Kemppi KMS 400 MVU [10/16] Fastmig kms 400 mvu kemppi oy 1042

Remove the machine’s right side plate to enable the mounting of a mains cable.

KMS 400 MVU power source can be connected to the mains supply of 230 V 3~ or 400 V 3~ .

If changing the mains cable take into consideration the following:

The cable is entered into the machine through the inlet ring on the rear panel of the machine

and fastened with a cable clamp (05). The phase conductors of the cable are coupled to

connectors L1, L2 and L3. The earth protection coloured green-yellow is coupled to connector.

NOTE! If you are using 5-lead cable, do not connect neutral conductor.

Sizes of the mains cables and fuse ratings for the machine at 100 % duty cycle are specied in

the table below:

Rated voltage Fuses, slow-blow Connection cable *) mm²

400 V 3~ 35 A H07RN-F 4G10 (10 mm²)

230 V 3~ 50 A H07RN-F 4G10 (10 mm²)

*) In cables of S type there is a protective grounding conductor coloured green-yellow.

WELDING AND EARTH CABLES3.4

Recommended copper cables with cross-sectional area are as follows:

FastMig KMS 400 MVU 70 ... 90 mm²

In enclosed table are shown typical load capacities of rubber insulated copper cables, when

ambient temperature is 25º C and lead temperature is 85º C.

Cable Duty cycle ED Voltage loss / 10 m

100 % 60 % 30 %

50 mm² 285 A 370 A 520 A 0,35 V / 100 A

70 mm² 355 A 460 A 650 A 0,25 V / 100 A

95 mm² 430 A 560 A 790 A 0,18 V / 100 A

Do not overload welding cables due to voltage losses and heating.

Fasten the earth clamp of the return current cable carefully, preferably direct onto the piece to

be welded. The contact surface of the earth clamp should always be as large as possible.

Clean the fastening surface from paint and rust.