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What is a Varmeter?

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Field: Industry News
Electrical Engineer
10Year<
China


What is a  Varmeter?


Varmeter Definition


A varmeter is defined as an instrument used to measure the reactive power in an electrical circuit.

 

Single Phase Varmeter


In single-phase varmeters, the pressure coil voltage leads the coil current by 90 degrees, and the reading represents the reactive power.


 

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Polyphase Varmeter


Polyphase varmeters use two auto-transformers in an open delta configuration to create a phase shift for measuring reactive power.


 

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Reactive Power Measurement


Reactive power is crucial to measure because high reactive power leads to a poor power factor and increased losses.


 

Harmonics Limitation


Single-phase varmeters may not measure reactive power accurately if harmonics are present in the circuit.



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