BQT6904800 -03

Access to the Cable Compartment from Front Side

To access the cable compartment from front side (AFL):

Opening of Cable Compartment Door

To open the cable compartment door:

  1. Release the securing bolts (2) on the cable compartment (1) with standard double-bit key. Refer to Figure 54.

  2. Swing the cable compartment door (3) to open it.

  3. The cable compartment is now accessible from the front.

Figure 54
Access to Cable Compartment

1

Cable compartment

2

Securing bolts

3

Cable compartment door

Removal of Fuse, VT, and Surge Arrester from 12/17.5 kV Cubicle

Removal of Fuse

  1. Press the fuse lock (1) , and pull the fuse (2) upwards.

  2. Remove the fuse (2). Refer to Figure 55.

NOTE: Follow the steps in the reverse order to assemble the fuse.


Removal of VT

  1. Unscrew the M10 screws (4) and remove the washer (5) provided on the mounting plate (6) on the either side of VT (7). Refer to Figure 55.

  2. Remove the fuse lock (2) from fuse connection copper bar (3) and VT connection copper bar (8).

  3. Remove the VT (6).

NOTE: Follow the steps in the reverse order to assemble the VT.


Figure 55
Removal of Fuse and VT 12/17.5 kV

1

Fuse lock

5

Washer

2

Fuse

6

Mounting plate

3

Fuse connection copper bar

7

VT

4

M10 screws

8

VT connection copper bar


Removal of Surge Arrester Assembly

  1. Unscrew the M12 screws (4) provided on both sides. Refer to Figure 56.

  2. Remove the terminal copper bar (2) from the VT connection copper bar (1).

  3. Remove the surge arrester (3). Refer to Figure 56.

NOTE: Follow the steps in the reverse order to assemble the surge arrester.

Figure 56
Removal of Surge Arrester Assembly 12/17.5 kV

1

VT connection copper bar

3

Surge Arrester

2

Terminal copper bar

4

M12 Screws

Removal of Fuse, VT, and Surge Arrester from 24 kV Cubicle

Removal of Fuse

  1. Press the snap lock (1) of the fuse box, and pull it upwards.

  2. Remove the fuse (2). Refer to Figure 57.

NOTE: Follow the steps in the reverse order to assemble the fuse.


Removal of VT

  1. Unscrew the M10 screws (3) and remove the washer (4) provided on the mounting plate (5) on the either side of VT (6). Refer to Figure 57.

  2. Unscrew fixed VT connection copper bar (7) to the CT-VT connector (8) to access the VT.

  3. Remove the VT (6).

NOTE: Follow the steps in the reverse order to assemble the VT.

Figure 57
Removal of Fuse and VT 24 kV

1

Snap lock

5

Mounting plate

2

Fuse

6

VT

3

M10 screws

7

VT connection copper bar

4

Washer

8

CT-VT connector


Removal of Surge Arrester Assembly

  1. Unscrew the M10 screws (1) provided on both sides. Refer to Figure 58.

  2. Remove the terminal copper bar (2) from the VT connection copper bar (1).

  3. Remove the surge arrester (2). Refer to Figure 48.

NOTE: Follow the steps in the reverse order to assemble the surge arrester.

Figure 58
Removal of Surge Arrester Assembly 24 kV

1

VT connection copper bar

3

Surge Arrester

2

Terminal copper bar

4

M10 Screws

After removing the fuse, VT, and surge arrester the cable compartment is fully accessible.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
  • Ensure that all components (fuse, VT, surge arrester) that were removed to access the cable compartment are properly reinstalled.
  • Close the cable compartment door before switching OFF the E/S.
Failure to follow these instructions will result in death or serious injury.

Closing the Cable Compartment Door

After completing assembly work, Close the cable compartment door (1) and lock the securing bolts (2) with standard double-bit key. Refer to Figure 54.

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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