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Background General Multilin M60 is a motor protection relay. It also provides information on motor energy consumption and trouble shooting. Motor phasor diagram is a quick way to verify M60 wiring. If M60’s potential transformer (PT) and current transformers are Wye-Wye connection, voltage phasor diagram can be viewed as phase to ground voltage or phase […] Background General Electric’s EPM7000 power quality meter is used to monitor power consumption and power quality. EPM7000 generates phasor diagram. If the wiring between the line and meter is standard Wye-Wye, Delta-Delta or Delta – Wye connection, the phasor diagram is easy to read. However, the phasor diagram is very confusing on 2CT, Delta connection. […] Description There is no phase angle shift in Delta – Delta or Wye-Wye transformer. However, there is 30 degree phase angle shift in Delta-Wye transformer. Many articles take that as a fact without any explanation. Articles also state that high voltage side leads the low voltage side by 30 degree. That conclusion does not make […] |
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