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INTRODUCTION
The GRTD-TH3 digital voltage regulator is a compact device with features similar to analog voltage
regulators, increasing the reliability and protections of the synchronous machine. It is applied to
brushless generators (without brushes) with auxiliary coil or without auxiliary coil (shunt).
The project is intended for operation inside the generator's junction box. The aluminum base is made
of material with excellent creep resistance and has excellent dimensional stability under low load.
The variations of the properties of the aluminum under the variation of temperature are low as well
as the coefficient of thermal expansion. Most importantly, its characteristics are not affected by
electrical variations.
The equipment is configurable via the adjustment potentiometer for reference of armature voltage,
stability and "droop" and has voltage adjustments via analog input or via digital input. There are
"jumpers" for selection of operating frequency and type of CT used, PAR5 or PAR1.
The equipment has a state-of-the-art processor capable of executing 70 million instructions per
second and with a very high accuracy analog-to-digital converter capable of acquiring electrical
quantities with excellent resolutions allowing the equipment to perform fast and accurate
calculations providing excellent operability.
Connection to the generator is via FASTON connectors.
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