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Norm:Application standards,for example,IEC60974,EN60974,etc.
U
：
Rated AC input voltage of the welding power source,for example,1~(1 phase),230V.
1
:
50 H
Rated frequency of single phase AC power supply .
Z
I
：
Max. input current
1max
I
Max. effective input current
：
1eff
X:
duty cycle.It is the ratio between the load duration time and the full cycle time.
Rated
Note1: This ratio is between 0~100%.
Note2: For this standard, one full cycle time is 10min.For example, if the rate is 40%, the loaded time shall be 4
minutes and rest time shall be 6 minutes.
Duty cycle is based on a ten minute period.This means that the arc may be drawn for two minutes out of
each ten minute period without any danger of overheating .If it is used more than two minutes during several
successive ten minutes periods, it may overheat.
U
Non-load voltage. It is the open-circuit output voltage of the welding power source.
：
0
I
：
output current or welding current
2
U
：
Output load voltage or welding voltage.The rated loaded output voltage U
2
A / V—A / V：
The adjustable range of current and its corresponding load voltage.
S1:
The rated Input Power, KVA
IP：
Protection grade . For example, IP21,approving the welding machine as suitable for use indoors; IP23,. approving
the welding machine as suitable for use outdoors in the rain.
S
Suitable for hazardous environments.
： Beyond rain.
F or H： Insulation grade.
1.4 THE MAIN TECHNICAL SPECIFICATIONS
Input voltage
Frequency
Output current
Output voltage
Wire Diameter
TECHNICAL INFORMATION
CT4973
230VAC±15%, 1 Phase
50Hz
DC 40~180A
DC 16.5~26.4V
0.6mm, 0.8mm, 0.9mm,1.0mm
=14+0.05I
2
-8-
2
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