In daily life and work, the insulation resistance of all electrical devices and equipment must meet the requirements of relevant codes and standards to ensure the safety of field operation. No matter it is electrical cable, sectional protection equipment, motor, generator, etc., the conductor part must be isolated by high insulation resistance material to prevent current from flowing out.
Over time, the quality of insulation may deteriorate due to the environment in which the equipment is placed, operating conditions, or other external forces. It reduces the resistivity of insulation materials, and then increases the leakage current, which may lead to serious accidents threatening the safety of human life or property, and may cause the production shutdown of the factory, and suffer economic losses.
The insulation resistance tester is used to measure the resistance of various insulation materials and the insulation resistance of transformers, motors, cables and electrical equipment to ensure that the equipment, electrical appliances and lines work in normal state and avoid electric shock, injury and equipment damage accidents.
For capacitive load larger test products, generally choose the appropriate voltage level and large enough output short-circuit current, insulation value range, automatic discharge of the test product insulation resistance tester, otherwise the resistance will affect the greater, and make the absorption ratio test results appear larger error. For the strong interference of the test site, should choose pointer insulation resistance tester, because the digital display, the measurement data has a large jump, so as to confirm the real resistance value, and the pointer megohmmeter itself on the strong magnetic field interference relatively slow (mechanical meter damping effect). Even if there is an impact, the pointer header display is only a slight swing, the value range is also very intuitive. For small interference, the requirement of accurate measurement of insulation resistance, should choose digital display, because digital display intuitive, high precision. To measure the absorption ratio and polarization index and other large capacity test occasions, should choose to automatically measure the absorption ratio and polarization index of intelligent insulation resistance tester.
Wuhan Xinshengneng Technology Co., Ltd. is a professional insulation resistance equipment manufacturer, not only produces all kinds of power testing equipment, and professional technical team to provide all kinds of test technical services, more products more models to choose from, welcome to call 0312-3188565 details!
