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 conductor spacing?
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 should be the spacing between the two conductors?
| Over head Line Across Street | Low and Medium Voltage 5.8 Meter | Low/Medium /HT line up to 11KV If Bare Conductor 4.6 Meter | Low/Medium /HT line up to 11KV If Insulated Conductor 4.0 Meter | Above 11 KV Line 5.2 Meter |
|---|
What is the minimum distance to be observed between conductors?
| 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 are the factors on which conductor spacing and ground clearance depend?
Firstly, for most of the length of a span, the conductor clearance is higher than it is at the lowest point. Secondly, the actual ground clearance of the conductors depends
on their temperature
.
What should be the spacing between the two conductor is the working voltage is 11kv?
Right Answer is: B The spacing between the two conductors if the working voltage is 11 KV is
101 mm
.
Which tool is used to measure the size of the conductor?
American wire guage
is used to measure the size of conductor.
What is the minimum safe distance from power lines?
Ensure that no part of the equipment, load line, or load (including rigging and lifting accessories), gets closer than
20 feet
to the power line by implementing the measures specified in subsection (b).
What is the safe distance from 11kV power lines?
As per the Indian Electricity Act, buildings should maintain a horizontal distance of
1.2 metres
from 11kV lines and 4 metres from 66kV lines.
What is the distance between two transmission towers?
To install transmission towers, workers typically build or improve a road to create access to the sites. Then workers prepare and pour concrete foundations, connect partially assembled towers and use cranes to complete the towers, which will be
900 feet to 1,500 feet apart
.
What is the minimum ground clear distance for 11KV overhead line?
| 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 are the factors affecting the conductor?
- material, eg copper, has lower resistance than steel.
- length – longer wires have greater resistance.
- thickness – smaller diameter wires have greater resistance.
- temperature – heating a wire increases its resistance.
What is double circuit line?
Double Circuit Transmission Line refers to
the arrangement in which a total of six conductors are provided to make two different Transmission Circuit
. In Double Circuit Transmission Line, there are two circuits each consisting of three conductors corresponding to three phases.
What voltage is the H type of poles used?
H type of poles used for
130 k V
.
What is the voltage range of extra high tension cable?
The accelerating voltage for a television cathode ray tube may be described as extra-high voltage or extra-high tension (EHT), compared to other voltage supplies within the equipment. This type of supply ranges from
5 kV to about 30 kV
.
What is the minimum clearance of HV lines from the ground across street *?
ANSWER:
6 m
.
