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Home > Products > Porcelain Insulator > Pin Insulator > Porcelain Pin Insulator 56-4
Porcelain Pin Insulator 56-4
Porcelain Pin Insulator 56-4
Porcelain Pin Insulator 56-4
  • Porcelain Pin Insulator 56-4
  • Porcelain Pin Insulator 56-4
  • Porcelain Pin Insulator 56-4

Porcelain Pin Insulator 56-4

    Payment Type: L/C,T/T
    Incoterm: FOB,CFR,CIF
    Min. Order: 1000 Piece/Pieces
    Delivery Time: 30 Days

Basic Info

Model No.: 56-4

Application: High-voltage, High-temperature

Material: Porcelain

Structure: Pin Insulator

Usage: High Voltage Power Transmission

Connection Method: Trough Type

Certification: SGS, ISO9001

Color: Brown

Type: A Type Insulator

Additional Info

Packaging: Carton, Wooden case, Sack

Transportation: Ocean,Land

Place of Origin: Fuzhou, China

HS Code: 85462090


Product Description

Porcelain Pin Insulator 56-4

The destructive discharge along the insulation surface is called flashover. Flashover characteristic is the main electrical property of electrical pin insulators. For different voltage levels, voltage of pin insulator is different, the withstand voltage requirements of ht pin insulator are different, including dry power frequency withstand voltage, wet withstand voltage, lightning shock withstand voltage, lightning shock cut-off withstand voltage, operation shock withstand voltage, etc.To avoid breakdown in operation, the breakdown voltage of the insulator is higher than the flashover voltage.
In the factory test, the breakable Porcelain Insulator generally goes through the spark test, that is, applying high voltage to make the insulation surface produce frequent sparks and maintain it for a certain period of time to see whether it is broken.Some insulators need corona test, radio interference test, partial discharge test and dielectric loss test.The electrical strength of insulators at high altitudes decreases due to the decrease in air density. Therefore, their withstand voltage should be increased when converted to standard atmospheric conditions.

Electrical pin insulators are supplied complete with the steel spindle suitable for mounting on steel crossarm, both vertical and horizontal mounting, and ht pin insulator shall be suitable for corresponding conductors ,Threaded lead thimbles shall be cemented to the insulators to fix the insulator pins with required steel heads.

ANSI Class 56-4
Creepage Distance,mm 685
Min Pin Length,mm 254
Cantilever Strength,kn 13.2
Min Power Frequency Flashover Voltage Dry, kv 140
Wet, kv 95
Min Critical Impulse Flashover Voltage Pos., kv 225
Neg., kv 310
RIV Data Test Voltage to Ground,KV 30
Max.RIV at 1000KHZ,uV 200
Low Frequency Puncture Voltage,KV 185

56-4 pin insulator

Our Services

1. Small Orders Accepted
2. Fast producing time, Prompt Delivery
3. International Approvals
4. Reply promptly in 24 hours
5. Best Price


1. Q: How about payment terms?
A: 30% TT deposit + 70% TT before shipment,50% TT deposit + 50% LC balance, Flexible payment can be negotiated.
2. Q: Do you have some videos where we can see the line producing?
A: Yes, we can provide some videos for reference.
3. Q: Are you a Manufacture Factory?
A: Yes. We are the direct manufacture factory, and our factory has specialized in porcelain insulator,Composite Insulator,Glass Insulator,arrester, Cold And Heat Shrinkable Tube,Cut Out Fuse and Power Fitting ,etc.

4. Q: How long is producing time ?

A: Normally it will take about 30 days for production.

5. Q: What is the standard of package ?
A: For small capacity, we use carton, but for big capacity, we will use strong wooden case for protection or double inner packs in a master carton.
6. Q: How do you make sure your good quality ?

A: We use the best raw material , and every single product will go through a series of strict test.



porcelain insulator

We warmly welcome friends both domestic and abroad to visit our company, if you have any questions, please contact with us directly.

Looking for ideal Electrical Pin Insulators Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Ht Pin Insulator are quality guaranteed. We are China Origin Factory of Voltage of Pin Insulator. If you have any question, please feel free to contact us.

Product Categories : Porcelain Insulator > Pin Insulator

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