Vfd Drive
Todays deals on Vfd Drive?
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600 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4800-C $45,180.00 |
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500 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4700-C $41,445.00 |
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700HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-08660-NA $41,220.99 |
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450 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4600-C $36,330.00 |
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400 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4500-C $33,300.00 |
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400HP & 500HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-04810-NA $29,291.99 |
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650HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-07700-NA $26,516.99 |
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550HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-06830-NA $23,637.99 |
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500HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-06100-NA $20,759.99 |
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300HP & 400HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-03610-NA $19,874.99 |
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350 HP Omron Variable Frequency Drive FREE SHIPPING $19,720.00 |
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350 HP Omron Variable Frequency Drive FREE SHIPPING $19,720.00 |
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350 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4450-C $19,120.00 |
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250HP & 350HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-03250-NA $17,962.99 |
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500HP 460V VARIABLE FREQUENCY DRIVE IRRIGATION/FAN DUTY $17,813.00 |
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450HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-05470-NA $16,463.99 |
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350 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4400-C $16,410.00 |
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300 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4350-C $15,835.00 |
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200HP & 300HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-02600-NA $14,444.99 |
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350HP 460V VARIABLE FREQUENCY DRIVE IRRIGATION/FAN DUTY $13,425.00 |
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150HP & 250HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-02160-NA $13,044.99 |
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350HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-04320-NA $12,995.99 |
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250 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4300-C $12,699.00 |
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100HP & 150HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-01440-NA $11,807.99 |
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150HP & 200HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-01800-NA $11,783.99 |
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300HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-03610-NA $11,630.99 |
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200 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4250-C $11,400.00 |
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125 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2150-C $11,285.00 |
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250HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-03250-NA $9,964.99 |
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VFD VARIABLE FREQUENCY DRIVE YASKAWA F7 F7U 200HP&300HP $9,900.00 |
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75HP 460V 3-Phase Saftronics VG7 VFD, Inverter, Drive FRN55VG7-4 $9,758.99 |
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200HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-02600-NA $9,242.99 |
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75HP & 100HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-01100-NA $8,949.99 |
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100 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2125-C $8,700.00 |
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30HP 230V 3-Phase Teco MA7200 VFD, Inverter, Drive MA7200-2030-N1 $8,637.99 |
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150 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4200-C $8,599.00 |
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150HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-02160-NA $8,222.99 |
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125 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4150-C $7,660.00 |
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60HP & 75HP 230V 3-Phase Saftronics GP10 VFD, Inverter, Drive GP102075-9 $7,106.99 |
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50HP & 60HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-00710-NA $7,068.99 |
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60HP & 75HP 500V 3-Phase EATON SVX9000 VFD, Inverter, Drive SVX060A1-4A1N1 $6,829.99 |
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100 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4125-C $6,585.00 |
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75HP & 100HP 460V 3-Phase Saftronics C10 VFD, Inverter, Drive C104075-1 $6,480.99 |
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75 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2100-C $6,165.00 |
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100/150HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-01800-NA $6,136.99 |
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Lenze drive EVS 9329-EP – VFD Variable Frequency Drive $6,000.00 |
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75HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-01160-NA $5,847.99 |
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60HP 460V 3-Phase Yaskawa E7 VFD, Inverter, Drive CIMR-E7U40451A $5,692.99 |
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75HP 230V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F720-02330-NA $5,519.99 |
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ALLEN BRADLEY 1336 PLUS II VFD SENSORLESS VECTOR 250HP AC DRIVE 1336F-B250-AE-EN $4,999.96 |
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40HP & 50HP 230V 3-Phase Saftronics GP10 VFD, Inverter, Drive GP102050-9 $5,240.99 |
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60 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2075-C $5,165.00 |
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60HP & 75HP 460V 3-Phase Saftronics C10 VFD, Inverter, Drive C104060-1 $4,974.99 |
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50HP 460V 3-Phase Telemecanique Altivar 58 VFD, Inverter, Drive ATV58HD46N4Z $4,970.99 |
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75 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4100-C $4,960.00 |
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Delta VFD750B43A AC Drive VFD B Inverter 100HP 460V $4,855.20 |
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New Delta VFD750B43A AC Drive VFD B Inverter 100HP 460V $4,890.00 |
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60HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-00930-NA $4,835.99 |
