How much current does 11 kV line flow?
An 11 kV distribution circuit may carry 150 A in each of its three phases, thus transmitting a power of 3 MW.
What is the difference between line current and phase current?
Line current is the current through any one line between a three-phase source and load. Phase current is the current through any one component comprising a three-phase source or load.
Is 11kV line or phase voltage?
For instance, in an 11kV three-phase system, the voltage between any two live conductors gives a line voltage of 11kV while the voltage between any live conductor and neutral (or earth) gives a phase voltage of 6.35kV.
What is the electrical difference between a line and phase voltage?
For any polyphase system, Line voltage is defined as the voltage between two given phase. Whereas the phase voltage is the voltage between the given phase and neutral. The relation between line voltage and phase voltage are proportionate.
Why is 11kV 33kV 66kV?
Sending Voltage = 10kV x 10% = 11kV. While the receiving end voltage are 10kV due to voltage drop.
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If it is not related to the form Factor, What is it then?
| Sending Voltage | Receiving Voltage |
|---|---|
| 20kV x 10% = 22kV | 20kV |
| 30kV x 10% = 33kV | 30kV |
| 60kV x 10% = 66kV | 60kV |
How do you calculate kV from current?
Calculation with line to line voltage
- I(A) = 1000 × S(kVA) / (√3 × VL-L(V) )
- amps = 1000 × kVA / (√3 × volts)
- A = 1000 ⋅ kVA / (√3 × V)
- I = 1000 × 3kVA / (√3 × 190V) = 9.116A.
How do you convert phase current to line current?
Line current to phase current calculator:
Phase current I(P) in Amps is equal to line current I(L) in Amps divided by root 3. Example: Calculate the phase current of the delta connected alternator output line current of 1500 Amps. I(P) = 1500 / 1.732 = 866 Amps.
What is the relationship between line current and phase current?
Here, the line and phase voltage are related as follows: Vline=Vphase; While line current = √3× phase current.
Why 11kV 22KV 33KV 66kV 132KV?
For this reason, they transmit 10% extra voltage. For example: Sending Voltage = 10kV x 10% = 11kV.
If it is not related to the form Factor, What is it then?
| Sending Voltage | Receiving Voltage |
|---|---|
| 20kV x 10% = 22kV | 20kV |
| 30kV x 10% = 33kV | 30kV |
| 60kV x 10% = 66kV | 60kV |
| 120kV x 10% = 132kV | 120kV |
How much KV is a three-phase?
At a substation, the level of secondary transmission voltage (132KV, 66 or 33KV) is reduced to 11 kV (in a three-phase three-wire overhead system) by step down transformers.
How do you calculate phase and line current?
Phase current I(P) in Amps is equal to line current I(L) in Amps divided by root 3. Example: Calculate the phase current of the delta connected alternator output line current of 1500 Amps. I(P) = 1500 / 1.732 = 866 Amps.
Why power generation is 11kV?
Electricity is generated at 11000 V or 11 kV at the generating stations. It is cheaper to generate electricity at a relative lower voltage and then step it up for transmission. Hence, most power generating plants are designed to operate at 11kV across the world.
What distance is safe for 11 kV power lines?
1.2 metres
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.
How do you calculate current per phase?
Divide the load by the voltage x route 3 x power factor. So 60000/ ( 440 x 1.732 x 0.8) = 98 . 41A per phase.
How many kVA is 40 amps?
| Generator KVA Rating to Amperage Conversion Chart 80% POWER FACTOR | ||
|---|---|---|
| kV•A | kW | 240V |
| 31.3 | 25 | 75.5 |
| 37.5 | 30 | 90.3 |
| 50 | 40 | 120 |
Why line current is root 3 times of phase current?
It actually simply follows from the derivation from how three phase circuits are defined and set up. If you have the three phases 120 degrees apart, and an AC signal is flowing in it, in the way as defined by 3-phase, then the two types of configurations equation using the under root three factor. Hope this helps..
How many Amps is a 3-phase?
If a three-phase supply is available, then the 24,000 watts are divided by 3, meaning that 8000 watts is being used per phase. Now the current per phase is also down to a third of what it would be with a single phase supply (about 30 amps per phase, rather than 100).
Is 3 phase 415v or 440V?
As shown in the figure below, the 3 phase supply has three wires (RYB). The voltage across any one phase and neutral is 220V, and the voltage across the 3 phase is 440V because we check the voltage between any two-phase RY or YB or BR.
How many amps is a 3 phase?
Why 11kv 22kV 33kv 66kV 132kV?
Is 11kv high tension line?
LT line is usually used in domestic and low-power motor using industries. and voltage in the LT line can be around 220 Volts for a single-phase connection and 440 Volts for a three-phase connection. the HT line in the distribution system means high tension or voltage line. voltage in ht can be 33kv 11 kv or 6.6 kv.
What is the minimum height for power lines?
According to the National Electrical Safety Code, telephone lines must be at least 14 feet above the ground and electrical lines must be at least 15-½ feet above the ground.
What is the ground clearance for voltage class up to 11KV 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 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 current of 3-phase?
Three-phase power works by the voltage and currents being 120 degrees out of phase on the three wires. As an AC system it allows the voltages to be easily stepped up using transformers to high voltage for transmission, and back down for distribution, giving high efficiency.