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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.
•
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 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
WB-P402L
21 kVA or more
WB-P502L
25 kVA or more
Protective device
Switch with fuse
Switch capacity
WB-P402L
40 A or more
WB-P502L
50 A or more
Fuse
WB-P402L
30 A
WB-P502L
50 A
No-fuse breaker
(or leakage breaker) (*1)
WB-P402L
40 A
WB-P502L
50 A
*1: High sensitivity type leakage breaker is recommended for installing a leakage breaker. (Consult the breaker manufacturer for
details)
