I am going to start with the 3-phase wiring and its 3-phase diagrams, in this post, you will learn how to wire a voltmeter for 3-phase wiring. In this post, I am sharing with you a diagram in which I have shown the complete method of 3 phase 440 V and its wiring with a voltmeter. For 3 phases we use the 0 to 500 volts range voltmeter.
Something about Voltage and Voltmeter
We know that the force required to make the flow of electrons in a conductor is called voltage, and the measurement device which is used for measuring the voltage is called a voltage meter or voltmeter. Note that the Voltage unit is volt and it is denoted by V.
And if a voltage meter has a V symbol then it means that it is a voltage meter.
How to wire Volt meter for 3 phase 440 volts
In three phase supply, we have 3 phase or three Line voltage and one neutral. The phase is denoted by L in every place and I also named wire with names L1, L2, and L3. Note that for 3 phase supply we use wires colours Red, Yellow, and Blue and for neutral always Black.
Now let’s see how to wire 3 phase voltage meter.
In the above diagram, I show 3 phase 4 wire system supply but I only connect L1 and L2 (red and yellow) to the volt meter or voltage meter. for a three-phase voltage meter, you can only connect 2 line wires and if you connect the neutral and phase to the voltmeter then the volt meter shows 220 voltage which is single-phase voltage.
Note that between to phase the voltage will be 440 +/- 5% and between the neutral and phase the voltage will be 220 +/- 5%.
Note that this will be only for those places where the voltage between phase / neutral is 220.
I hope this is a good start in 3 phase wiring topic, and now you will get complete knowledge about 3-phase volt meter wiring. However, I will soon write more posts about the 3 phase. Now if you want to give us some suggestions or any questions regarding this post then use the below comment section.