Insulating Voltage Strength: Added at both ends of the insulatorVoltageThe higher the material is, the higher the material is.chargeAffectedElectric field forceThe bigger it is, the easier it will happen.ionizationCollision causes insulator breakdown. The lowest voltage at which an insulator breaks down is called the insulator´sbreakdown voltage。 When insulating materials with thickness of 1 mm are broken down, the voltage kilovolts needed to be added are called insulating voltage strength of insulating materials, which is referred to as insulating strength for short. Because insulating materials have certain insulation strength, various electrical equipment, various safety appliances (electrical pliers, electroscope, etc.)Insulating glovesInsulating rods, etc.), all kinds of electrical materials.ManufacturerThey all specify a certain allowable voltage, which is calledRated voltage。 When used, the voltage must not exceed its rated value, so as to avoid accidents.

Tensile strength: endurable per unit cross-sectional area of insulating materialspullFor example, glass can withstand 1400 Newtons of tension per square centimeter.

The insulation properties of insulating materials are closely related to temperature. The higher the temperature, the worse the insulation performance of insulating materials. In order to ensure the insulation strength, each insulating material has an appropriate maximum allowance.working temperatureAt this temperatureFollowingIt can be used safely for a long time, and will age rapidly beyond this temperature. According to the degree of heat resistance, insulating materials are classified into Y, A, E, B, F, H and C grades. For example, the maximum allowable working temperature of Class A insulating material is 105 C, which is commonly used.distribution transformer,MotorMost of the insulating materials belong to Class A.