Welding And Return Current Cables - Kemppi 3200 Operating Manual

The cable is entered into the machine through the inlet ring on the rear wall of the machine
and locked 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 marked with earth protection
symbol
the cable´s protective shield.
sizes of mains cables and fuse ratings for the machine at 100% ed duty cycle are
specified in the table below:
Kempoweld 3200, 3200W
Connected voltage
Voltage range
Fuses, delayed
Connected cable
In cables of S type there is protective grounding conductor coloured green-yellow.
This equipment's electromagnetic compatibility (EMC) is designed for use in an industrial
NOTE!
environment. Class A equipment is not intended for use in residential location where the electrical
power is provided by the public low-voltage supply system.
Change of mains voltage
Connection 3~ 230 or 3~ 400 V of mains voltage
EN
By delivery from the factory the machine has been connected for mains voltage 3~ 400 V.
In order to change the mains voltage, remove the side plate of the machine. Change the
connections according to the enclosed diagram. You find the corresponding wiring diagram
on the instruction label, which is under terminal block.
2.4

Welding and return Current Cables

Use only copper cables with cross-sectional area of at least 50 mm². In enclosed table
are shown typical loading capacities of rubber insulated copper cables, when ambient
temperature is 25 °C and conductor temperature is 85 °C.
cable cross-section
Cu
50 mm²
Fasten the earthing press of the return current cable carefully, preferably direct onto the piece
to be welded. The contact surface area of the press should always be as large and steady as
possible.
Do not overload welding cables over permissible values due to voltage losses and heating.
Clean the contact surface from paint and rust.
8
. If you are using 5-conductor cable, you must cut the zero conductor to the level of
230 V
220 – 240 V
20 A
4 x 2.5 S mm²
duty cycle ED
100 %
285 A
400 V
380 – 415 V
16 A
4 x 2.5 S mm²
voltage loss / 10 m
60 % 40 % for 100 A
370 A 450 A 0.35 V