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Composite Post Insulator for Electric Railway

 As the main product for railway contact network, composite post insulator is widely used in complex electrified railway tunnel. It can effectively prevent pollution flashover accidents, reduce the workload of cleaning and maintenance. Because of small size of composite post insulator, especially when the tunnel clearance is small, there is no substitute for porcelain and glass insulators.

 
Dimension of composite post insulator for electric railway:
post composite insulator
 

type

Model

Main dimension

creepage

H

h

D

h1

h2

d1

d2

b

e

Single insulator

FQB – 25/812

760

490

185

90

30

62

21

16

/

1200

FQB – 25/16

800

FQBJ - 25/812

760

1400

FQBJ - 25/16

800

FQBG - 25/812

520

200

1600

FQBG - 25/16

Double insulator

FQBS - 25/812

850

490

185

22

1200/145

FQBS - 25/16

890

FQBSJ - 25/812

850

1400/145

FQBSJ - 25/16

FQBSG - 25/812

890

520

200

1600/145

FQBSG - 25/16

deviation

+

20

/

1.5

1

/

 

-

0.5

0.5

0.025L+6.0

Electrical characteristics of composite post insulator for electric railway
post composite insulator
 

Model

Full wave lightning impulse voltage
kV

Power frequency withstand voltage  KV

Artificial pollution power frequency withstand voltage
kV

altitude
m

dry

wet

Dust density
mg/cm2

1

2

General pollution area

Heavy polluted area

Salt density
mg/ cm2

0.1

0.3

0.35

FQB-25/8,12,16
FQBS-25/8,12,16

270

160

130

/

36

31.5

/

≤2000

≤1000

FQBJ-25/8,12,16
FQBSJ-25/8,12,16

290

175

140

40

/

31.5

≤3000

≤1500

FQBG-25/8,12,16
FQBSG-25/8,12,16

310

190

150

45.7

/

36.0

≤4000

≤2000

Mechanical characteristics of composite post insulator for electric railway

 

Model

Rated rupturing load
kN

Sliding load
kN

 

70% load capacity

 

Residual

migration

Tension rupture

Bending rupture

FQB-25/8  FQBS-25/8
FQBJ-25/8  FQBSJ-25/8
FQBG-25/8  FQBSG-25/8

≥8

≥80

≥20

≤8%H

≤3%H

FQB-25/12  FQBS-25/12
FQBJ-25/12  FQBSJ-25/12
FQBG-25/12  FQBSG-25/12

≥12

≥100

≥25

≤7%H

FQB-25/16  FQBS-25/16
FQBJ-25/16  FQBSJ-25/16
FQBG-25/16  FQBSG-25/16

9.6

72

/

 

 

Orient Power is one of the first suppliers for Chinese electric railway, the first enterprises that obtain the CRCC certificates. A variety of models of composite post insulators from our company have been running on the railway contact network.

 

Relative Articles:

Porcelain insulators,silicone rubber insulators
Outdoor porcelain and polymer insulating material
Composite silicone rubber insulators
Advantages silicone rubber insulators

 

 

 

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