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72.5-252 kV Outdoor Rod Post Porcelain Insulator

72.5-252 kV outdoor solid rod post insulator is suitable for outdoor power stations, substations and electrical equipment of AC power system with frequency not more than 100 Hz, and can be used for insulation and support of live parts.

The insulator should be installed in a place with ambient temperature from -40¡ãC to +40¡ãC and altitude not more than 1,000 m. 

The insulator can be divided into two categories: ordinary type and pollution-resistant type, in which the pollution-resistant type can be applied to medium, heavy and extra-heavy pollution areas.

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Main dimensions and properties

Model

Drawing No.

Rated voltage

kV

Main dimensions      mm

Creep distance

mm

Dry withstand voltage under lightning full-wave impulse withstand voltage

kV

Power frequency dry withstand voltage

kV

Power frequency wet withstand voltage

kV

Bending strength

kN

Torsional load

kN.m

Weight

kg

H

D

a1

d1

a2

d2

ZS-72.5/8

1

72.5

710

220

140

4¡ÁM12

225

4¡Á¦µ18

1100

300

160

120

8

1

38

ZSW-72.5/6

2

72.5

870

235

140

4¡ÁM12

210

4¡Á¦µ18

2205

300

160

120

6

1

40

ZSW-72.5/10

2

72.5

870

260

140

4¡ÁM12

225

4¡Á¦µ18

2140

325

175

140

10

4

46

ZSW-72.5/12.5

2

72.5

760

245

140

4¡ÁM12

225

4¡Á¦µ18

1813

300

160

120

12.5

1

50

ZSW-72.5/16

2

72.5

870

255

140

4¡ÁM12

225

4¡Á¦µ18

2240

325

175

140

16

1

62

ZS-126/4

1

126

1060

210

140

4¡ÁM12

225

4¡Á¦µ18

2016

450

215

185

4

2

60

ZSW-126/4

2

126

1060

246

140

4¡ÁM12

225

4¡Á¦µ18

2750

450

215

185

4

2

68

ZSW-126/6

2

126

1170

222

140

4¡ÁM12

225

4¡Á¦µ18

2750

460

225

190

6

3.5

70

ZSW-126/8

2

126

1200

222

127

4¡ÁM16

286

6¡Á¦µ18

2750

465

230

200

8.5

4

85

ZSW-252/8

3

252

2400

278

140

4¡ÁM12

286

6¡Á¦µ18

6300

1050

520

460

8

4

200

ZSW-252/10

3

252

2400

289

127

4¡ÁM16

286

6¡Á¦µ18

6300

1050

520

460

10

6

225

Model description: ZS refers to outdoor solid rod post porcelain insulator; ZSW refers to pollution-resistant outdoor solid rod post porcelain insulator.  For the fraction after the dash, the numerator refers to the rated voltage and the denominator refers to bending failure load.

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