LONCIN W190, Руководство пользователя

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Always make a sample weld on a piece of scrap material to be sure
you have chosen the correct electrode and current setting.
5
）
Welding Cable Selection
The table below shows the current carrying capacity of various lengths and gauges of
standard copper welding cable. Whenever possible, refer to the cable manufacturer
’
s
recommendations.
Always allow a considerable safety margin when selecting welding cables. The cable
’
s
length and gauge (diameter), along with the material it is made from, all combine to
determine how much current it can safely carry.
An undersize welding cable will offer unacceptably high resistance to
current flow. This high resistance will shorten the service life of the generator/welder,
and can even make the welding cables become hot enough to cause painful burns.
LENGTH IN FEET*
0
-
50FT. 50
-
100FT. 100
-
250FT.
CABLE
DIA.
CURRENT CAPACITY AMPERES
1 .664 250 200 170
2 .604 200 195
—
NOTE: The cable lengths given in the table above are the combined lengths of the
negative and positive cables.
6
）
Welding Duty Cycle
The duty cycle is the percentage of time that the welder can be operated in a given 10
minute period.
For example, at a rated output of 140 amperes, the LCW190/LCW190D/LCW190DR
’
s
duty cycle is 50%. This means that at 140 amperes, welding can be performed for a
total of 5 minutes out of every 10 minute period. The duty cycle is longer at lower
operating currents, and shorter at higher currents.
Current
190A 160A 140A 120A Below 100A
Rate 15% 25% 50% 65% 100%
Do not operate the welder beyond its duty cycle; doing so will
decrease the performances and service life of the generator/welder.