240kN U240B Standard Suspension Glass Disc Insulator for Overhead Transmission Line

• Model:U240B
• U   Refers To Disc Suspension Insulator
• 240 indicates a rated Mechanical failing load  of 240kN
• B   For Ball And Socket Type

• 170- indicates that the height of the insulator structure is 170mm.
• 280- indicates that the diameter of the insulator disc is 280mm.
• 400- indicates that the creepage distance of the insulator is 400mm.

• Type: Standard profile Toughened Suspension Type
•  Rated mechanical load: 240kn (about 24tons)
• Purpose: Widely applicable as insulation support for medium and high voltage transmission lines and substation equipment, capable of stable operation under various climatic conditions.

• The product model is in accordance with  IEC60383-1:1993，MOD / GB/T1001.1
• 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.
• lf there is no special instruction, R pin is used for U240B.

Suspension insulators consist of the following elements:

• - One dielectric made of toughened glass with the appropriate properties and shape for the environmental conditions in which it must function.
• - One hot-dip galvanized nodular or ductile malleable cast iron cap.
• - One hot-dip galvanized forged steel pin.
• - The cap and pin are assembled on the glass piece using aluminous cement with the appropriate properties to withstand the thermomechanical efforts.

Lastly, the insulator cap has a stainless steel or phosphor bronze locking device (split pin) which secures the coupling of the units.

Similarly, the pins may be protected using an anti-corrosion zinc sleeve (sacrificial anode), when requested. This zinc sleeve is strongly recommended for insulators which are going to be used in lines with heavy pollution.