IEC 60999-1:1999 pdf download – Connecting devices – Electrical copper conductors – Safety requirements for screw-type and screwless-type clamping units – Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm2 up to 35 mm2 (included).
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) and1or 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 ac. with a lrequency 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 13111. IEC 60998-2•3 (1J and IEC 60998-2-4 (2) respectively
2 Normative references
The following normative documents contain provisions which, through reterence In this text. constitute provisions 01 this part of IEC 60999. For dated references, subsequent amendments 10, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of lEG 60999 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document relerred to applies. Members of lEG and ISO maintain registers of currently valid International Standards
lEG 60228:1978, Conductors of insulated cables
IEC 60228A:1982, Conductors of insulated cables — First supplement
lEG 60344:1980, Guide to the calculation of resistance of plain and coated copper conductors of tow-frequency cables and wires
lEG 61545:1996, Connecting devices — Devices for the connection of aluminium conductors in clamping units of any material and copper conductors in aluminium bodied clamping units
ISODIS 1456:—, Metallic coatings — Electrodeposiled coatings of nickel plus chromium and of
copper plus nickel plus chromium 21
ISO 2081:1986, Metallic coatings — Electroplated coatings of zinc on iron or steel
ISO 2093:1986, Electroplated coatings of tin — Specification and test methods
3 DefInitions
For the purpose of this part of IEC 60999. the following definitions apply.
3.1
clamping unit
the part(s) of the terminal necessary for the mechanical clamping and the electrical connection of the conductor(s), including the parts which are necessary to ensure the correct contact pressure
terminal
the conductive part of one pole, composed of one or more clamping unit(s) and insulation it necessary
3.3
connecting device
a device for the electrical connection of one (or more) conductor(s), comprising one (or more)
terminal(s), either fixed to a base or forming an integral part of the equipment
3.4
screw•type clamping unit
a clamping unit for the connection and subsequent disconnection of one conductor or the
Interconnection and subsequent disconnection of two or more conductors, the connection being
made, directly or indirectly, by means of screws or nuts of any kind
3.5
pillar clamping unit
a screw-type clamping unit in which the conductor is inserted into a hole or cavity, where it is clamped under the shank of a screw or screws. The clamping pressure may be applied directly by the shank of the screw or through an intermediate part to which pressure is applied by the shank of the screw
3.6
screw clamping unit
a screw-type clamping unit In which the conductor is clamped under the head of a screw The
clamping pressure may be applied directly by the head of the screw or through an intermediate
part such as a washer, clamping plate or antispread device.
IEC 60999-1:1999 pdf download – Connecting devices – Electrical copper conductors – Safety requirements for screw-type and screwless-type clamping units – Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm2 up to 35 mm2 (included)
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