ABB UniGear ZS1 Instruction Manual page 81

Figure 129: Testing and earthing module with:
- Actuating bars, removable - top position for bottom shutter;
- Contact arms, removable
- Insulating plate with alternative mounting positions for cable or busbar earthing
(turn through 180 ° for busbar earthing);
- Contact systems, replaceable for different contact pin diameters on the switchgear;
- Ball handles, removable, for voltage tests;
- Short-circuiting connection
133.1 Earthing cable
142 Testing and earthing module with manual mechanism
142.1 Actuating bars (1 pair)
142.2 Contact arms (3 pcs.)
142.3 Contact systems
142.4 Ball handles (3 pcs.)
142.5 Insulating plate with 3 removable bushings
142.6 Bushings
142.7 Contact pin
142.8 Short-circuiting connection, complete
• Insert the earthing module 142 with short-circuit link 142.8 mounted and earthing cable 133.1
returned from the test/disconnected position into the service position in the panel with hand crank
121. For safety reasons, insert the module only with the circuit- breaker compartment door closed
and with door catches 1.8 locked (see Fig. 5/20);
• Display earthing warning label on the switchgear panel door;
• Secure neighbouring areas to prevent inadvertent contact with live parts (e.g. feeder cables);
The procedure for removing earthing is the same, only in reverse order.
- bottom position for top shutter;
- bottom position for cable area;
- top position for busbar area;
- can be replaced with ball handles.
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