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3520 phenolic paper tube - transformer insulation tube

3520 phenolic paper tube - transformer insulation tube

Epoxy phenolic glass cloth laminated pipe referred to as epoxy tube

1.  definition and use

 

Epoxy phenolic glass cloth laminated tube is made of non-alkali glass fiber cloth as the base material, epoxy phenolic resin as a binder heating baking and curing from the curling products, with high mechanical strength, high Wet electrical performance and good stability, suitable for mechanical, electrical and electronic products.

 

2.  epoxy phenolic glass cloth laminated pipe technical requirements


 

2.1 epoxy phenolic glass cloth laminated tube appearance

 

The surface should be flat, not allowed to have a layer, foam, but allowed to have no more than the wall thickness to allow the deviation of the slight wrinkles and processing finishing traces. The inner wall allows for slight wrinkles. Both ends should be cut neatly.

 

2.2 epoxy phenolic glass cloth laminated pipe main performance indicators

 

number

project name

unit

experiment method

index

One

density

g/cm

GB/T5132

1.40

Two

Bending strength

MPa

Attached to A in Q/JBQP50

176

Three

Compressive strength

MPa

GB/T5132

69

Four

Shear strength

MPa

Attached to A in JB/T8150

14.7

Five

Volume resistance series

Under normal

After immersion


Ω·m

GB/T1410
4.7 in Q/JBQP50

1.0×10101.0×108

Six

Parallel layer to insulation resistance

Under normal

After immersion


Ω

GB10064
4.8 in Q/JBQP50

1.0×10101.0×107

Seven

Dielectric loss tangent, 50Hz

-

GB/T5132

0.030

Eight

Vertical layer to withstand voltage

In the (90 +2) ℃ of the transformer oil pressure 5min

Wall thickness

1.5mm
2.0mm
2.5mm
3.0mm

kV

GB/T5132

internal diameter
625mm
7
10
13
15

internal diameter
26mm
12
14
16
18


Nine

Parallel layer to withstand voltage

Pressure in the (90 + 2) ℃ transformer oil

5min

kV

GB/T5132

25

Ten

Surface withstand voltage

Damps after 24 hours in normal air pressure

5min

kV

GB/T5132

12


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