Electrical Safety Clearance (ETSA Utilities,Australia) (Part-4)
August 11, 2012 12 Comments
Standard: ETSA Utilities
Vertical Clearances between Services:
|
Service |
LV Cable |
HV Cable |
|
Common Pipe |
0.100 Meter |
0.100 Meter |
|
Gas Pipe |
0.200 Meter | 0.200 Meter |
|
Sewer Pipe |
0.300 Meter | 0.300 Meter |
|
Water Pipe |
0.600 Meter | 0.600 Meter |
|
|
|
|
Horizontal Clearances between Services:
|
Service |
LV Cable |
HV Cable |
|
Common Pipe |
0.100 Meter |
0.100 Meter |
|
Gas Pipe |
0.200 Meter | 0.200 Meter |
|
Sewer Pipe |
1.0 Meter | 1.0 Meter |
|
Water Pipe |
0.600 Meter | 0.600 Meter |
|
|
|
|
Standard: UK Power Networks – EI 02-0019
Cable Installation Depths:
|
Voltage |
Area |
Depth (min) |
|
Low Voltage |
Footways, grass verges or private property |
0.450 Meter |
| Carriageways (including road crossings) |
0.600 Meter |
|
| Normal agricultural land (not deep ploughing) |
1.0 Meter |
|
| Agricultural land subject to deep ploughing |
1.2 Meter |
|
|
11 KV to 20 KV |
Footways, grass verges or private property |
0.600 Meter |
| Carriageways (including road crossings) |
0.750 Meter |
|
| Normal agricultural land (not deep ploughing) |
1.0 Meter |
|
| Agricultural land subject to deep ploughing |
1.2 Meter |
|
|
33 KV to 132 KV |
Footways, grass verges or private property |
0.900 Meter |
| Carriageways (including road crossings) |
0.900 Meter |
|
| Normal agricultural land (not deep ploughing) |
1.0 Meter |
|
| Agricultural land subject to deep ploughing |
1.2 Meter |
|
|
Auxiliary Multi-core & Multi-pair Cables |
Footways, grass verges or private property |
0.450 Meter |
| Carriageways (including road crossings) |
0.600 Meter |
|
| Normal agricultural land (not deep ploughing) |
1.0 Meter |
|
| Agricultural land subject to deep ploughing |
1.2 Meter |
|
| On Cable Ladder for LV to HV | The Horizontal clearance between cables on cable ladders |
2X Dia of Cable of Largest Cable or min 150 mm |
| The clearance from a supporting wall |
20 mm |
|
| The vertical clearance between cables is greater |
150 mm |
|
| If the number of cables > 4, they are to be installed in a horizontal |
|
Minimum Approach Distance of Crane or Moving Part from Live Conductor:
|
Voltage |
Without Safety Observation |
For ordinary Person |
|
|
Un insulated portions |
Insulated portions |
||
|
Upto1KV |
2 Meter |
1.0 Meter |
3.0 Meter |
|
11 KV |
2 Meter |
1.4 Meter |
3.0 Meter |
|
22 KV |
2.4 Meter |
2 Meter |
3.0 Meter |
|
33 KV |
2.4 Meter |
2 Meter |
3.0 Meter |
|
66 KV |
2.8 Meter |
2 Meter |
3.0 Meter |
|
132 KV |
3.0 Meter |
3.0 Meter |
3.0 Meter |
|
220 KV |
4.8 Meter |
4.8 Meter |
6.0 Meter |
|
330 KV |
6.0 Meter |
6.0 Meter |
6.0 Meter |
|
500 KV |
8.0 Meter |
8.0 Meter |
8.0 Meter |
Minimum Fixed Clearances for Electrical Apparatus (Isolation Points):
|
Voltage |
Fixed Clearance |
|
Up to 11Kv |
0.320 Meter |
|
11KV to 33KV |
0.320 Meter |
|
33KV to 66KV |
0.630 Meter |
|
66KV to 132KV |
1.1 Meter |
JIGNESH PARMAR
it is really very useful things you are providing sir…thanks a lot…
Thank you so much, Mr.Jignesh.
excellent
May I connect transformer neutral pits with grid earthing system?
please reply ……
As per IR Rule You should have separate Neutral Pit and Body Earthing Pit.You can not mix both Earthing.
i want 220 kv double circut in parlley laying , how much the clear distance need minimum vertical horizontal,
in my site oil line parllely is going in my cable route , how much req vertical and horizontal clearance
220kv underground cable double circuite parrely in betwwen how much reguired for
separtion clerence.
Very nice article, thanks..
Hello Mr. Parmar. Have you any information about safety rules concerning of vertical clearances of wires, coductors and cables from chimneys, radio and television antennas and tanks?
What is the vertical clearance betwen live conductors LV, MV and chimneys, radio & television antennas and tanks?
dear sir ..
thank you so much …. but if u can provide us the number of iec standard about clearance between M.V (11 KV) LINE and oil pipe ……..plz
do you have the IEC reference for clearances between services?