Variable frequency drive Triol AT27 Series

AT27 medium-voltage multilevel frequency converter is constructed to accomplish frequency control of the speed in cage both asynchronous and synchronous motors. The drive is connected directly to a 6 kV supply and can spread up to 6 kV supply to the load. Variable frequency drive (VFD) may be used at plants with thermal power, mills, water supply facilities, for oil and chemical industries, and at mining and iron-and-steel plants.


Advantages of the applying of the AT27 VFD:

  • lower power consumption;
  • launch high-starting-torque motors;
  • enhance the reliability and extend the service life of motors;
  • enhance the reliability and extend the service life of machinery driven by motors;
  • eliminate water hammers in a piping system;
  • decrease the rate of equipment failure;
  • reduce costs for repairs and maintenance;

Operating modes

There are two modes of operation provided by AT27 VFD while controlling electric motors:

  • Manual
  • Automatic

AT27 VFD, 6 kV, cabinet-type

Maximum output voltage 3-6 kV,

АТ27-6kV cabinet-type variable-frequency drive is designed to control cage asynchronous and synchronous motors as well as synchronous motors with external exciter. Compact and ergonomic design provides an opportunity to comfortably adapt the product to the service conditions prevailing at a particular Customer’s facility. Triol AT27 control system makes it possible to readily integrate a variable-frequency drive into the manufacturing process. Triol IDrive technology used therein opens up new opportunities associated with remote control and adjustment.

Features:

  • Single side maintenance reduces installation size.
  • Enhanced personnel safety due to mechanical and electrical blocking systems that exclude the possibility of electrical shock during operation or service of the drive.
  • High overload capability – 120 % in 120 s.
  • Has a variety of protection functions of the drive, the motor and the mechanical load.
  • Increased reliability due to the use of 6 power cells for each phase and cell bypass function.
  • Low harmonic distortion of the supply (THDi)
  • Inverter efficiency higher than 98 %, transformer efficiency higher than 98 % (for power higher than 1600 kW).
  • Optional operation only from medium voltage supply voltage, without the need for external low voltage supply.
  • V/F, speed or torque control options.
  • Cascade control of several motors.

AT27 VFD, 10 kV, cabinet-type

Maximum output voltage 3-10 kV

AT27 VFD, 10 kV, maximum output voltage 3-10 kV, cabinet-type

Features:

  • Single side maintenance reduces installation size.
  • Enhanced personnel safety due to mechanical and electrical blocking systems that exclude the possibility of electrical shock during operation or service of the drive.
  • High overload capability – 120 % in 120 s.
  • Has a variety of protection functions of the drive, the motor and the mechanical load.
  • Increased reliability due to the use of 6 power cells for each phase and cell bypass function.
  • Low harmonic distortion of the supply (THDi)
  • Inverter efficiency higher than 98 %, transformer efficiency higher than 98 % (for power higher than 1600 kW).
  • Optional operation only from medium voltage supply voltage, without the need for external low voltage supply.
  • V/F, speed or torque control options.
  • Cascade control of several motors.

AT27 VFD, 11 kV, cabinet-type

Maximum output voltage 3-11 kV,

AT27 VFD, 11 kV, maximum output voltage 3-11 kV, cabinet-type

Features:

  • Single side maintenance reduces installation size.
  • Enhanced personnel safety due to mechanical and electrical blocking systems that exclude the possibility of electrical shock during operation or service of the drive.
  • High overload capability – 120 % in 120 s.
  • Has a variety of protection functions of the drive, the motor and the mechanical load.
  • Increased reliability due to the use of 6 power cells for each phase and cell bypass function.
  • Low harmonic distortion of the supply (THDi)
  • Inverter efficiency higher than 98 %, transformer efficiency higher than 98 % (for power higher than 1600 kW).
  • Optional operation only from medium voltage supply voltage, without the need for external low voltage supply.
  • V/F, speed or torque control options.
    Cascade control of several motors.

AT27 VFD, 3.3 kV, cabinet-type

Maximum output voltage 3-3.3 kV,

AT27 VFD, 3.3 kV, maximum output voltage 3-3.3 kV, cabinet-type

Features:

  • Single side maintenance reduces installation size.
  • Enhanced personnel safety due to mechanical and electrical blocking systems that exclude the possibility of electrical shock during operation or service of the drive.
  • High overload capability – 120 % in 120 s.
  • Has a variety of protection functions of the drive, the motor and the mechanical load.
  • Increased reliability due to the use of 6 power cells for each phase and cell bypass function.
  • Low harmonic distortion of the supply (THDi)
  • Inverter efficiency higher than 98 %, transformer efficiency higher than 98 % (for power higher than 1600 kW).
  • Optional operation only from medium voltage supply voltage, without the need for external low voltage supply.
  • V/F, speed or torque control options.
  • Cascade control of several motors.

AT27 VFD, 4.2 kV, cabinet-type

Maximum output voltage 3-4.2 kV,

AT27 VFD, 4.2 kV, maximum output voltage 3-4.2 kV, cabinet-type

Features:

  • Single side maintenance reduces installation size.
  • Enhanced personnel safety due to mechanical and electrical blocking systems that exclude the possibility of electrical shock during operation or service of the drive.
  • High overload capability – 120 % in 120 s.
  • Has a variety of protection functions of the drive, the motor and the mechanical load.
  • Increased reliability due to the use of 6 power cells for each phase and cell bypass function.
  • Low harmonic distortion of the supply (THDi)
  • Inverter efficiency higher than 98 %, transformer efficiency higher than 98 % (for power higher than 1600 kW).
  • Optional operation only from medium voltage supply voltage, without the need for external low voltage supply.
  • V/F, speed or torque control options.
  • Cascade control of several motors.

