Overview

The digital insulation resistance meter is composed of medium to large-scale integrated circuits. This table has a high output power and multiple output voltage levels (with 6 voltage levels). The rated insulation test voltage range is 250V~5kV, and the insulation resistance measurement range is 0.01M Ω~2000G Ω. The DC voltage measurement range is 0~1000V, and the AC voltage measurement range is 0~750V.

Preparation work for digital insulation resistance meter

(1) Before measurement, the power supply of the tested equipment must be cut off and short circuited to ground for discharge. It is not allowed to measure with the equipment live to ensure personal and equipment safety.
(2) For equipment that may induce high voltage electricity, this possibility must be eliminated before measurement can be carried out.
(3) The surface of the tested object should be cleaned to reduce contact resistance and ensure the accuracy of the measurement results.
(4) Before measurement, check whether the megohmmeter is in normal working condition, mainly checking its "0" and "∞" points. Shake the handle to reach the rated speed of the motor. The megohmmeter should indicate the "0" position when short circuited and the "∞" position when open circuited.
(5) When using a megohmmeter, it should be placed in a stable and secure place, and kept away from large external current conductors and magnetic fields.