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Composite Substation Post Insulator 33kv Electrical Silicone Insulators

Minimum Order Quantity : Negotiation Price : Negotiation
Packaging Details : Standard National Packing Method Delivery Time : Depends on the quality of client
Payment Terms : 30% advanced payment , 70% balance payment before shipment. Supply Ability : 2000 Ton per Month
Place of Origin: China Brand Name: DINGLI
Certification: ISO9001,ASTM, Model Number: Insulator

Detail Information

Material: Composite Polymer, Silicone Rubber Insulator Type: Insulator
Model Number:: U120B/146 Certification: ISO9001/CE/ROHS
Usage: Insulation Protection OEM/ODM: Available
Supply Ability: 50000 Piece/Pieces Per Month Color: Gray Insulator
High Light:

post type insulator


high voltage insulators

Product Description

Composite Substation Post Insulator 33kv Electrical Silicone Insulators

Quick Detail: 

METO 33KV Electrical Silicone Insulators composite station post insulator


Introduction composite insulator is consist of insulation core, slilicon rubber sheds and end fittings at both terminals.
As the main structure, insulation core is made of epoxy resin, supporting housing, inside insulation and end fittings at both ends and withstanding mechanical load. The core has good tension strength usually over 600Mpa, which is 2 times than ordinary steel,5 to 8 times than ceramic material, at the same time, the core has good performance at dielectric property, erosion resistance, bending fatigue resistance, creepage resistance and impulse resistance. Silicon rubber sheds mainly protect the core, shield rain and snow, and widen the creepage distance and outside distance.
It's made of high molecular polymer silicon rubber, with fire retardant, inhibitor and coupling agent as auxiliaries, the high temperature and pressure vuicanized process provides good hydrophobicity, migratory aptitude, erosion resistance, aging resistance and electric insulation properties. When flashover occurs, it performs good at fracture resistance, distributing voltage averagely and has 2 times electric voltage than ceramic insulator at the same flashover situation.
Composite insulators provide by us is made of reinforced steel end fittings with maze design, multilayer protection and good sealing, which have solved the main problem of insulator that is interface electric puncture. Connection of core and fittings uses the most advanced coaxial constant pressure crimping technology, assisted by automatic sound control damage inspection system, assuring the reliability and stability of core and fittings connection. Using ERC high temperature acid-resist bar, surface of the core and silicon rubber is applied with specified coupling agent. The high temperature and pressure disposable molding inspection technology confirms all technical regulations meet domestic and international standards, making the housing and sheds the newest generation insulator unit in high voltage transmission line.

Product Range:

Composite Substation Post Insulator 33kv Electrical Silicone Insulators 0

Composite Substation Post Insulator 33kv Electrical Silicone Insulators 1


Composite Pin Type Insulator: 


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Composite Cross-arm Insulator


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Composite Station Post Insulator


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Working Conditions
★ Environment temperature:-40℃~+40℃
* Alternate current frequency no more than 100Hz
★ Earthquake under 8 level
* Altitude no more than 1500m
* Max wind speed no more than 35M/s
Property Charaeteristies
★ Small size, light weight equals to weight of same voltage level porcelain insulator 1/5-1/9, which makes it convenient to transport and install.
★ Composite insulator has strong mechanical strength, reliable structure, stable properties, long safe running span life, which served a guarantee for line's safe working
★ Composite insulator has excellent electric properties, sheds made of silicon rubber is good at hydrophobic, transference resistance, pollution resistance and pollution flashover resistance, which makes it perform well in heavy pollution areas without human cleaning and maintenance required.
* Composite is good at acid resistance, alkalinity resistance, thermal aging resistance and electric resistance, good sealing protects itsinside insulation from moisture.
* Composite insulator has good fracture resistance and earthquake resistance, no fracture acidents occur during working time.
★ Composite insulator is exchangeable with porcelain insulator.


