single phase line called 240v while 3 phase 440v . why?
Is it one phase count neutral?
- Sanjay
- 01 Jan
- 181 Answers
181 Answers
181 Answers
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In three phase power line, each phase is 120 degree from the other phase.therefore, when we draw a graph of phases then two phases have positive values then at the same time the third one has negative value so we can calculate and use only two phases at a time.all three phases changes their position every time so the two phase may be phases 1 &2/phases 1&3 or phases 2&3 gives the values and at the same times phase 3 or 2 or 1 will be at negative interval respectively so cannot be calculated or contribute the value. that's the reason we use 440v instead of 660vModal content
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- somesh
- karthikeyan
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BECAUSE IN THREE PHASE WE CALCULATE LINE TO LINE VOLTAGE, FOR CALCULATING THREE PHASE VOLTAGE WE USE ROOT THREEModal content
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Because in signal phase u take voltage between phase and neutral. In a three phase u take voltage between phase to phase so thatModal content
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- avinash
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yes. one phase count neutral.Modal content
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because it supplies more loadModal content
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It's 415 V not 440V) its root*3 times single phase vol.Modal content
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in 1 ph vtg of phase and neutralModal content
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In 3phase 3single phases are there.so 2single phase across the voltage 440vModal content
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The voltage between phase and neutral is called phase voltaltage.The voltage betwee two line is called line voltage .3 phase system is expressed with line voltages. The line votage is 440 volt. Also the voltage between any one phase and neutral for a 3 phase system is 240 volts.Modal content
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440V in 3 phase system is line to line voltage if you calculate per phase voltage then you will get approximate same value as for 1 phase system.Modal content
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230 vModal content
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single phase using domestic purpose low capacity of loads and lighting purpose to use neutral to closing circuit loop.Modal content
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single phase is 240v because in every phase there is 240v and single phase is normally a phase and neutral while 3 phase uses all the phasesModal content
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single phase line is 90 degree the three phase line is 120 degree out of phase since three phase wire can be represented by two ways star and Delta while Delta connection has no netural bt star connection has neutral three phase line is nothing but a 3 single phase line the single phase line is used for domestic use and three phase line is used in industrial applicationModal content
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According to I.E.R.Modal content
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1phase voltage is between line and natural, and in 3 phase voltage is between 2 line (phase)Modal content
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Because 440 is the line voltage of 3 phase And line voltage is equal to √3 times of phase voltage in a 3 phase star connected system single phase 240 v is phase voltage of 3 phase systemModal content
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Voltage are added with vector summation. In single phase, Voltage = 230 volts In 3 phase , line voltage in star connection is √3* phase voltage = √3 *230 volts = 400 volts. In 3 phase , line voltage in delta connection is 230 only.Modal content
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Single phase means one phase and neutral it'svoltage is 240 but 3 phase means 3 phase wires it's voltage is 440Modal content
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