The connections of three-phase energy metre for measuring three-phase power, three wire energy is similar to the connections of _______.

The connections of a three-phase energy meter for measuring three-phase power, three wire energy is similar to the connections of a two wattmeter for power measurement

Two Wattmeter Method of Power Measurement

The total power measured by the wattmeter method is:

\(W_T=W_1+W_2=\sqrt{3}V_LI_L\space cos\phi={3}V_PI_P\space cos\phi\)

Energy meter for Energy Measurement

The energy measured by an energy meter is:

\(E=P\times t\)

\(E=(V\times I)\times t\)

Similarities Between the Connections:

• Both the three-phase energy meter and the two-wattmeter method are typically used in a three-phase, three-wire system where there is no neutral wire.
• Both methods rely on two current coils to measure power in a three-phase, three-wire system.
• Both methods use voltage coils to measure the line-to-line voltage between phases.
• Both methods sum the power of two phases to calculate the total power in the system.