Single Phase Solar Energy Inverter

FT series single phase solar energy inverter

How to measure voltage with a multimeter

The voltage measurement method of the multimeter should first align the range switch within the five-speed range marked with V (the AC voltage should be aligned with the AC voltage gear, and the DC voltage should be aligned with the DC voltage gear).

When measuring the voltage, connect the meter leads to the circuit under test in parallel. According to the approximate value of the circuit under test, select a suitable range position. The maximum value of each dry cell is 1.5V, so it can be placed in the 5V range. At this time, the 500 of the full scale reading of the needle on the panel should be read as 5.

That is 100 times smaller. If the needle points at the 300 mark, it reads 3V. Note that the index value indicated by the tip of the range switch is the corresponding value of the full-scale reading of the needle on the meter head. When reading the meter, you can read the real value as long as it is converted accordingly.

Except for the resistance gear, all gears of the range switch read the measurement results in this way. In the actual measurement, when the approximate value of the measured voltage cannot be determined, the switch can be turned to the maximum range first, and then the range can be reduced to the appropriate position.

When measuring DC voltage, you should pay attention to the positive and negative polarities.

If you don't know the positive and negative polarity of the circuit, you can put the range of the Wantian meter in the maximum gear, try it on the circuit under test quickly, and see how the pen needle is deflected, you can judge the positive and negative polarity.

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