Reply To: New Phase Angle Meter coming soon!
It has been the last test before you leave. Yes – you are “certain” that the CTs and PTs are connected because you have individually tested ratio and polarity and you have used secondary injection or other means to test the secondary wiring. So this is a final overlapping proof. Yes modern relays have metering but this is an independent test that does not rely on the relay metering.
It is true that it is most useful in the case of old electro mechanical relays but there are places in the world where those still exist. Another point is that I am developing the meter concept as an upgrade to my CT test set so I have another purpose. And lots of people, like Megger, Arbiter, Dranetz et al still sell this kind of meter.
Also there are cases where something tripped or a KWH meter is not reading correctly and you want to test the applied voltage and current.
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