70kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U70BLP

Product Overview

● Model: U70BLP

• U Refers To Disc Suspension Insulator

• B For Ball And Socket Type

• L Stands For Long Steel Foot

• P Stands For Anti-fog Type

● Type: Anti-Pollution Or Anti-Fog Profile Toughened Suspension Type

● Rated mechanical load: 70kn (about 7 tons)

● Purpose:  It is mainly used for high voltage/ultra-high voltage transmission lines (such as 110KV, 220kV, 500kV, etc.), especially for harsh environments such as high pollution, high humidity, salt fog, industrial dust, etc., to provide electrical insulation and mechanical support.

● The product model is in accordance with GB/T 7253-2005 and JB/T9683-2012(EC60305:1995MOD)

● The connection structure is in accordance with GB/T4056-2008(IEC60120:1984,MOD) and BS 3288 part lll.

● According to customer requirements, the locking pin can be either W-pin or R-pin.

●  According to customer requirements, the locking pin can be either W-pin or R-pin.

Structure and materials

• Glass umbrella tray

  High strength toughened glass is adopted, and the mechanical properties and cold and heat shock resistance are enhanced by heat treatment process.

  It has smooth surface, strong hydrophobicity, dirt is not easy to adhere, and excellent anti pollution performance.

  Zero value self explosion characteristic: if the glass insulator loses its insulation performance due to fault, the umbrella disc will burst automatically, so that the operation and maintenance personnel can quickly identify the fault point.

• Metal accessories

  Cap& pin: made of hot-dip galvanized steel or aluminum, corrosion-resistant, and closely connected with the glass umbrella tray through cement adhesive.

  Locking pin: standardized design to ensure reliable connection of insulator string.

• Umbrella skirt design

  The large climbing distance anti- fog umbrella skirt structure is adopted, with large umbrella spacing and deep umbrella edge, which can effectively increase the creepage distance (usually ≥ 450mm) and suppress arc and pollution flashover.

  The umbrella shape is optimized to prevent rainwater from continuously forming a line and improve the wet flashover voltage.

key parameters