What does the OL in the display mean?

What does the OL in the display mean?

If the screen displays 1 or OL (open loop), there’s no continuity—that is, there’s no path for electric current to flow from one probe to the other.

What does OL mean on voltmeter?

open loop

When a meter shows OL It means the meter is being damaged?

Testing Voltage – the screen will show 1 or OL if the range is very low, indicating that it is out of range or overloaded. While it won’t damage or put your multimeter at risk, it is still suggested to set the dial to a higher range.

What is a good Megger test result?

Turn on and read the meter. Anything reading between 2 megohms and 1000 megohms is usually considered a good reading, unless other problems have been noted. Anything less than 2 megohms indicates an insulation problem.

What is a good motor Megger reading?

The rule may be stated: Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms.

Why should you not measure insulation resistance with a multimeter?

The reason a multimeter cannot measure such extremely high resistance is because the measurement is performed with a low voltage (often a 9V battery inside the multimeter). The multimeter circuitry provides a constant current, and it will measure the voltage across the probes in order to calculate the resistance.

What is a multimeter used for?

A digital multimeter is a test tool used to measure two or more electrical values—principally voltage (volts), current (amps) and resistance (ohms). It is a standard diagnostic tool for technicians in the electrical/electronic industries.

What is mega ohm meter?

A megohmmeter is an electric meter that measures very high resistance values by sending a high voltage signal into the object being tested. Typically, however, this is the only function a megohmmeter performs.