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H Ü R N E R S c h w e i s s t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Germany
2.9
Power Supply Specifications
2.9.1
Mains Power Supply
Utility suppliers' wiring requirements, occupational safety
rules, applicable standards, and national codes have to be
respected.
When using power distributions on the worksite,
rules for the installation of earth-leakage circuit
breakers (RCD) have to be respected, and operation
Caution
requires an installed breaker.
Generator or mains power fuse protection should be 16 A
(slow blow). The product has to be protected against rain
and humidity.
2.9.2
Generator Power Supply
The required nominal generator capacity as determined by
the power supply requirement of the largest fitting to be
welded depends on the power supply specifications, the en-
vironment conditions, and the generator type itself includ-
ing its control/regulation characteristics.
Nominal output power of a generator 1-phase, 220 - 240 V,
50/60 Hz:
d 20 .....d 160
d 160 ....d 450
Start the generator first, then connect the welding unit. The
idle voltage should be set to approx. 240 volts. When turn-
ing the generator off, disconnect the welding unit first.
The working output power of the generator de-
creases by about 10% per 1,000 m of altitude. Dur-
ing the welding process no other device connected
Important
to the same generator should be operated.
3
Service and Repair
3.1
General
As the product is used in applications that are sensitive to
safety considerations, having it serviced and repaired only
by trained, specialized staff is highly recommended. Thus,
constantly high standards of operation quality and safety
are maintained. Feel free to request information on our
authorized service partner in your area at the address in
Sect. 13.
Version September 2022
3.2kW
4 kW mechanically regulated
5 kW electronically regulated
HÜRNER HCU 300 User's Manual
7
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