Shenzhen Sanma Electric Appliance Co., Ltd manufactures a kind of high reliable power transformer by using its exclusive patent technology. It can work steadily in severe environment and provide automatic protection when serious faults occur in supply lines or loads, and return to normal operation automatically as soon as the faults are eliminated. It has unique advantages of “Three Protections”: Protection against short-circuit, against high voltage and against high temperature.

1. Protection against short-circuit

No matter how long the faults last (several hours or even dozens of days), it can provide automatic protection when loads are short-circuited or severe overloaded. Once faults eliminated, the transformer can return to normal operation.

The transformer can provide automatic protection even if the primary and secondary coil are short-circuit because of damping during the operation, in order to avoid severe accidents of a transformer burnt through which is caused by line to line short-circuit.

2. Protection against high voltage

The transformer can provide reliable protection even if the voltage rise up to 380V unconventionally, and it can return to normal operation automatically after the voltage returns to normal(220V). (During the experiment,the transformer was imposed with a voltage of 440V/50Hz, which lasts 8 hours. The transformer would resume normal operation in 10 minutes after the voltage return to 220V.)

3. Protection against high temperature

The transformer can ensure its security even if the ambient temperature reaches 120℃ (the primary voltage of the transformer is 220V, and the secondary is connected to rated load) and lasts 8 hours. The transformer can return to normal operation after abnormal ambient temperature eliminates. (The restoration time is 5～30 minutes which depends on the ambient temperature.)

The high reliable power transformer produced by our company has excellent performances. It is difficult for experimenters to damage the transformer even if they design various kinds of abnormal faults intentionally. The patent technology has been widely promoted in GREE and Haier. It is proved by a large number of statistics that the fault rate of this kind of transformers reduced to 5%　of　that before.

The patent product makes the quality of our transformers achieve the first-class level at home and helps our company maintain the market leader in air condition industry, owing to the unique patent technology, elegant materials and exquisite technics. The faults rate keeps below 10ppm. The high reliable power transformer with “Tri-protection” prevents all kinds of potential safety hazard, and will be your best choice of creating name brand and achieving great success.