Which is correct for long transmission line?
Table of Contents
- 1 Which is correct for long transmission line?
- 2 How do you classify the transmission line in to short medium and long lines?
- 3 What is short transmission line?
- 4 What is the length of a long transmission line?
- 5 What is the length of the long transmission line?
- 6 What is the length range short transmission line?
Which is correct for long transmission line?
Explanation: Transmission lines having length more than 200 kilometres are categorised as long transmission lines. Transmission lines having length less than 200 kilometres are medium transmission lines.
How do you classify the transmission line in to short medium and long lines?
Medium transmission line – The line length is between 60 km to 160 km and the line voltage is between 20kV to 100kV. Long transmission line – The line length is more than 160 km and the line voltage is high greater than 100KV.
Which relay is used for short transmission line?
Reactance relay
Reactance relay is used for the phase faults in a short transmission line.
What is length of long transmission line?
Long transmission lines: Long transmission lines are generally having a physical length of more than 160 km and a wavelength of more than 10000 km. In the long transmission line, the line constants like resistance, inductance, capacitance, and conductance are uniformly distributed over the entire length of the line.
What is short transmission line?
A short transmission line is defined as a transmission line with an effective length less than 80 km (50 miles), or with a voltage less than 69 kV. Unlike medium transmission lines and long transmission lines, the line charging current is negligible, and hence the shunt capacitance can be ignored.
What is the length of a long transmission line?
Long transmission lines: Long transmission lines are generally having a physical length of more than 160 km and a wavelength of more than 10000 km.
Which relays used on long transmission line?
Important Points: Impedance relay is a voltage restrained overcurrent relay. Reactance relay is an overcurrent relay with directional restraint. Mho relay is a voltage restrained directional relay….
| Transmission line | Length & Operating voltage | Distance Relay |
|---|---|---|
| Long-line | (>200) km (>100) kV | Mho relay |
What is a short transmission line?
What is the length of the long transmission line?
What is the length range short transmission line?
3 Different Types of Transmission Lines on the Basis of Length
| Class | Length |
|---|---|
| Short transmission line | Up to 80 km (Up to 50 miles) |
| Medium transmission line | 80 – 240 km (50 – 150 mile) |
| Long transmission line | Above 240 km (> 150 miles) |
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