Post Type Porcelain Hollow Core Insulator for Outdoor High Voltage Power Line

• Application: High-voltage, Low-voltage, High-temperature
• Material: Porcelain
• Structure: Pin Insulator
• Type: B Type Insulator
• Usage: High Voltage Power Transmission, Insulation, Driving, Electrical Installation
• Connection Method: Spherical Type
• Model NO.: PS/Psn 25-66kv 3-12.5kn
• Size of Bearing Capacity: 160KN
• Certification: CCC, CE, ISO9001
• Color: Red
• Brand: Hblc
• Product Name: Porcelain Hollow Core Insulator, Ceramic Insulator
• Other Name: Pin Type Insulator, Suspension / Busbar Insulator
• Product Category: Electric Power Fitting, Overhead Line Fitting
• Like Product: Composite Insulator, Glass / Spool Insulator
• Same Product: Polymer Insulator, Bushing Insulator,
• Useful: Construction, Power Engineering
• Product Type: Substation Fitting, Splicing Fitting
• Use: Link Clamps to Insulator, Wire Clamp,
• Use for: Transmission Line Electric Accessories
• Category: Electrical Equipment,
• Class Heading: Power Line Fitting, Pole Line Accessories Hardware
• Classes: Transmission Line Hardware, Connection Fitting,
• Use to: High Voltage Power Transmission
• Related Products: Disc / Stay Insulator, Silicone Rubber Insulator
• Similar Products: Station / Line Post Insulator, Tension Insulator
• Transport Package: Carton, Iron Pallet, Woven Bags, Box, Polybag
• Specification: Customized
• Trademark: LEICHENG
• Origin: China
• HS Code: 7326909000
• Production Capacity: 5000ton/Month

Product Description

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Insulator Product Deacription

The insulator is commonly called as porcelain vase, and it is the insulation part which is used to support the conductors. Insulators can ensure adequate insulation for wires, cross arms, and pole towers. It should be able to withstand the vertical load and horizontal tension of the conductor during operation. It also withstands corrosion from the sun, rain, climate change and chemicals. Therefore, insulators must have both good electrical properties and sufficient mechanical strength. The quality of insulators is very important to the safe operation of lines.
Insulators used in overhead lines commonly include porcelain insulator, pin type insulators, spool insulators, suspension insulators, cross arms insulators, rod insulators and tension insulators.

Classification Of Insulators:

 

1. According to different installation methods, they can be divided into suspension insulators and post insulators.
Suspension Insulator:
It is widely used in the insulation and mechanical fixing of high voltage overhead transmission lines and soft busbars of electric station and substation. Suspension insulators can be divided into disc suspension insulator and rod suspension insulator. Disc suspension insulator is the most widely used insulator for transmission lines
Post Insulator:
Mainly used for insulation and mechanical fixation of busbars and electrical equipment in distribution lines, power plants and substations. In addition, post insulators are often used as components of electrical equipment such as isolating switches and circuit breakers. Post insulators can be divided into pin type post insulators and rod type post insulators. Pin post insulators are mostly used in low-voltage distribution lines and communication lines, while rod post insulators are mostly used in high-voltage substations.



 

2. In accordance with the insulator material, there are porcelain insulators, glass insulators, composite insulators and porcelain composite insulators.
Porcelain insulator:
The insulator is an insulator made of electrical ceramics. Electrical ceramics are baked from quartz, feldspar and clay. The surface of porcelain parts of porcelain insulators is usually covered with enamel to improve its mechanical strength, waterproof infiltration and increase surface smoothness. Among various types of insulators, porcelain insulators are the most commonly used.
Glass insulator:
An Insulators made of tempered glass. Its surface is in a state of compressive prestress. If cracks and electrical breakdown occur, the glass insulator will break into small pieces on its own, which is commonly known as "self-explosion". This feature eliminates the need for "zero value" detection of glass insulators during operation.
Composite insulator:
Also called polymer insulator (Synthetic Insulator).The insulation part is an insulator composed of a fiberglass resin core rod (or core tube) and a sheath and shed made of organic materials.
It is characterized by small size, light weight, high tensile strength and excellent anti-pollution flashover performance. But its anti-aging ability is not as good as that of porcelain and glass insulators. Composite insulators include: rod type suspension insulators, Cross Arm Insulator, post insulators and hollow core insulators (ie composite bushings). Composite bushings can replace porcelain bushings used in a variety of power equipment, such as transformers, lightning arresters, circuit breakers, capacitive bushings and cable terminals. Compared with porcelain sleeves, it not only has the advantages of high mechanical strength, light weight and small dimensional tolerance, but also can avoid damage caused by explosion.
Porcelain composite insulator
An insulator that uses porcelain or glass as the inner insulator, high-temperature vulcanized silicone rubber umbrella material as the outer insulator, and all the porcelain or glass parts are covered.

