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KB Electronics Inc.
"KBVF" Frequency Drive
A Low Cost, full featured, Motor Control / Frequency Drive
with 100% power output
Single phase input - Three phase output
| If you have been to
a used equipment auction and purchased a mill, lathe, drill press or other
piece machinery with a three phase motor and are looking for a low cost solution to power it with single phase power. This may be your low cost solution. Unlike some of the electronic phase inverters that only output 2/3 of the power, this unit puts out 100% 3 phase power with 200% starting torque. You will need to eliminate any other motor switches. You will connect the motor directly to the 3 terminals on the converter. Otherwise the contacts from the old motor starter will allow feedback to the control that will damage the unit. The KB control becomes the motor starter. The unit should be powered through an electric power disconnect. When selecting drive size the motor amps cannot exceed the rated output amps of the control.
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| Standard Features: Operates standard 208/230 VAC 3-phase AC motors, with 230 VAC input single phase Power Start provides more than 200% starting torque 30:1 speed range with full motor torque (Speed potentionmeter (pot) provided) (Motor should be inverter rated if using speed control feature) Controls 50hz and 60hz motors with a convenient jumper selection Sinewave coded PWM-provides high motor torque and efficient operation 16 khz switching frequency-provides quite motor operations Motor overload protection Jumper selections: Forward-stop-reverse/Enable-automatic-manual You can use a 3-position toggle switch Start 0-60,0-120, 0-50hz. Trimpot adjustments: Minimum Speed-min, Maximum Speed-Max Important Application Information: Most fan-cooled (TEFC) 3-phase motors will overheat if used with an inverter beyond a limited speed range at full rated torque. Therefore, it is necessary to reduce motor load as speed is decreased. Attention: Your motor amps cannot exceed the rated output amps of the converter. Note: Motor can not be run through contacts. Motor to be wired directly to controller. Speed potentionmeter must be connected or the motor will not spin, without the pot the speed is set at zero and you will burn the motor up. Not Recommended for use on air compressors Click to show Complete Drive Manual |
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Catalog # |
Description |
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| KBVF-23D | 1/2 Horsepower 2.4 Output amps @ 230 Volt ship weight 2 lbs. |
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| KBVF-24D | 1 Horsepower 4.0 Output amps @ 230 Volt ship weight 3 lbs. |
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| KBVF-26D | 2 Horsepower 5.5 Output amps @ 230 Volt ship weight 4 lbs. |
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Leeson Electric Motors Phase Inverters |
Phase Inverter for 1/4hp to 3hp, 3-phase electric motors
Micro Series Inverters
NEMA 1 (IP31) Single
Phase 230 volt Input/Three Phase 230 volt Output
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Speedmaster Micro Series compact inverters, utilizing the latest microprocessor and advanced IGBT power conversion devices, these high performance controls program and read-out in plain English terms, eliminating the frustration and time involved in looking up confusing coded symbols. Complete, rugged steel enclosures for NEMA 1 (IP31) service do not require additional enclosure protection as with many plastic-housed compact drives. Built-in thermal overload protection reduces additional costs. Heavy-duty wiring terminals, accessible via three conduit openings on the bottom of the housing, speeding installation and cut costs. Unit has on/off buttons and up/down speed control*. If you are searching for a speed control motor package (smart motor) click here
Looking for a phase converter for your 3
phase electric motor? These units will power up to a 3hp motor, with
true 3 phase output, unlike most electronic phase converters that only
output 2/3 the power, these units output 100% of the 3 phase power
needed to run your motor. 230 volts single phase input, 230 volts three phase output. |
Catalog # |
Description |
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| 174930 |
1/4 Horsepower |
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| 174931 | 1 Horsepower 4.0 Output amps @ 230 Volt ship weight 7 lbs. |
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| 174932 | 1.5 Horsepower 5.2 Output amps @ 230 Volt ship weight 7 lbs. |
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| 174933 | 2 Horsepower 6.8 Output amps @ 230 Volt ship weight 9 lbs. |
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| 174934 | 3 Horsepower 9.6 Output amps @ 230 Volt ship weight 9 lbs. |
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* Above Not recommended for speed control-you will burn the motor up, unless you have an inverter duty 3 phase motor |