No.P10224
P. 13/ 47
6. NECESSARY POWER SOURCE EQUIPMENT
6.1 Power source utility (for commercial power source)
WARNING
●
When the welding machine is used in such a humid environment as construction site, on the
steel plate, or on steel structure, install a leakage breaker.
CAUTION
●
Be sure to install a switch with fuse or a circuit breaker (for motor) at input side of welding
machine.
●
Capacity of necessary power source utility
CPDACA-200
Power supply voltage and phase
460V, Three phases
Tolerance of fluctuation of power supply voltage
460V
Installed capacity
21kVA or more
Capacity of switch/circuit breaker
40 A
6.2 Precautions against the use of engine generator
CAUTION
●
To prevent damage to engine generator or auxiliary power, follow the instructions below.
●
Set the engine generator to within the voltage range between 460 and 483V. Setting to excessive
high output voltage may result in product damage.
●
Use the engine generator with a damper winding of which capacity is more than twice as much as
the rated input of the machine. Generally, the recovery time of the engine generator’s voltage for
load change is slower than that of the commercial input power source, and if the engine generator
does not have sufficient capacity, sudden current change such as arc start may occur. This may
result in abnormal decrease in output current or arc loss. Ask a manufacturer of engine generator
for a damper winding.
●
Do not combine more than two welding machines with an engine generator. The effect of each
machine may cause easy loss of arc.
●
Use the auxiliary power source of engine welder whose waveform has been improved. Some
auxiliary power sources are poor at electricity conduction, which may lead to damage to the
welding machine. Contact a manufacturer of engine welder for the improvement of waveform.
