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Vulcanized paper tube

Vulcanized fiber round tube is used to make fuse tube for dropout fuse cutout

Surface treatment: Smooth, knurling or  rolled thread  on request

Application: all types of electrical dropout fuse cutout

Samples are available for testing the quality.

Fuse tube process: Vulcanized fiber tube was wrapped by fiber glass impregnate epoxy resin, The angle of wind is optimized to provide a finished tube with good tensile and anti explosion strength.Vulcanized fiber tube becomes an integral tube liner which have the property of gas-generating and arc-quenching characteristics. Epoxy resin fiberglass tube property of strength and water resistance.  The fiberglass tube is usually coated with UV resistant paint.

Advantage: no-spark generating, char layer forming to prevent liner from excessive ablation, and the optimum amount of arc-quenching gas generating. 

Application :The main application of fiberglass tube is used in expulsion fuse tube cutout for interrupting high voltage AC circuits during power surge.

Technical Character:

Item

Unit

Claim

Density

g/cm³

>1.6

Water Absorption

%

<0.5

Cut strength

Pa(kg5/cm²)

>78.4x10³

Curved strength

 

>1569x10³

Pressure strength

 

>883xx10³

Compressive Strength, Axial

 

 

(Pressure five minute with normal voltage) Thickness of the wall

2.0
2.5
3.0
4.0
5.0
6.0
7.0
8.0

KV



14
16
18
20
24
28
30
34

Surface resistance coefficient(500V)

Ω

>1.0x10¹²

Volume resistance coefficient(500V)

Ω x cm³

>1.0x10¹²

At the frequency No. 50 medium dawdle corner tangent

%

<0.05



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