This part of IEC 60999 applies to screw-type and screwless-type
clamping units for connecting devices, either as separate entities
or as integral parts of equipment, for the connection of electrical
copper conductors (complying with IEC 60228), rigid (solid or
stranded) and/or flexible, having a cross-sectional area of 0,2 mm²
up to and including 35 mm² and equivalent AWG sizes with a rated
voltage not exceeding 1 000 V a.c. with a frequency up to and
including 1 000 Hz, and 1 500 V d.c.
It applies to clamping units primarily suitable for connecting
unprepared conductors.
This standard does not apply to clamping units
a) for connection by crimping or soldering;
b) for data and signalling circuits;
c) for flat quick-connect terminations, insulation-piercing
connecting devices and twist-on connecting devices, which are
covered by IEC 61210 [3]1), IEC 60998-2-3 [1] and IEC
60998-2-4 [2] respectively.
1) Figures in square brackets refer to the
bibliography.