Electrical Learning Part-11||Week-11||Measuring electrical 440 voltage with a analog & digital multimeter.

Steemian Friends,
Today, I am going to write Electrical Learning Part 11. Today, I will measure 440 volts of electricity. In the previous electrical learning part, I showed measuring 220 volts. Hopefully, everyone will benefit from reading my writing.

Design By Canva

Step 01:

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Equipment Required:

• Analog Multimeter
• Digital Multimeter
• MCB (63 A)
• Tester
• 3-Phase Power Supply

Today, I will measure the voltage of 440 volts of electricity with analog and digital multimeters. I first take an analog and a digital multimeter. Then, I would first measure the 440 voltage with a digital multimeter. So, set the digital multimeter to voltage mode.

Analog & Digital Multimeter

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Measure voltage with digital multimeter(440 Volt)

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Step 02:

Then I take a 3-phase MCB (Miniature Circuit Breaker). MCB has three terminals. I connect 3 phase power lines to three terminals of MCB. Now out of three terminals one red, one yellow, and one black. I connect three terminals to three points.

MCB

Step 03:

Then I connect the red and black terminals of the digital multimeter to the two terminals of the 3-phase MCB. Then, I set the digital multimeter to pre-select the AC voltage. Looking at the display of the digital multimeter, it shows 425 volts. In our country, 415 to 440 volts is the ideal voltage. If this rating is less and more than we assume power voltage problem. Then, we try to tick the voltage in different ways.

Measure voltage with digital multimeter

Then hold either the red or black knob of the digital multimeter open to the third terminal of the MCB. Then, I looked at the display of the digital multimeter and saw that the same voltage was showing 425. That means my voltage measurement is OK. If there was not the same voltage or ideal voltage then I would have assumed there was a problem. Then, there was a possibility that my equipment running at that voltage would be damaged.

Measure voltage with digital multimeter

Measure voltage with Analog multimeter(440 Volt)

Step 04:

Then I measure the voltage with an analog multimeter. First, select the AC voltage option of the analog multimeter. Which is seen in the picture. Then, I select the voltage rating. Then I hold the red and black knobs of the analog multimeter to the two terminals of the MCB. Now, look at the display of the analog multimeter and see that the analog cut is standing at 425 volts. I can understand the voltage rating by looking at the display.

Analog Multimeter

Then, I hold either one of the two terminals of the analog multimeter red or black to the other terminal of the MCB. Then I look again at the display of the analog multimeter and see the same voltage ie 425 voltage. Two or three voltage differences are not a problem here. However, if there is a difference of five or more voltages, it is assumed that there is a problem with the voltage or the MCB. Thus, we can measure 3-phase or 440 voltage with an analog multimeter.

Measure voltage with Analog multimeter

In the next electrical learning part, I will write about the Megha meter. Hope everyone will benefit from my writing. Working with electricity is easy with a little courage and confidence.

Thank you for reading my post, and I am leaving today. Allah Hafez.