What is Low Power Factor Wattmeter?

As the name suggests the low power factor meter are the instruments that measures lower values of power factor accurately. Before we study more about the low power factor meter, it is very essential to know why there is a requirement of low power factor meter though we use ordinary electrodynamometer to measure power factor? … Read more

Electrodynamometer Type Wattmeter

Before we study the internal construction of electrodynamometer type wattmeter, it is essential to know the working principle of electrodynamometer type wattmeter. Dynamometer type wattmeter works on very simple principle and this principle can be stated as when any current carrying conductor is placed inside a magnetic field, it experiences a mechanical force and due … Read more

Measurement of Three Phase Power

Various methods are used for measurement of three phase power in three phase circuits on the basis of number of wattmeters used. We have three methods to discuss: Three wattmeters method Two wattmeters method Single wattmeter method. Let us discuss one by one each method in detail. Measurement of Three Phase Power by Three Wattmeters … Read more