0
What else can I help you with?
Why transmitting of power at high voltage is economical?
For a given load, the higher the supply voltage, the lower the resulting load current. So, using high-voltages in transmission systems (1) avoid enormous voltage drops along the line, (2) enable cables of realistic cross-sectional area and weight to be used, and (3) minimise line losses. So, high-voltage transmission requires less copper and avoid line losses -resulting in lower costs.
What is the purpose of a transformerin a power grid system?
A transformer changes the electricity from one voltage to another, which allows a high voltage power line to be converted down to a voltage suitable for home usage.
What color is used for phasing medium voltage?
In the electrical trade, there is no such thing as "medium" voltage. Line voltage is broken down into "low" and "high". Low line voltage is 220/110 volt power. In a single phase supply the only required colors are white or grey for the neutral or grounded conductor and green or bare copper for the earth ground, or grounding conductor.In three phase power supplies, low line voltage (220/110) is marked : Phase A -black, Phase B - red, Phase C - blue.In three phase high line voltage (480/277) conductors are marked : A -brown, B - orangeC - yellow. Neutrals are still marked white or grey. White is normally used for low voltage neutrals and grey for high voltage neutrals.In the trade, "low voltage" is considered circuits below 50 volt, such as 12 and 24 volt control circuits, fire alarm, etc.
Why During transmission of power it is transformed as high voltage rather than high current how is this possible as current and voltage are directly proportional?
Voltage and current are actually inversely proportional to one another. The formula P=IV is what you need to look at here, where P is Power, V is voltage, and I is current. Rearranging the equation you will see that V = P/I. You can see that if you increase voltage, while holding power constant, current is reduced. Now, to your question. The losses on a transmission line are proportional to the current flowing on the line, so transmitting at high voltage (and hence low current) is beneficial as it reduces the amount of power that is lost due to resistance in the line itself.
What are the advantages of 750Kv high voltage?
A high voltage like 750kV is used in transmission lines because this reduces the current in the wires for a given amount of power. A reduced current will reduce the power lost in transmission (I^2R).CommentFar more importantly than reducing line losses, it reduces the voltage drop along the line which would, otherwise, be enormous!
Why transmitting of power at high voltage is economical?
For a given load, the higher the supply voltage, the lower the resulting load current. So, using high-voltages in transmission systems (1) avoid enormous voltage drops along the line, (2) enable cables of realistic cross-sectional area and weight to be used, and (3) minimise line losses. So, high-voltage transmission requires less copper and avoid line losses -resulting in lower costs.
Which mode of transmission would result in less energy loss high current and low voltage or low current and high voltage Explain your reason?
low current high voltage power dissipation in power line = I2R the resistance of the power line is hard to reduce, especially when it is a long transmission line. but reducing the current through the line reduces losses as the square, a dramatic savings. reducing voltage would have no effect and would dramatically increase losses due to increase in current to try to deliver same power.
What is the purpose of a transformerin a power grid system?
A transformer changes the electricity from one voltage to another, which allows a high voltage power line to be converted down to a voltage suitable for home usage.
Is 220V line voltage or phase voltage?
Phase, if you are referring to line, as power line from pole.
What does inductive load effect on High Voltage transmission line?
the inductive load which is generally use in high voltage transmission line known as transformer. the transformer transform the high voltage to low voltage.
What color is used for phasing medium voltage?
In the electrical trade, there is no such thing as "medium" voltage. Line voltage is broken down into "low" and "high". Low line voltage is 220/110 volt power. In a single phase supply the only required colors are white or grey for the neutral or grounded conductor and green or bare copper for the earth ground, or grounding conductor.In three phase power supplies, low line voltage (220/110) is marked : Phase A -black, Phase B - red, Phase C - blue.In three phase high line voltage (480/277) conductors are marked : A -brown, B - orangeC - yellow. Neutrals are still marked white or grey. White is normally used for low voltage neutrals and grey for high voltage neutrals.In the trade, "low voltage" is considered circuits below 50 volt, such as 12 and 24 volt control circuits, fire alarm, etc.
Why telephone line has negative voltage?
A negative live voltage is used to prevent electroytic corrosion on the copper wires.
Why During transmission of power it is transformed as high voltage rather than high current how is this possible as current and voltage are directly proportional?
Voltage and current are actually inversely proportional to one another. The formula P=IV is what you need to look at here, where P is Power, V is voltage, and I is current. Rearranging the equation you will see that V = P/I. You can see that if you increase voltage, while holding power constant, current is reduced. Now, to your question. The losses on a transmission line are proportional to the current flowing on the line, so transmitting at high voltage (and hence low current) is beneficial as it reduces the amount of power that is lost due to resistance in the line itself.
Which component is designed to remove high voltage spikes and surges from a power line so that they don't damage a computer system?
Which component is designed to remove high-voltage spikes and surges from a power line so that they do not damage a computer system?
The voltage present in a power grid line is more than?
The voltage present in a power grid line is more than enough to kill you.
What are the advantages of 750Kv high voltage?
A high voltage like 750kV is used in transmission lines because this reduces the current in the wires for a given amount of power. A reduced current will reduce the power lost in transmission (I^2R).CommentFar more importantly than reducing line losses, it reduces the voltage drop along the line which would, otherwise, be enormous!
What is a power line versusa neutral line?
A power line carries electrical current from the power source to the load, delivering energy for use in homes and businesses. In contrast, a neutral line provides a return path for the current, completing the electrical circuit and ensuring safety by stabilizing the voltage. While the power line typically carries high voltage, the neutral line is grounded to prevent electrical shock and maintain a balanced system.
