MAWA-300B
1. Overview
1-9
(3) -3. Duty cycle graph
(Ambient temperature: 40°C)
* The duty cycle is the ratio (in percent) of load time for the total time.
Duty cycle X (%) = (weld time of the 1st w the 2nd welding T
weld
) / weld cycle T
cycle
× 100
In this product, a period of 10 minutes of the total time of “JIS C9300-1 3.37” is not adopted.
Also, the duty cycle changes depending on the set time of the 1st w the 2nd welding.
Example computation)
When weld time of the 1st w the 2nd welding T
weld
= 100 ms and weld cycle T
cycle
= 500 ms
Duty cycle X (%) = (weld time of the 1st w the 2nd welding T
weld
) / weld cycle T
cycle
× 100
= 100 ms / 500 ms × 100 = 20%
In this case, up to welding current 150 A is available according to the duty cycle graph.
Current
(A
)
Duty cycle (%)