# Three-phase power by two watt-meters method

Voltage V12
V
Current I2
A
Displacement Angle
°
Voltage V13
V
Current I3
A

The three-phase power system is a method of electrical power transmission in which three sinusoidal voltages of the same frequency are transmitted along three separate conductors.

This system is commonly used in power generation, transmission, and distribution. The three-phase system is more efficient and cost-effective than a single-phase system, as it allows for the use of smaller and less expensive equipment. One way to measure the power in a three-phase system is by using the two watt-meters method.

This method involves measuring the power in two of the three phases, and then using this information to calculate the power in the third phase. The method is based on the fact that the power in a three-phase system is equal to the sum of the power in the three individual phases. To use the two watt-meters method, a watt-meter is placed in each of the two phases that are being measured. The readings from these watt-meters are then used to calculate the power in the third phase.

This is done by subtracting the power in the two measured phases from the total power in the system. There are also online calculator available for this method which can be used to perform this calculation quickly and easily.

These calculators typically require the user to input the voltage and current readings from the two watt-meters, and then use this information to calculate the power in the third phase.

The two watt-meters method is a useful tool for measuring the power in a three-phase system, as it allows for the efficient and accurate measurement of power without the need for additional equipment. It is widely used in power generation, transmission, and distribution, and is an essential tool for ensuring the safe and efficient operation of electrical systems.

In conclusion, the three-phase power system is an efficient method of transmitting electrical power and the two watt-meters method is a simple and accurate way to measure the power in a three-phase system. With the help of online calculator, this calculation can be done easily and efficiently. This method is widely used in power generation, transmission and distribution to ensure safe and efficient operation of electrical systems.