| TABLE 2: SEMICONDUCTOR REQUIREMENTS FOR THREE-PHASE STICK WELDERS |
| |
Max output current (AAVG) |
200 |
250 |
300 |
350 |
400 |
500 |
560 |
| |
Arc voltage (VAVG) |
28 |
30 |
32 |
34 |
36 |
40 |
42 |
| |
Total output power (kW) |
5.6 |
7.5 |
9.6 |
11.9 |
14.4 |
20 |
23.7 |
| U.S. welding equipment* |
| Switch stage |
Switch current at working temperature (AAVG) |
Full bridge type |
15 |
20 |
25 |
31 |
38 |
53 |
63 |
| Dual forward type |
30 |
40 |
51 |
63 |
76 |
105 |
125 |
| Input rectifier stage |
Current and voltage ratings |
40 A, 1200 V |
70 A, 1200 V |
100 A, 1200 V |
166 A, 1200 V |
| European welding equipment* |
| Switch stage |
Switch current at working temperature (AAVG) |
Full bridge type |
8 |
11 |
14 |
17 |
21 |
29 |
34 |
| Dual forward type |
16 |
22 |
28 |
34 |
42 |
58 |
69 |
| Input rectifier stage |
Current and voltage ratings |
40 A, 1600 V |
70 A, 1600 V |
100 A, 1600 V |
* In the U.S., the value of the three-phase ac input varies over a wide range. While for most of the country this value is 220 V, it may be as low as 208 V in California or as high as 480 V in some states. In Europe, the input varies from 380 to 400 V.
Source: International Rectifier |