VFD Cable Solutions What is a VFD A Variable Frequency Drive VFD is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor ID: 637052
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Slide1
Variable Frequency Drive (VFD) Cable
VFD Cable SolutionsSlide2
What is a VFD?
A
Variable Frequency Drive
(VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor.VFD controls an electric motor’sSpeedTorqueDirectionVFDs are used to Run process equipment and machineryPower pumps to move fluidsDrive fans to move airRun conveyors to transport materialVFD compared to a constant speed drive can capture more energy savings.VFDs are also known as…DC drives, AC drives, SCR drives, variable speed drives, adjustable speed drives, electric motor drives, AC motor controllers, AC inverters, pulse width modulation drives…Slide3
VFD Components
3 Main Sections
AC to DC converter with rectifier diodes
DC bus that smooths out the rectifier outputDC to AC inverter to change the power back to ACSlide4
VFD Applications
Steel
mills
Water and wastewater treatment plantsPulp and paper millsCement plantsAuto plantsProcess industriesAnywhere material needs to move!Slide5
Pros and Cons of VFDs
Better
p
rocess controlGreater efficienciesSmooth start and stopReduced motor heatingNoise reductionCost savings
Electromagnetic
i
nterference
(EMI)
Harmonic distortion
In-rush
current
Reflective wave
v
oltages
Standing
waves
Corona dischargeTransientsHigh voltage spikesMotor bearing failuresCable failuresLimited motor lead lengths
DISADVANTAGES
ADVANTAGESSlide6
VFD System
Image Source
:
AmerCable
The benefits of using
proper
components and cables
designed
for VFD systems:
Better Process Control
Greater Efficiencies
Smooth Start and Stop
Reduced Motor Heating
Noise Reduction
Cost Savings
The VFD cable carries power from the AC drive system to the AC motor. It controls line speed for constant or variable speeds under varying loads. Slide7
VFD Cable Construction OptionsSlide8
VFD Cable Feature & BenefitsSlide9
VFD Cable Ratings and Approvals*
600V UL 1277 Type TC-ER
1000V UL Flexible Motor Supply
2000V UL 1277 Type TC-ERFT4 and IEEE1202 Flame RatingsUL 1685 Vertical Tray Flame TestUL Direct Burial90 C Wet/DryMSHA ApprovedROHS CompliantSunlight and Oil ResistantClass I & II, Division 2 and Zone 2 hazardous locationsGas and vapor tight
*
List represents an overview of available ratings and varies between cable brand, size and type.
* For precise technical data, please obtain individual cable specification sheet for the selected cable brand, size and type.Slide10
Why VFD Cable vs Other Cable?
VFD cable is specially engineered to withstand the operating conditions caused by the drive system. It is robust, durable and reliable.
VFD cable provides enhanced reflected wave and corona effect protection:
Preventing motor failure Avoiding cable insulation break downVFD cable contains the current noise (common mode current) within the cable and away from sensitive equipment and motor bearings: Reducing system downtimeMaintaining signal integrityExtending motor bearing lifeCircumventing false triggeringVFD cable prevents lost of current (capacitive coupling/cable charging):Preventing false trips of drive overcurrentInhibiting loss of motor torque or stallingImproving system efficiencyProtecting adjacent circuits Providing safe environmentSlide11
The Right Cable Prevents Problems
Cable Failure = System FailureSlide12
Call HWC to Learn More
1-800-HOU-WIRE
www.houwire.com/VFD
Greg Green, National Account Managerggreen@houwire.com770-330-7268Dan Neal, Product Marketing Managerdneal@houwire.com713-609-2243Brandilyn Johnson, Product Marketing Managerbjohnson@houwire.com713-609-2252Stacey Pruitt, Senior Buyerspruitt@houwire.com713-609-2249