Porcelain Throuhg Wall Bushing
Porcelain Throuhg Wall Bushing

Porcelain Throuhg Wall Bushing

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Specifications

Porcelain Throuhg Wall Bushing

Porcelain ThrouhgWallBushing

◆Use and classification

The wall bushing is suitable for the frequency AC voltage of 35kV and about the power plant, substation power distribution device and high voltage electrical appliances. Make point parts through the walls or other knot fifth insulation and support. Casing for ambient temperature -40 ° C to 40 ° C is not suitable for use in areas where the primary casing is partially exposed to surface under conditions sufficient to reduce casing performance.

When the casing ambient temperature is higher than +40 ℃, but not more than +60 ℃, the working current of the casing is recommended to reduce the rated current load by 1.8 ℃ for every 1 ℃ ambient temperature.

When the casing in the ambient temperature above +40 ℃ level load GB12944.1 Article 5.1 of the maximum allowable heating temperature in the case of use is to allow its working current length overload, it is recommended by ambient temperature for every 1 ℃, rated current Load increased by 0.5%, but the added value should not be greater than 20% of rated current,

Casing can not be divided into: indoor ordinary type, outdoor – outdoor ordinary type, outdoor – indoor stain resistance, outdoor – indoor plateau type, outdoor – indoor plateau resistant type five types.

◆ Indoor and outdoor wall casing use manual

Outdoor version of a common version of the installation site for elevation of not more than 1000m area, but the installation site should be no obvious pollution areas.

Outdoor – Indoor stain resistance is applicable to contaminated areas where the installation site does not exceed 1000m above sea level. For serious and special dirty area with 35kV casing, optional 63kV oil and paper capacitors through the wall casing.

Outdoor – Indoor Highland Type Suitable for installation areas below 3000m above sea level.

Outdoor – indoor plateau stain resistance for the installation site elevation of 3000m below the dirty areas.

Casing according to the use of conductive materials can be divided into aluminum conductors, steel conductors and non-conductor (bus type) of the three types. Rated current 1500A and below the steel conductor through the wall casing for the transition products, the main dimensions and characteristics according to GB12944,2 Appendix B requirements.

Its model letter B indicates the intensity level is 7500N. The bending strength grades of the other types of bushings are classified as follows, and the current used by the busbar wall bushing determines the size of the bus used by the user.

◆ Model Description

CL indoor aluminum conductor wall bushing CLB indoor aluminum conductor wall bushing (reinforced)

C indoor copper conductor wall bushing. CWL outdoor – outdoor aluminum conductor wall bushing

CWLB Outdoor – Indoor Aluminum Conductor Wall Casing (Reinforced) CW Outdoor – Indoor Copper Conductor Wall Casing

CWWL outdoor – indoor stain resistant aluminum conductor wall bushing CWW outdoor – indoor stain resistance copper conductor wall bushing

CM indoor busbar wall casing CMWW outdoor – indoor stained copper conductor wall bushing

The number after the letter is the design sequence number

For with a conductor sleeve. After the short cross-section, the numerator is the rated voltage of the casing, the Q is marked by the large distance; the denominator is the rated current amperage of the casing; the second short after horizontal is the pollution grade number; the third short- Marked high plateau.

On the busbar casing, the first short after the letter after the number of rated voltage kilovolt number; the second short after the number of cased porcelain sleeve diameter diameter mm; the third short after the figures for the pollution level number The

◆ Indoor and outdoor wall casing use manual

Example: Model CWWL-35 / 630-3

Department of 35kV voltage, 630A current, outdoor – indoor corrosion-resistant aluminum conductor through the wall casing, for three sewage area.

Example: Model CWWL-35 / 630-1-G

Department of 35kV voltage, 630A voltage, outdoor – indoor plateau stain resistance aluminum conductor through the wall casing, apply to a sewage area.

Example: Model CWWB-35Q / 630

Department of 35kV voltage, 630A current, large distance from the copper conductor through the wall casing.

