Connection of High-Voltage Cables

Preparation of Cable Compartment

Access to cable compartment: see Access to the Cable Compartment.

1. Release fastening of cable clips (Figure 59, 1).

2. Remove cable clips (2).

3. Remove rubber sleeves (3).

4. Remove base plate (4) as required.

Figure 59

1 Fastening of cable clips

2 Cable clips

3 Rubber sleeves

4 Base plate

Mount Sealing End and Cable Lug

CAUTION

HAZARD OF INAPPROPRIATE ASSEMBLY Do not use aluminium cable lugs for the cable connection. Materials do not match. Unless otherwise specified by the cable manufacturer, comply with the specified tightening torques and pre-coat contact areas. Refer to Treatment of Firmly Screw-Connected Contact Surfaces . Observe the phase assignment of the switchgear panel. Failure to follow these instructions can result in injury or equipment damage.

Follow the below steps to mount sealing end:

1. Route the individual cables outwards through the cable compartment of the panel to enable assembly of the cable ends.

2. Cut the rubber sleeves to fit the cable diameter, and push them onto the cables (Figure 60).

3. Strip cable ends and assemble the sealing end as specified by the cable manufacturer.

Figure 60 Cut rubber sleeves to size and slip them onto the cables	Figure 61 Mount cable lug

Follow the below steps to mount cable lug:

1. Fasten the individual cables to the appropriate connection surfaces (Figure 62 to Figure 64). In case of two cables per phase: Connect the two cables to the first connection (Figure 63).

2. Re-mount the base plates.

3. Fasten high-voltage cable to the base plates using clamping assemblies (Figure 65 and Figure 66).

4. Screw-fasten the earthing screens (2) of the cables to the earthing bar (3) of the panel.

Figure 62

Figure 63 Connection using 1 - 2 cables	Figure 64 Connection using 8 cables
Figure 65 Clamping assembly for cables with a diameter of ≥ 40 mm	Figure 66 Clamping assembly for cables with a diameter of < 40 mm