What is nominal line voltage?
'Nominal' means 'named'. So a 'nominal' voltage is the named voltage of a system. For example, when we talk about a 120-V or 240-V system, we are describing their nominal values, not their actual values which can change from moment to moment.
15 people found this useful
Can i use a circuit breaker with 420V nominal voltage in 520V line voltage nominal current of circuit breaker is 1600A if I can how much current can pass from this circuit breaker?
NO! NO! NO!. The circuit breaker must be rated for the line voltage used. Exceeding this limit can cause catastrophic failure!. If you are really working on a 1600A bus, sto…p right now, ang go hire a professional! Your question indicates you are not qualified to work on this gear. YOU ARE GOING TO KILL SOMEBODY .. I'm not kidding about this. A breaker that is applied beyond its rating can arc over, and the resulting arc-flash can punch right through the panel cover, spraying vaporized metal on anyone unfortunate enough to be standing there. A 1600A bus can have a fault current of 20,000A OR MORE.. This is not something to even think about working on unless you are trained and absolutely know what you are doing!
It varies from country to country. In the USA it is 110 volts, in the UK it 230 volts +/- 10%/6%.. In practise in the UK it is 240s volt +/- 6%, the slightly odd looking spec…ification allows harmonisation with rest of Europe.. In all these cases, the mains voltage is supplied AC (alternating current) and the voltage is given as root mean square (RMS). The peak voltage in the UK is 384 volts.
The word nominal means the lowest possible safe amount. So, nominalcurrent or nominal voltage is the lowest amount necessary toperform an electrical function like keeping a li…ght turned on. Answer The original answer is incorrect. ' Nominal ' simply means' named '. So a 'nominal voltage' is the 'named voltage', asopposed to an 'actual voltage'. For example, the nominal voltage ofresidential supplies in the UK is 230 V; however, this value isallowed to vary between +10/-6% of the nominal voltage. In otherwords, a nominal voltage of 230 V may vary between 216 V and 253 V.
It is a rated value
A zener diode has a voltage when it reachesbreak over it may be 5v 12v or other voltage as manufactured. The manufacture will produce a 5v zener or is it? This voltage can ch…ange from device to device but the mean or nominal voltage will be as close as 5v as possible. So when buying a 5v zener do not expect 5v absolute but a nominal 5 v . ZENERS are designed for a specific voltage [ THEREFORE NOMINAL] as mentioned above . depends on the voltage required it can be bought within a specific voltage -/+ a % of the breakdown
It is the rated voltage of an electric equipment. It is the voltage at which the device is designed to operate. Another Answer Nominal means 'named'. So a nominal volta…ge is the 'named' voltage. For example, the nominal voltage of the supply system in Britain is 230 V. But its actual value is allowed to vary between 216.2 V and 253.0 V.
The rated voltage of a motor listed on the nameplate is called the terminal voltage. This indicates the actual voltage on the motors terminals at which at which the manufactur…er designed to operate. Whereas, Nominal voltage is the design or configuration voltage of the electricity distribution system.
Yes. By definition, a line-to-line voltage is indeed called a line voltage . For delta-connected , three-wire, systems comprise three line conductors. The line voltage …is numerically equal to the phase voltage. For wye-connected , four-wire, systems comprise three line conductors and a neutral conductor. Any line-to-neutral voltage is called a phase voltage. The line voltage is 1.732 times the value of the phase voltage.
The conductors between a three-phase supply and a three-phase load are called line conductors not phase conductors, and the voltage measured between them are line voltage…s , not phase voltages. In the case of a delta supply, the line voltages are numerically equal to phase voltages, but the name remains the same! I have to admit that many people call line conductors 'phase conductors', but many people also say 'irregardless' -that doesn't make it a real word!!
The term, 'nominal', simply means 'named'. For example, the nominal supply voltage for a residence in the UK is 230 V . But this doesn't mean that the actual supply volta…ge is 230 V, because the supply voltage is allowed to vary by -6% and +10% of the nominal voltage. In other words, the actual voltage could be anywhere within the range of 216.2 V to 253 V. In fact, during periods of heavy load, the actual voltage would tend towards the lower end of this range, whereas during periods of higher load, the actual voltage would vary towards the upper end.
The three 'hot' conductors supplying a three-phase system are called ' line conductors '. A line voltage is the voltage between any pair of line conductors. . In a 'delta'… connected system, phases are the loads connected between the three line conductors . So, for a delta-connected load, the phase voltages correspond to the line voltages. . In a 'star' or 'wye' connected system, phases are the loads connected between the line conductors and a neutral conductor . So for a star-connected system, the phase voltages exist between any line conductor and the neutral conductor, and equate to 0.577 x the value of a line voltage (or, if you prefer, a line voltage is 1.732 x a phase voltage). . To summarise, for delta connected systems, a line voltage is measured between line conductors, and a phase voltage is numerically equal to that line voltage. For star-connected systems, line voltages exist between line conductors, whereas phase voltages exist between any line conductor and a neutral conductor.
Nominal voltage is the 'named' voltage -for example, the nominal supply voltage in the UK is 230 V. But this is not necessarily the actual voltage at a particular time. A n…ominal voltage is normally expressed together with the percentage by which it is permitted to vary from that stated value. For example, in the UK, the nominal voltage is expressed as: 230 V +10% / -6% --in other words it is allowed to vary between 216.2 and 253 V. The term, operating voltage , isn't actually defined anywhere, but is usually taken to mean the actual voltage supplied to a device at any particular instant, and this should always fall within the allowable range of the supply system's specified nominal voltage. The operating voltage can be found simply by measuring it with a voltmeter.
In Home Electricity
In a 3 phase system, the voltage measured between any two phase is called line to line voltage. And the voltage measured between line to neutral is called phase to neutral (…line to neutral) voltage. Answer There is no such thing as a 'phase-to-phase' or a 'phase-to-neutral' voltage. The correct terms are 'line-to-line' and 'line-to-neutral'. The voltage between any two line conductors is called a line voltage . In a three-phase , three-wire , system, the line voltage is numerically equal to the phase voltage. In a three-phase , four-wire , system, the voltage between any line conductor and the neutral conductor is called a phase voltage. The line voltage is 1.732 times larger than the phase voltage.
In Home Electricity
It depends on the type of three-phase system. If it's a three-wire system , then the phase voltage is numerically equal to the line voltage. If it's a four-wire system , the…n the phase voltage is numerically equal to the line voltage divided by 1.732 -in your example, this works out to be 5.77 V.
In Electrical Engineering
The voltage in the middle of line and impartial is known as the stage voltage. where the voltage between two lines called the line voltage.
In United States of America
AC current to residences in North America is 110 volts at 60 hertz, but 220 V and 440 V are available for industries that need it.
Line voltage (line-to-line voltage) in a polyphase system is the voltage between two given phases. The potentail difference between the line and nuetral ...230 volts. Bet…ween lines is 415 volts