11KV Porcelain Disk Suspension Insulator High Voltage Glass Insulator Rated at 33KV
CTV 254 insulator is used in high-voltage power transmission systems ranging from 10 kV to 330 kV. It has a diameter of 254 mm, a creepage distance of 320 mm, and can withstand a minimum mechanical failing load of 70 kN.

| Item |
- |
CTV 175 |
CTV 254 |
| IEC Designation |
- |
U40B/110 |
U70B/146 |
U70B/127 |
| Nominal Diameter D |
mm |
178 |
255 |
255 |
| Nominal Height H |
mm |
110 |
146 |
127 |
| Nominal Creepage Distance L |
mm |
185 |
320 |
320 |
| Socket Coupling |
mm |
11 |
16 |
16 |
| Mechanical Failing Load |
kN |
40 |
70 |
70 |
| Mechanical Routine Test |
kN |
20 |
35 |
35 |
| Wet Power Frequency Withstand Voltage |
kV |
25 |
40 |
40 |
| Dry Lightning Impulse Withstand Voltage |
kV |
70 |
100 |
100 |
| Impulse Puncture Voltage |
P.U |
2.8 |
2.8 |
2.8 |
| Power Frequency Puncture Voltage |
kV |
90 |
130 |
130 |
| Radio Influence Voltage |
μv |
50 |
50 |
50 |
| Corona Visual Test |
kV |
18/22 |
18/22 |
18/22 |
| Power Frequency Electric Arc Voltage |
kA |
0.12s/20kA |
0.12s/20kA |
0.12s/20kA |
| Net Weight Per Unit |
kg |
1.7 |
3.6 |
3.5 |