1. Specific packaging can be made to order.

You can specify other shipping methods such as Airmail, FEDEX or DHL. We shall let you know about the shipping cost after receipt of your order.And also can send by sea or air, kindly send me the port of yours.

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1. About us

HENAN DINGLI was founded in 1963 as a small electric power equipment manufacturer, after more than 50 years’development, DINGLI now is group company dedicated on total solutions for electricity projects covering survey, design, manufacture, complete equipment supply, construction, operations, maintenance, investment and so on. HENAN DINGLI actively devote to power grid construction, participated in all UHV construction projects and made an outstanding contribution to UHV transmission lines of China.

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Since 2000, HENAN DINGLI has been actively developing international business, successively built Ecuador, Cambodia manufacturing Base, Quito tower design center, Spain, Peru, Chile and other overseas service centers. We have got a number of international certificates, such as ISO certificate covering design, equipment and construction, AWS welding certificate, ASTM system certificate, Chile NCH 203 certificate, Colombia RETIE certificate, Costa Rica material quality Certificate, etc. By the end of 2018, the overall proportion of international business is more than 30% of the company's main revenue. We have provided high-quality products and services to more than 100 customers in 33 countries, including the markets of Europe, America, Africa and Southeast Asia. With strong technical support and on-site service capability, HENAN DINGLI has saved a lot of project costs for customers and won their recognition.

2. International Certificate

ASTM,RETIE,Nch203,Costa Rica ASTM,EPC,TCL,ect.

3. After-Sale Service

Technical Support

Technical support on pre-sales stage. DINGLI has own survey and engineering company with more than 100 engineers. We have special pre-sales engineer to work with customer at early stage of the project.

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Site assistance

Site assistance in Latin American market, so far we have sales and service center in Spain, Chile, Bolivia, Peru, Ecuador, Senegal, which will make a fast response for customer.

Warehouse and Emergency Supply

Warehouse and emergency supply for spare parts, damage parts and missing parts: DINGLI has built production line in Quito and warehouse for transmission line and distribution network in Ecuador, Bolivia and Senegal with common use spare parts.

Design and Consultant

Supported by both domestic engineering company and Quito tower design center, could provide technical consultant and design service within our scope of work. For Quito tower design center, most of the engineers are local staffs. The Design is based on ASTM protocols meantime with GB material standard, which will reduce the weight, and avoid the replacement on the profiles to save the working time.



Set-wisely packing or member-wisely packing as per client's requirements.

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 Global-network map


Henan DINGLI Pole and Tower Co., ltd.

Henan Zhongdingxin Detection Technology Co.,ltd.

Henan Dadi Electricity Engineering Co.,ltd.

Henan DINGLI Power Equipment Co.,ltd

Henan DINGLI Power Construction Co., ltd

Huading Concrete Pole Co., Ltd

Xingjiang Huili Steel Tower Co., Ltd.

Bazhou Dingli Tower Co., Ltd.

Shanghai Sales and Service Center

Beijing Sales and Service Center


Cambodia Phnom Penh Factory


Madrid (Spain) Sales and Service Center

Dakar, Senegal

Senegal (Dakar) Sales and Service Center

Senegal (Dakar) Spare Part Warehouse

Quito, Ecuador

Quito (Ecuador) Steel Tower Design Center (ASTM Standard)

Quito (Ecuador) Steel Tower Emergency Production Line

Quito (Ecuador) Raw Material and Spare Part Warehouse

Lima, Peru

Lima (Peru) Sales and Service Center

Cochabamba, Bolivia

Cochabamba (Bolivia) Raw Material and Spare Part Warehouse

Santiago, Chile

Santiago (Chile) Sales and Service Center

Jakarta, Indonesia

Jakarta (Indonesia) Sales and Service Center

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Customer Visit

Clients of Bolivia visited Dingli for factory inspection, we talked about the key issues faced right now, and found ways to solve it together. They set a high value on this cooperation.


Customers and Partners of Dingli

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