## Tuesday, September 5, 2023

An ammeter measures the electric current in a circuit. the name is derived from the name for the sl unit for electric current amperes A, in order for an ammeter to measure a device's current it must be connected in series to that device.

what is a selector switch

A selector switch can control on or off of different currents circuit by rotating the handle. Common used for control consisting of a mechanical, electrical or electronic device for making, breaking or changing the connections in a circuit.

In this video we explain 3 phase digital voltmeter connection with selector switch, we know we can measure voltage with voltmeter and voltmeter connect in parallel operation.

So connecting one voltmeter we can just measure single phase voltage but if we want to measure voltage between three phase by connecting single voltmeter so we have to use selector switch.

So by connecting selector switch we can measure voltage between all three phase by rotating selector switch.

And for digital voltmeter we have to give an auxiliary supply to voltmeter which is 220v by voltmeter display com3e

An ammeter measures the electric current in a circuit. the name is derived from the name for the sl unit for electric current amperes A, in order for an ammeter to measure a device's current it must be connected in series to that device.

what is a selector switch

A selector switch can control on or off of different currents circuit by rotating the handle. Common used for control consisting of a mechanical, electrical or electronic device for making, breaking or changing the connections in a circuit.

In this video we explain 3 phase digital voltmeter connection with selector switch, we know we can measure voltage with voltmeter and voltmeter connect in parallel operation.

So connecting one voltmeter we can just measure single phase voltage but if we want to measure voltage between three phase by connecting single voltmeter so we have to use selector switch.

So by connecting selector switch we can measure voltage between all three phase by rotating selector switch.

And for digital voltmeter we have to give an auxiliary supply to voltmeter which is 220v by voltmeter display com3e