What is the safe distance from 400 KV line?
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What is the safe distance from 400 KV line?
For the 400 kV, 500 MW line under consideration, the flux density of 1.265 mg is reached when x = 77m; this implies that the safe clearance distance is 77m from the line centre on the either side. Thus, the overall safe clearance distance is 154m.
What is the area required for 400 kv substation?
Foundation Mounted type Substation used above 250 kVA and 33 kV….Detailed Solution.
| Type of Substation | Area Required |
|---|---|
| 132 kV Substation | 10 acres |
| 220 kV Substation | 25 acres |
| 400 kV Substation | 50 acres |
What should be the clearance from ground for high voltage lines?
(4) For extra-high voltage lines the clearance above ground shall not be less than 5.2 metres plus 0.3 metre for every 33,000 volts or part thereof by which the voltage of the line exceeds 33,000 volts: Provided that the minimum clearance along or across any street shall not be less than 6.1 metres.
What are the different electrical clearances in substation?
Minimum Clearance in Substation:
| Voltage | Highest Voltage | Ground Clearance(Mt) |
|---|---|---|
| 11KV | 12KV | 3.700 |
| 33KV | 36KV | 3.700 |
| 132KV | 145KV | 4.600 |
| 4.600 |
What is the minimum ground clear distance for 11 kV overhead line?
Clearance above ground of the lowest conductor As per IE Rule 77
| Over head Line Across Street | |
|---|---|
| Low and Medium Voltage | 5.8 Meter |
| Low/Medium /HT line up to 11KV If Insulated Conductor | 4.0 Meter |
| Above 11 KV Line | 5.2 Meter |
| Above 33KV Line | 5.8 Meter + Add 0.3 meter for every additional 33KV |
What is kV substation?
220kV substation equipment. This is accomplished by suitable apparatus called Substation. For example, generation voltage (11KV or 6.6KV) at the power station is stepped up to high voltage (say 220KV or 132KV) for transmission of electric power. The assembly of apparatus (e.g. transformer etc.)
What is the minimum ground clear distance for 11 kv overhead line?
What is Section clearance?
Section clearance is the distance between two sections of substation, which enables a person to work on one section of a substation in a safe manner, while the other section is charged.
What is the minimum distance while working close to 11 KV or 440 V overhead lines?
Clearance from Buildings to low, medium and high voltage lines
| Voltage | Description | Distance |
|---|---|---|
| 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 ) |
How big is ground clearance for 400 kV substation?
As per calculations and measurements carried out in 400 kV substations with 8 meter ground clearance and with 6 meter phase to phase distance, electric fields at various locations have been found to be well within the limit of 10KV/mtr.
Is there limit to electric field and clearances?
The limit the electric field and to maintain electrical clearances, the following conductor levels have been generally considered.
What is the minimum electrical clearance for 33kV?
Minimum Electrical Clearance As Per BS:162. for 33kV enclosed , Minimum Phase to Earth is 222mm, but as per up gradation BS these dimension are same or change.
What are the ground clearance requirements for AIS substations?
The minimum ground clearances between the live point and ground at the substation for the different voltage classes in rule no 64 of I.E. Rule 1956. Below is the table for ground clearance, Phase to earth clearance and bus height. Minimum clearance in air for outdoor substation is as stated in DIN VDE 0101 or specified by IEC 61936.