdc.
Installation of an interposing relay is mandatory if these ratings could be exceeded.
Summary of Contents for BankGuard PLUS
Page 19: ...S C Instruction Sheet 1011 510 19 Installation and Connection Drawings...
Page 20: ...20 S C Instruction Sheet 1011 510 Installation and Connection Drawings...
Page 21: ...S C Instruction Sheet 1011 510 21 Installation and Connection Drawings...
Page 22: ...22 S C Instruction Sheet 1011 510 Installation and Connection Drawings...
Page 23: ...S C Instruction Sheet 1011 510 23 Installation and Connection Drawings...
Page 24: ...Printed in U S A...
