The third is a method of generating a DC high voltage using a transistor oscillating or dedicated pulse width modulation circuit, a general battery type and a commercial type insulation resistance meter. (1) When measuring general electrical appliances such as motors, the L end of the meter is connected to the component under test (such as the winding), and the E end is connected to the casing; when measuring the cable, in addition to the above provisions, the G end of the meter should be The sheath of the cable under test is connected. What Is the Insulation Resistance Meter and How to Test It? This fundamentally eliminates the influence of surface leakage current. The deflection angle of the head pointer is determined by the current ratio in the two coils. middle. Your email address will not be published. (2) Before use, check whether the watch and its lead wire are normal. If the normal insulation resistance value is low, there may be some hidden danger or damage in the insulation structure. When measuring the insulation resistance of the electrical equipment to the ground, the "L" is connected to the part to be tested with a single wire, and the "E" is connected to the equipment casing by a single wire; if the insulation resistance between the two windings in the electrical equipment is measured, “L” and “E” are connected to the terminals of the two windings respectively; when measuring the insulation resistance of the cable, in order to eliminate the error caused by surface leakage, the “L” terminal, the “E” connector, the “G” terminal and An insulating layer between the outer casings. IntroductionBefore we understand resistors, we need to know what a resistor is. It can only be measured if the device is not powered and cannot be charged by other power sources. The resistance display of a typical megger header needs to span several orders of magnitude. Another method is to use a linear ammeter as the measurement and display. . It can only be measured if the device is not powered and cannot be charged by other power sources. The calibration method is to directly measure the standard resistance with a certain value and check whether the measurement error is within the allowable range. The megger should be placed in a stable and stable place and away from large external current conductors and external magnetic fields. When measuring the insulation resistance of the electrical equipment to the ground, the "L" is connected to the part to be tested with a single wire, and the "E" is connected to the equipment casing by a single wire; if the insulation resistance between the two windings in the electrical equipment is measured, “L” and “E” are connected to the terminals of the two windings respectively; when measuring the insulation resistance of the cable, in order to eliminate the error caused by surface leakage, the “L” terminal, the “E” connector, the “G” terminal and An insulating layer between the outer casings.

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