Weiro ARC-400 - Power Source Connections; Power Supply Requirements

ARC-E 400
9
1.3 Power Source Connections
Warning
Thermal Arc advises that this equipment be electrically connected by a qualified electrician.
ELECTRIC SHOCK can kill; SIGNIFICANT DC VOLTAGE is present after removal of
input power.
DO NOT TOUCH live electrical parts.
 SHUT DOWN welding power source, disconnect input power employing lockout/tagging
procedures.
 Lockout/tagging procedures consist of padlocking line disconnect switch in open position.
 Removing fuses from fuse box, or shutting off and red-tagging circuit breaker or other
disconnecting device.
1.4．Power Supply Requirements
 Input volt must be standard sine wave, effective value 380V, 50Hz.
 Unbalance degree of 3- phase volt must be no more than 5%.
 Power supply:
Product model
ARC315E
ARC400E
ARC500E
Power supply
3 phase AC 380V
Min. power capacity
21KVA
28KVA
38KVA
Input protection
Fuse
40A
50A
63A
Breaker
63A
63A
100A
Min. Cable size
Input side
2.5mm
2
2.5mm
2
4mm
2
Output side
35mm
2
50mm
2
70mm
2
Earth lead
2.5mm
2
2.5mm
2
4mm
2
Table 4: Power supply connection
Note: The size of fuse and breaker in the table are for reference only.