AVR R438 Regolatore di Tensione Automatico per Generatore Regolazione Volt
R438 AVR CARD FOR SHUNT, AREP or PMG ALTERNATORS. Operation conditions R438 Genset AVR. Connexion and setting for R438 AVR Settings are done through the R438 AVR. It is designed for alternators with a AREP or PMG excitation.