3-1
Chapt
er 3
Transpor
tation and Installation
Chapter 3 Transportation and
Installation
This chapter explains the necessary equipment, installation environment and transportation method for
installing the welding power source.
3.1 Required Equipment
This section explains the necessary power supply equipment for installing the welding power source and
equipment for preventing lack of oxygen and dust hazard during welding.
3.1.1
Welding power source equipment
For installing the welding power source, power source equipment and protective device that meet the
following ratings are required.
3.1.1.1
Use of the engine generator and auxiliary power
When using an engine generator for the welding power source, pay attention to the following.
•
Set the output voltage of the engine generator to the voltage range between 400 and 460 V at no-load
welding operation.
Setting to an extremely high output voltage may result in damage to the welding power source.
• When the welding power source is used in a humid environment such as construction
site, or location with highly conducting material such as steel plate or on steel structure,
install a leakage breaker.
Otherwise, electric shock due to leakage of electricity may occur.
• Be sure to install a switch with fuse or a circuit breaker (for motor) to the input side of
each welding power source.
Otherwise, electric shock and fire due to overcurrent or damage to the welding power
source may occur.
Equipment
Rating
Welding power source
equipment
Supply voltage
400 V ± 15 % (three phases)
Installed capacity
25 kVA or more
Protective device
Switch with fuse
Switch capacity: 50 A or more
Fuse: 50 A
No-fuse breaker
(or leakage breaker) (*1)
50 A
*1: High sensitivity type leakage breaker is recommended for installing a leakage breaker. (Consult the breaker
manufacturer for details)
• To prevent the welding power source from being damaged or arc loss, follow the
instructions below.
