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Variable Speed Drive electronic drive device used control the speed an
electric motor.
”
Word Usually one more bytes used represent instructions or
data digital equipment.
Voltmeter meter designed measure voltage. All Rights Reserved.
Vector Control technique employed some variable frequency drives that
involves calculations motor current vectors and precise
control motor flux provide excellent speed and torque
control.
Watt The basic unit electric power. Siemens trademark Siemens AG.
”
Voltage Also called difference potential, electromotive force, EMF
.This term applies both Drives and DC
Drives.
Primary Secondary
L1
L2
L3
L1
L2
L3
Wye-Wye (Y-Y)Transformer Configuration
N
N
© Siemens Industry, Inc.
Voltage force that, when applied conductor, causes
current flow.
Volts per Hertz (V/Hz) Describes the operation many variable frequency drives that
Operation control the speed motor varying the frequency of
the voltage applied the motor while maintaining constant
voltage frequency ratio. Voltage symbolized “E” “V” and is
measured volts.
.The symbol for volt “V. Other names
mentioned may trademarks registered trademarks their respective companies.The symbol for watt “W.
Volt The basic unit voltage.
Wye connection arrangement used for the primary and/or
secondary three-phase transformer
