- Overhead Power Transmission Line Hardware HT & LT Insulator Hardware   - Steel Forged Hardware - Insulator Pins - Insulator String (Suspension & Tension) Hardware - Tension Hardware Assembly Pole Line Hardware Conductor Accessories Earthwire & Hardware Pole Stay Wire & Stay Set Aerial Bundle Cable Fittings Helical Fittings Porcelain Insulators   - 11 kV Pin Insulators - 33 kV Pin Insulators - Disc Insulators Low Tension Insulators & Hardware Sub-station Clamps & Connectors + Control Panels & Switchboard Components       Products > Overhead Power Transmission Line Hardware HT & LT > Porcelain Insulators > Disc Insulators   Disc Insulators   Part No. Name Material 1 Socket Cap Malleable Cast Iron Hot Dip Galvanized 2 Security Clip Phosphor Bronze or Stainless Steel 3 Separator Cork 4 Cement Rapid Hardening Portland 5 Paint Bituminous 6 Shell Porcelain 7 Ball Pin Forged Steel Hot Dip Galvanized Salient Features : Our suspension/tension disc insulators ensure maximum creepage path due to their distinctive geometrical configuration. Smooth rounded contours of shell provide protection against chipping. The glaze applied is compressive in nature, adds to mechanical strength and provides smooth surface for self cleaning under contamination. Caps are made of malleable cast iron and pins of forged steel. These are galvanized to provide better protection against corrosion. Socket caps and pins are checked by specified gauges one and all to assure interchangeability. Socket portion suits 'R' clip or 'W' clip. The security clips are made of phosphor bronze or stainless steel. Ball & Socket Type Discs (Normal Profile) Standard Particulars       Product No. UT-DB- 1112-45B UT-DB- 1112-70 UT-DB-1112-90 Porcelain Dia. mm 255 255 255 Spacing mm 145 145 145 Creepage Distance Total Creepage mm 320 292 292 Protected Creepage (90º) mm 165 165 165 Combined Electro Mechanical Strength kN 45 70 90 Flashover Voltage Power Frequency Dry kV 75 75 75 Wet kV 45 45 45 Impulse Positive kVp 115 115 115 Negative kVp 120 120 120 Withstand Voltage One Minute Power Frequency Dry kV 70 70 70 Wet kV 40 40 40 Impulse Positive kVp 110 110 110 Negative kVp 115 115 115 Visible Discharge Voltage kV 9 9 9 Power Frequency Puncture Voltage kV 110 110 110 Radio Influence Voltage data Test Voltage RMS to ground kV 10 10 10 Max R I V at 1MHz µV 50 50 50 Ball & Socket Size   16mm B 16mm B 16mm B Nett Weight (Approx) kg 5 5.2 5.2 Contents of each package Nos. 6 6 6 Applicable Specification : IS 731, BS : 137 & IEC : 383 Standard Particulars       Product No. JS-DB- 1112-120 JS-DB- 1113-120A JS-DB-1113-160 Porcelain Dia. mm 255 280 280 Spacing mm 145 145 170 Creepage Distance Total Creepage mm 320 350 350 Protected Creepage (90º) mm 180 200 230 Combined Electro Mechanical Strength kN 120 120 160 Flashover Voltage Power Frequency Dry kV 75 75 80 Wet kV 45 45 50 Impulse Positive kVp 125 125 130 Negative kVp 130 130 135 Withstand Voltage One Minute Power Frequency Dry kV 70 70 75 Wet kV 40 40 45 Impulse Positive kVp 115 115 120 Negative kVp 120 120 125 Visible Discharge Voltage kV 18 18 18 Power Frequency Puncture Voltage kV 120 120 130 Radio Influence Voltage data Test Voltage RMS to ground kV 10 10 10 Max R I V at 1MHz µV 50 50 50 Ball & Socket Size   20 mm 20 mm 20 mm Nett Weight (Approx) kg 6.0 7.5 8.0 Contents of each package Nos. 6 6 5 Applicable Specification : IS 731, BS : 137 & IEC : 383 Export packing of insulators in pallets           Website designed & developed by Webz Solutions™