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Geniune Kemppi Electrode Cable, 35mm 2 x 5m.
Answers on identifying, choosing and safely fitting internal and mechanical spares for an inverter welding power source.
Start with the rating plate on the machine. It normally shows the manufacturer, type designation, serial number and the electrical ratings, and this is usually the only reliable record on an older unit. Then use the maker's manual or parts list to find the part and its reference number.If the old part has a number or marking on it, note it, but do not rely on it alone, because the same part can be used in several versions. Photograph the part, the board or the connector before removing it, and quote the plate details when you ask for help.
Power sources of this type can hold stored electrical energy in capacitors for some time after they are switched off and unplugged. Isolating the machine from the mains is not enough on its own.The waiting time and the way of checking that the machine is safe depend on the design, so follow the maker's service instructions rather than a general rule of thumb. This kind of work should be done only by a competent person, since mistakes can cause fatal electric shock.
The transformer converts and isolates the electrical power inside the machine, and the choke smooths the current. They are heavy, electrically critical parts, and a failed one is usually a sign of an overheating, overload or cooling problem that should be traced first.They must be matched exactly to your machine type, and fitting them involves removing covers and working near high-voltage circuits. Leave this to a competent person, ideally the maker or an authorised service agent, as HSE guidance suggests for specialised equipment.
A PTC resistor is a component whose resistance rises with temperature. In power electronics it is often used to limit current or to sense heat, which helps protect other parts. Its exact job in a given machine is set by the design.Because its value and temperature rating decide when it acts, fit only the type listed in the parts list for your machine. A part with a different rating may not protect the circuit properly. Replacement involves opening the machine, so follow the competent-person and isolation advice.
