Mark, that is a very good question. We have used various high voltage applications as well as different kva transformer ratings. But we the secondary voltages have always been 120/240-volts this is due to the harmonic build up between the primary and secondary coils that cause these voltages. Keep in mind they can drop 10-20% based on our studies. We need to try this with a 240/480-volt secondary and see if the results are the same. Again great question Mark.
@@threephaseinnovations7546ave you ever ran across a 240/480V 4 wire delta? I've heard of them but never came across one since they are extremely uncommon. I've seen 120V/240V 4 wire open deltas in rural settings where a farmer needs some 3 phase power for motor loads, but the majority of the loads are 120/240 single phase.
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Are the test voltages of 40(wye-delta) and 10(delta-delta) based on a specific secondary rating of the transformer? Or will it always be 40 and 10?
Mark, that is a very good question. We have used various high voltage applications as well as different kva transformer ratings. But we the secondary voltages have always been 120/240-volts this is due to the harmonic build up between the primary and secondary coils that cause these voltages. Keep in mind they can drop 10-20% based on our studies. We need to try this with a 240/480-volt secondary and see if the results are the same. Again great question Mark.
@@threephaseinnovations7546ave you ever ran across a 240/480V 4 wire delta? I've heard of them but never came across one since they are extremely uncommon. I've seen 120V/240V 4 wire open deltas in rural settings where a farmer needs some 3 phase power for motor loads, but the majority of the loads are 120/240 single phase.