KEMPOWELD 3200, 3200W / 0543 – 7
© KEMPPI OY
Change of mains voltage
Connection 3~ 230 or 3~ 400 V of mains voltage
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.
2.3. 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.
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.
2.4. OPERATION AND USE OF CONTROLS
See the page for Kempoweld PANELS and COOLING UNIT.
2.4.1. Main switch (S1)
In zero position all control and welding current circuits of the equipment are dead (without voltage). In position
I the control circuits of the machine become live (get voltage). The primary and welding circuits are dead, if the
welding mode has not been started with the gun trigger.
Always switch on and switch off the machine from the main switch. Never use the mains plug for
switching on or switching off the units and equipment!
2.4.2. Adjustment of welding voltage,
Table of adjustments, switch positions:
The welding voltage is adjusted with two turn switches.
The S2 is the 4-step switch for coarse control, where
voltage value of each step can be fine-adjusted with the
10-step switch S3.
2.4.3. Pilot lamps
Pilot lamps of the machine report about electric function:
The green pilot lamp H1 indicating that the machine is ready for operation is always lit, when the machine is
connected to mains voltage and the main switch is on position I.
The yellow pilot lamp H2 is lit, when thermal protection of the welding circuit has released due to overheating.
The protection releases if the power source is continuously loaded over rated values or the cooling air circulation
has been obstructed.
The cooling fan is cooling down the machine and after the pilot lamp has switched off, the machine is again ready
for welding from the gun trigger.
2.4.4. Control fuse (F1)
On the rear plate of the power source the fuse (F1) 8 A delayed is the short-circuit protection. Use the fuse size
and type according to markings. Damage caused by a wrong type fuse is not covered by the guarantee. If the fuse
is blowing again, send the unit to service.
cable cross-section duty cycle ED
voltage loss / 10 m
Cu
100 %
60 %
40 %
for 100 A
50 mm²
285 A
370 A
450 A
0.35 V
coarse control fine control
open circuit voltage
1 / 4
1 / 10 - 10 / 10 15.5 - 18.2 V
2 / 4
1 / 10 - 10 / 10 18.6 - 22.5 V
3 / 4
1 / 10 - 10 / 10 23.1 - 29.3 V
4 / 4
1 / 10 - 10 / 10 30.4 - 41.6 V
