raithrovers1
Industrial
- Feb 10, 2009
- 85
I have an engineer that has come back from a site with the waveforms from a 50KVA UPS that were captured on his scope. The phase to phase waveform is sinusoidal without a great deal of distortion. The unit did not seem to be loaded anywhere near the system capabilities but the engineer did not check the crest factor of the load.
However, the phase to neutral waveform is almost triangular in shape on all three phases. Any ideas why the phase to phase voltage is OK but the phase to neutral waveform is so distorted?
UPS Service Manager
However, the phase to neutral waveform is almost triangular in shape on all three phases. Any ideas why the phase to phase voltage is OK but the phase to neutral waveform is so distorted?
UPS Service Manager
