Energy Meter with Lag Adjustment Devices

We know that in induction type energy meters, in order to maintain speed of rotation proportional to power “The phase angle between supply voltage and pressure coil flux should be equal to 90o“. However in actual practice, the angle between supply voltage and pressure coil flux is exactly not 90o but few degrees less. Therefore, … Read more

Watt Hour Meter

Watt-hour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. By implementing the Watt-hour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered device or a business. Electrical … Read more

Measurement of Electrical Energy

Electrical energy is the product of electrical power and time, and it is measured in joules. It is defined as “1 joule of energy is equal to 1 watt of power is consumed for 1 second’’. i.e. Energy and power are closely related. Electrical energy can be measured only when electrical power is known. So … Read more

Energy Meter Testing

We cannot think of life without electricity and when there is electricity consumption there is a need to measure its consumption. Here energy meter comes into picture. In every residence, malls, industry, everywhere energy meters are used to measure the electrical energy consumed. Those consumers which consume large energy needs better technology to manage their … Read more

Construction of AC Energy Meter

Energy meters are the basic part to measure the power consumption. It is used everywhere, no matter how big or small consumption it is. It is also known as watt-hour meter. Here we discuss the construction and working principle of induction type energy meter. To understand the structure of watt-hour meter, we must understand the … Read more