Insulation sheet Which is better? Days expanded electrical engineering trustworthy

Insulation sheet Which is better? Day expanded professional electrical insulating sheet trusted technical parameters: in accordance with the voltage level can be divided into: 5kv, 10kv, 20kv, 25kv, 35kv, 500kv and so on. It is divided by color: black insulation sheet, insulation sheet red, green insulation blanket. Can be divided according to the thickness: 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm insulating plastic sheet appearance and Size: scarring or uneven portion of the depth or height must not exceed per square meter sheet thickness tolerance, bubbles, area not in 1cm2 of air bubbles not more than 5, between any two bubbles is not less than 40mm, in which the impurity depth and length does not exceed the plastic sheet thickness not less than 40mm, sheet edge uneven or spongy part of the width not exceeding 10mm, length more than 1/10 of the total length of the plastic sheet, and not allowed to have cracks. Insulation sheet and molding process: the lower surface of the insulating plate should be no harmful irregularities. Harmful irregularities refers to one of the following characteristics, namely, to destroy the uniformity of the smooth contour of the damaged surface defects, such as holes, cracks, local uplift, incision, mixed with conductive particles, joints, voids, bump, ripple and casting marks. Harmless irregular refers to the production process of the formation of surface irregularities. Insulation sheet thickness: Throughout the insulation board should be randomly selected more than five different points for thickness measurement and inspection. It can be used thousands of darling or the same precision instrument to measure. Micrometer accuracy should be less than 0.02mm, measured drill diameter 6mm, diameter plane presser foot (3.17 ± 0.25) mm, presser foot should be able to exert pressure (0.83 ± 0.03) N The insulation board should be flat to place order micrometer measurements between so smooth. Insulation sheet Storage: insulating plate should be stored in a special tank, avoid direct sunlight, rain and snow Baptist leaching, extrusion and sharp objects to prevent collisions. Prohibition insulation board and oil, acids, alkalis or other harmful substances in contact and more from the heat source 1m. Storage temperature should be between 10 ℃ ~ 21 ℃. Scope and insulation board storage: Widely used in substations, power plants, power distribution room, test roommate and wild live operations. Should be stored in dry and ventilated environment, away from heat, more than 20cm off the ground and walls. Avoid being affected by acid-base and oil pollution, not to the open air to prevent avoid direct sunlight.