1.9 KiB
1.9 KiB
title, tags, up
| title | tags | up | ||
|---|---|---|---|---|
| Medium Voltage |
|
electrical |
Medium Voltage
"Medium voltage" refers to voltage systems greater than 600V.
Insulation Level
[!example]
[!cite] 343 Madison Avenue Project Specifications, emphasis added 2.2 MEDIUM VOLTAGE CABLES (CON EDISON)
- ...
- H. Construction
- ...
- Insulation
- ...
- c. The minimum average insulation thickness shall be not less than 175 mils. The minimum thickness at any cross-section of the insulation shall be not less than 90% of the specified minimum average thickness.
In this case 100% insulation level is appropriate for 15kV conductors.
| Voltage Rating | Insulation Level | Insulation Thickness |
|---|---|---|
| 5kV | 100% | 90 mils |
| 5kV | 133% | 115 mils |
| 5kV | 173% | 140 mils |
| 8kV | 100% | 115 mils |
| 8kV | 133% | 140 mils |
| 8kV | 173% | 175 mils |
| 15kV | 100% | 175 mils |
| 15kV | 133% | 220 mils |
| 15kV | 173% | 260 mils |
| 25kV | 100% | 260 mils |
| 25kV | 133% | 320 mils |
| 25kV | 173% | 420 mils |
| 35kV | 100% | 345 mils |
| 35kV | 133% | 420 mils |
| 35kV | 173% | 580 mils |