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UL listed Triol AK06 VSD


Our VSDs are a universal and versatile solution on the oil market. Triol Corporation knows what’s important for our Customers. In 2017 we earned UL certificate which means we comply with UL 61010-1 standard –  Safety Requirements for Electrical Equipment, for Measurement, Control, and Laboratory Use.

Safety comes first, right? Meet our UL certified Triol AK06 VSD and its features!

Main features

Supply voltage, V380/480
Power frequency, Hz50 … 60
Efficiency %97
Overload capacityup to 120% of the rated value within 60 s.
Rectification circuitdiode-thyristor 12 pulse bridge rectification circuit
Analog inputs2
Discrete inputs2
Operation temperature, °С-40 + 60
Altitude curve1000 m above sea level

NEMA 250-2008,

UL 61010-1

VSD provides:

  • deactivation of the ESM / PMM when the supply voltage fails if there’s a deviation that results in an unacceptable current overload;
  • deactivation of the ESM / PMM under underload (protection against disruption of the feed);
  • deactivation of the ESM / PMM during overload in the programmable ampere-second characteristic;
  • disconnection of the ESM / PMM by the overcurrent protection;
  • deactivation of ESM / PMM with an inadmissible decrease of insulation resistance;
  • deactivation of the ESM / PMM at an unacceptably low output frequency of the electric drive;
  • deactivation of the ESM / PMM when the protection of the power switches of the electric drive is triggered;
  • deactivation of the ESM / PMM with overheating of the power modules;
  • deactivation of ESM / PMM when exceeding the set values of the parameters of the telemetry system;
  • deactivation of the ESM / PMM at an unacceptable pressure in the pipeline (according to the signals of the contact manometer);
  • deactivation of the ESM / PMM when opening the door of the power compartment of the cabinet.


Triol Corporation – only safe and reliable solutions!


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