What is the minimum distance between conductors that should be maintain?
Min. Distance between two Conductors on Different Supports
| High Voltage Circuit | Distance (min) |
|---|---|
| 1 KV to 33 KV | 1.2 Meter |
| 33 KV to 66 KV | 1.8 Meter |
| 110 KV | 2.4 Meter |
| More than 220 KV | 2.8 Meter |
What should be the spacing between the two conductors of the working voltage is 11 kv?
101 mm – Spacing between two conductors if working voltage is 11 kV.
What is the distance between transmission lines?
As per Indian Electricity Rule 1956, Clause No 77, the minimum distance between bottom conductor and ground of a 400KV transmission line is 8.84 meter. As per this clause, of IE 1956, minimum ground clearance of 33KV uninsulated electrical conductor is 5.2 meter.
What is the minimum distance between one to another pole for an 11kV transmission line?
The center-to-centre distance between the holes shall be 1070 mm (for 11kV) and 1525 mm (for 33kV) and holes shall be in the middle of the top width of cross arm. 2.3 If required by the owner, holes of specified size and spacing shall also be provided for fixing of pole back clamp to suit the pole.
What is the minimum maintained distance between conductors in open wiring method?
In installing an electrical wiring system with the exposed knob and tube wiring method, the distance between conductors should be maintained at a minimum distance of 6 cm.
What is the minimum distance to be maintained from the overhead electric line for rail?
Clearance between the overhead line & railway track: The distance between any of the crossing conductors and the nearest traction mast or structure under the most adverse conditions shall not be less than 6m.
What are the minimum cross section of conductors that are used for?
The minimum cross-sectional area of the conductor, that can be used for power wiring of 1.25 mm2 for copper conductor cables and 1.50 mm2 for Aluminium conductor cables (refer ISI recommendations). Hence VIR or PVC cables of size lower than 3/0.915 mm copper or 1/1.80 mm Al can not be used for motor wiring.
What is the minimum clearance of HV lines from the ground across street *?
ANSWER: 6 m.
What is spacing between conductor?
The two most important spacing distances are the shortest distance through air between any two conductors (clearance distance), and the linear distance traveled over the surface of the PCB between any two conductors (creepage distance). Both of these distances are determined by the voltage used on the PCB.
What is distance between pole to pole?
Pole to pole distance is called ‘span’. The span is dependent on the rating, capacity of the line. Usually for the 100 sq mm conductor size, technically the span should be about 80 to 100 mtrs.
What is the normal distance between two electric pole?
They are typically spaced about 125 ft (38 m) apart in urban areas, or about 300 ft (91 m) in rural areas, but distances vary widely based on terrain. Joint-use poles are usually owned by one utility, which leases space on it for other cables.
What is the minimum distance between two 69 kV power lines?
The peak line-to-line voltage of 69 kV is about 97.6 kV. So about 33 mm would be the minimum distance assuming no switching surges occur. As you might imagine, if the conductors are separated by only 33 mm, the distance that can be spanned between support structures will be very short if conductor movement from wind is taken into account.
What is the minimum distance between two electrodes of 69 kV?
From a purely theoretical standpoint, air has a dielectric strength of approximately 3kV/mm in an air gap between pointed electrodes. The peak line-to-line voltage of 69 kV is about 97.6 kV. So about 33 mm would be the minimum distance assuming no switching surges occur.
How many MW does a 100 km long transmission line deliver?
3) A 3-phase, 50 Hz transmission line 100 km long delivers 20 MW at 0·9 p.f. lagging and at 110 kV. The resistance and reactance of the line per phase per km are 0·2 Ω and 0·4 Ω respectively, while capacitance admittance is 2·5 × 10− 6 siemen/km/phase.
What is the minimum phase-to-phase conductor spacing for transmission lines?
The bottom line is the minimum phase-to-phase conductor spacing for any transmission line depends on the span length between structures and type of insulators used in addition to the applicable electrical safety rules for the region where the line is located.