Operation Of The Switchgear; Commissioning; Preparatory Work - ABB UniGear ZS1 Instruction Manual

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6. Operation of the switchgear

Figure 108:

Withdrawable part with VD4 type high current circuit- breaker - pole side

13.9

Transport caps (to be removed on commissioning)

13.13 Lifting eyebolt (to be removed on commissioning)

Note on safety at work

The relative work and operating procedures must be carried out carefully by trained

specialists familiar with the installation, taking into account all the relative safety

regulations according to the IEC and other relevant professional bodies, as well as any

local and work regulations and instructions.

Warning

Do not walk on the top surfaces of the switchgear panels (rupture points for pressure

relief).

The pressure relief devices could be damaged!

6.1.1 Preparatory wok

In preparation for commissioning, the following work must be carried out prior to connection with the

high voltage power supply:

• Check the general condition of the switchgear for any damage or defects;

• Visually inspect the switching devices, withdrawable parts, isolating contacts, insulating parts, etc.;

• Check connection of the main earthing bar to the installation earthing conductor (following the

appropriate safety regulations);

• Check the paintwork for damage and, where necessary, touch up as described in section 7.4;

• Remove all residues of materials, foreign bodies and tools from the switchgear;

• Clean the switchgear, rubbing down insulating parts with a soft, dry, clean, non-fraying cloth.

Remove any greasy or sticky dirt as described in section 7.3;

• Correctly remount all covers etc. removed during assembly and testing procedures;

• Transport caps 13.9 (figure 108) on vacuum circuit-breakers - if still fitted - must be removed;

• Pole tube lids 13.10 on vacuum circuit-breakers may be fitted in certain systems and on certain

circuit- breakers. Check that they are fitted correctly;

• Lifting eyebolts 13.13 on high current vacuum circuit-breakers must be removed if still fitted;

13.9

13.13

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