... :TZ relay singlephase voltage stabilizer adopts double sampling, double stabilizing voltage, and advanced electronic automatic controller, which adopts time-base IC for time-delay ... voltage: ≤250V Dielectric strength: 1,500V/min Delayed time: 3-10mInsulation resistance: 2MΩ relay type stabilizer(AVR),voltager regultor,SVR,TZ-350VA ...