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７
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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±10%, and frequency 50Hz.
Unbalance degree of 3- phase volt must be no more than 5%
Power supply
Product type
315
500
630
Power supply
3 phase AC380V
Min. capacity
Power network
14KVA
27KVA
45KVA
Input volt
protection
Fuse
20A
40A
60A
Circuit breaker
40A
60A
100A
Cable size
(cross-section)
Input volt
4mm
2
6mm
2
10mm
2
Output volt
35mm
2
50mm
2
70mm
2
Ground lead
4mm
2
6mm
2
10mm
2
Table 5: Power supply connection
Note: The sizes of fuse and breaker in the table are for reference only.
