... for example input 176V~264V, the degree ofaccuracy is 5% and 5 relays. 2,Accuracy of voltage stabilization: 220±8% 3 ... case for protection.Q 4. what kind of material of transformer? A. we have two types, one 100% copper and ... , voltage regulator ,silicon rectifying chargers, low voltage apparatus, reactors, current transformers, voltage transformers and circuit breakers. We have passed Quality ...