triol logoTriol at27

Variable Frequency Drive Versatile and reliable solution for general industrial applications

Triol 27

High-quality solution for efficient work in various industries

Medium-voltage Variable Frequency Drives Triol AT27 is designed for automatic control of a wide range of industrial systems with induction, synchronous (with an external exciting system) and Permanent Magnet Motors.

Variable Frequency Drives Triol AT27 has an extensive motor control functionality and covers a large power range to operate with pumps, fans, compressors, mills, crushers, conveyors, extruders, mixers, etc.

Variable Frequency Drive Triol AT27 offers wide sets of functions and unique algorithms for high-quality control of motors. Implementation of Variable Frequency Drive Triol AT27 provides increased reliability of equipment operation, reduced productivity and energy savings. Innovative technical solutions in the field of transformer design, cooling systems and intelligent algorithms development guarantee a non-stop operation of equipment minimizing the costs.

Robust VFD that is persistent to ice, rain, and snow Variable Frequency Drive Triol AT27 Lineup

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AT27 Energy Drive

General industrial application (pumps, fans, exhausters, compressors, mills, conveyors, extruders)

  • Cabinet type
  • Enclosure - NEMA2 (IP31)
  • Operating temperature - 33.8 -104°F
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AT27 Robust Xform

General industrial application (pumps, fans, exhausters, compressors, mills, conveyors, extruders)

  • Block-box type
  • Enclosure - NEMA3 (IP43)
  • Operating temperature - 76 – 104°F
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AT27 Might of Voltage

General industrial application (pumps, fans, exhausters, compressors, mills, conveyors, extruders)

  • Cabinet type
  • Enclosure - NEMA4 (IP65) with dual-circuit air cooling system
  • Operating temperature - 14…140°F or –76…104°F

Advanced drive with wide range of options

Variable Frequency Drive AT27 options

Option Description
Reactors for transfer of the motor to mainpopps Copper bus is the material used for transformer windings. Transformer parameters and efficiency are commensurable with the basic type of transformer with windings of aluminum busbars
Mechanical bypass of power cells Bypass of each power cell of the drive is made on the basis of a vacuum chamber, with a response time of not more than 4 msec
IGBT bypass of power cells Bypass of each power cell of the drive made on the basis of IGBT transistors
Additional power cell in each phase For compensating voltage drop on the output sine-filter or reactors (if available) and the long cable line, as well as to ensure operation in the nominal mode in the case of bypassing the cells (with this option)
Advanced enclosure Enclosure IP42
Increased operating temperature Maximum operating temperature up to +50 °С
Top cable entry Organization of terminals for entry power and signal cables on top of AT27 VFD
Heating system Build-in option. Minimum operating temperature from minus 10 °С
Redundant cooling fans Additional cooling fans with a check valve system to ensure AT27 operation with rated power if one of them fails
Additional PCB coverage Coating of printed circuit boards with a special varnish to protect against aggressive impurities in the air
Electromagnetic door lock Electromagnetic locks on the doors of the AT27 power compartments provide protection against opening doors when medium voltage is applied
Profibus communication protocol Convertor Modbus-Profibus
CB27 Switch Cabinets External cabinets. Allow you to implement the required one-line diagram
Reactors for transfer of the motor to mains External cabinet. Designed to provide synchronous and shockless transfer of the motor to mains
Output filter External cabinet. Designed to improve the output current and voltage THD, as well as reduce the value of the parameter dV/dt

Ergonomic design, high reliability, and minimal maintenance requirements

Distinctive benefits

Reduced installation and operating costs

  • Low cost with an extended lifetime
  • Easy setup and monitoring
  • Increased motor overhaul cycles and processing equipmen
  • Minimum installation work
  • Standard shipping
  • No need for a large storage roo

Investment Savings

  • No construction and ventilation system required
  • No additional power transformers needed
  • Operation with any motor
  • IEEE 519 compliance
  • One VFD covers control process for several motor and programmable logic controller (PLC)
  • Small footprint

Maximization of production

  • Voltage sags protection
  • No shutdowns due to Triol AT27 VFD failure
  • Automatic restart
  • Quick replacemen
  • Unlimited motor start
  • Unloading time savings (mills, mixers, extruders)
  • Completing the plan
  • System redundancy

Energy and resource savings

  • Reduced energy consumption
  • Process optimization
+1 832 260 0057

10370 Richmond Ave., Suite 1175, Houston, TX 77042