... time 3.Best after-sale servie STAMFORD AVR SX460: AVR SX460 is a half-wave phase-controlled ... thyristor type Automatic Voltage Regulator(AVR) and forms part of the excitation system for ... 3A Operating temperature: -40 ~ 70 Ralated AVR SUPPLY:We also supply AVR as follows: Stamford series: SX440,AS440,MX341, ... YS-5KW,YS-7KW,YS-8KW,YS-10KW AVR:ST,STC,KXT-2WC Note: buyers are ...