3. According to the different voltage levels used, they can be divided into low-voltage insulators and high-voltage insulators.
Low-voltage insulators:
refers to insulators used for low-voltage distribution lines and communication lines.
High voltage insulator:
Refers to insulators used in high-voltage and ultra-high-voltage overhead transmission lines and substations. In order to meet the needs of different voltage levels, different numbers of single insulators (pieces) of the same type are usually used to form insulator strings or multi-section insulating pillars.

4. According to the different environmental conditions of use, they are divided into ordinary insulators and  anti-pollution insulator used in polluted areas.
Anti-pollution insulator:
The main measures are to increase or enlarge the insulator shed or ribs to increase the creepage distance of the insulator and improve the electrical strength of the insulator in a dirty state. At the same time, the structural shape of the shed is also changed to reduce the amount of natural dirt accumulation on the surface to improve the anti-pollution flashover performance of the insulator. The specific creepage distance of pollution-resistant insulators is generally 20% to 30% higher than that of ordinary insulators, or even more. Areas with frequent pollution flashovers in China's power grid are accustomed to using pollution-resistant insulators with a double-layer umbrella structure. Such insulators have strong self-cleaning capabilities and are easy to clean manually.

5. According to the carrying capacity, it is divided into multiple grades such as 40kN, 60kN, 70kN, 100kN, 120kN, 160kN, 210kN, 300kN, 400kN, 420kN, 550kN and so on.

6. According to the type of voltage used, AC insulators and DC insulators are divided.
AC insulator:
Mainly refers to disc insulators used in AC transmission.
DC insulator:
Mainly refers to disc insulators used in DC transmission. DC insulators generally have a longer creepage distance than AC pollution-resistant insulators, and their insulating parts have higher volume resistivity (not less than 10Ω·m at 50°C). Their connecting fittings should be equipped with sacrificial materials to prevent electrolytic corrosion. Electrodes (such as zinc sleeves, zinc rings).
 

 

7. According to the insulator used to support wires or ground wires, they are called wire insulators or ground wire insulators respectively.
Wire insulator:
Insulators are used to support or suspend conductors to keep them insulated from towers and the earth.
Ground wire insulator:
Insulators for insulation and support of overhead earth wires. Ground wire insulators usually consist of two parts: an insulator component and a discharge gap. The discharge gap consists of electrodes fixed on the insulator through bolts.

8. According to the connection method, there are two types: ball type and groove type.

9. Various special-purpose insulators, such as insulating cross arms, semiconductor glazed insulators, tensioning insulators for power distribution, bobbin insulators and wiring insulators, etc.

 

Porcelain Insulator

Technical parameters and Drawing

 

Fig No.			1	1	2	3	4	5	5
BS Class			P-11-Y	P-15-Y	P-22-Y	P-33-Y	PW-15-Y	PW-22-Y	PW-33-Y
Creepage Distance, mm			254	298	432	630	432	673	900
Dry Arcing Distance, mm			102	133	200	360	197	267	149
Dimensions, mm	H - Height		130	137	165	244	185	255	249
	h- Depth of Thread		140	152	229	280	170	205	225
	D-Diameter		48	48	52.6	52.6	52.6	52.6	52.6
	d- Pin Diameter		18.3	18.3	27.8	27.8	27.8	27.8	27.8
	R1-Saddle Groove Radius		13	13	19	11	16	16	16
	R2-Wire Grooves Radius		9.5	11	14.3	13	16	16	16
Cantilever strength-kN			11	11	11	13	11	11	12
Min Flashover Voltage	Power Frequency	Dry, kV	75	80	100	135	100	125	135
		Wet, kV	50	55	60	95	65	95	95
	Critical Impulse	Pos., kV	115	130	160	180	150	190	200
		Neg., kV	150	175	205	290	190	235	240
Withstand Voltage	One Minute Power Frequency	Dry, kV	65	70	90	110	90	110	125
		Wet, kV	40	50	55	75	60	90	90
Impulse Withstand Voltage, Kv			90	110	150	170	140	180	200
Radio Influence Voltage	Test Voltage to Ground/KV		15	15	22	30	22	30	33
	Max. RIV at 1MHz/uV		8000	8000	12000	16000	12000	16000	20000
Power Frequency Puncture Voltage, kV			150	150	145	210	150	199	210

Basic Data

Type	Nominal voltage(kV)	Power frequency voltage(kV)		Puncture voltage(kV)
		Day flashover	Wet flashover
D10K45	10	70	42	110
D10K46	15	75	53	120
D10K47	20	90	65	140
D10K48	30	110	90	140

 

