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Is it a problem to construct a home near a 100kv substation voltage line?
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What are the differences between high voltage switch gear and medium voltage switch gear?
a switchgear is a term used with the electric power distribution system, and is basically a large switch or set of switches used in switching very high voltages at very high currents and can occasionally have arc overs, though they are ushually supressed by a number of safety measures. medium voltage probably being under 100KV but more than 5KV, but that's just a guess as to voltage ratings...
Can you back feed a three phase 480v transformer on the secondary side and get 480?
These transformers are usually reciprocal, and don't care which side you feed. Some caveats may apply if there are cooling fans, the other voltage is 100KV, this is connected as a wye to high-delta converter and so on.
What would happen if electric power were transmitted from the generating plant to your home at 120 V?
It just plain wouldn't make it. The voltage drop across the lines would be far too great. Instead, they send it down the lines at between 100kV and 800kV, stepping it down at various points along the way.
A transformer is used to step down a voltage of 11kv to 220 volts. Given that the primary coil has 3200 turns what is the number of turns on the secondary coil?
Your 11 kv to 220 volts represents a 50 to 1 stepdown. (There is 50 times more voltage in the primary than in the secondary.) You'll have to have a 50 to 1 turns ratio. That means 1/50 of the number of turns in the primary will be in the secondary, and that is 64 turns.
How do you calculate transformer primary voltage and secondary voltage when you used the tap changer in transformer?
Transformer LTC's are spec'd as being a certain percentage of the total - very often +/- 10%. So if you have a transformer with a primary of 100kV and a secondary of 30kV nominal with a lowside LTC, the LTC can adjust the lowside from 27kV - 33kV. Depending on the type of LTC, there may be different number of steps for this 20% range. Usually these are broken up evenly, so if you have 33 steps - up 16, down 16, and a nominal tap, each tap is 1/16th of 10 percent of nominal lowside voltage; in this case 187.5 volts.
How is the voltage for homes shipped to a home?
Voltage isn't "shipped", really. Generator terminal voltage is typically in the range of 10-30kV; they are connected to the bulk electric system by step up transformers that convert this 10-30kV into voltage in excess of 100kV for power transmission. Near your home, this voltage is again stepped down to sub transmission voltage levels, then distribution voltage levels. The small power lines near your home are probably distribution level power lines (often 2 - 20kV); these will have a center tapped step down transformer to connect your home, at 120volts, to the grid.
What are the differences between high voltage switch gear and medium voltage switch gear?
a switchgear is a term used with the electric power distribution system, and is basically a large switch or set of switches used in switching very high voltages at very high currents and can occasionally have arc overs, though they are ushually supressed by a number of safety measures. medium voltage probably being under 100KV but more than 5KV, but that's just a guess as to voltage ratings...
Can you back feed a three phase 480v transformer on the secondary side and get 480?
These transformers are usually reciprocal, and don't care which side you feed. Some caveats may apply if there are cooling fans, the other voltage is 100KV, this is connected as a wye to high-delta converter and so on.
What voltage is electricity generated in power stations?
There is no simple answer because there is no set voltage, it depends on the design of the power station. What you can say is that it can be anywhere from a few thousand volts (kV) to around 30kV at the actual generator output but before it leaves the plant it's usually stepped up with huge power transformers to between 100kV to over 500kV, depending which country you're in and which part of the grid you are looking at.
What would happen if electric power were transmitted from the generating plant to your home at 120 V?
It just plain wouldn't make it. The voltage drop across the lines would be far too great. Instead, they send it down the lines at between 100kV and 800kV, stepping it down at various points along the way.
A transformer is used to step down a voltage of 11kv to 220 volts. Given that the primary coil has 3200 turns what is the number of turns on the secondary coil?
Your 11 kv to 220 volts represents a 50 to 1 stepdown. (There is 50 times more voltage in the primary than in the secondary.) You'll have to have a 50 to 1 turns ratio. That means 1/50 of the number of turns in the primary will be in the secondary, and that is 64 turns.
How many voltage will pass through the high tension line?
It depends on the line, but AC high tension lines are typically between 100kV to 750kV while some DC high tension lines are as high a 1MV.Another AnswerVoltage doesn't 'pass through' a line. It appears between, or across, adjacent conductors. It's CURRENT that 'passes through' a line.
How do you calculate transformer primary voltage and secondary voltage when you used the tap changer in transformer?
Transformer LTC's are spec'd as being a certain percentage of the total - very often +/- 10%. So if you have a transformer with a primary of 100kV and a secondary of 30kV nominal with a lowside LTC, the LTC can adjust the lowside from 27kV - 33kV. Depending on the type of LTC, there may be different number of steps for this 20% range. Usually these are broken up evenly, so if you have 33 steps - up 16, down 16, and a nominal tap, each tap is 1/16th of 10 percent of nominal lowside voltage; in this case 187.5 volts.
What is the function of TV flyback?
The TV flyback transformer is obsolete in modern television sets and is not used.In the old cathode ray tube (CRT) television sets the flyback transformer had two functions:generate a large and powerful current pulse to drive the horizontal deflection coil in the yoke around the neck of the tube to create a quick horizontal retrace between sweep linesusing a large secondary autotransformer winding produce a very high voltage (i.e. 15KV to 100KV) rectified by a high voltage diode needed by the anode of the CRT to accelerate the electron beam
Can the impulse withstand voltage be affected by altitude?
Yes. The IEC 60071.1 Std states a diminish withstand of aprox of 1% every 100mts above 1000mts. For example: for a 13.8kV system the insulation level should be of 95kV (interior). If the installation is going to be at 1,500mts then de minimum insulation level of your equipment must be: 95kv/(1-0.01*(500/100)) = 100kV BIL. The next std value for BIL is 125kV.
What is the relationship with leakage current and rated voltage of high voltage surge arrester?
Not much actually; Electrons escaping through insulating material is defined as leakage current. Insulation has both resistsance and capacitance abilities, which means current can flow through both paths. Given the nature of current it will find the quickest path. A surge arrestor dissipates (discharges) voltage spikes through a series of resistors and diodes. A surge arrestor is commanly used in applications above 100kv. Dnot confuse a surge arrestor with a surge protector, whch is basically a circuit breaker. FIRST OF ALL THERE IS NO PERFECT INSULATOR AND ELECTRONS DO NOT ESCAPE BUT THE EMF IF HI ENOUGH WILL FIND A PATH TO BLEACH ELECTRONS BECAUSE OF DIRT MOISTER WHATEVER.
Does the ac generator produce the 11kv or we get the 11kv via step up transformer?
I've seen AC generators that have output voltages from 120v to near 30kV. Likely you get your electricity from a large generator, that is connected to a step up transformer (few kV - 30kV stepped up to transmission voltage levels of 100kV - 750kV), which transmits the power through the bulk electric system, then down through step down transformers, through subT and distribution networks to your home.
