ESAB LHI 425 Manual De Instrucciones página 19

2) DESCRIPTION
Three-phase power source for DC welding with electronic current adjustment. Sturdy, reliable, with
excellent arc characteristics and recommended for
applications with any electrod, they are suitable to be used in
construction.
LHI 425 Pipeweld ensure an extraordiary stability of the welding parameters and their "fast dynamic
characteristic" allows to obtain quality results also with the most difficult cellulosic and basic electrodes.
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Adjustable Arc Force
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Electrode Antisticking
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Automatic compensation for mains voltage fluctuations within ± 10%.
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Suitable for welding with any kind of electrode.
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Gouging facility with carbon electrodes, and TIG welding.
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" Stand-by " fan function on when demanded.
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Overcurrent protection.
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Protected electronic parts permit the equipment to be used in the most severe work conditions.
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ElectronicWelding Current Adjustment
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Digital A/V .
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Remote Control
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Truck system under solid rubber wheels (optional).
3) DUTY CICLE
Duty cicle is the proportion between the time that a welding machine can provide the maximum welding
current (load time) and a reference time; according to international standards, reference time is 10 minutes.
The 60% Nominal duty cicle means that a machine can repeatedly provide its nominal welding current
during periods of 6 min. (load) and is followed by a 4-minute rest (the machine does not provide welding
current) (6 + 4= 10 min.).This process is repeatedly done so that the temperature of its internal components
do not exceed the project stated limits.The same goes for any power factor value.
In LHI Rectifier the allowed
conversely, the allowed
Table 4.1 shows authorised loads for LHI Rectifier.
for choosing the best welding arc dynamic characteristic.
function.
with cable from 5 up to 50 m (optional).
duty cicle increases up to 100% as the used welding current decreases;
duty cicle decreases as the welding current increases up to its maximum range.
cellulosic electrodes
pipe welding
through easy-to-set calibrated.
and highest standard
, shipyards and steel
LHI 425 Pipeweld
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