What resistance can't be measured with a multimeter? For example, the insulation resistance of the motor and the contact resistance of the switch contact can't be measured accurately with a multimeter

What resistance can't be measured with a multimeter? For example, the insulation resistance of the motor and the contact resistance of the switch contact can't be measured accurately with a multimeter, right? Some newly designed safety testers mostly cover the function of insulation resistance test. The insulation resistance testing function must basically provide a voltage of 500 to 1000VDC, and the measuring range of resistance must be several hundred k? How many g's were measured? . These functions can enable the manufacturers of products to meet the safety requirements. In some specific products, TUV, VDE and other safety law enforcement units will require insulation resistance test before the withstand voltage test. At present, this requirement is mostly cited in the safety regulations test in product design.

The basic theory of insulation resistance test is very similar to that of withstand voltage test. The judgment of withstand voltage test is based on leakage flow, and insulation resistance test is based on the form of resistance value. How many m does it usually have to be? Above.

The higher the insulation resistance, the better the insulation performance of the product. The connection mode of insulation resistance test is exactly the same as that of withstand voltage test, and the measured insulation resistance value is the equivalent resistance value formed by various related networks connected between two tested objects and their periphery.

The cover insulation resistance test function included in Qingdao Ousheng electronic safety test equipment is an independent test function, which will not overlap with the withstand voltage test function and is more convenient to use.

Electrical equipment, motors, transformers and other stunts must be tested with insulation resistance tester.