EN
9
2.4 Cable connections
Connection to mains
The machine is equipped with a 3.3 m supply voltage cable and plug. Plug
the mains cable to a single-phase electric network.
The MinarcTig 250 is supplied with a 5 m mains cable without a plug.
NOTE!
Check the fuse size in Technical specications. The plug may
be installed only by electrical contractors and installers specialised in
performing such operations.
If you use an extension power supply cord, its cross sectional area should
be at least as large as the supply voltage cable tted to the machine. The
maximum length for the extension cable is 50 m.
The minimum power of a single-phase machine generator must be 3.5 kVA.
The recommended power is 7.0 kVA for using the machine at maximum
power.
Restrictions on generator type and power may apply in generator use. Fault-
free operation of a three-phase machine also requires a suciently high-
power generator. The power recommendation is more than 15 kVA.
Earthing cable
Connect the earthing cable to the negative pole in MMA welding, and to the
positive pole in TIG welding.
Before you start welding, clean the work piece surface and x the earth
return clamp to the work piece in order to create a closed and interference
free welding circuit.
Welding torch (TIG)
The welding torch is used to supply shielding gas and electrical arc energy
to the weld piece. When you press the welding torch switch, the shielding
gas begins to ow and the arc is established. The TIG torch is connected to
the negative pole.
9© Kemppi Oy / 1339
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