Weiro WM250FI, Operation Manual

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
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 Supplier Requirements

Input volt must be standard sine wave, effective value 380V
±
10%, frequency
50Hz.

Unbalance degree of 3-phase volt must be no more than 5%.

Power supply:
Table 3: Power supply connection
Note: The size of fuse and breaker in the table are for reference only.
Model WM250FI WM350FI WM500FI
Power supply 3 phase AC 380V
Min. capacity
Power network 12KVA 26KVA 45KVA
Generator 16KVA 34KVA 60KVA
Input volt protection
Fuse 20A 30A 50A
Circuit breaker 20A 32A 63A
Cable size
(cross-section)
Input volt
≥1.5mm
2
≥2.5mm
2
≥4mm
2
Output volt 25mm
2
35mm
2
50mm
2
Ground lead
≥1.5mm
2
≥2.5mm
2
≥4mm
2