Composite dry wall bushing

I plant has developed a new type of wall bushing, with a small size, light weight, pollution and anti-riot performance and so on. 10kV current

Serial number Model Main dimensions(mm) weight Bending failure load Outdoor terminal nominal creepage
L 11 12 13 14 B d1 d2 a1 a2 a3 b b1 Kg
distance
mm
1 CWW-12/250 520 360 158 10 75 115 2-Φ14 2-Φ11 175 30 15 30 4 6.2 400 230
2 CWW-10/400 520 360 158 10 75 115 2-Φ14 2-Φ11 175 30 15 40 5 6.3 400 230
3 CWW-10/630 560 360 158 10 75 115 2-Φ14 2-Φ13 175 40 20 40 8 6.5 400 230
4 CWW-10/1000 520 360 158 10 75 150 4-Φ14 4-Φ14 150 30 15 60 10 9.5 400 230
5 CWW-10/1500 520 360 158 10 75 150 4-Φ14 4-Φ14 150 30 15 60 8 10 9.5 400 230
6 CWW-10/2000 600 365 158 14 115 200 4-Φ14 4-Φ18 200 40 25 80 8 10 23 8000 230
7 CWW-10/2500 600 365 158 14 115 200 4-Φ14 4-Φ18 200 40 25 80 10 10 25 8000 230
8 CWW-10/3150 600 365 158 14 115 200 4-Φ14 4-Φ18 200 50 25 100 10 10 29 8000 230
9 CWW-10/4000 600 365 158 14 115 200 4-Φ14 4-Φ18 200 40 25 100 12 10 45 16000 260
10 CWW-10/5000 600 365 158 14 115 200 4-Φ14 4-Φ18 200 50 25 100 10 10 60 16000 260
11 CWW-10/6300 670 388 165 18 135 280 4-Φ18 4-Φ18 260 50 25 100 10 10 65 16000 260
12 CWW-10/8000 670 388 165 18 135 280 4-Φ18 4-Φ18 260 60 30 120 10 10 65 16000 260

 

Serial number Model Main dimensions (mm) weight Bending failure load Outdoor terminal nominal creepage

distancemm

L 11 12 13 14 B d1 d2 a1 a2 a3 b1 b2 Kg
1 CWL-35/250 980 815 372 16 75 225 4-Φ15 2-Φ11 200 30 15 30 4 32 525 7500
2 CWL-35/400 980 815 372 16 75 225 4-Φ15 2-Φ11 200 30 15 40 4 34 525 7500
3 CWL-35/630 1020 815 372 16 95 225 4-Φ15 2-Φ13 200 40 20 40 8 35 525 7500
4 CWL-35/1000 980 815 372 16 75 225 4-Φ15 4-Φ14 200 30 15 60 10 39 525 7500
5 CWL-35/1500 980 815 372 16 75 245 4-Φ15 4-Φ14 220 30 15 60 8 10 42 525 7500
6 CWL-35/2000 980 815 372 16 75 245 4-Φ15 4-Φ14 220 30 15 80 8 10 47 525 7500
7 CWL-35/2500 1100 850 433 16 100 250 4-Φ15 4-Φ14 220 30 20 80 10 10 50 525 7500
8 CWL-35/3150 1100 850 433 16 100 250 4-Φ15 4-Φ14 220 40 20 80 12 12 55 525 7500
9 CWL-35/4000 1100 850 433 16 100 250 4-Φ15 4-Φ14 220 40 20 80 10 10 60 525 7500

 

 

Serial number Model Main dimensions (mm) weight Bending failure load Outdoor terminal nominal creepage

The distance mm

Outdoor terminal nominal creepage

The distance mm

L 11 12 13 14 B d1 d2 a1 a2 a3 b1 b2 Kg
1 CWW-20/2000 835 590 255 14 115 250 4-Φ15 4-Φ18 220 40 25 80 8 10 48 400 8000
2 CWW-20/2500 835 590 255 14 115 250 4-Φ15 4-Φ18 220 40 25 80 10 10 49 400 8000
3 CWW-20/3150 835 590 255 14 115 250 4-Φ15 4-Φ18 220 50 25 100 10 10 52 400 8000
4 CWW-20/4000 835 590 255 14 115 250 4-Φ15 4-Φ18 220 50 25 100 12 10 60 400 8000
5 CWW-20/5000 835 590 255 14 115 250 4-Φ15 4-Φ18 220 50 25 100 10 10 70 400 8000

 

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    Porcelain Throuhg Wall Bushing