Code: Indian Electricity Rules/ Central Electricity Authority:
Right of Way Clearance (As per GETCO Standard):
KV
|
Min ROW
|
66 KV
|
18 Meter
|
132 KV
|
27 Meter
|
220 KV
|
35 Meter
|
400KV
|
52 Meter (Single Circuit)
|
400 KV
|
48 Meter (Double Circuit)
|
Minimum clearances between Electrical Lines crossing each other:
Voltage
|
66 KV
|
132 KV
|
220 KV
|
400 KV
|
66 KV
|
2.4 Meter
|
3 Meter
|
4.5 Meter
|
5.4 Meter
|
132 KV
|
3 Meter
|
3 Meter
|
4.5 Meter
|
5.4 Meter
|
220 KV
|
4.5 Meter
|
4.5 Meter
|
4.5 Meter
|
5.4 Meter
|
400 KV
|
4.5 Meter
|
5.4 Meter
|
5.4 Meter
|
5.4 Meter
|
Permissible Min ground Clearance of Electrical Line:
KV
|
Ground Clearance
|
Over National Highway
|
66 KV
|
6.1 Meter
|
8.0 Meter
|
132 KV
|
6.1 Meter
|
8.6 Meter
|
220 KV
|
7.0 Meter
|
9.8 Meter
|
400KV
|
8.8 Meter
|
10.8 Meter
|
Clearance for Telephone line Crossings Power Line:
KV
|
Clearance (Min)
|
66 KV
|
2.4 Meter
|
132 KV
|
2.7 Meter
|
220 KV
|
3.0 Meter
|
Vertical Clearance between Electrical Line and railway tracks.
KV
|
Clearance (Min)
|
66 KV
|
14 Meter
|
132 KV
|
14.6 Meter
|
220 KV
|
15.4 Meter
|
400 KV
|
17.9 Meter
|
Clearance from Buildings to low, medium & high voltage lines:
| Voltage | Description | Distance |
| Low & Medium Voltage | Flat roof, open balcony, verandah roof ,When the line passes above the building a vertical clearance from the highest point | 2.5 Meter |
| Low & Medium Voltage | Line passes adjacent to the building a horizontal clearance from the nearest point | 1.2 Meter |
| Low & Medium Voltage | Line passes above the building a vertical clearance | 2.5 Meter |
| Low & Medium Voltage | Line passes adjacent the building a Horizontal clearance | 1.2 Meter |
| 11 KV to 33 KV | Line passes above or adjacent to any building or part of a building | 3.7 Meter |
| Above 33 KV | Line passes above or adjacent to any building or part of a building | 3.7+(0.3 for every additional 33 KV ) |
| Up to 11 KV | The horizontal clearance between the nearer conductor and any part of such building | 1.2 Meter |
| 11 KV to 33 KV | The horizontal clearance between the nearer conductor and any part of such building | 2.0 Meter |
| Above 33 KV | The horizontal clearance between the nearer conductor and any part ofsuch building | 2.0 + (0.3 for every additional 33 KV ) |
Clearance above ground at the lowest conductor:
| Voltage | Description | Distance |
| Low & Medium Voltage | Across a street | 5.8 Meter |
| High Voltage | Across a street | 6.1 Meter |
| Low & Medium Voltage | Along a street | 5.5 Meter |
| High Voltage | Along a street | 5.8 Meter |
| Low & Medium Voltage | Elsewhere than along or across any street | 4.0 Meter |
| High Voltage | Elsewhere than along or across any street | 5.2 Meter |
| 33 KV & EHV | Clearance above ground(Add 0.3 Meter for every 33 KV Volts in 5.2 Meter) | Min 6.1 Meter |
Vertical Clearance at Middle of Span:
Span
|
Vertical Clearance (At Middle of Span)
|
200 Meter
|
4.0 Meter
|
300 Meter
|
5.5 Meter
|
400 Meter
|
7.0 Meter
|
500 Meter
|
8.5 Meter
|
Safety Clearance from Live Part in Outdoor Substation:
KV
|
Safety Working Clearance
|
12 KV
|
2.6 Meter
|
36 KV
|
2.8 Meter
|
72.5 KV
|
3.1 Meter
|
145 KV
|
3.7 Meter
|
220 KV
|
4.3 Meter
|
400KV
|
6.4 Meter
|
800 KV
|
10.3 Meter
|
Lying of Telecommunication Cables with Power Cables (>33 kV).
Cable
|
Min. Distance
|
| Power cable of voltage exceeding 33 kV shall be laid |
Min 1.2 Meter depth
|
| Underground telecommunication cable shall be with underground power cable of voltage exceeding 33 kV. |
Min 0.6 Meter Separate from Power Cable
|
Safe approach limits for people:
Voltage
|
214V to 415 KV
|
11KV
|
33KV
|
66KV
|
132KV
|
275KV
|
| Person using manually operated tool | 1.3 Meter | 2.0 Meter | 3.0 Meter | 4.0 Meter | 5.0 Meter | 6.0 Meter |
| Person using power operated tool | 3.0 Meter | 3.0 Meter | 3.0 Meter | 4.0 Meter | 5.0 Meter | 6.0 Meter |
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