750 volt nominal, latheral???

[Toros]

I have facility in Palmdale to upgrade its service.

The system voltage measures 750 volt @ 3-phase.????????????????????????

Never heard and seen

Is it possible
Is it nema standard voltage rate in The America

 

[zbang]

The system voltage measures 750 volt @ 3-phase

Measured from where to where? Is that hot to hot? Hot to neutral? Is the system grounded? An ungrounded system can show weird voltages from anything to a real ground.

 

[Jraef]

Anything over 600V is considered Medium Voltage, so no Low Voltage rated equipment could be in use there, i.e. circuit breakers, fuses, motor controls, building wire, etc. etc.

Are you sure you don't have your "Peak" reading button held down?

750V peak would equate to about 530V RMS, which is still high, but much more believable.

 

[Toros]

Measured from where to where? Is that hot to hot? Hot to neutral? Is the system grounded? An ungrounded system can show weird voltages from anything to a real ground.

I do not know yet.

I will let you know

 

[Toros]

Anything over 600V is considered Medium Voltage, so no Low Voltage rated equipment could be in use there, i.e. circuit breakers, fuses, motor controls, building wire, etc. etc.

Are you sure you don't have your "Peak" reading button held down?

750V peak would equate to about 530V RMS, which is still high, but much more believable.

May be
I will investigate that, will re-check
thank you