Phase Sequence (EE411L)
-
Upload
krysmyr-acot -
Category
Documents
-
view
8 -
download
0
description
Transcript of 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
7/17/2019 Phase Sequence (EE411L)
http://slidepdf.com/reader/full/phase-sequence-ee411l 2/7
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 #$H%. &or this
e'periment( we will going to determine the phase se"uence of a
three)phase power line.
7/17/2019 Phase Sequence (EE411L)
http://slidepdf.com/reader/full/phase-sequence-ee411l 3/7
INTRODUCTION
*n Electrical Systems( sometimes without identification of phase se"uenc
it is impossible to proceed further.
*n a three phase system( the voltage or current sinusoid attain pea+ value
periodically one after another and are displaced ,-$ degrees from eac
other.
7/17/2019 Phase Sequence (EE411L)
http://slidepdf.com/reader/full/phase-sequence-ee411l 4/7
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
Phase Se"uence of the
Supply srt
Phase Se"uence of the
across the Load abc
7/17/2019 Phase Sequence (EE411L)
http://slidepdf.com/reader/full/phase-sequence-ee411l 5/7
PHASE SE!UENCE DETERMINATIONUSIN" T#O LAMPS AND AN INDUCTOR
Phase Se"uence of the
Supply srt
Phase Se"uence of the /
across the Load bac
0hen two leads of thconnected to the sour
interchange1
Phase Se"uence of the
Supplysrt
Phase Se"uence of the
across the Load abc
7/17/2019 Phase Sequence (EE411L)
http://slidepdf.com/reader/full/phase-sequence-ee411l 6/7
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
7/17/2019 Phase Sequence (EE411L)
http://slidepdf.com/reader/full/phase-sequence-ee411l 7/7
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.