PXXHDC 57-2 Porcelain Post Insulator
Description
Place of origin: China
Brand name: PXXHDC
Model name: 57-2
Type: insulator
Material: porcelain
Application: low voltage
Tensile strength:125kN
Color: white and brown
Product name: 57-2 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: 22kV
Low-frequency Dry Flashover Voltage: 110kV
Low-frequency Wet Flashover Voltage: 85kV
Critical Impulse Flashover Voltage, Positive: 180kV
Critical Impulse Flashover Voltage, Negative: 205kV
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.
Flashover
A disruptive discharge external to the insulator, connecting those parts which normally have the operating voltage between them.
Dry lightning impulse withstand voltage: The lightning impulse voltage which the insulator withstand dry, under the prescribed conditions of the test
Wet power frequency withstand voltage: The power frequency voltage which the insulator withstand wet, under the prescribed conditions of test.
Electromechanical failing load: The maximum load reached when a string insulator unit is tested under the prescribed conditions of test.
Mechanical failing load: The maximum load reached when a string insulator unit of a rigid insulator is tested under the prescribed conditions of test.
