Liquid Cooled VFDs
Low-Voltage Variable Frequency Drive Solution for Demanding Applications Liquid cooled AC drives are designed to control the speed and torque on low voltage induction motors. The drives features inverter modules with high-current IGBTs that can be paralleled for a wide range of motor horsepowers.
These drives can be configured as stand-alone units, packaged into a common-DC bus arrangement, or supplied with active front end (AFE) rectifiers for regenerating energy.
Each drive module comes equipped with an integral liquid cooled heat sink for removing heat. Current Power can provide VFDs as part of a packaged solution with any or all of the following products:
- Electrical building (power house)
- Generator control and distribution switchgear
- PLC based automation system
- Control consoles
Standard drive options are available, but Current Power can provide detailed engineering necessary to meet your specific application within the ratings listed below. For further information, contact sales@currentpsi.com.
Standard Features
- Line disconnect for isolation and lockout of the drive
- Stainless steel water cooling systems
- Input line reactance for transient protection
- High speed fuses for protection of sensitive electronics
- Digital controller with parameter based operation and analog and digital I/O
- Door mounted HMI digital display and keypad
- Emergency stop pushbutton
- Tin-plated copper buswork
- Front access design for simple access to modular drive components
- Free standing, welded frame cubicles with a light grey powder coat finish
- Tin-plated copper ground bar
- Dedicated engineering support during design and fabrication
- Full load tests done prior to shipment
- Documentation package including engineered drawings and product data sheets
STANDARD AVAILABLE RATING:
AC Supply Voltage 380 – 690Vac
Motor Horsepower Up to 6000HP
Ambient Temperature 0 – 50°C (32 – 122°F)
Continuous Motor Current Up to 6500Aac
Frequency 0 – 200Hz
Cooling Water or Coolant (non-deionized)
Enclosure Dimensions 91” H x *” W x 32” D
* Width of enclosure varies with motor current/horsepower
OPTIONAL FEATURES
• Common DC bus arrangement for more efficient use of rectifiers
• Active Front End (AFE) rectifier arrangement for regenerating energy
• 12 and 24 pulse configurations for harmonic mitigation
• Dynamic braking chopper and resistor
• Profibus, Profinet, or Modbus communications
• Motor encoder interface
• Anti-condensation space heaters
• Saltwater heat exchanger
• 3rd party design approval and/or certification
• Remote control panels
• Installation and commissioning services
• Training classes on operation and maintenance
Current Power Liquid-Cooling Systems
- Welded stainless steel
- Redundant cooling pumps
- Stainless steel make-up water tank
- Standard ethylene glycol/water mixture – same coolant used in cars and trucks (Saltwater
- Engineering studies done for all systems, including heat rejection, pressure vs flow modeling, and pump sizing
- Heat exchanger bypass valve (prevents cond
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