ANSI Glass Insulator for AC Systems

ANSI Glass Insulator for AC Systems

★ Large main capacitance and uniform voltage distribution
★ Excellent anti-icing performance
★ Low spontaneous detonation rate for product annual operation

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ANSI glass insulator for AC systems, high voltage insulator, glass insulators The toughened glass insulator are used on high voltage, ultra-high voltage AC and DC transmission line to insulate and hang wire.


insulator overview


Prouduct name: Glass Insulator for Electrified Railway Catenary

Place of origin:China                                Material: glass

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

Impulse Withstand Voltage(p.u.): 2.8     Min Power Frequency Puncture Voltage(kV): 130



insulator parameters


The Parameters for ANSI Specifications of A/C Toughened Glass Suspension Insulator

IEC Type

Diameter D

Spacing H

Creepage Distance L

Grade of ANS

Size of Ball Socket

Mechanical and Electrical Strength

Mechanical Routine Test

Mechanical Impact Strength

Power Frequency Withstand Voltage (DRY)

Power Frequency Withstand Voltage (WET)

Critical Impulse Flashover Voltage

Net Weight Per Unit

mm

inches

mm

inches

mm

inches

kN

lbs

kN

lbs

N-m

inch-pounds

(kV)

(kV)

U70B/146A

255

10

146

5-3/4

320

12-5/8

52-5

B

70

15000

35

7500

6.0

55

80

50

125

130

4.0

U100B/146A

255

10

146

5-3/4

320

12-5/8


B

100

22000

50

11000

6.0

55

80

50

125

130

4.0

U120B/146A

255

10

146

5-3/4

320

12-5/8

52-5

J

120

25000

60

12500

7.0

60

80

50

125

130

4.0

U160B/146A

280

11

146

5-3/4

400

15-3/4

52-8

K

160

36000

80

18000

10

90

85

55

130

135

7.0

U210B/156A

280

11

156

6-1/8

400

15-3/4

52-11

K

220

50000

110

25000

10

90

85

55

140

140

7.0


insulator features


ANSI technical parameters of glass insulator of ANSI for AC system

 ■Large main capacitance and uniform voltage distribution 

Dielectric constant of glass is kept between 7 and 8 to make the main capacitance of ANSI Glass Insulator for AC Systems maintained at a relatively high level and uniformly distribute voltage to lower the voltage withstood by the insulators on the wire side and ground site, weaken the radio interference impact, reduce the corona loss and lengthen the service life of glass insulators.


 ■Excellent anti-icing performance 

There is no abnormal circumstances occurred to glass insulators on transmission lines which were caused by conductor icing and collision with each other. The toughened glass has high shock strength because the toughened internal stress protective layer is on the glass surface of the ANSI Glass Insulator for AC Systems. AC/DC aerodynamic type products inside insulator sting on transmission line adopt interval use to effectively prevent ice bridging and ice flashover from occurring.

ANSI glass insulator for AC system




 ■Low spontaneous detonation rate for product annual operation 

The spontaneous detonation of the glass insulator in line operation pertains to early exposure. It generally happens in the first one to three years(spontaneous detonation peak period), later on shows a tendency to gradually decline and then stabilizes at a certain level, which increases the reliability of safe operation of the line.

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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