The difference between a megohmmeter and a multimeter
The megohmmeter is used to measure insulation, such as measuring the motor, because it can output a high voltage of more than 500V, while the output voltage of the multimeter is very low, so it cannot measure the insulation degree of the electrical appliance.
Megger is commonly known as shaking table, most of megger are powered by hand generator, so it is also called shaking table. It is scaled in megaohms (MΩ). -- Home of Electrotechnical Technology
A megohmmeter is a measuring instrument commonly used by electricians. The megohmmeter is mainly used to check the insulation resistance of electrical equipment, household appliances or electrical lines to the ground and between phases to ensure that these equipment, electrical appliances and lines work in a normal state and avoid accidents such as electric shock casualties and equipment damage.
Multimeters, also known as multiplex meters, multimeters, triple meters, multimeters, etc., are indispensable measuring instruments in power electronics and other departments. Generally, the main purpose is to measure voltage, current and resistance.
The multimeter is divided into pointer multimeter and digital multimeter according to the display mode. It is a multi-function and multi-range measuring instrument. Generally, the multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, etc., and some can also Measure AC current, capacitance, inductance and some parameters of semiconductors (such as β), etc.
The megohmmeter is to measure resistance, and the multimeter also has the function of measuring resistance. From this point of view, it seems that it can be replaced; but the megohmmeter is used to measure large resistance, and it is mostly used to measure the insulation resistance of electrical equipment. The unit is in How many megaohms or more, and the range of the multimeter is mostly in the ohm level, so when the resistance is large, it will display infinity, and the data cannot be read.
Therefore, a multimeter cannot replace a megohmmeter.
The megohmmeter is a high resistance meter, and the general multimeter is a medium resistance meter. The insulation resistance between the ground and the ground is a basis for preliminarily judging whether the equipment can be put into operation.
The ohm gear of the multimeter is mainly used to measure the resistance value of the equipment components, and it can also be used to measure the continuity of the wires. When there is no megohmmeter in the maintenance, it can also roughly measure the ground insulation resistance of the equipment (or electrical appliances).
Attachment 2, the megohmmeter is used for measuring insulation, such as measuring the motor, because it can output a high voltage of more than 500V, and the output voltage of the multimeter is very low, so it cannot measure the insulation degree of the electrical appliance.
A megohmmeter is used to measure insulation resistance, commonly known as a shaker. There are generators inside, commonly used are 250V, 500V, 1000V, 2500V. -- Home of Electrotechnical Technology
The multimeter is used to measure AC and DC voltage, DC current, resistance, and can measure the magnification of triodes, as well as diodes, capacitors, inductances, etc.
A megohmmeter is used to measure insulation resistance, commonly known as a shaker. There are generators inside, commonly used are 250V, 500V, 1000V, 2500V. The multimeter is used to measure AC and DC voltage, DC current, resistance, and can measure the magnification of triodes, as well as diodes, capacitors, inductances, etc.
A megohmmeter will emit 500V, but very little current. The multimeter will emit voltage when measuring resistance, and the voltage is very low; when measuring voltage and current, it will not emit voltage.
An ohmmeter is used to measure insulation resistance, commonly known as a shaker. There are generators inside, commonly used are 250V, 500V, 1000V, 2500V.
The multimeter is used to measure AC and DC voltage, DC current, resistance, and can measure the magnification of triodes, as well as diodes, capacitors, inductances, etc.
