Glass-epoxy tubes for general technical purposes

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  • Glass-epoxy tubes for general technical purposes

Glass-epoxy tubes are made by winding on metal cores saturated with epoxy composition of glass fibre. The tube structure is programmed. The direction of fibre layering in the layers depends on the type of loads carried by the tube, most frequently bending and torsion.

Tubes are characterized by a high anisotropy of mechanical and electrical properties.
Due to excellent electrical insulation properties and a high mechanical strength, they are widely used in power engineering for indoor use as elements of HV protective equipment or as insulating and structural elements of devices and equipment used in HV switchgear.

The Company offers the following types of tubes:

  • general purpose tubes designed for bending, internal diameter range:

Ø16 to Ø52 mm and length up to 2260 mm compliant with ZN-04/RSE-1;

  • insulation tubes filled with foam for voltages exceeding 1 kV, compliant with

insulation pipes;

  • hollow insulation tubes for voltages exceeding 1 kV, compliant with PN-EN 61235;
  • other, as specified by the customer.
Dane techniczne

GENERAL PROPERTIES

 

Resin Type

Epoxy Resin

Glass Type

E

ECR

Heat Resistance Class

F

H

 

MECHANICAL PROPERTIES

Value

Unit

Standard

E – Bending Modulus

>26

GPa

PN-EN 61235/PN-EN 60855-1

Bending Strength

>200

MPa

PN-EN 61235/PN-EN 60855-1

Torsional Strength

>100

MPa

PN-EN 61235/PN-EN 60855-1

 

ELECTRICAL PROPERTIES

Value

Unit

Standard

Wet Specific Surface Resistance

>1013

Ω

PN-E-04405

Dry Specific Surface Resistance

>1014

Ω

PN-E-04405

 

PHYSICAL PROPERTIES

Value

Unit

Standard

Content of Glass in the Material (by Weight)

>75

%

PN-EN ISO 1172

Density

1.97

g/cm3

PN-EN ISO 1183-1

List of Available Glass-Epoxy Tubes

No.

RSE Tube

No.

RSE Tube

No.

RSE Tube

1

16xDx1700

12

28xDx2500

23

66xDx1200

2

18xDx2100

13

30xDx2100

24

70xDx1700

3

18,5xDX2100

14

32xDx2500

25

78xDx1200

4

19xDx2100

15

32,5xDx2260

26

80xDx2720

5

20xDx2100

16

34xDx2100

27

85xDx1200

6

22xDx2100

17

35xDx2100

28

90xDx1200

7

24xDx2100

18

40xDx2100

29

100xDx1200

8

25xDx2100

19

42xDx1600

30

105xDx1200

9

26xDx2260

20

49xDx2100

31

110xDx1950

10

27xDx2100

21

52xDx2100

32

112xDx1200

11

27,5xDx2100

22

60xDx2800

33

122xDx1200

D – external tube diameter specified by the customer, where the minimum wall should be not less than 2 mm thick for diameters up to 70 mm and 4 mm thick for diameters over 70 mm.

The maximum tube length is specified in the table. At the customer’s request, tubes can be manufactured

with lower lengths than specified above.