Measuring Current Flow in Open Circuit R Phase

[lukus09]

how do i measure the current flow threw the neutral wire if phase R is open circuited? the impedance per load is 3+7j

 

[Carl Pugh]

Measure current using a clamp on ammeter or a current transformer +ammeter.

If you wish to calculate the current, calculate the current in each phase and add them. The currents have to be calculated and added using vectors. Since this is a three phase circuit the currents in the three phases will be 120 degrees apart.

 

[oswaler]

To measure the current flow through the neutral wire in an open circuit R phase, you will need to use a clamp meter. A clamp meter is a type of electrical tester that can measure the current flow in a wire without having to physically touch the wire. To use the clamp meter, you will need to open the clamp and place it around the neutral wire. Make sure that the clamp is securely attached to the wire. Then, turn on the clamp meter and select the AC current setting. This will allow you to measure the current flow in the neutral wire.

The impedance per load of 3+7j indicates that there is a combination of resistance and reactance in the circuit. This means that the current flow in the neutral wire will be affected by both factors. The resistance component will cause the current to decrease, while the reactance component will cause the current to fluctuate. Therefore, it is important to take both factors into account when measuring the current flow in the neutral wire.

Once you have the clamp meter set up and attached to the neutral wire, you can read the current flow on the display. Keep in mind that the reading may fluctuate due to the reactance component of the impedance. You can also use this reading to calculate the power being drawn by the load, using the formula P=I^2R, where I is the current and R is the resistance component of the impedance.

In summary, to measure the current flow in an open circuit R phase, you will need to use a clamp meter and take into account the impedance per load of 3+7j. This will allow you to accurately measure the current flow in the neutral wire and calculate the power being drawn by the load.