High Tension Insulators for Transmission and Distribution Lines from 11 KV to 400 KV.

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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.

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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 FrequencyDrykV 75 75 75
WetkV 45 45 45
ImpulsePositivekVp 115 115 115
NegativekVp 120 120 120
Withstand Voltage One Minute Power FrequencyDrykV 70 70 70
WetkV 40 40 40
ImpulsePositivekVp 110 110 110
NegativekVp 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

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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 FrequencyDrykV 75 75 80
WetkV 45 45 50
ImpulsePositivekVp 125 125 130
NegativekVp 130 130 135
Withstand Voltage One Minute Power FrequencyDrykV 70 70 75
WetkV 40 40 45
ImpulsePositivekVp 115 115 120
NegativekVp 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

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