CTV-PRB004-EN 29
Low-Voltage Starter Types
Inverter IGBTs. Use the pulse width modulation (pwM) method to convert the DC voltage from
the capacitor bank into a synthesized output AC voltage that controls both the voltage and
frequency applied to the motor
Features
The standard design features for the AFD include:
• Free standing NEMA 1, ventilated enclosure with a hinged door, tested to a short-circuit current
rating of 65,000 amps. Enclosure locking provisions are standard.
• Lockable, door-mounted circuit breaker/shunt trip with an AIC rating of 65,000.
• Amps, and enclosure short circuit rating of 65,000 amps standard.
• UL/CUL listed as a package.
• Simple, front access only design.
• 460/480/60/3 input power ±10 percent.
• 575/600/60/3 input power ±10 percent.
• Minimum efficiency of 97 percent at rated load and 60 hertz.
• Displacement power factor at 0.96 at all loads.
• Soft-start, linear acceleration, coast-to-stop.
• Adjustable frequency from 38 to 60 hertz.
• 150 percent instantaneous torque available for improved surge control.
• Output line-to-line and line-to-ground short-circuit protection.
• Ground fault protection (UL listed).
Optional Items
• NEMA 12 enclosure.
• 100,000 amp enclosure short-circuit current rating (SCCR) with 100,000-ampAIC circuit breaker
available as a design special.
Figure 21. Front view, remote-mounted AFD
CTV-PRB004.book Page 29 Sunday, December 18, 2011 6:39 PM
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