COMPOSITE INSULATORS - 400kV
 
 
 
     
 
Sl.no Parameter Unit 400kV 400kV
1 Shed Diameter
mm
 142or/132/112 142or/132/112
2 Unit Spacing
mm
 3335 3910
3 Creepage Distance
mm
 10500 13020
4 Arcover Distance
mm
 3050 3400
5 Electro-Mechanical Min. Failing Load
kN
 120 160
6 Coupling Designation
mm
 20 20
7 Pf-Wet Withstand Voltage
kV
 680 680
8 Pf-Dry Withstand Voltage
kV
 720 720
9 DRY-Lightning Impulse Withstand Voltage
kVp
 1550 1550
10 Visible Discharge Test Voltage
kV
 305 305
11 Weight of Unit (Approx)
kg
 18.5 21
 
     
 
  1. Specific creepage distance from 16 mm / kV to 40 mm / kV
2. Length ranges from 285 mm to 4080 mm
3. Specified mechanical loads from
 
  a. 45 KN to 120 kN for 33 kV to 132 kV.
b. 70 KN to 160 kN for 220 kV.
c. 120 KN to 160 kN for 400 kV.
  4. For specific requirement, contact: CBU / Marketing, Malleshwaram, Bangalore....560012