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SUB NAVIGATION:
SCR-800 DC Drive
SCR-1600 DC Drive
SCR-2400 DC Drive
VFD-A4 Air Cooled, 480V AC Drive
VFD-A6 Air Cooled, 600V AC Drive
VFD-W4 Water Cooled, 480V AC Drive
VFD-W6 Water Cooled, 600V AC Drive
GC-1 Generator Control
PLC Based Automation Systems
Packaged Electrical Houses
Consoles and Control Panels
Switchgear & Motor Control Centers
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VFD-A4 AC Drive
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The VFD-A4 is an air-cooled AC drive designed to control the speed and torque on a 480V induction motor. The drive is designed with modular, high-current, IGBT modules that can be paralleled to provide a wide range of horsepower. The IGBT modules are supplied with integral centrifugal blowers for removing heat. These drives can be configured as stand-alone units, packaged into a common-DC bus line-up, or supplied with Active Front End rectifiers for regenerating energy. If harmonics need to be attenuated, then the drives can be supplied with phases shifted rectifiers or with filtering equipment. The VFD-A4 is designed for front access and can easily be integrated into line-ups with other switchgear and packaged into electrical buildings. |
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Ratings:
Supply Voltage |
480 Vac |
Motor Voltage |
460 Vac |
Continuous Motor Current |
800HP |
Power |
0 - 50° Celsius (32 - 122° F) |
Frequency |
Forced Air Ventilation |
Ambient Temperature |
87”H x 24”W x 31.5”D |
Cooling |
Forced Air Ventilation |
Dimensions |
87”H x 31.5”D
Width varies with Power |
Standard Features:
- Digital Controller
- Door Mounted Keypad
- Circuit Breaker with Under-voltage Release
- Semiconductor Fuses with Blown Fuse Indication
- Input Line Reactors
- Output Motor Reactors
- Motor Ammeter
- Motor Voltmeter
- Drive Running Lamp
- Power On Lamp
Options:
- Common DC Bus Arrangements
- Active Front End Rectifiers for Regenerating Energy
- 12 and 24 Pulse Configurations for Low Harmonics
- Dynamic Braking Resistor & Chopper
- Assignment Contactors
- Ethernet, Profibus, Modbus, or Devicenet Communications
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