Fiberglass Tube For Lightning Arrester

Epoxy fiberglass tube is the main core of lightning arrester,breaker and mutual inductor.

Physical and mechanical parameters of epoxy fiberglass tube

Technical requirement
Normal Diameter	Thickness	Length	Tolerance Allowed
			inside diameter	outside diameter	Length
3070	320	500	±0.3	±0.3	±1
70150	320	1000	±0.5	±0.5	±2
150550	10100	2800	±0.5	±0.2	±2
Physical and mechanical parameters			Physical and mechanical parameters
Index  Name	Unit	Index	Index  Name	Unit	Index
Density	g/cm3>	≥1.80	Density	g/cm3>	≥1.80
Water absorption	%	≤0.15	Water absorption	%	≤0.15
Intensity of curvature(circling direction)	Mpa	≥400	Intensity of curvature(circling direction)	Mpa	≥400
Intensity of compress	Mpa	≥98	Intensity of compress	Mpa	≥98
Voltage vitality on parallel layer at normal state for 5min	Kv	≥25	Voltage vitality on parallel layer at normal state for 5min	Kv	≥25
Voltage vitalityon vertical layer in the oil at 90 for 5min	MV/m	≥12	Voltage vitalityon vertical layer in the oil at 90 for 5min	MV/m	≥12

Fiberglass Tube For Lightning Arrester