BQT6904400-01

Installing Busbars

Assemble the busbar connection while installing each cubicle.

NOTE: Retrieve the following components:
  • The main busbar in the cubicle packaging, and

  • The busbar shims and hardware bag in the cubicle packaging.

  1. Access the busbars through the side access of the cubicle.

    NOTE: It is also possible to reach the busbar from within the cubicle. Refer to Access to the Busbar Compartments, User Guide (BQT6904800).
  2. Place the busbar between the two previously assembled cubicles.

    NOTE: Repeat the above operations each time a switchboard cubicle is placed.
  3. For standard torque values, refer to Standard Tightening Torques and comply with the specified torque values.

Center Cubicle – 12/17.5 kV

Figure 31
Tubular Busbar Arrangement of 1250 A for 1250 A Feeder with Tubular Droppers

1

Screw M12 x 65

4

Tubular dropper

2

Washer M12

5

Nut M12

3

Tubular busbar

6

Boot(1)

(1) Boots are not required for 17.5 kV.

Figure 32
Tubular Busbar Arrangement of 2000 A for 1250 A Feeder with Tubular Droppers

1

Screw M12 x 65

4

Tubular dropper

2

Washer M12

5

Nut M12

3

Tubular busbar

6

Boot(1)

(1) Boots are not required for 17.5 kV.

Figure 33
D Shape Busbar Arrangement of 2500 A for 1250 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 34
D Shape Busbar Arrangement of 4000 A for 1250 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 35
Tubular Busbar Arrangement of 2000 A for 2000 A Feeder with Tubular Droppers

1

Screw M12 x 65

4

Tubular dropper

2

Washer M12

5

Nut M12

3

Tubular busbar

6

Boot(1)

(1) Boots are not required for 17.5 kV.

Figure 36
D Shape Busbar Arrangement of 2500 A for 2000 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 37
D Shape Busbar Arrangement of 4000 A for 2000 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 38
D Shape Busbar Arrangement of 2500 A for 2500 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 39
D Shape Busbar Arrangement of 4000 A for 2500 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 40
D Shape Busbar Arrangement of 3150 A for 3150 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 41
D Shape Busbar Arrangement of 4000 A for 3150 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Figure 42
D Shape Busbar Arrangement of 4000 A for 4000 A Feeder with Tubular Droppers

1

Screw M12 x 65

5

Tubular dropper

2

Washer M12

6

Nut M12

3

D shape busbar

7

Boot(1)

4

Spacer

   

(1) Boots are not required for 17.5 kV.

Center Cubicle – 24 kV

Figure 43
D Shape Busbar Arrangement of 2500 A for 2500 A Feeder

1

Nut M12

5

Bolt M12 x 60

2

Washer M12

6

Boot cover(1)

3

Spacer

7

Boot

4

D shape busbar

8

Droppers

(1) Knock-out the D-shaped busbar entry section from the boot cover on site.

Figure 44
D Shape Busbar Arrangement of 2500 A for 1250 A Feeder

1

Nut M12

5

D shape busbar

2

Washer M12

6

Screw M12 x 55

3

Tubular dropper

7

Boot

4

Spacer

   

Figure 45
Flat Busbar Arrangement of 2500 A for 2500 A Feeder

1

Nut M12

5

Spacer

2

Washer M12

6

Screw M12 x 70

3

Flat busbar

7

Boot cover(1)

4

Droppers

8

Boot

(1) Knock-out the flat busbar entry section from the boot cover on site.

Figure 46
Flat Busbar Arrangement of 2500 A for 1250 A Feeder with Tubular Droppers

1

Nut M12

5

Tubular dropper

2

Washer M12

6

Screw M12 x 70

3

Flat busbar

7

Boot

4

Spacer

   

Figure 47
Flat Busbar Arrangement of 2500 A for 1250 A Feeder with Flat Droppers

1

Nut M12

5

Flat dropper

2

Washer M12

6

Screw M12 x 60

3

Flat busbar

7

Boot cover(1)

4

Spacer

8

Boot

(1) Knock-out the flat busbar entry section from the boot cover on site.

