Daihen OTC WB-P400, Owner'S Manual

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Chapter 3
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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.
3.1.1.1 Use of the engine generator and auxiliary power
• 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
Three phase Single phase
Welding power source
equipment
Supply voltage 208/230/460 V ± 10%
Installed capacity 21 kVA or more 14 kVA or more
Protective device
Switch with fuse
Switch capacity
70 A for 208/230 V, 50 A for
460 V or more
70 A for 208/230 V, 30 A for
460 V or more
Fuse
70 A for 208/230 V, 50 A for
460 V
70 A for 208/230 V, 30 A for
460 V
No-fuse breaker
(or leakage breaker) (*1)
75 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.