Temperature Rise Test on 2000 Amps Bridge Rectifier

Test Results To Prove 2000 Amps Output capability

The photo of the 2000 Amps Bridge Assembly is shown Figure 1:

Figure 1

Tests were performed on Figure 1 per set up of Figure 2:

Figure 2

Test results are shown below:

1. Primary Input: 149 VAC, 28 Amps, 3 PH, 60 Hz approximately 
2. Input power: 149 x 28 x 1.732 = 7225 VA 
3. Secondary output: 2.56 VAC L-L, 800 Amps approximately 
4. Transformer output power = 2.56 x 800 x 3 = 6144 VA approximately 
5. DC output: 100 mV (2000 Amps) 
6. Test was run for 15 minutes 
7. Worst case heat sink temperature measured: 138°F 
8. Worst case hockey puck temperature measured: 168°F 
9. Fan 1 and fan 2 are ON during the test. 

Conclusion:

1. Hockey pucks are 2000 amp capability. 
2. Hockey pucks are functional up to 80°C or 176°Foperating temperature. 
3. The test proves that Figure 1 is good for 2000 Amps capability. 
4. To increase the capability to 2500 Amps, forced cooling as shown in Figure 3 is recommended. Fan 1 and Fan 2 are parts of the 2000 Amps Bridge Assembly. Fan 3 and Fan 4 are additional fans installed on the enclosure to exhaust air flow. 

Figure 3