aThe terminal and bus bar boxes

Explosion-protected terminal and bus bar boxes, switch, type GHG 75.; Exko...

E

Fig. 2: Connection of bolt terminal

50 mm² -240 mm² (max. 15 Nm)

Fig. 3: Mounting the bus bar system, connection up to 240 mm²

9 2 10

11

4 6 7

8

7

1 3

2 3

5

5 9 6

6.4 Flange and metal plates

If flange plates have to be dismantled, (e.g. to drill entry holes), they shall be put back in such a way that the IP protection is maintained.

Ensure that the sealing element fits snugly.

PE conductors fed from outside are to be connected to the PE terminal provided on the flange.

Warning: Metal flanges, metal plates and metal glands shall be incorporated in the potential equalization.

6.5 Closing apparatus / Cover

Before initial operation, any foreign matter shall be removed from the terminal and bus bar boxes

To close the apparatus the enclosure cover shall be closed using the internal square spanner of the catch lock.

6.6 Putting into operation

Before putting the apparatus into operation, the tests specified in the individual national regulations shall be performed. In addition to this, before being put into operation, the correct functioning of the apparatus and of the built-in components (measuring instruments, signal lamps, pushbuttons, etc.) shall be checked in accordance with these operating instructions and other applicable regulations.

The zero setting of the measuring instrument needle shall be checked before putting it into operation. If necessary, the measuring instrument needle shall be set to zero using the adjustment screw.

The incorrect installation and operation of control gear can result in the invalidation of the guarantee.

During servicing, above all the correct state of parts on which the explosion protection depend, (e.g. intactness and efficiency of the flameproof components, the enclosure, the seals and cable entries), and the switch mechanism function of the control switches shall be checked.

If, in the course of servicing, it is ascertained, that repairs are necessary, section 8 of these operating instructions shall be observed.

8 Repairs / Modifications

Only original CEAG parts shall be used for carrying out repairs.

Repairs that affect the explosion protection may only be carried out by CEAG or by a qualified electrician in compliance with the respective national regulations

(IEC/EN 60079-19).

Apparatus modifications or design changes are not permitted; excepted from this are the fitting of additional cable entries and the installation of connection terminals within the scope of the approvals for the respective apparatus or according to details laid down by the manufacturer.

In the event of damage to the flameproof encapsulation of control components, replacement of these components is mandatory. In case of doubt, the respective apparatus shall be sent to CEAG for repair.

When replacing these individual built-in components (measuring instruments, pushbuttons, etc.), point 6.2 ”Opening apparatus / Electrical connection” shall be observed.

4 11 1

1 Copper rail

2 Cable lug

3 Screw hook M10 x 55

4 Clamping plate

5 Connection screw M12 x 30

6 Lock washer M10

7 Lock washer M12

8 Washer M 12

9 Nut M10

10 Nut M12

11 Holding bracket

7 Maintenance / Servicing

The valid national regulations for the servicing / maintenance of electrical apparatus for use in potentially explosive atmospheres shall be observed

(IEC/EN 60079-17).

Prior to opening the enclosure, it is necessary to ensure that the voltage supply has been isolated or to take suitable protective measures.

In the case of intrinsically safe circuits, it is permissible to carry out work while the circuit is live.

The necessary intervals between servicing depend upon the specific application and shall be stipulated by the operator according to the respective operating conditions.

9 Disposal / Recycling

The respective valid national regulations for waste disposal shall be observed when disposing of apparatus.

To facilitate recycling of individual parts, parts made of moulded plastic shall bear the marking for the type of plastic used.

The product range is subject to changes and additions.

18 EATON’s Crouse-Hinds Business

Explosion-protected terminal and bus bar boxes, switch, type GHG 75.; Exko...

E

Fig. 4: Universal connection up to 150 mm² Fig. 5: Connection up to 50 mm²

Cable lug

Nut M10 20 Nm

Lock washer and

washer M10

Cable lug

Nut M8 10 Nm

Lock washer

M8

Connection

plate

Fig. 6: PE / N - Connection up to 50 mm²

Nut M8 10 Nm

Cable lug

Lock washer

M8 lug

Holding

Screw hook M8

Screw hook M8

Screw hook M10

Fig. 7: Connection up to 35 mm²

Nut M8 10 Nm Cable lug

Torsion

protection

Copper rail

Holding bracket

Lock washer

M8

Screw hook M8

Fig. 8: Shift protection

L 1 - L 3

Nut M8 10 Nm

Lock washer

M8 bracket

Copper

Screw hook M8

Fig. 9: Extension system

400 A Nut M8 10 Nm

Lock washer and

M8 plate

Screw hook M8

250 A Nut M8 10 Nm PE / N Nut M8 10 Nm

Lock washer

M8

Lock washer

and

washer

Screw hook M8

Copper

Screw hook M8

Fig. 10: Bus bar system 250 / 400A

Warning: Each rail shall be safeguarded against displacement using the shift protection.

The minimum clearances between the enclosure wall and the bus bars, as well as between the connections shall be maintained.

Extension

system 400 A

Extension

system 250 A

Enclosure seal Enclosure wall Shift protection

EATON’s Crouse-Hinds Business 19

Explosion-protected terminal and bus bar boxes, switch, type GHG 75.; Exko...

E

Fig. 11: Connection up to 240 mm²

L 1, L 2, L 3

Fig. 12: Connection up to 240 mm²

(single rail connection) N, PE

Fig. 13: Shift protection

Nut M12 40 Nm Nut M12 40 Nm Nut M10 20 Nm

Lock washer and

M12

Lock washer and

M12

Lock washer and

M10

Cable

Screw hook M12

Cable

Copper

Spacer

Screw hook M12 plate rail

Clamp

Washer M10

Hex-head screw M10

Fig. 14: Connection up to 70 mm²

L 1, L 2, L 3

Fig. 15: Connection up to 70 mm²

(single rail connection) N, PE

Nut M10 20 Nm

Nut M10 20 Nm

Lock washer and

M10

Lock washer and

M10

Fig. 16: Extension system

Nut M12 40 Nm

Lock washer and

M12

Cable

Screw hook M10

Fig. 17: Bus bar system 630 A

Copper

Spacer

Screw hook M10

Warning: Each rail shall be safeguarded against displacement using the shift protection.

The minimum clearances between the enclosure wall and the bus bars, as well as between the connections shall be maintained.

Screw hook M12

Enclosure seal Enclosure wall

Extension

system 630 A

20 EATON’s Crouse-Hinds Business

Shift protection