PXXHDC 57-1 Porcelain Post Insulator

short description:

Price: 4.29USD

Diameter (D): 12 Inches (305mm)

Spacing (H): 6 Inches (152mm)

Leakage Distance: 14Inches (356mm)

Net Weight Each: 11 6/9 Pounds (5.2kg)

Product Detail

Product Tags


Place of origin: China
Brand name: PXXHDC
Model name: 57-1
Type: insulator
Material: porcelain
Application: low voltage
Tensile strength:125kN
Color: white and brown
Product name: 57-1 post insulator
Certification: ISO9001/ISO14001/ISO18001
Usage: Insulation protection
Standard: ANSI/IEC60383
Advantage: factory price, high quality
Packing: wooden box
MOQ: 1000 Pieces

Mechanical Values

Cantilever Strength: 28,500Pounds (125kN)

Electrical Values

Typical Application Voltage: 15kV
Low-frequency Dry Flashover Voltage: 80kV
Low-frequency Wet Flashover Voltage: 60kV
Critical Impulse Flashover Voltage, Positive: 130kV
Critical Impulse Flashover Voltage, Negative: 155kV
RIV Test Voltage to Ground: 10kV
Maximum RIV at 1,000kHz: 50μV
High voltage line column porcelain insulator: High-voltage line column porcelain insulators are mainly used for insulating and supporting wires in high-voltage overhead transmission and distribution lines. It can replace suspension porcelain insulators and pin porcelain insulators. The high-voltage line column porcelain insulator adopts a solid non-breakdown structure, which has the advantages of good self-cleaning performance, safety and reliability, low cost, and material saving.
Line post insulator: A rigid insulator consisting of one or more pieces of insulating material permanently assembled with a metal base and sometimes a cap intended to be mounted rigidly on a supporting structure with the metal base attached by means of stud or one or several bolts.


Identification of insulators: Each insulator shall be marked, eight on the insulating component or on a metal part, with the name or trade mark of the manufacturer and the year of manufacture. In addition, each string insulator unit shall be marked with the specified electromechanical or mechanical failing load whichever is applicable. These markings shall be legible and indelible.

Insulating material

The insulating material of overhead line insulators coved by this parts are:
—ceramic material, porcelain
—annealed glass, being glass in which mechanical stresses have been relaxed by thermal treatment.
—toughened glass, being glass in which controlled, mechanical stress have been included by thermal treatment.

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