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Insulated pad is introduced
Insulated pad is also known as insulation blankets, insulation, insulation rubber sheet, insulating rubber sheet, rubber pads, insulation, insulation foam rubber insulation, insulation gasket, etc., has a larger volume resistivity and electric breakdown resistance rubber gasket. Used for power distribution and other workplace mesa or floor insulation.Chinese name is insulated pad Foreign names RUBBER SHEET, can also be understood as insulation blankets, insulation etc with large volume resistivity and electric insulation breakdown type
1, insulation pads ingredients:
Insulating rubber mat is mainly made of rubber insulation materials with NR, SBR and IIR excellent insulation performance of nonpolar rubber manufacturing.
2, insulated pad features:
Insulation mat under the surface should be no harmful irregularity.Harmful irregularity refers to one of the following characteristics, namely uniformity damage, damage to the surface smooth contour defects, such as holes, cracks, local uplift, incision, mixed conductive foreign body, creasing, gap, concave and convex ripple and casting marks, etc.Harmless irregularity refers to the process of formation of the surface irregularity. Good quality insulated pad no peculiar smell, no bubbles, no pit, surface smooth and neat and clean
3, insulating rubber mat thickness measurement:
Throughout the insulating mat shall be randomly selected five or more different points for thickness measurement and inspection. The micrometer or same precision instrument can be used for measurement. Accuracy should be within 0.02 mm micrometer, measure the diameter of the drill is 6 mm, flat the diameter of the presser foot was (3.17 + 0.25) mm, presser foot should be able to exert pressure (0.83 + 0.03) N. Insulation pads should be placed flat, so that the micrometer to measure between is smooth.Under the insulating rubber mat surface should be no harmful irregularity. Insulated pad harmful irregularity refers to one of the following features, namely, destroy the uniformity, smooth surface damage contour defects, such as holes, cracks, local uplift, incision, mixed conducting foreign body, creasing, concave and convex ripple and casting marks, etc.
According to the color can be divided into: black insulation pads, insulation pads, red green, insulation pads, dark green insulated pad, electric ash insulated pad,By non-skid type: conventional insulation pads; Antiskid insulated pad (anti-skid pads, willow antiskid insulated pad, convex point insulated pad),Have insulated pad with word again, conventional insulated pad.
Insulated pad mainly used in the substations, power distribution, power distribution device used for the laid of the ground, an insulating effect, the monsoon humidity is big, insulation protection work is even more important, because the monsoon rainfall is bigger, a lot of transformer room, transformer room, for the sake of safety, begin to use a higher standard of insulated pad, so the demand of the products increases a lot. Lettering rubber gasket is temporary for a mobile platform using insulation type insulation pad, the above general inscribed with the words \"in this work\". Suitable for temporary repair, or inspection need. Lettering pads generally can be divided into: 10 kv, 35 kv, 110 kv, 220 kv special specifications, etc.
(1) according to the voltage level can be divided into 5 kv, 10 kv and 15 kv, 20 kv, 25 kv, 30 kv, 35 kv;
(2) according to the color can be divided into: black insulation pads, insulation pads, red green, insulation pads, dark green composite insulated pad
(3) can be divided by thickness: 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm.
(4) according to the width can be divided into: 1 meters, 1.2 meters, 1.5 meters.
Appearance: black spot or uneven: depth or height shall not exceed the rubber gasket thickness tolerance;
Bubble: in every square metre, the area is not greater than 1 cm2 bubble is not more than 5, the distance between any two bubbles is not less than 40 mm;
Impurities, depth and length of no more than rubber gasket thickness is not less than 40 mm;
The edge is not neat or sponge: width does not exceed 10 mm, length is not less than 1/10 of the rubber gasket chief;
Crack: not allowed to have
Should be stored in dry and ventilated environment, away from heat source, more than 20 cm off the ground and wall. Avoid by acid and alkali and oil pollution, do not open to prevent avoid direct sunlight.
The national standard
HG2949-1999 standard for electrical insulating rubber sheet
Projects: power frequency withstand voltage test
Period: 1 year
Want to ask:
Pressure/duration/power frequency voltage level
High pressure / 15 kV / 1 min
The low pressure / 3.5 kV / 1 min
Description: used in electric equipment area
Insulated pad test wiring diagram
Test with lower bunk wet cloth pad will be insulated or metal foil, and should be smaller than measured insulation pads around 200 mm, continuous uniform booster to the voltage value given in table 8, 1 min, observe whether the breakdown phenomenon, without breakdown, through the experiment. Sample segmentation experiment, two test edge to overlap. As pictured.
(1) 5 kv insulated pad thickness: 3 mm proportion: 5.8 KG/m2 colors: red, green, black
(2) : 10 kv insulated pad thickness 5 mm proportion: 9.2 KG/m2 colors: red, green, black
(3) : 15 kv insulated pad thickness 5 mm proportion: 9.2 KG/m2 colors: red, green, black
(4) : 20 kv insulated pad thickness 6 mm proportion: 11 kg/m2 colors: red, green, black
(5) : 25 kv insulated pad thickness 8 mm proportion: 14.8 KG/m2 colors: red, green, black
(6) kv 30-35 kv insulated pad thickness: 10 mm to 12 mm proportion: 18.4 KG/m2 22 KG/m2 colors: red, green, black
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