R120 Leroy Somer automatic voltage regulator (AVR) is a compact, high-performance unit, employing advanced technology and efficient components to achieve significant miniaturization. It is compatible with 3-phase and 1-phase AC brushless generators within specified input and output limits, ensuring excellent reliability.
The R120 AVR supplies DC excitation to the exciter field of brushless generators, maintaining voltage within operational limits from no-load to full-load conditions. It typically recovers 98% of rated voltage within 0.5 seconds after sudden loading. Transient performance, such as voltage dip and recovery time, depends largely on generator and exciter design parameters.
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