GE Industrial Solutions AKD-20 Low Voltage Switchgear Manuel d'utilisation

Page 37

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AKD-20 Low Voltage Switchgear
Chapter 4. Equipment Installation

37

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After completing the installation of the main bus splice bars, the

joint covers may be mounted and secured by a 3/8-16 nylon bolt

and polyester flat washer if the bus insulation option has been

supplied with the equipment.

5. CONNECT THE TRANSFORMER SECONDARY - The connection

of the transformer secondary to the incoming bus bars in the

transition is made using the flexible connection straps

supplied with the transformer. These connections are always

bolted joints.

The recommended torque for tightening the ½-13 bolts fastening

the transformer connection straps to the incoming bus bars is 35-

40 ft-lbs.

6. INTERCONNECT CONTROL WIRING - Interconnection of control

wiring across shipping splits is accomplished by connecting to

terminal blocks located in the cross-section wiring trough on

top of the equipment shown in Fig. 4-16.

If terminal blocks are provided, each wire must be attached to the

correct point on the terminal block, following the circuit

identification number attached to each wire.

Fig. 4-16. Interconnect control wiring is located in the wiring trough

on top of the equipment

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