Type		D10K45	D10K46	D10K47	D10K48
Fig. NO		1	1	1	1
Nominal Voltage (kV)		10	15	20	30
Main Dimebsions (mm)	H	138	158	185	250
	h	55	60	32	90
	D	135	150	175	230
	d	62	72	82	92
	d1	31	31	35	43
	R	12.5	12.5	12.5	12.5
Weight (kg)		1.6	2.7	3.8	6.5
Power Frequency Voltage(kV)	Dry Flashover	70	75	90	110
	Wet Flashover	42	53	65	90
Puncture Voltage (kV)		110	120	140	140
50% Impulse Withstand Voltage (kV)		100	110	130	180
Minimum Breaking Load (kg)		1250	1250	1500	1500
No. Used Before		P-1-D	P-1-D	P-2-D	P-3-D

 

Material:	Porcelain
Rated Voltage:	10KV-30KV
Application:	High Voltage
Tensile Strength:	5kN/10kN

Porcelain post insulators for high-voltage lines A line post insulator is a steel insulator consisting of one or more insulators permanently glued on a metal base, sometimes with a cap, and can be double mounted on a metal base. The head bolt or one or several bolts are rigidly mounted on the supporting structure. It is used for insulating and supporting wires in AC power lines with a nominal voltage higher than 1000V, a frequency not higher than 100Hz, and an altitude not higher than 1000m. between 40°C. Line (solid) post insulators can replace pin insulators. Pin insulators are B-type insulators, which are prone to breakdown and damage during operation. Toughened glass insulators will self-destruct at this time, while porcelain insulators will not. Therefore, the electric industry department will spend a lot of manpower and material resources to conduct electrical inspection and preventive tests on porcelain insulators, which has certain shortcomings in terms of economy and safe power supply. Therefore, with the development of manufacturing technology, line (solid) post insulators appeared. This insulator has a solid insulator and is a type A insulator, so there is no need to worry about breakdown along the interior of the insulator during operation, which is a major advantage of it.
Line pillar porcelain insulators are divided into eight grades of 95, 105, 125, 150, 170, 200, 250 and 325kV according to the rated lightning impulse withstand voltage value; according to the rated bending failure load value, they are divided into 3, 5, 8 and 12.5kN Four grades; according to the installation method, it is divided into two types: vertical installation and horizontal installation; according to the connection method with high-voltage wires, it is divided into two types: top binding type and top clamp type; according to the connection method between the steel foot and the base, it is divided into detachable Type (threaded connection) and inseparable type two.
Model description:
PS--line post type porcelain insulator;
J--clamp type, binding type is not indicated;
N-longer creepage distance (normal creepage distance is not indicated);
the number after "-" means lightning full wave Impulse withstand voltage value, kV;
The number after "/" is the bending failure load value, kN;
Z-upright installation, horizontal installation is not indicated;
S-threaded connection.
GB/T 21206-2007 standard stipulates:
R--line post insulator;
The number after R indicates the bending failure load value, kN;
the subsequent letter E or J indicates the outer or inner plastic installation of the metal accessory; the subsequent
letters T, C, and H indicate the top binding type and vertically installed top clamp respectively type or top clamp type installed horizontally;
the suffix number indicates the specified lightning impulse withstand voltage value, peak kV.

 

Technical parameters

Product features

1. The insulator machine has high strength, low dispersion, safe and precise operation.
2. The low-temperature machine performance of the insulator is good.
3. Excellent stain resistance.
4. High seismic performance.
5. Low radio interference.

Product details

Products real shot

Product manufacturing process

 

Fields of application

Product application

 

Work Environment

Hebei Leicheng Electric Power Technology Co., Ltd. is a professional engaged in power transformers, high and low voltage switchgear and related products R & D, production, sales and service of science and technology enterprises.

Since its establishment, the company has been committed to the road of professional development. With strong technical force, advanced equipment at home and abroad, innovative concept and rich manufacturing experience, has passed ISO9000 certification, the use of CAD, to provide customers with suitable regional characteristics of environmental protection, energy saving, low-carbon, high-quality products to meet the basic requirements of the market and different customers. Products are also exported to Central Asia, Africa, Southeast Asia, the Middle East, South America and other countries and regions.

At present, the company mainly produces high voltage/low voltage distribution cabinets, prefabricated substations, distribution transformers, high voltage/low voltage switches and other products.

Various power fittings and accessories, such as transformer support frame, cable hoop, bolt, wire clamp, cross arm and other products are numerous. 

Steel products, such as H-shaped steel, channel steel, steel pipe, Angle steel, hot dip galvanized iron wire, etc., are also our main products!

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Packaging & Shipping

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FAQ

Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.

Q: What's your warranty terms?
A: We offer 12 months warranty time.

Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.

Q: What's your payment terms?
A: Pay by T/T and  L/C is acceptable.

Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has  3C  certificate. If you need any other Certificate, we can help you to apply it.

Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.

 Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".

Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.

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