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Built around you. Nothing excess.
Input voltage
3.3, 4.16, 6, 6.6, 10, 11, 13.8 kV (-10% ... +10%)
Efficiency
≥96.5%
Input current total harmonic distortion (THD)
< 5% (The drive delivers clean input performance and is compliant with IEEE 519)
Output frequency range
From 0.5 to 180 Hz (Resolution is 0.01 Hz)
Discover the engineering advantages that set the AT27 RD apart - and keep your operations running at peak performance.
The drive is a multi-level Variable Frequency Drive (VFD) equipped with a phase-shifting input transformer that ensures low harmonic distortion and full IEEE 519 compliance. This design delivers clean input performance, eliminating the need for external filters or extra add-ons.
IEEE 519 compliance
The AT27 RD is versatile, supporting induction, synchronous, and Permanent Magnet synchronous motors (PMM).
The drive connects directly to motors without extra components because it does not require output filters.
The VFD is equipped with the UMKA37, Triol’s advanced digital control controller, which includes a 10-inch high-resolution touchscreen and a clean, guided interface with prompts and visualizations.
It supports several advanced control methods, including Sensorless vector control (open loop), Closed loop vector control (with speed feedback), and Scalar mode V/f (including 8 reference points).
The drive is available in single or dual cabinet options depending on the power range required. Its core units feature a modular power cell design and a multi-winding phase-shifting transformer.
Maintenance is designed to be safe and simple, even during operation. The drive features single-side service access, which allows for wall-adjacent installation.
Look inside the AT27 RD to see how smart design becomes real-world performance, efficiency, and uptime.
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Built through partnership. Proven by engineering. Trusted in the toughest conditions. Full-cycle production. Total reliability. Systems that perform where others fall short.
Meet our team
Meet the team behind innovations that drive industries forward. Engineers, designers, and experts turning challenges into solutions.
Triol’s partners
We collaborate with leading Oil & Gas and industrial companies worldwide to deliver efficient, proven solutions tailored to their unique challenges.
Sustainability
Because real sustainability starts at the design table - not at the marketing one - we engineer systems that conserve, protect, and outperform over time.
Technology
Where others deliver equipment, Triol delivers systems. Modular, intelligent, and field-ready. Built for the complexity of modern industry.
Implementations
Global reach, industrial depth: Triol systems implemented across continents and critical sector
Input power factor (cosϕ)
0.96
Motor compatibility
Induction motor, Synchronous, and Permanent magnet motor (PMM)
Enclosure
IP 31 (Basic design)
Control methods
Sensorless vector control (Open loop vector control without speed feedback), Closed loop vector control (with speed feedback), and Scalar mode V/f (including 8 reference points)
Noise level (1m distance)
< 79 dB(A)
Mean time between failures (MTBF)
220,000 hours (with timely service)
We are fast where others are slow, flexible where others are rigid, and committed where others are distant.
