Connection Of The Auxiliary Circuits - ABB eVD4 Installation And Service Instructions Manual

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7.8. Earthing

Earth the fixed version circuit-breaker by means of the special

screw marked with the relative symbol.

Clean and degrease the area around the screw to a diameter

of about 30 mm and, on completion of assembly, cover the

joint again with Vaseline grease.

Use a conductor (busbar or braid) with a cross section

conforming to the Standards in force.

7.9. Connection of the auxiliary circuits

Note: the minimum cross section of the wires used for the

auxiliary circuits must not be less than the one used for the

internal wiring. Furthermore, they must be insulated for 3 kV

test voltage.

7.9.1. Socket wiring Kit

The eVD4 socket wiring kit allows simple and rapid

construction of the panel wiring part. It consists of:

– 58-pin socket pre-engineered for Ethernet electric ports (1)

– Cables 1.5 metres long with 2.5 mm

cables for the power connections and with 1 mm

section for the signal connections

– Serial cable 1.5 m long for the signal connection with the

HMI fitted with special connector on the end (2)

– 2 Ethernet connection modules 1.5 m long with cylindrical

connector on the socket side and RJ45 connector on

the other end. Allows easy integration of the eVD4 in

communication systems based on Ethernet (3)

Fig. 10

cross section copper

cross

7.9.2. Withdrawable and fixed circuit-breaker

The auxiliary circuits of the withdrawable and fixed circuit-

breaker are fully factory-wired up to the connector (fig. 11).

For external connections, refer to the electric wiring diagram

of the switchgear.

eVD4 circuit-breaker for UniGear switchgear and PowerCube units.

Fig. 11

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