Low-voltage switchgear and controlgear - Ancillary equipment. Terminal blocks for aluminium conductors
Low-voltage switchgear and controlgear - Ancillary equipment. Terminal blocks for aluminium conductors
1 Scope This Part of IEC 60947 specifies requirements for terminal blocks with screw-type or screwless-type clamping units primarily intended for industrial or similar use and to be fixed to a support to provide electrical and mechanical connection. This document can be used for terminal blocks for connection between aluminium conductors or aluminium to copper conductors. It applies to terminal blocks intended to connect round conductors, with or without special preparation, having a cross-section between 2,5 mm 2 and 300 mm 2 (AWG 12 to 600 kcmil), intended to be used in circuits of a rated voltage not exceeding 1 000 V AC (up to 1 000 Hz) or 1 500 V DC. This document can be used as a guide to qualify terminal blocks for conductors out of aluminium not complying with IEC 60228 (e.g. smaller than 10 mm 2 , flexible or other materials). This document can also be used as a guide to qualify other types of terminal blocks for conductors out of aluminium other than feed through terminal blocks (e.g. partially insulated terminal blocks).
NOTE 1 AWG is the abbreviation of “American Wire Gage” (Gage (US) = Gauge (UK)). kcmil = 1 000 cmil; 1 cmil = 1 circular mil = surface of a circle having a diameter of 1 mil; 1 mil = 1/1 000 inch.
This document does not apply to clamping units:
– dedicated to any other types of switchgear and controlgear; ...
Упомянутые в описании и другие стандарты PD