BS EN IEC 60974-5:2019 pdf download.Arc welding equipment
3.3 liner
replaceable component that guides the fller wire[SOURCE: IEC 60050-851:2008, 851-14-35, modified一The LINER is replaceable and is not required to be in the cable-hose assembly.]
3.4 maximum load
maximum value of the force required to feed the specified types and sizes of fller wires over the RATED SPEED RANGE[SOURCE: IEC 60050-851:2008, 851-12-23, modified - Abbreviated wording and elimination of rated temperature condition.]
3.5 rated speed range
speed range of the fller wire assigned by the manufacturer for each specified size of filler wire[SOURCE: 1EC 60050-851:2008, 851-12-19, modified - The term "specified" is used instead of "rated".]
3.6 rated supply current
RMS value of an input current to the WIRE FEEDER at MAXIMUM LOAD
3.7 wire-feed control
electrical or mechanical apparatus, or both, which control(s) the speed of the fller wire, the sequence of operations and other services as required
Note 1 to entry: The wire feed control may be integral with the WIRE FEEDER or in a separate enclosure.[SOURCE: IEC 60050-851:2008, 851-14-40]
3.8 wire feeder
equipment that delivers filler wire to the arc or weld zone which includes means to apply motion to the filler wire
Note 1 to entry: The WIRE FEEDER may also include the WIRE-FEED CONTROL, the FILLER WiRE SUPPLY, devices for gas control, indicators and remote connectors.
10.1 General requirements
A stand-alone WIRE FEEDER which relies on motor-driven fan(s) for conformity with the tests of Clause 9 shall neither breakdown nor increase the risk of electric shock or fire, under the conditions of operation of 10.2. These tests are conducted without regard to temperature attained on any part, or to the continued proper functioning of the WIRE FEEDER. The only criterion is that the WIRE FEEDER does not become unsafe. These tests may be conducted on any WIRE FEEDER that functions correctly.
WIRE FEEDERS protected internally, for example, by a circuit-breaker or by thermal protection,meet the requirement for safe functioning if the protection device operates before an unsafe condition occurs.
Conformity shall be checked by the following tests:
a) A layer of dry absorbent surgical type cotton is placed under the WIRE FEEDER, extending beyond each side for a distance of 150 mm.
b) Starting from the cold state, the WIRE FEEDER is operated in accordance with 10.2.
c) During the test, the WIRE FEEDER shall not emit flames, molten metal or other materials that ignite the cotton indicator.
d) Following the test and not more than 5 min after the test, the WIRE FEEDER shall be capable of withstanding a dielectric test in accordance with IEC 60974-1:2017, 6.1.5 b).
10.2 Stalled fan test
A WIRE FEEDER that relies on motor-driven fan(s) for conformity with the tests of Clause 9, is operated at rated supply voltage for a period of 4 h while the fan motor(s) is(are) mechanically stalled and the WIRE FEEDER operated at the output condition of IEC 60974-1:2017, 7.1.
NOTE The intention of this test is to run the WIRE FEEDER with the fan stationary to check the safety of both the fan and the WIRE FEEDER.BS EN IEC 60974-5 pdf download.