... -300 IF: 315KVA power transformer to work. The SCR does not work IF 315KVA transformer, severe fever, and even burned. 5 ... cycle is long-term use, the device is not within the scale is not blocked by water, greatly reducing the failure, saving ... heating device has been adopted a triac as a switch. Not self on/off, low efficiency, poor load stability and intermittent oscillation ...