etaULTRA

Overview

Lauritz Knudsen etaULTRA APFC Controller – A 3 CT APFC Controller for accurate phase-wise monitoring, individual harmonics measurement up to the 31st order, and advanced optimization algorithms, etaULTRA ensures hunt-free operation, superior power quality, and optimal capacitor bank switching via contactors or thyristors. With built-in MODBUS RS-485 communication, dual power factor settings for mains/DG applications, and cascading support for panels exceeding 16 steps, it delivers unmatched reliability and efficiency in unbalanced or harmonic-rich systems.

Features

3- Phase Current and Voltage measurement
Cascading - Master-slave configuration possible to increase contact output up to 64 steps
Dual PF setting for Mains-DG application
Individual harmonics measurement up to 31st order
PF setting - up to 3rd digit after decimal
Site selectable 2 or 4 quadrant operation for industries with or without Solar plants

Benefits

Superior Handling of Unbalanced Loads — 3 CT inputs enable phase-wise monitoring and individual correction, ensuring accurate power factor control in unbalanced systems.
Harmonics Monitoring and Management — Measures individual harmonics up to the 31st order, helping identify and mitigate distortion for better power quality and equipment protection.
Hunt-Free and Stable Operation — Advanced optimization algorithms provide precise control at the target setpoint, preventing unnecessary capacitor switching and extending component lifespan.
Versatility for Modern Applications — Supports 2-quadrant (conventional) or 4-quadrant operation, ideal for sites with or without solar integration, handling power export scenarios effectively.
Scalability and Integration — Master-slave cascading for panels with more than 16 steps, plus inbuilt MODBUS RS-485 communication for seamless SCADA/BMS integration and remote monitoring.