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High voltage post electrical porcelain insulator 57-1

High voltage post electrical porcelain insulator 57-1

Short Description:

Overhead Line Transmission Line ANSI 57-1 Series Porcelain Line Post Insulator
ANSI 57-1 PORCELAIN INSULATOR POST TYPE 15 KV standard horizontal line post insulator/porcelain post insulators
Post ceramic insulator is an electrical equipment used for supporting and insulating. It is mainly composed of ceramic parts and metal accessories (such as iron caps, flanges, etc.). Ceramic components are the core part of its insulation, generally cylindrical in shape, with high mechanical strength and good electrical insulation performance. Metal accessories are used for installation and fixation, which can firmly connect column ceramic insulators to supporting structures (such as towers, crossarms, etc.) or electrical equipment.


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Working principle of post porcelain insulator:

From an electrical perspective, its ceramic components can effectively prevent current from conducting between the supporting structure and the wires (or electrical equipment), serving as insulation. Its insulation performance is achieved through the high electrical resistivity and high dielectric strength of ceramic materials. From a mechanical perspective, column ceramic insulators can withstand various mechanical forces such as the weight of wires (or electrical equipment), wind loads, ice loads, etc., ensuring the stable operation of the electrical system. For example, in a 10kV overhead distribution line, column porcelain insulators are vertically installed on the cross arm to support the wires above, ensuring insulation between the wires and the cross arm while bearing the weight of the wires and potential wind loads.

Main type of post porcelain insulator:


ANSI class Type No. Creepage distance mm Dry arcing distance mm Cantilever strength kN Flashover voltage Dry kV Flashover voltage Wet kV Critical impulse flashover voltage positive kV Critical impulse flashover voltage Negative kV RIV data to ground kV RIV data MAX RIV kV
57-1 S/L 356 165 125 80 60 130 155 15 100
57-2 S/L 559 241 125 110 85 180 205 22 100
57-3 S/L 737 311 125 125 100 210 260 30 200
57-4 S/L 1015 368 125 150 125 255 340 44 200
57-5 S/L 1145 438 125 175 150 290 380 44 200

 

Product name: porcelain insulator Model number:57-1
Material: porcelain Application: high voltage
Rated voltage: 12kV/33kV Product name: high voltage insulator
Brand name: Huayao Usage：Transmission lines
Application: insulation Place of origin: Jiangxi, China
Standard: IEC60383 Color: brown/white

Product Details

57-1 porcelain post type insulator   

Place of Origin:  China
Brand name:  HUAYAO
Certification:  ISO9001
Daily output:  10000 piece

Payment & Shipping
Minimum Order Quantity: 10 pieces
Packaging Details:  normal export packaging
Supply Ability:  50000pcs
Delivery Port:  Ningbo,Shanghai
Payment term:  TT, L/C, FCA 


Quick Detail：

Porcelain Standard Profile post Insulators 57-1

Dimensions
Diameter (D): 146mm
Spacing (H): 226mm
Creepage Distance: 356mm

Mechanical Values
Cantilever strength: 125kN

Electrical Values
Dry flashover Voltage:80kV
Wet flashover Voltage: 60kV
Critical impulse flashover voltage positive: 130kV
Critical impulse flashover voltage negative:155kV

Radio Influence Voltage Data
Test Voltage RMS to Ground: 15kV
Maximum RIV at 1000 kHz: 100μV

Related products for porcelain insulator:



The Production process flow:

The production process of porcelain insulators in Jiangxi Huayao Electric Co.,Ltd is as follows:
Mix raw material=>make blank shape=>Drying=> Glazing=>put into kiln=> Glue assembly=> routine test and other test=> Finished products package



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