4 ct table for pbvi board, Ct table for pbvi board, Table 2 – Liebert Distribution Monitoring LDM User Manual

Page 14

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Installation

10

4.4

CT Table for PBVI Board

Table 2 shows the configuration of large branch circuit breakers and their CT assignments.

Table 2

Wiring configuration of large branch circuit breakers

Configuration 1: Four Modules

Connector P3 (A)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

CT

CT1

CT2

CT3

CT4

CT5

CT6

CT7

CT8

CT9

or IG

Connector P4 (B)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

CT

CT10

CT11

CT12

CT13

CT14

CT15

CT16

CT17

CT18

or IG

Configuration 2: Two Modules With Large Branch Breaker CTs

Connector P3 (A)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

CT

LB1

LB2

LB3

LB4

LB5

LB6

LB7

LB8

LB9

or IG

Connector P4 (B)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

CT

LB10

LB11

LB12

LB13

LB14

LB15

LB16

LB17

LB18

or IG

Configuration 3: Four Modules With Two 5-Wire Subfeed Breaker CTs

Connector P3 (A)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

CT

LB1

LB2

LB3

LB4

LB5

IG

Phase

A1

B1

C1

N1

G1

Connector P4 (B)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

CT

LB6

LB7

LB8

LB9

LB10

IG

Phase

A2

B2

C2

N2

G2

Configuration 4: Four Modules With Three 5-Wire Subfeed Breaker CTs

Connector P3 (A)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

W

B

CT

LB1

LB2

LB3

LB4

LB5

LB11

LB12

IG

Phase

A1

B1

C1

N1

G1

N3

G3

Connector P4 (B)

Pins

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Wire Color

W

B

W

B

W

B

W

B

W

B

W

B

W

B

CT

LB6

LB7

LB8

LB9

LB10

LB11

LB12

LB13

IG

Phase

A2

B2

C2

N2

G2

A3

B3

C3

W = White
B = Black

IG = Isolated Ground CT
LB = Large Branch Breaker CT

A = A Phase CT
B = B Phase CT
C = C Phase CT

N = Neutral CT
G = Ground CT

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