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Home > Products > Porcelain Insulator > Line Post Insulator > 57-2 Series Line Post Insulator
57-2 Series Line Post Insulator
57-2 Series Line Post Insulator
  • 57-2 Series Line Post Insulator
  • 57-2 Series Line Post Insulator

57-2 Series Line Post Insulator

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

Basic Info

Model No.: 57-21,57-22, 57--23, 57-24, 57-25

Application: Insulators

Type: Solid

Material: Porcelain

Certification: ISO9001

Color: Brown

Additional Info

Packaging: Carton, Wooden case, Sack

Transportation: Ocean,Land

Place of Origin: Fuzhou, China

HS Code: 85462090


Product Description

57-2 Series Line Post Insulator

High voltage line Post Insulator 57-2 series are made of ceramic and are manufactured to ANSI standards. Porcelain Insulator have passed ISO9001 SQA. Line post type insulator suitable for high voltage line insulation, the 57-2 series Ceramic Line Post Insulator includes 57-21,57-22,57-23,57-24,57-25.

ANSI Class 57-21 57-22 57-23 57-24 57-25
Creepage Distance, mm 356 559 737 1015 1145
Dry Arcing Distance, mm 165 241 311 368 438
Cantilever Strength, kn 12.5 12.5 12.5 12.5 12.5
Low Frequency Flashover Voltage Dry, kv 80 110 125 150 175
Wet, kv 70 100 115 135 160
Critical Impulse Flashover Voltage Pos., kv 130 180 210 255 290
Neg., kv 155 205 260 340 380
Test Voltage to Ground, kv 15 22 30 44 44
Maximum RIV at 1000KHZ, μv 100 100 200 200 200
Net Weight, Each Approx., kg 7.5 10.5 12.7 16.8 19.5
57-21 line post insulatorline post insulator 57-22line post insulator 57-23line post insulatorsline post insulator 57-24

line post insulator 57-25line post 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 insulator ,arrester ,ABC Cable Fitting,Cut Out Fuse, 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.
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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 Post in Line Insulator Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Line Post Type Insulator are quality guaranteed. We are China Origin Factory of High Voltage Line Insulation. If you have any question, please feel free to contact us.

Product Categories : Porcelain Insulator > Line Post Insulator

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