Porcelain insulators come in various shapes and sizes depending on their application, such as pin insulators, suspension insulators, or post insulators. They feature multiple grooves or flanges to attach the conductors securely and a smooth, glazed surface that resists dirt and water accumulation. Porcelain insulators are widely used in the construction of transmission lines, substations, transformers, surge arresters, and other electrical equipment that requires reliable insulation.





Class ANSI | Cleepage Distrance | Dry Arcing Distance | Cantilever Strenth | Low frequency Dry Flashover Voltage | Critical impulse Flashover positive | Power Frequency puncture Voltage KV | Test Voltage to ground kV | Number in Standard Package |
56-1 | 102 | 57 | 13 | 70 | 70 | 50 | 5 | 80 |
56-127 | 127 | 58 | 11 | 85 | 85 | 70 | 5 | 40 |
Acceptable according to your drawings and sample. We can strictly produce according to ASTM,BS,Din Etc
Beijing Winner Electric Energy Co., Ltd. was established in 2024 and is located in the key international business district of the Headquarters Base in Fengtai District, Beijing. Relying on two production-oriented enterprises, Hebei Sanli Electronic Equipment Manufacturing Co., Ltd. and Wenzhou Sizhuang Power Equipment Co., Ltd., Winner Power is a transmission and distribution service provider that integrates scientific research, manufacturing, trade, and services. The products cover power fittings, cable accessories, insulators, copper aluminum materials and other transmission and distribution materials, as well as primary and secondary fusion pole mounted circuit breakers, isolation switches, fuses, lightning arresters, solar energy and new energy transmission and distribution equipment products.


1. Are you a factory or trading company?
We are a Trade company.
2. Where is your factory located? How can I visit there?
Our factory is located in Handan City,Hebei Province, China.
All our clients,from home or abroad, are warmly welcome to visit us!
3. What's the payment term?
We accept TT, 30% deposit and 70% balance agaisnt copy of BL, Western Union, L/C is OK!
4. How's the delivery time?
Usually it will take about 15~30 days for production.
5. Tell me the standard of package?
For the small capacity, it uses carton with pallet or according to your requirements.
6. Could you offer Form A or C/O etc. certificate of origin ?
It is totally not a problem.
7. Would you accept to use our logo ?
If you have a good quantity,it is absolutely no problem to do OEM.
8. How about the transport?
If the number of goods is small we usually use TNT,DHL,FEDEX,EMS and some express you offered.
If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.