Project Description

  • Porcelain Insulator: U70BL
  • Porcelain Insulator: U70BL
  • Porcelain Insulator: U70BL
  • Porcelain Insulator: U70BL
  • Porcelain Insulator: U70BL
  • Porcelain Insulator: U70BL

Porcelain Disc Insulator: IEC U70BL

Porcelain insulator includes Suspension type, Pin type, Spool type, Strain/Guy type, Line Post type and Station Post type, which meet IEC, ANSI, AS, BS, etc. standards.

Suspension Insulator: IEC 305 (BS 137 & AS1137): From 40 KN, 45KN, 60KN, 70KN, 80KN, 100KN, 110KN, 120 KN, 125KN, 160KN, 210KN, 300KN upto 400KN.

Fig. No. 4 4 3 4 4 4 4 4 4
IEC Class U40BL U70BL U70C U80 U100BL U120BL U160BL U210BL U300BL
Dimension (mm) D 175 255 255 255 255 255 255 280   320
H 110 146 146 146 146 146 155 170 195
Creepage distance (mm) 185 295 295 295 295 295 305 335 370
Coupling size 11 16 16C 16A 16 16 20 24 24
Rated E& M failing load (kN) 40 70 70 80 100 120 160 210 300
Routine tension load (kN) 20 35 35 40 50 60 80 105 150
Impact failing load (N.M.) 5 6 6 6 7 7 10 10 10
Wet power-frequency withstand voltage (kV) 30 40 40 40 40 40 40 42 45
Lightning impulse withstand voltage (kV) 75 100 100 100 100 100 100 105 110
Radio influence
voltage		 Test voltage to ground (kV) 7.5 10 10 10 10 10 10 10 10
Max. RIV at 1000kHz (uV) 50 50 50 50 50 50 50 50 50
Power frequency puncture voltage (kV) 90 120 120 120 120 120 120 120 120
Net weight, Each, Approx (kg) 2.38 4.7 4.7 5.1 5.75 5.75 6.9 9.5 13.5

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