Delta Delta transformer

[The electron man]

So I was wondering if you had a delta delta transformer and one of the phase hit ground how would the current return to the source to trip the ocpd since you have no neutral ??

 

[LarryFine]

So I was wondering if you had a delta delta transformer and one of the phase hit ground how would the current return to the source to trip the ocpd since you have no neutral ??

Thus the need for a grounded secondary point (neutral or corner) or ground-fault detection.

 

[ptonsparky]

It waited for the second to hit it.

 

[LarryFine]

It waited for the second to hit it.

Translation, if I may:

With an ungrounded system, the first unintentional ground fault would effectively make the system behave as an intentionally-grounded system, but with uncertain voltages.

Undetected, the system would likely continue to function until another ground fault occurred on a different system conductor, in which case OCPD should function as intended.

 

[ptonsparky]

Translation, if I may:

With an ungrounded system, the first unintentional ground fault would effectively make the system behave as an intentionally-grounded system, but with uncertain voltages.

Undetected, the system would likely continue to function until another ground fault occurred on a different system conductor, in which case OCPD should function as intended.

Thank you.

I intended to get back, but MDSW is higher on the list.

 

[LarryFine]

I intended to get back, but MDSW is higher on the list.

As she should be.