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30HP & 40HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-00440-NA $4,588.99 |
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Delta VFD550B43A AC Drive VFD B Inverter 75HP 460V $4,352.60 |
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30HP & 40HP 230V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A720-00900-NA $4,353.99 |
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50 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2060-C $4,350.00 |
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40HP & 50HP 230V 3-Phase Saftronics C10 VFD, Inverter, Drive C102040-1 $4,335.99 |
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50HP 460V 3-Phase Yaskawa E7 VFD, Inverter, Drive CIMR-E7U40301A $4,324.99 |
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50/60HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-00770-NA $4,318.99 |
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60 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4075-C $4,245.00 |
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50HP & 60HP 460V 3-Phase Saftronics C10 VFD, Inverter, Drive C104050-1 $4,209.99 |
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25HP & 30HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-00380-NA $4,202.99 |
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30HP 460V 3-Phase Mitsubishi Pow-R-Gate VFD, Inverter, Drive F1C460V30HM30 $4,186.99 |
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40HP & 50HP 460V 3-Phase Saftronics GP10 VFD, Inverter, Drive GP104050-9 $4,121.99 |
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25HP & 30HP 230V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A720-00760-NA $3,997.99 |
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MAGNETEK GPD515C B034 VARIABLE FREQUENCY DRIVE NOS WITH MANUEL FREE SHIPPING $3,995.00 |
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Delta VFD450B43A AC Drive VFD B Inverter 60HP 460V $3,870.30 |
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New VFD450B43A AC Drive VFD B Inverter 60HP 460V $3,860.00 |
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50/60HP 230V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F720-01540-NA $3,808.99 |
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40 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2050-C $3,685.00 |
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50 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4060-C $3,630.00 |
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40HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-00620-NA $3,599.99 |
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40HP & 50HP 460V 3-Phase Saftronics C10 VFD, Inverter, Drive C104040-1 $3,458.99 |
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40HP 230V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F720-01250-NA $3,391.99 |
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20HP & 25HP 230V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A720-00610-NA $3,348.99 |
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Delta VFD370B43A AC Drive VFD B Inverter 50HP 460V $3,189.20 |
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30HP & 40HP 230V 3-Phase Saftronics C10 VFD, Inverter, Drive C102030-1 $3,181.99 |
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25HP & 30HP 500V 3-Phase EATON SVX9000 VFD, Inverter, Drive SVX025A1-4A1B1 $3,116.99 |
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30HP 230V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F720-00930-NA $3,109.99 |
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25HP & 30HP 460V 3-Phase Mitsubishi A500 VFD, Inverter, Drive FR-A540-18.5K-NA $3,080.99 |
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ALLEN BRADLEY PowerFlex 70 20AD034A3AYNANC0 A VFD AC DRIVE 25HP 480 VAC $2,998.79 |
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ALLEN BRADLEY 1336S-B025-AA-EN-L6 B 1336 PLUS VFD AC DRIVE 25HP 480 VAC $2,998.79 |
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15HP 230V 3-Phase Teco MA7200 VFD, Inverter, Drive MA7200-2015-N1 $3,041.99 |
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Delta AC Motor Drive VFD550B43C NIB! $3,024.00 |
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40 HP 460V TECO VARIABLE FREQUENCY DRIVE EQ5-4050-C $2,965.00 |
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30 HP 230V TECO VARIABLE FREQUENCY DRIVE EQ5-2032-N1 $2,965.00 |
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20HP & 25HP 460V 3-Phase Mitsubishi A700 VFD, Inverter, Drive FR-A740-00310-NA $2,912.99 |
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DELTA VFD AC MOTOR VARIABLE FREQUENCY SPEED SENSORLESS DRIVE 50HP 600VAC NEMA 1 $2,899.99 |
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60HP 230V 3-Phase Hitachi L300P VFD, Inverter, Drive L300P-450LBRM $2,899.99 |
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30HP 460V 3-Phase Mitsubishi F700 VFD, Inverter, Drive FR-F740-00470-NA $2,838.99 |
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25HP & 30HP 230V 3-Phase Saftronics GP10 VFD, Inverter, Drive GP102030-1M $2,808.99 |
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20HP & 25HP 500V 3-Phase EATON SVX9000 VFD, Inverter, Drive SVX020A1-4A1B1 $2,800.99 |
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VARIABLE FREQUENCY DRIVE MOTOR CONTROL 30HP $2,800.00 |
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25HP & 30HP 230V 3-Phase Saftronics GP10 VFD, Inverter, Drive GP102030-1 $2,771.99 |
Vfd Drive Questions
Applications Considerations While Appling Frequency Inverter (VFD) (1)
Today Frequency Inverters are widely used in a variety of applications for various reasons. And in pump and fan application, variable frequency drives (VFDs, variable speed drives, VSDs) are the most effective energy savers.
A thorough understanding is essential while appling frequency inverters.
The output voltage of a Pulse Width Modulation (PWM) variable frequency drive (VFD) consists of a train of pulses switched at the carrier frequency. Because of the rapid rise time of these pulses, transmission line effects of the cable between frequency inverter (vfd) and the motor must be considered. Since the transmission-line impedance of the cable and motor are different, pulses tend to reflect back from the motor terminals into the cable. The resulting voltages can produce up to twice the rated line voltage for lone cable runs, putting high stress on the cable and motor winding and eventual insulation failure.
Increasing the cable or motor size/type for long runs and 480v or 600v motors will help offset the stresses imposed upon the equipment due to the VFD (modern 230v single phase motors not effected). At 460 V, the maximum recommended cable distances between VFDs and motors can vary by a factor of 2.5:1. The longer cables distances are allowed at the lower Carrier Switching FrequencY (CSF) of 2.5 kHz. The lower Carrier Switching FrequencY (CSF) can produce audible noise at the motors.
For applications requiring long motor cables, variable frequency drive (VFD, variable speed drive, VSD) manufacturers usually offer du/dt filters that decrease the steepness of the pulses. For very long cables or old motors with insufficient winding insulation more efficient sinus filter is recommended. Expect the older motor’s life to shorten. Purchase VFD rated motors for the application.
About the Author
Richard, working in GreenDriv Tech Limited, which manufactures and exports frequency inverters, adjustable speed drives with good quality to clients in the world.
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