L.V Testing
L.V Testing
(OP)
My question is this:
After finally pinning down the boss I've eventually convinced him we can have our equipment replaced!
We had a data logger record our equipment for one week (voltage, currents, KW, KVAr, KVA ect) and decided to use the data to compile a report to indicate the size required for install.
The question is about the current waveform results:
Do we use the maximum average RMS value (the peak amplitude value/true effective RMS) or the maximum max recorded value (the peak to peak RMS value) to size are equipment.
The equipment in question is our incoming breaker at the L.V switchboard.
I am as you can appreciate concerned about under sizing equipment due to fault or effectively over sizing and costing the company unnecessarily.
Many, many thanks in advance for your thoughts and suggestion on this!
After finally pinning down the boss I've eventually convinced him we can have our equipment replaced!
We had a data logger record our equipment for one week (voltage, currents, KW, KVAr, KVA ect) and decided to use the data to compile a report to indicate the size required for install.
The question is about the current waveform results:
Do we use the maximum average RMS value (the peak amplitude value/true effective RMS) or the maximum max recorded value (the peak to peak RMS value) to size are equipment.
The equipment in question is our incoming breaker at the L.V switchboard.
I am as you can appreciate concerned about under sizing equipment due to fault or effectively over sizing and costing the company unnecessarily.
Many, many thanks in advance for your thoughts and suggestion on this!






RE: L.V Testing
RE: L.V Testing
There is more to sizing equipment than you may suspect.
If you have to ask about RMS and peak to peak, you are probably not even aware of available fault current and short circuit withstand ratings.
How about PU impedance values of the supply transformer?
Hire an expert.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: L.V Testing