Phenolic cotton cloth rod

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Phenolic cotton cloth rod electrotechnical round GOST 53858-74. Epoxy glass laminate rod electrotechnical round represent the layered pressed material made by a method of winding and consisting of several layers of a cotton fabric, impregnated heat-convertible binding. Epoxy glass laminate rod are applied as insulating and a constructional material to long work in transformer oil and on air in conditions of normal relative humidity at temperature from-65°С up to 120°С.Epoxy glass laminate rod perfectly are exposed to machining and can be used as plugs, linings and other details of friction. Length of cores: from 500 up to 1000мм. Diameters of cores: 8, 13; 18; 25,0; 40; 50; 60; 80; 100; 120; 145; 175; 200 mm.

Phenolic cotton cloth rod, characteristic:

The name of parameters	Unit of measure	Diameter 8	13	18	25	40	50	60-200
Specific superficial electric resistance in an initial condition, not less	Ohm	-	1	1·1010	1·1010	5·109	5·109	5·109
Internal electric resistance in an initial condition, not less	Ohm	-	1·109	1·108	1·108	1·108	1·108	1·108
Density	kg/m³	1300- 1400	1280-1400	1250-1380	1250-1380	1250-1380	1250-1380	1250-1380
Breaking point at a static bend, not less	MPa	-	-	-	120	100	100	100
Breaking point at a stretching, not less	MPa	90	80	50	50	40	40	40
Water absorption after stay in the distilled water at t (20±2) °С during 24 h., no more	%	0,9	0,9	1	1	1	1	1
Stability short-term heating, not less	°С	130	130	130	130	130	130	130
Oil resistance in transformer oil during 4 h., not less	°С	120	120	120	120	120	120	120
Specific superficial electric resistance in an initial condition, not less	Ohm	-	1	1·1010	1·1010	5·109	5·109	5·109
Internal electric resistance in an initial condition, not less	Ohm	-	1·109	1·108	1·108	1·108	1·108	1·108
Penetrative pressure in parallel layers in transformer oil at t (20±2) °С, not less	КВэфф	-	12	12	11	10	10	10

Phenolic cotton cloth rod

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