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Composite insulators for transformer
Composite insulators for transformer

Type:HD-25/70-QT-1; Rated voltage:25KV; Specified mechanical bending load:120 KN;

Composite insulators for traction transformer substation

It is produced by superior performance of silicone rubber materials, high strength glass-lined steel pipe, and with a special process to become whole, and has excellent electrical insulation properties and the restoration of insulation performance, excellent performance and anti-pollution properties , also an outstanding performance and avoid unexploded hydrophobic properties.It also has high strength, light weight, easy of installation and maintenance.

Purchase notice:1 The specifications and pattern of the bothside fitting2 The main dimension and rate voltage3 The colour of silicon rubber ,usually it is red or gray4 Other particular requirement

Note: 1 IEC,ANSI,GB and other international stardand is applicable2 it is usually red,gray and white.3 we can design and produce according to the drawings and characteristics

General dimension and characteristics of 25kv composite insulator for traction transformer substation

 

 

No.

Fig.

Type

Rated voltage

KV

Specified mechanical

bending load

KN

 

Section height

H, mm

Min

arcing  distance

h, mm

Large

shed

diameter

D, mm

Small

shed diameter

d, mm

 

Shed spacing

B, mm

Min nominal creepage distance

L, mm

Lighting impulse withstand voltage

Dry power frequency voltage

Wet

power frequency voltage

 

 

Weight kg

1

45

HD-25/70-QT-1

25

120

620±5

450

128

98

117

1200

300

180

150

2.8

2

45

HD-25/70-QT-2

25

120

740±5

570

128

98

117

1600

360

210

180

3.2

Composite insulators for transformer

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