12 Description of operation of the power sources and technical dates
4.4 Cooling unit WU21
It is optional and permits liquid cooling of the TIG torch. There
is one single electrical connection between WU21 and Genesis
302/382 AC/DC and once assembled, they form one single
body.
*All WU21 replacement, repair or connection ope-
rations must be performed by expert personnel
instructed by SELCO.
* Filling or topping up of the tank with cooling liquid
must be performed with the power source and
WU21 assembled and positioned on a horizontal
surface.
*Filling or topping up of the tank must be performed
with Selco cooling liquid, code 18.91.001.
*In order not to damage the cooling unit, always fit
the by-pass pipe when the torch is not connected to
the cooling liquid inlet/outlet terminals.
4.5 Remote controls
4.5.1 RC16 potentiometer remote control for MMA and TIG
welding.
This device allows you to vary, by
remote control, the amount of cur-
rent necessary without interrupting
the welding process or abandoning
the work area. 5, 10 and 20 m con-
nection cables are available.
4.5.2 RC12 pedal remote control for TIG welding.
Once the power source has been
switched to the EXTERNAL CON-
TROL mode, the output current is
varied from a minimum to a maxi-
mum value (can be entered from
SETUP) by varying the angle bet-
ween the pedal surface (where the
foot rests) and base. A microswitch
provides the weld start signal at
minimum pressure.
RATING PLATE
4.6 Technical specifications
G 302 AC/DC G 382 AC/DC
Power supply voltage
(50/60Hz) 3x400V ± 15% 3x400V ± 15%
Maximum power absorbed
in TIG 9.7kW (x= 40%) 13kW (x= 35%)
Maximum current absorbed
in TIG 16 A (x= 40%) 21.5 A (x= 35%)
Current absorbed
in TIG (x= 100%) 9 A 13 A
Maximum power absorbed
in MMA 11.8kW (x= 40%) 15kW (x= 35%)
Maximum current absorbed
in MMA 17 A (x= 40%) 22.8 A (x= 35%)
Current absorbed
in MMA (x= 100%) 11 A 16 A
Power factor 0.95 0.95
Cos
ϕ 0.99 0.99
Welding current in TIG
(x= 40%) 300 A 380 A
(x= 60%) 250 A 320 A
(x= 100%) 220 A 280 A
Welding current in MMA
(x= 35%) 300 A 350 A
(x= 60%) 250 A 320 A
(x= 100%) 220 A 280 A
TIG (MMA)
Adjustment range 6-300 6-380 (350 A)
Loadless voltage 80 V 80 V
Protection rating IP23C IP23C
Insulation class H H
Construction standards EN60974-1 EN60974-1
EN50199 EN50199
Dimensions (lxdxh) 275x620x500 mm 275x620x500 mm
Weight 33 Kg. 33 Kg.
Data at 40°C ambient temperature
WU21
Power supply voltage (50/60 Hz) 1x400 V ± 15%
Rated current absorbed 0.8 A
Tank capacity 6 l
Cooling power 2000 W
Protection rating IP23C
Dimensions (lxdxh) 250x655x280 mm
Weight with liquid 16 Kg.
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