TEL TAVRIDA ELECTRIC VCB15 LD, Руководство пользователя

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For personnel protection the metal housing of the ISM must be connected according to the applicable regulations,
such as IEC 62271-1, IEC 62271-100, IEC 62271-200 via the marked earth screw of the ISM to the earthing
arrangement of the particular panel. The earthing connection can be carried out with a cable or a flat copper bar.
The area around the earth screw shall be cleaned before providing the earth connection. After the occurrence of a
short circuit, the proper condition of the protective earthing must be checked.
4.1.8 Protective earthing
Fault current (1 s) Maximum temperature Cross section of earth connection
16 kA 300 °C 55-95 mm²
20 kA 300 °C 70-120 mm²
25 kA 300 °C 95-140 mm²
31.5 kA 300 °C 120-190 mm²
30Nm
Table 7 - Reference values for cross sections of earth connections (copper)
Figure 65
ISM protective earthing connection
Figure 62
Adjust the indicator for both closed and ope-
ned states of the switching module.
Figure 63
Position indicator shows
that main contacts are open
Figure 64
Position indicator shows
that main contacts are closed
Washer
Lock washer
Bolt M12x25