single phase line called 240v while 3 phase 440v . why?

Is it one phase count neutral?

  • Sanjay Kumar
  • Sanjay Kumar
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  • 13 Jun
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  • 18844 Views
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  • 155 Answers

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  • 10

    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.

    • Voted By:
    • Punam ,
    • Sagar ,
    • Hriday ,
    • Monu ,
    • Govind ,
    • Ansari ,
    • Karthikeyan ,
    • Anmol ,
    • Vishnu ,
    • Poornima

  • 4

    ​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 660v

    • Voted By:
    • Monu ,
    • Govind ,
    • Somesh ,
    • Karthikeyan

  • 4

    Because in signal phase u take voltage between phase and neutral. In a three phase u take voltage between phase to phase so that

    • Voted By:
    • Anirban ,
    • Monu ,
    • Govind ,
    • Sumit ,
    • Avinash

  • 3

    BECAUSE IN THREE PHASE WE CALCULATE LINE TO LINE VOLTAGE, FOR CALCULATING THREE PHASE VOLTAGE WE USE ROOT THREE

    • Voted By:
    • Monu ,
    • Govind ,
    • Veerababus

  • 3

    yes. one phase count neutral.

    • Voted By:
    • Monu ,
    • Govind ,
    • Sumit

  • 2

    three phase voltage is 440 voltage. but for per phase it is divided by root 3.that is 240 volt

    • Voted By:
    • Monu ,
    • Govind

  • 2

    because it supplies more load

    • Voted By:
    • Monu ,
    • Govind

  • 2

    It's 415 V not 440V) its root*3 times single phase vol.

    • Voted By:
    • Monu ,
    • Govind

  • 2

    in 1 ph vtg of phase and neutral

    • Voted By:
    • Monu ,
    • Govind

  • 2

    In 3phase 3single phases are there.so 2single phase across the voltage 440v

    • Voted By:
    • Monu ,
    • Govind

  • 2

    According to I.E.R.

    • Voted By:
    • Monu ,
    • Govind

  • 2

    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.

    • Voted By:
    • Monu ,
    • Govind

  • 2

    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.

    • Voted By:
    • Monu ,
    • Govind

  • 2

    230 v

    • Voted By:
    • Monu ,
    • Govind

  • 2

    single phase using domestic purpose low capacity of loads and lighting purpose to use neutral to closing circuit loop.

    • Voted By:
    • Monu ,
    • Govind

  • 2

    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 phases

    • Voted By:
    • Monu ,
    • Govind ,
    • Anmol

  • 1

    1phase voltage is between line and natural, and in 3 phase voltage is between 2 line (phase)

    • Voted By:
    • Govind

  • 1

    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 system

    • Voted By:
    • Govind

  • 1

    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.

    • Voted By:
    • Govind

  • 1

    Single phase means one phase and neutral it'svoltage is 240 but 3 phase means 3 phase wires it's voltage is 440

    • Voted By:
    • Govind

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