Siemens SG8158-00 manual Trip Systems, AC Capacitor

connection	system.
typical	ACtrip

AC1

1

2

1

1-Fuse

RES

RES

1

Trip

13

1-Fuse

1

Optional

48

CS

Common

PS

+

R

G

IN1

RS-485

2

2

T

Communications

-

Trip Source

Power

(see below)

49

Trip 1

Trip 2

Case

3

Impedance

Supply

Ground

CS

Sense Circuit*

(AC-DC)

95C

19

C

Relay

4

PS

BI

BI

Disabled*

AC Supply

IN2

Trip BSW

20

2

11

17

16

18

12

15

14

(120 VAC

ISGS Relay

Only)

3

13

16

4

11

1

*Contact is closed when

52

52a

relay is out of service

52

95C

LS

88

CTD

SRC

52T

Optional

RES

RES

52a

Remote

Breaker

Closing

4

15

14

2

52a

52b

Slug

3

3

4

Siemens Energy & Automation, Inc.

Appendix E: Schematics

Trip Systems	illustrates a	when using an
E.2 AC (Capacitor)	The following diagram	scheme for the ISGS relay

AC0Slug

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

88Spring Charging Motor CS/C Control Switch/Close CS/T Control Switch/Trip

R Red Lamp (breaker open)

G Green Lamp (breaker open)

95C Interposing Relay

CTD Capacitor Trip Device

LS ???

*Not used with AC configuration.

Tie impedance source (terminal 17), ground monitor (16), and impedance

sense (18) to AC0.

Shield

Incoming

Data + RS-485 Data - Bus

Optional	48	Data +	Data +	Outgoing
RS-485		Data -	Data -
Communications				RS-485
	49
			Shield Bus

E