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Installation, Isgs – Siemens ISGS SG8158-00 User Manual

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Installation

Siemens Energy & Automation, Inc.

7

Figure 2.5 Internal Connections

Note: The relay disabled contact should be wired to plant-wide distributed control system or external alarm.

9

3

41

31

33

29

2

Trip 1
Trip Common

Relay Disabled 1

Relay Disabled
Alarm Contact

Relay Disabled 2

Trip 2

Trip 3

19

32

34

30

11

49

(2)

50

(7)

1

20

5

43

7

45

14

21

15

23

17

25

16

27

13

10

4

42

6

44

8

46

22

24

18

26

28

12

48

(3)

DC

DC

RS-485 SEAbus

RS-232

Front Panel

VT 1+

CT 1-1

CT 2-1

CT 3-1

CT N-1

CT 1-2

CT 2-2

CT 3-2

CT N-2

VT 2+

VT 3+

VT 1-

VT 2-

VT 3-

BI B Switch

BI Trip

Impedance Source

Breaker and
Trip Source
Monitor

Impedance Sense

Ground Monitor

+

+

+

+

+

-

-

-

-

-

1

2

3

4

Binary
Input

Current
Input

Voltage
Input

V

H

Power
Supply

Communications
In

Communications
Out

BO 1

BO 2

Trip
Relays

Binary
Outputs

Data +

RxD

Data -

TxD

Reference

Reference
Ground

ISGS

2

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