Disc Insulator

Quick Details

• Place of Origin:China (Mainland)
• Brand Name:Disc Insulator.
• Model Number:Disc Insulator
• Electricity Type:Insulator
• Number of Pole:Insulator
• Phase:1
• Main Circuit Rating Voltage:Different type Disc Insulator.
• Main Circuit Rating Current:Different type Disc Insulator.

Packaging & Delivery

Packaging Details:	As per Our Tender Requirement & different Customer Requirement
Delivery Detail:	180 days

Specifications

Disc Insulator.
Technical Specification of 33 KV Disc Insulator with fittings STANDARDS: These 33 kV Disc Insulator with Fittings specified in this Section shall conform to the latest edition of the following standards for operation in overhead lines in air under local ambient conditions. Design, Manufacture, Testing and Performance shall be in accordance with latest revisions of BS, IEC standards as listed below or other equivalent Internationally acceptable Standards: IEC-120 : Ball & Socket Coupling. IEC-305 : Characteristics of String Insulator Unit. IEC-383 : Insulator Tests. IEC-437 : Radio Interference Tests. IEC-506 : Switching Impulse Tests. IEC-575 : Thermal Mechanical Performance Tests. BS-137 : Method of test & requirements. BS-916 : Bolts, Screws & Nuts. 4.4.2 SPECIFICATIONS: 4.4.2.1 Specification of Disc Insulator: These 33 kV Disc Insulators shall be designed as per following standards for operation in overhead lines in air under local ambient conditions. 1. Installation Overhead line for suspension or termination. 2. Nominal System Voltage, kV 33 (line to line). 3. Type of System Three phase, 50 Hz, Three Wire, Effectively earthed. 4. Highest System Voltage, kV 36 (three phase). 5. Atmospheric Condition Moderately polluted. 6. Altitude, meter 0-300 above sea level. 7. Maximum Ambient Temperature, ºC 45. 8. Insulator Material The Insulator shall be made of good commercial grade wet process porcelain. The porcelain shall be sound, thoroughly vitrified and free from defects and blemishes that might adversely affect the life of the Insulator. The exposed parts of the porcelain shall be smoothly glazed and shall be brown in color unless otherwise specified. 9. Type of Insulator Ball & Socket type Disc, security clip made of Stainless Steel or Phosphor Bronze. 10. Markings Each Insulator shall be marked with the name of Trade Mark of the manufacturer, the type of Insulator and the year of manufacture. These markings shall be legible and indelible. Technical Specification 4-9 11. Maximum Nominal Diameter of Insulator, mm 255 12. Nominal Spacing, mm 146 13. Minimum Nominal Creepage Distance, mm 292 14. Coupling Size, mm 16 15. 15.1 15.2 15.3 WITHSTAND VOLTAGE, MINIMUM Power Frequency, dry (one minute), kV Power Frequency, wet (one minute), kV Impulse 1.2x50 micro-sec wave, kV 70 40 110 16. 16.1 16.2 16.3 16.4 FLASHOVER VOLTAGE, MINIMUM Power Frequency, dry, kV Power Frequency, wet, kV 50% Impulse 1.2x50 micro-sec wave, positive, kV 50% Impulse 1.2x50 micro-sec wave, negative, kV 78 45 120 125 17. POWER FREQUENCY PUNCTURE VOLTAGE MINIMUM, kV 110 18. 18.1 18.2 RADIO-INFLUENCE VOLTAGE DATA MINIMUM: Power Frequency Test Voltage, RMS to Ground, kV Maximum RIV at 1000 KC Micro-volt 10 50 19. MECHANICAL FAILING LOAD MINIMUM, kN 70