IEC 60998-2-1:2002 pdf download

IEC 60998-2-1:2002 pdf download.Connecting devices for low-voltage circuitsfor household and similar purposes – Part 2-1: articular requirements for connecting devices as separate entities with screw-typeclamping units.
8 Marking
This clause of Part 1 is applicable except as follows:
8.1 Addition:
The terminal shall be marked according to 10.103, if applicable.
Additional subclauses:
8.101 If the manufacturer declares that the performance of his devices exceeds the minimum requirements of subclauses 10.101 and 10.102 then he shall state in his data sheets or catalogue or on his packaging the types, the maximum and minimum cross-sectional area of conductors that can be connected and the maximum number of conductors that can be connected simultaneously to each clamping unit.
9 Protection against electric shock
This clause of Part I is applicable.
10 Connection of conductors
This clause of Part 1 is applicable except as follows:
Additional subclauses:
10.101 Terminals shall accept two or more conductors of the same or of different nominal cross-sectional areas or compositions. Terminals shall accept rigid and/or flexible unprepared conductors.
10.102 Each terminal shall accept conductors of cross-sectional areas and types as indicated in Table 101, for the relevant values of the rated connecting capacity Terminals shall provide, in addition, appropriate connection of at least the two successive smaller cross-sectional areas, for example,
a) a terminal having the rated connecting capacity of 1 mm2 shall clamp reliably a rigid and/or flexible conductor of 0,5 mm2, 0,75 mm2 and 1 mm2
b) a terminal having the rated connecting capacity of 10 mm2 shall clamp reliably rigid conductors of 4 mm2, 6 mm2 and 10 mm2 and/or flexible conductors of 4 mm2 and 6 mm2.
c) a terminal having the rated connecting capacity of 25 mm2 shall clamp reliably rigid conductors of 10 mm2, 16 mm2 and 25 mm2 and/or flexible conductors of 6 mm2, 10 mm2 and 16 mm2.
d) a terminal for flexible conductors only and having a rated connecting capacity of 25 mm2 shall clamp reliably flexible conductors of 10 mm2, 16 mm2 and 25 mm2.
10.103 Unless otherwise specified by the manufacturer, terminals shall accept rigid and flexible conductors indicated in the connectable conductors column of Table 101 corresponding to their rated connecting capacity; in this case no markings are necessary. If a terminal can accept only one type of conductor (for example. rigid or flexible) this shall either be clearly marked on the end product, for connecting purposes, by the letter or f” or indicated on the smallest package unit or in technical information and catalogues.
Compliance with the requirements of 10.101 to 10.103 is checked by inspection and by the following test.
The test is carried out on terminals with copper conductors in accordance with 10.102, the smallest and largest diameter conductors being placed in each clamping unit alternatively.
Screws and nuts are tightened and loosened 5 times by means of a suitable screwdriver or spanner, the tightening torque shall be in accordance with the appropriate column of Table 102 or alternatively in accordance with the higher torque value stated by the manufacturer.
A new conductor end is used each time the screw or nut is loosened.
The shape of the blade of the test screwdriver shall suit the head of the screw to be tested. The screws and nuts shall be tightened in one smooth and continuous application of the torque.
10.104 Three new clamping units are fitted with new conductors of number, cross-sectional area and type (flexible and/or rigid) specified by the manufacturer in the equipment shown in Figure 105.
The following tests shall be carried out using new samples for each of the following:
a) the minimum number of conductors of the smallest cross-sectional area:
b) the minimum number of conductors of the largest cross-sectional area;
if applicable,
C) the maximum number of conductors of the smallest cross-sectional area;
d) the maximum number of conductors of the largest cross-sectional area;
e) the maximum number of conductors of the smallest and largest cross-sectional area simultaneously connected to the clamping unit.
NOTE 1 The cross-sectional areas of the conductors specified in C), d) and e) may be different from the cross- sectional areas specified in a) and b).
NOTE 2 Where clamping units are incorporated within an equipment it is not necessary to provide the complete equipment for testing.
The length of the test conductor shall be 75 mm longer than the height H specified in Table 103. The test conductor is then connected in the clamping unit, the clamping screws or nuts being tightened with the torque according to 10.103.
The end of one conductor shall be passed through an appropriate sized bushing in a platen positioned at a height H below the equipment as given in Table 103. The bushing is to be positioned in a horizontal plane such that its centre line describes a circle of 75 mm diameter, concentric with the centre of the clamping unit. In the horizontal plane the platen is then rotated ala rate of (10± 2)r/min.
The distance between the mouth of the clamping unit and the upper surface of the bushing shall be within 15 mm of the height indicated in Table 103. The bushing may be lubricated to prevent binding, twisting or rotation of the insulated conductor.
A mass, as specified in Table 103, is suspended from the end of the conductor. The duration of the test shall be 15 mm.
During the test, the conductor shall neither slip out of the clamping unit nor break near the clamping unit, nor shall the conductor be damaged in such a way as to render it unfit for further use within the meaning of this standard.