AT27 VFD, 6 kV, block-box type

Maximum output voltage 3-6 kV

Block-box version of АТ27-6kV variable-frequency drive includes the most up-to-date technical solutions and optimized operating algorithms. Such a design significantly simplifies installation, commissioning and maintenance of medium-voltage drives, wherein no additional construction documents or expert examination is required for onsite installation.

Features:

  • Low cost installation container enclosure.
  • Outdoor in any climate.
  • Easy maintenance in any weather.
  • Operating temperature range from –60 °C to +50 °C.
  • Easy to integrate into the technological process due to wide range of algorithms and functions:Triol «Cascade» system;Flying start of the motor;
    PID – regulator;
    Operation by calendar settings;
    Automatic restart.
  • High overload capability – 120 % in 120 s.
  • Withstands up to –35 % voltage dips.
  • V/F, speed or torque control options.
  • Automatic maintenance of a certain technological parameter.
  • Low harmonic distortion of the supply (THDi).

AT27 VFD, 10 kV, block-box type

Maximum output voltage 3-10 kV

Block-box version of АТ27-6kV variable-frequency drive includes the most up-to-date technical solutions and optimized operating algorithms. Such a design significantly simplifies installation, commissioning and maintenance of medium-voltage drives, wherein no additional construction documents or expert examination is required for onsite installation

Features:

  • Low cost installation container enclosure.
  • Outdoor in any climate.
  • Easy maintenance in any weather.
  • Operating temperature range from –60 °C to +50 °C.
  • Easy to integrate into the technological process due to wide range of algorithms and functions:

  1. Triol «Cascade» system;
  2. Flying start of the motor;
  3. PID – regulator;
  4. Operation by calendar settings;
  5. Automatic restart.

  • High overload capability – 120 % in 120 s.
  • Withstands up to –35 % voltage dips.
  • V/F, speed or torque control options.
  • Automatic maintenance of a certain technological parameter.
  • Low harmonic distortion of the supply (THDi).

AT27 VFD, 11 kV, block-box type

Maximum output voltage 3-11 kV,

Block-box version of Triol АТ27-6kV variable-frequency drive includes the most up-to-date technical solutions and optimized operating algorithms. Such a design significantly simplifies installation, commissioning and maintenance of medium-voltage drives, wherein no additional construction documents or expert examination is required for onsite installation.

Features:

  • Low cost installation container enclosure.
  • Outdoor in any climate.
  • Easy maintenance in any weather.
  • Operating temperature range from –60 °C to +50 °C.
  • Easy to integrate into the technological process due to wide range of algorithms and functions:

  1. Triol «Cascade» system;
  2. Flying start of the motor;
  3. PID – regulator;
  4. Operation by calendar settings;
  5. Automatic restart.

  • High overload capability – 120 % in 120 s.
  • Withstands up to –35 % voltage dips.
  • V/F, speed or torque control options.
  • Automatic maintenance of a certain technological parameter.
  • Low harmonic distortion of the supply (THDi).

AT27 VFD, 3.3 kV, block-box type

Maximum output voltage 3-3.3 kV,

Block-box version of Triol АТ27-6kV variable-frequency drive includes the most up-to-date technical solutions and optimized operating algorithms. Such a design significantly simplifies installation, commissioning and maintenance of medium-voltage drives, wherein no additional construction documents or expert examination is required for onsite installation.

Features:

  • Low cost installation container enclosure.
  • Outdoor in any climate.
  • Easy maintenance in any weather.
  • Operating temperature range from –60 °C to +50 °C.
  • Easy to integrate into the technological process due to wide range of algorithms and functions:

  1. Triol «Cascade» system;
  2. Flying start of the motor;
  3. PID – regulator;
  4. Operation by calendar settings;
  5. Automatic restart.

  • High overload capability – 120 % in 120 s.
  • Withstands up to –35 % voltage dips.
  • V/F, speed or torque control options.
  • Automatic maintenance of a certain technological parameter.
  • Low harmonic distortion of the supply (THDi).

AT27 VFD, 4.2 kV, block-box type

Maximum output voltage 3-4.2 kV,

Block-box version of Triol АТ27-6kV variable-frequency drive includes the most up-to-date technical solutions and optimized operating algorithms. Such a design significantly simplifies installation, commissioning and maintenance of medium-voltage drives, wherein no additional construction documents or expert examination is required for onsite installation.

Features:

  • Low cost installation container enclosure.
  • Outdoor in any climate.
  • Easy maintenance in any weather.
  • Operating temperature range from –60 °C to +50 °C.
  • Easy to integrate into the technological process due to wide range of algorithms and functions:

  1. Triol «Cascade» system;
  2. Flying start of the motor;
  3. PID – regulator;
  4. Operation by calendar settings;
  5. Automatic restart.

  • High overload capability – 120 % in 120 s.
  • Withstands up to –35 % voltage dips.
  • V/F, speed or torque control options.
  • Automatic maintenance of a certain technological parameter.
  • Low harmonic distortion of the supply (THDi).

Downloads

catalog_AT27_2015_04 (pdf)

Download

Operating-manual-AT27-6-kV-block-box (pdf)

Download

Brochure (pdf)

Download