Figure 48
Flat Busbar Arrangement of 1250 A for 1250 A Feeder with Flat Droppers

1

Nut M12

5

Screw M12 x 55

2

Washer M12

6

Boot cover(1)

3

Flat dropper

7

Boot

4

Flat busbar

   

(1) Knock-out the flat busbar entry section from the boot cover on site.

Figure 49
Tubular Busbar Arrangement of 1250 A for 1250 A Feeder with Tubular Droppers

1

Screw M12 x 55

4

Tubular dropper

2

Washer M12

5

Nut M12

3

Tubular busbar

6

Boot

Figure 50
Flat Busbar Arrangement of 1250 A for 1250 A Feeder with Tubular Droppers

1

Nut M12

5

Flat droppers

2

Washer M12

6

Screw M12 x 55

3

Tubular dropper

7

Boot

4

Spacer

   

End Cubicle

Figure 51
D Shape Busbar Arrangement of 2500 A for 2500 A Feeder

1

Nut M12

5

Bolt M12 x 60

2

Washer M12

6

Boot cover(1)

3

Spacer

7

Boot

4

D shape busbar

8

Droppers

(1) Knock-out the D-shaped busbar entry section from the boot cover on site.

Figure 52
D Shape Busbar Arrangement of 2500 A for 1250 A Feeder

1

Nut M12

5

D shape busbar

2

Washer M12

6

Screw M12 x 55

3

Tubular dropper

7

Boot

4

Spacer

   

Figure 53
Flat Busbar Arrangement of 2500 A for 2500 A Feeder

1

Nut M12

5

Spacer

2

Washer M12

6

Screw M12 x 70

3

Flat busbar

7

Boot cover(1)

4

Droppers

8

Boot

(1) Knock-out the flat busbar entry section from the boot cover on site.

Figure 54
Flat Busbar Arrangement of 2500 A for 1250 A Feeder with Tubular Droppers

1

Nut M12

5

Tubular dropper

2

Washer M12

6

Screw M12 x 70

3

Flat busbar

7

Boot

4

Spacer

   

Figure 55
Flat Busbar Arrangement of 2500 A for 1250 A Feeder with Flat Droppers

1

Nut M12

5

Flat dropper

2

Washer M12

6

Screw M12 x 60

3

Flat busbar

7

Boot cover(1)

4

Spacer

8

Boot

(1) Knock-out the flat busbar entry section from the boot cover on site.

Figure 56
Flat Busbar Arrangement of 1250 A for 1250 A Feeder with Flat Droppers

1

Nut M12

5

Screw M12 x 55

2

Washer M12

6

Boot cover(1)

3

Flat dropper

7

Boot

4

Flat busbar

   

(1) Knock-out the flat busbar entry section from the boot cover on site.

Figure 57
Tubular Busbar Arrangement of 1250 A for 1250 A Feeder with Tubular Droppers

1

Screw M12 x 55

4

Tubular dropper

2

Washer M12

5

Nut M12

3

Tubular busbar

6

Boot

Figure 58
Flat Busbar Arrangement of 1250 A for 1250 A Feeder with Tubular Droppers

1

Nut M12

5

Flat droppers

2

Washer M12

6

Screw M12 x 55

3

Tubular dropper

7

Boot

4

Spacer

   

BSC - BSR Cubicle

Figure 59
Tubular Busbar Arrangement of 1250 A for 1250 A BSC - BSR with Flat Droppers

1

Flat dropper

4

Nut M12

2

Tubular busbar

5

Screw M12 x 55

3

Washer M12

6

Boot

Figure 60
Flat Busbar Arrangement of 2500 A for 2500 A BSC - BSR with Flat Droppers

1

Droppers

5

Spacer

2

Flat busbar

6

Screw M12 x 70

3

Washer M12

7

Boot cover(1)

4

Nut M12

8

Boot

(1) Knock-out the flat busbar entry section from the boot cover on site.

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