1) The standard power transformer product series has a capacity of 8~1500VA, a small voltage regulation, and a temperature rise of only 40°C at full load, which allows short-term overload operation, and is suitable for high-demand use occasions. The primary winding is insulated with grade B (130°C) polyester film, which is required to be wrapped with at least three layers of insulating tape, which can withstand the withstand voltage test of AC 4000V and 1min.
2) The capacity of the economical power transformer product series is 50~1500VA.
3) The capacity of the isolation transformer product series is 50~1000VA, and all primary leads must be double-insulated conductors. The maximum temperature rise of the transformer is less than 45°C. In addition, the isolation transformer for medical use is also required to have a temperature protection switch assembled in the primary winding, when the core temperature reaches 120 °C, the temperature protection switch is disconnected, and when the temperature returns to normal, the switch automatically resets and closes.