PXXHDC 57-3 Porcelain Post Insulator
Place of origin: China
Brand name: PXXHDC
Model name: 57-3
Application: low voltage
Color: white and brown
Product name: 57-3 post insulator
Usage: Insulation protection
Advantage: factory price, high quality
Packing: wooden box
MOQ: 1000 Pieces
Cantilever Strength: 28,500Pounds (125kN)
Typical Application Voltage: 30kV
Low-frequency Dry Flashover Voltage: 125kV
Low-frequency Wet Flashover Voltage: 100kV
Critical Impulse Flashover Voltage, Positive: 210kV
Critical Impulse Flashover Voltage, Negative: 260kV
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.
Type test are intended to verify the main characteristics of an insulator which depend mainly on its design. They are usually carried out on a small number of insulators and only once for a new design or manufacturing process of insulator and then subsequently repeated only when the design or manufacturing process is changed. When the change affects only certain characteristics, only the tests relevant to these characteristics need to be repeated. Moreover, it is not necessary to perform the electrical. Mechanical and thermal-mechanical type test on a new design of insulator if a valid test certificate is available on an insulator of equivalent design and same manufacturing process.
The meaning of equivalent design is given in the relevant clauses when applicable. The results of type tests are certified either by test certificates accepted by the purchaser or by test certificates confirmed by a qualified organization.