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The electrical term for this condition is called an unbalanced load.
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What should you be able to do in post reading phase?
summarize what you have read.
What is the voltage between neutral and earth if neutral is broken?
Normally, it is zero.Except in very special cases, the neutral and ground (earth) conductors in a building are tied together at one point in the system, so ideally the voltage difference would be zero. The reason that it might not be zero is there is current flowing in the neutral and, thus, voltage drop in the neutral conductor. Since the ground conductor normally never has current flow (unless there is a fault), there will be a difference in voltage equal to the voltage drop across the neutral conductor, which varies with load (current).It should be 0V , but as per our earth pit maintaining that voltage will be varied even also not exceed 5V.
What effect does the power factor obtained from the reactive loads have on the wattmeter reading being negative?
A wattmeter measures the supply voltage and the in-phase component of the load current and, therefore, its reading is unaffected by the power factor of the load. In other words, it will always read true power regardless of power factor.If it is reading backwards, it is because the polarity markings have been ignored and either the voltage coil or the current coil have been connected the wrong way around.
How many amps are in 400 horsepower with 480 volt three phase?
This might help you. First and foremost is the information the manufacturer puts on the nameplate of the motor. Second, the generic amperage can be found on motor charts that are on the Internet. Third you can use a formula to find the approximate amperage. HP = Amps x Volts x 1.73 x %Eff x pf/746. Transposed for Amperage, Amps = HP x 746/Volts x 1.73 x %Eff x pf. Use power factor = .9. Eff = 746 x Output HP/Input watts use 1.5. For estimating a 400 HP motor running on 480 volts. Amps = 400 x 746/ 480 x 1.73 x 1.5 x .9 = 298400/747.36 = 399.27 amps. See how much easier it is to read the nameplate.
Why does half of my house have electricity and the other half doesn't with no circuit breakers poped?
as an electrician i would first check the main breaker with a rated voltage tester for voltage i would first ckeck the meter side by placing one tester lead on one of incoming phases or wire and place second lead on the other phase or other wire. i should read 240, or 230, or 220 volts depending on where the taps are in the transformer. if not call the power company. if it does read any of them voltages i would then check the load side of the main breaker by putting my leads on one breaker and the one right below it generally every other breaker is a different phase again i should read 240 volts or close. if not the main breaker may be bad. if you know what breaker or circuit its on you could test it by placing one lead on the screw where the wire is and the other on the neutral or ground bar here you should read 120 volts or close if not breaker is bad. it maybe as easy as tightening the screw or screws so shut the breaker off first and then tighten.
If in the three phase connection phase to phase voltage is 400v what will be the phase neutral voltage?
The formula to use is, phase voltage /1.73 = phase to neutral (ground) voltage.CommentThere is no such thing as a 'phase to phase', or 'phase to neutral' voltage. The correct terms are 'line to line' and 'line to neutral'. So the above answer should read: line voltage/1.73= line to neutral voltage = phase voltage.
Which boot files initiate the Windows 9x protected load phase and read the file system?
win.com
What voltage should 208 3 phase leads read?
From line-to-line (any two of the three leads) voltage or 'line voltage', the voltage is 208 V. The line-to-neutral (one of the three leads and the neutral conductor), or 'phase voltage', is 120 V.
How is a frequency table different from a line plot how are they similar?
How is a frequency table different from a line plot how are they similar? Read more:
How do you measure voltage in a 3 wire single phase system?
For a three-phase, four-wire, system, the line voltage is measured between any pair of line conductors, while the phase voltage is measured between any line conductor and the neutral conductor. For a three-phase, four-wire, system, the line voltage is numerically-equal to the phase voltage, and both are measured between any pair of line conductors.
Where the volatage is measured in the three phase systems?
You can use wattmeters to measure three-phase power. According to 'Blondel's Theorem', you can use one less wattmeter than there are conductors connecting the load to the supply. So, for a three-wire system, you can use two wattmeters but for a four-wire system, you must use three. Check out 'three wattmeter method' and 'two wattmeter method' on the internet to find the necessary connection diagrams.
When you read the volts on a 3 phase linethat should be 230 volts you get 142 volts at each line?
It's hard to understand what you're trying to ask. There could be multiple reasons why you aren't getting the correct voltage, ranging from testing for DC when you should be testing for AC to accidentally measuring the RMS value. Most likely, however, is that you're not measuring with a balanced, three phase load. Tri-phasic power works by splitting the voltage into three separate sin waves that are phase shifted by 120 degrees in relation to each other. Therefore one stays a normal sin wave, one becomes a sin wave phase shifted to 120 degrees, and the other phase shifts to -120 degrees. This means that at any given instantaneous time the average voltage between them is approximately the value of the DC offset. This is only true if you're measuring them with a balanced three phase load, however. If you measure one line at a time, you're going to get erroneous answers. You need to measure tri-phasic power with a balanced three phase load.
How do you covert 120 volts to 208 volts?
Single phase or three phase? 120/208 would be measured hot to ground for 120 and hot to hot (phase to phase) for the 208 reading. Any hot to ground will read 120 and any two phases together will read 208.
Why does the line of best fit only give an estimate?
Because ever line is different and you can only read off your line in the graph.
How do you measure amps on a 208V single phase circuit with a clamp on amp meter?
Clamp the meter around the energized conductor that is connected to the load to be measured and read the amperage off of the dial face of the meter.
If you are measuring the voltage of a three phase power system you take only two phase in account then why there is a need for third phase?
Answer Take all phases into account. Voltage is measured between two phases of the three phases at one time, so what this means is this...first you read voltage between line 1 and line 2...then you read voltage between line 2 and line 3...and then from line 1 to line 3. Each phase of a 3 phase system is 120 degrees from the other in a 360 degree pattern. It takes all 3 phases to start a 3 phase motor but can run on two. If a 3 phase motor tries to start on two phases it is refered to as single phasing and can damage the motor.Another AnswerFirst of all, let's get the terminology correct. The wires that join a three-phase load to its supply are called 'LINE conductors', not 'phase conductors'! This is very important. Phases, which are normally inaccessible, are either the generator windings, the transformer windings, or the individual loads, connected to the line conductors -this can make measuring phase voltages very difficult unless you can access the interior of these machines/loads.The voltage of a three-phase system is normally defined in terms of its line voltage, not its phase voltage, so one normally measures its line voltage by connecting a voltmeter between any two line conductors or terminals. As the line voltages are determined by the supply system, all line voltages should be the same, regardless of which line conductors you choose to place the voltmeter between.The important thing, however, and this is something your voltmeter will NOT tell you, is that the three line voltages are out of phase with each other -each lagging its predecessor by 120 electrical degrees. And this is important, because it is the phase displacement between these voltages, not the magnitude of each voltage, that allows -for example- a three-phase motor to self-start.
Which poem has this phase You taught me language and my profit on it is that i know how to swear?
The line is from The Tempest by William Shakespeare, it should read;You taught me language; and my profit on'tIs, I know how to curse
