What is the effect of setting the multimeter to 1000V voltage range to measure 220V AC?
Strictly speaking, a multimeter is not allowed to use the wrong gear. I remember when I was studying, I used to say, 'Don't look at the gear, don't use a multimeter.' I studied for 60 mornings, and every morning in class, the first thing I did was select and measure the gear with a multimeter.
If it's just about discussing research or misusing the gear of the multimeter, then that's another story. Using the 1000V DC voltage range of a digital multimeter to test the AC 220V voltage, the measurement result will show that there are constantly jumping numbers from 0 to several volts on the display screen, and the - sign in front of the number also keeps jumping. The displayed results have no reference value.
After measurement, some multimeters can still be used normally, while others display all the gears randomly. This may also be related to the model of the multimeter.
Anyone with a little common sense would not use a 1000V DC gear to measure 220 AC
This is theory. You can try it yourself
first. When measuring AC voltage with a digital multimeter in DC voltage mode, it usually jumps below the base number. After being divided by a resistor, the measured AC voltage decays to a 200mV effective value and is sent to the basic meter for measurement. The 7106 basic meter cannot recognize AC signals, so there may be jumps or display 000 that cannot be measured.
Another thing. A digital multimeter, when measuring DC power in AC mode, generally displays 000 or jump count.
If it is a pointer multimeter, there may be inaccurate measurement when measuring AC voltage in DC voltage mode. However, if measuring DC voltage in AC voltage mode, the measured value will be twice as high as the actual value because the AC voltage mode has diode rectification. After diode rectification, the signal to the meter head reflects the average value of AC voltage, so it will be more than twice as high.
I witnessed an electrician using a digital multimeter to measure the AC voltage of a generator. He should have turned the gear to AC 1000V, but mistakenly turned it to DC 1000V. As soon as the measurement was taken, the meter started to smoke. I opened the circuit board for him and found that a large piece was burned out, so I threw it away directly.
It will not burn out the digital multimeter, but the displayed number is not the actual AC voltage value. So don't do this. It's like using a ruler of length to test the weight of an object is meaningless.
