DC Disk Suspension Type Glass Insulator

DC Disk Suspension Type Glass Insulator

★ Aging resistance
★ Strence soiling
★ Superior electrial function, metchnical capability
★ High and low tempreture resistance

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We are focused on  electric industry for years, with rich experience in glass insulator and overhead line fittings. Our main products including: toughened glass insulator, helical line products, overhead line fittings, etc.  All products can meet 10-800 KV voltage line's requirements; maximum tension strength is more than 550KN. We have successfully supplied products for more than 100 projects at home and abroad, our clients located in many different countries. Zhengzhou Cathay will be your reliable partners.


insulator overview


Product name:DC Disk Suspension Type Glass Insulator

Place of origin:China                         Material: glass

Size: Customized size                           Radio Interference Voltage(µV): ≤50

Corona Test(pin&cap)(kV): 18/22    Power Frequency Electric Arc Test: 0.12S/20kA 

DC Corona Test(pin&cap): ≧50          Impulse Withstand Voltage(p.u.): 2.8


insulator parameters


The Parameters of DC Toughened Glass Suspension Insulator (GB & IEC)

IEC Type

Drawing Number

Diameter D

Spacing H

Creepage Distance L

Size of Coupling

Mechanical Failing Load

Mechanical Routine Test

Anodic DC Dry Withstand Voltage

Anodic DC Wet Withstand Voltage

Lighting Impulse Withstand Voltage

SF6 Puncture Withstand Voltage

Net Weight Per Unit

U160BP/170H

7

320

170

550

20

160

80

150

65

140

225

9.7

U210BP/170H

7

320

170

550

20

210

105

150

65

140

225

10.2

U240BP/170H

7

320

170

550

24

240

120

150

65

140

225

10.5

U300BP1/195H

7

390

195

710

24

300

150

150

65

140

225

15.4

U300BP/195H

7

380

195

635

24

300

150

170

75

155

255

16.0

U420BP/205H

8

360

205

550

28

420

210

150

65

140

225

14.6

U420BP1/205H

8

380

205

620

28

420

210

160

70

150

240

18.9

U550BP/240H

8

380

240

650

32

550

275

160

70

150

240

19.1

U550BP1/240H

8

380

240

710

32

550

275

160

70

150

240

22.0

U840BP/300H

8

420

300

710

40

840

420

170

75

155

240

24.5


insulator features.png



glass insulator

1、Excellent electrical performances

The electrical breakdown strength of glass medium under the standard shock wave is 1350~1700 kV / cm. At home and abroad, a lot of shock waves have been tested steeped by the wave head at home and abroad. The results are atmospheric flashover, and the vitreous body is not broken through. The operation experience also proves that the DC disk suspension type glass insulator will not be penetrated by the lightning.

2、Uniform voltage distribution

Because of the large dielectric constant of glass, the DC disk suspension type glass insulator has a larger main capacitance and the distribution of the voltage is more uniform, thus reducing the radio interference, reducing the corona loss, prolonging the life of the glass insulator and increasing the flashover voltage of the glass insulator.

glass insulator



3、Good anti-aging properties

When the glass is tempered, the compressive stress is formed on the surface. If there is a crack on the surface of the glass, it will also compress the micro crack without expanding it. The electrical strength of glass remains unchanged throughout the operation.

4、 Nice dirty resistance

DC disk suspension type glass insulator has high cleanliness, low adhesion and easy cleaning.


insulator-FAQ


1.  What's your advantage?

We focus on providing high-quality power fittings for many years, and will give you the most suitable price and comfortable after-sales service.

2.  What's the payment term?

T/T or L/C at sight.

3.  How's the delivery time?

Generally, it will take 20 to 40 days after receiving your advance payment. The specific delivery time depends on the products and the quantity of your order.

4.  Can I have some samples?

Few pcs of product's samples are available, but the freight should be collected.

5.  What's the standard of package?

We usually pack our goods in cartons or pallets. We can also pack them according to your special requirements.

6.  How about the transport?

If the number of goods is small we usually use DHL and some express you offered. If the number of the goods is big usually by sea or by air.

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