Natural rubber sheet is widely used in substation, power plant, power distribution room, laboratory and field live operation, etc., mainly made of plastic insulation materials, insulation pad on the surface should be no harmful irregularities.
Harmful irregularity refers to one of the following characteristics, namely damage to uniformity, damage to the surface smooth contour defects, such as small holes, cracks, local uplift, incision, mixed conductive foreign body, creases, voids, embossed corrugations and casting signs The Harmless irregularity refers to the surface irregularities that are formed in the production process. The details are as follows:
1, natural rubber plate specifications (1) according to the voltage level can be divided into 5kv, 10kv, 20kv, 25kv, 35kv
(2) by color can be divided into: black pad, red pad, green pad
(3) according to the thickness can be divided into: 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm.
2, the use of natural rubber plate and storage methods:
Widely used in substations, power plants, power distribution rooms, laboratories and field live operations and so on.
Should be stored in a dry and ventilated environment, away from heat, leaving the ground and wall 20cm or more. To avoid contamination by acid and alkali and oil, do not open to prevent direct sunlight.
Natural rubber sheet thickness: the entire natural rubber sheet should be randomly selected more than 5 different points for thickness measurement and inspection. Can be measured using thousands of points of mind or the same precision of the instrument. The precision of the micrometer should be within 0.02mm, the diameter of the drill is 6mm, the diameter of the flat presser foot is (3.17 ± 0.25) mm, and the presser foot should be able to apply the pressure of (0.83 ± 0.03) N. The insulation pad should be placed flat Make the micrometer between the measurements smooth.
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