Ground Detector Lamp Method Principle

Ground Detector Principle

The ground detector is an instrument which is used to detect conductor insulation resistance to ground. An ohm meter, or

Three Phase Wattmeter principle

Ampere Hour Meter

The ampere-hour meter registers ampere-hours and is an integrating meter similar to the watt-hour meter used to measure electricity usage

Two Wattmeters to Measure 3 Phase Power

Three Phase Wattmeter

Total power in a 3φ circuit is the sum of the powers of the separate phases. The total power could

Wattmeter Principle

Wattmeter

The wattmeter is an instrument which measures DC power or true AC power. The wattmeter uses fixed coils to indicate

Ohm Meter Circuit

Ohm Meter

The ohm meter is an instrument used to determine resistance. A simple ohm meter (Below Figure) consists of a battery,

Ammeter with Shunt

Ammeter

The ammeter measures electric current. It may be calibrated in amperes, milliamperes, or microamperes. In order to measure current, the