phase sequence (ee411l)

7/17/2019 Phase Sequence (EE411L)

http://slidepdf.com/reader/full/phase-sequence-ee411l 1/7

Phase SequenceEXPERIMENT NO. 2 GROUP NO. 1

ACOT, KRYSMY

ALCANTARA, XAVIE

ALDANA, KENNET

APEROCHO, RO



Practically all electric power is generated and distributed by the

industry as a POLYPHASE system of voltages. he most common

is the H!EE PHASE system at the fre"uency of #$H%. &or this

e'periment( we will going to determine the phase se"uence of a

three)phase power line.



INTRODUCTION

*n Electrical Systems( sometimes without identification of phase se"uenc

it is impossible to proceed further.

*n a three phase system( the voltage or current sinusoid attain pea+ value

periodically one after another and are displaced ,-$ degrees from eac

other.



PHASE SE!UENCE DETERMINATIONUSIN" T#O LAMPS AND A CAPACITOR

Phase Se"uence of the

Supply srt

Phase Se"uence of the across the Load bac

0hen two leads of th

connected to the sour

interchange1


Supply srt


across the Load abc



PHASE SE!UENCE DETERMINATIONUSIN" T#O LAMPS AND AN INDUCTOR


Supply srt

Phase Se"uence of the /

across the Load bac

0hen two leads of thconnected to the sour

interchange1


Supplysrt


across the Load abc



THREE$PHASE MOTOR DIRECTION OROTATION #ITH RESPECT TO PHAS

SE!UENC

2otor3s direction of rotation clockwise

2otor3s direction of rotation when two lead of the motor connecte

the power supply were interchanged counterclockwise



CONCLUSION

Phase Se"uence of the voltage applied to the load can bdetermined by how it was connected to the supply. &rom the dat

we gathered( phase se"uence can be reversed by interchangin

any pairs of lines. As for determining the phase se"uence of th

motor( reversal of se"uence results to reversal of the direction o

the motor.

hus( when wor+ing with such systems( it is important that phas

se"uence be clearly specified otherwise unnecessary confusio

will arise.

phase sequence (ee411l)

Documents