PXXHDC 53-4 Porcelain Spool Insulator
Place of origin: China
Brand name: PXXHDC
Model name: 53-4
Application: low voltage
Rated voltage: 11kV
Color: white and brown
Product name: 53-4 spool insulator
Usage: Insulation protection
Advantage: factory price, high quality
Packing: carton box
MOQ: 1000 Pieces
Transverse Strength: 5,750 Pounds (20.0kN)
Low-frequency Dry Flashover Voltage: 25kV
Low-frequency Wet Flashover Voltage, Vertical: 12kV
Low-frequency Wet Flashover Voltage, Horizontal: 15kV
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.
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.