Porcelain Throuhg Wall Bushing

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
Serial number	Model	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
Serial number	Model	L	11	12	13	14	B	d1	d2	a1	a2	a3	b1	b2		Kg	＜	Outdoor terminal nominal creepage distancemm
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
Serial number	Model	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

WE ARE HERE TO SUPPORT YOU!

Further information or a personal consultation? Our products and know-how are there to provide solutions.