Siemens ISGS SG8158-00 - Manual (Page 86)

Appendix E: Schematics
80 Siemens Energy & Automation, Inc.
E.2 AC (Capacitor) Trip Systems
The following diagram illustrates a typical connection
scheme for the ISGS relay when using an AC trip system.
Figure E.2 Wiring for AC (Capacitor) Trip System
52 SRC
LS
88
52T 52a 52a
52b
52a
31
3
1
6
1
11
4
15
2
14
AC0 AC1
3 1 4 2
3
1
4
2
Slug
1-Fuse
Slug
1-Fuse
RES
RES
RES
RES
RG
3 4
CS C
95C
1 2
CS T
52
15
16
12
20 19 49
49
48
48
14
21
1
1
17
18
13
T
rip
Common
T
rip 1
T
rip 2
BI T
rip
PS IN2 PS IN1
BI BSW
T
rip Source
Impedance
Sense Circuit*
Power Supply
(AC-DC)
*Contact is
closed when
relay is out of service
95C Optional Remote Closing
Relay Disabled*
Optional RS-485 Communications
Optional RS-485 Communications
Outgoing RS-485 Bus Incoming RS-485 Bus
+ -
(see below)
Case Ground
Data +
Data + Data +
Data -
Data - Data - Shield Shield
Key 52a
Aux Switch (open when breaker is open)
52b
Aux Switch (closed when breaker is open)
52T
Opening Solenoid (Trip)
52SRC
Spring Release Solenoid
88
Spring Charging Motor
CS/C
Control Switch/Close
CS/T
Control Switch/T
rip
R
Red Lamp (breaker open)
G
Green Lamp (breaker open)
95C
Interposing Relay
CTD
Capacitor T
rip Device
LS
???
AC
Supply
(120 V
A
C
Only)
CTD
*Not used with AC configuration.
T
ie impedance source (terminal 17),
ground monitor (16), and impedance sense (18) to AC0.
Breaker
ISGS Relay
E
isv3o_1.bk : isv3osch.frm Page 80 Wednesday, August 7, 1996 10:51 AM