BS EN IEC 60974-5 pdf free download

BS EN IEC 60974-5-2019 pdf free download.Arc welding equipment Part 5: Wire feeders (IEC 60974-5:2019).
4 Environmental conditions
The environmental conditions are as specified in Clause 4 of IEC 60974-1 :201 7.
5 Tests
5.1 Test conditions
The test conditions are as specified in 5.1 of IEC 60974-1 :201 7.
5.2 Measuring instruments
The accuracy of measuring instruments shall be:
a) electrical measuring instruments: class 1 (±1 % of full-scale reading), except for the measurement of insulation resistance and dielectric strength where the accuracy of the measuring instruments is not specified, but shall be taken into account for the measurement;
b) thermometer: ±2 K;
c) tachometer: ±1 % of full-scale reading;
d) pressure measuring instruments: class 2,5 (±2,5 % of full-scale reading).
5.3 Conformity of components
The conformity of components is as specified in 5.3 of IEC 60974-1 :201 7/AMD1 :201 9.
5.4 Type tests
All type tests given below shall be carried out on the same WIRE FEEDER .
As a condition of conformity, the type tests given below shall be carried out in the following sequence:
a) visual inspection (as defined in 3.1 .7 of IEC 60974-1 :201 7);
b) insulation resistance (as specified in 6.1 .4 of IEC 60974-1 :201 7 (preliminary check));
c) enclosure (as specified in 1 4.2 of IEC 60974-1 :201 7);
d) handling means (as specified in 1 4.3 of IEC 60974-1 :201 7);
e) drop withstand (as specified in 1 4.4 of IEC 60974-1 :201 7);
f) protection provided by the enclosure (as specified in 6.2.1 );
g) insulation resistance (as specified in 6.1 .4 of IEC 60974-1 :201 7);
h) dielectric strength (as specified in 6.1 .5 of IEC 60974-1 :201 7);
i) visual inspection (as defined in 3.1 .7 of IEC 60974-1 :201 7).
The other tests included in this document and not listed here shall be carried out, but may be completed in any convenient sequence.
5.5 Routine tests
All routine tests given below shall be carried out on each WIRE FEEDER in the following sequence:
a) visual inspection in accordance with manufacturer’s specification;
b) continuity of the protective circuit, if applicable (as specified in 1 0.5.3 of IEC 60974-1 :201 7);
c) dielectric strength (as specified in 6.1.5 of IEC 60974-1 :201 7).
6 Protection against electric shock
6.1 Insulation
Subclause 6.1 of IEC 60974-1 :201 7 applies.
6.2 Protection against electric shock in normal service (direct contact)
6.2.1 Protection provided by the enclosure
W IRE FEEDERS shall have a minimum degree of protection in accordance with Table 1 using IEC 60529 test procedures and conditions.
W IRE FEEDERS with degree of protection IP23S may be stored but are not intended to be used outside during precipitation unless sheltered.
Adequate drainage shall be provided by the enclosure. Retained water shall not interfere with the correct operation of the equipment or impair safety. The quantity of water that may enter the enclosure during the following test is not limited.
Conformity shall be checked by the following test:
The filler wire shall be fed into the drive system and all external connectors shall be connected or covered.
The WIRE FEEDER shall be subjected to the appropriate water test without being energized.
Immediately after the test, the WIRE FEEDER shall be moved to a safe environment and subjected to the insulation resistance test, listed in 5.4 g) and to the dielectric strength test, listed in 5.4 h).
When live parts at welding potential are protected against precipitation, the filler wire shall show no visual wetness after the test.
6.2.2 Capacitors
Subclause 6.2.2 of IEC 60974-1 :201 7 applies.
6.2.3 Automatic discharge of supply circuit capacitors
Subclause 6.2.3 of IEC 60974-1 :201 7 applies.BS EN IEC 60974-5 pdf download.