CLEARANCE AND SPACINGS:
HORIZONTAL CLEARANCE BETWEEN LINE SUPPORT AND HIGH WAYS |
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Sl.No |
Type of Road |
Width of Road in Meters (FT) |
Clearance between Center of the road and support In metres (FT) |
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1 |
National highways |
11.58 (38') |
7.76 (25') |
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2 |
State Highways |
9.75(32') |
6.3(22') |
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3 |
Major District Roads |
7.32(24') |
5.49(18') |
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CLEARANCE OF OVER HEAD LINES CROSSING OR APPROACHING EACH OTHERS |
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Sl.No |
System voltage of Existing line |
High voltages up to 66 KV minimum |
11 KV Clearance |
132 KV in |
220 KV Metres |
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1 |
Low medium volgates H.V EHV upto 66 KV |
2.44 |
2.75 |
3.05 |
4.58 |
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2 |
110 KV |
2.75 |
2.75 |
3.05 |
4.58 |
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3 |
132 KV |
3.05 |
3.05 |
3.05 |
4.58 |
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4 |
220 KV |
4.8 |
4.8 |
4.8 |
4.8 |
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CLEARANCES BETWEEN POWER AND TELECOMMUNICATIONS LINES |
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Sl.No |
Particulars |
Clearance between gurding wire and Tel. Com line MM (ft) |
Clearance between power an Tel.com line in MM (ft) |
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1 |
up to 11 KV |
1220 (4) |
1525 (5) |
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2 |
33 KV |
1220 (4) |
1830 (6) |
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3 |
66 KV |
1220 (4) |
2440 (8) |
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4 |
132 KV |
1830 (6) |
2740 (9) |
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5 |
220 KV |
----- |
3050 (10) |
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Authority : Clause 7 & 8 on pages 14 - 61 of Technical reference Book |
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THREE CLEARANCES |
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Sl. No |
Particulars |
The Clearaces Required |
Relaxation |
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1 |
33 kV lines |
All growth with in 30 feet on eigher side of the line and all trees , which on falling will foul the lines. |
In the case of betel topes all growth with in 15 feet on right side of the line |
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2 |
11 KV lines |
All growth with in 20 feet on either side of the line and trees. Which on falling will foul the lines |
in the case of betel ropes all growth with in 10 feet on eight side of the line |
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3 |
Rural 11 KV lines |
Left to the discretion of the Departmental staff (Asst. Divisional Enginer and above) |
Left to other discretion of the Departmental staff (A.D.E and above) |
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4 |
High tension and low tension lines in Distribution Schemes |
Left to the discretion of the Departmental staff (Asst. Divisional Engineer and above) |
Departmental staff (A.D.E and above) |
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