The basic model, the difference at the end of the dual power products are: basic dual power: ① voltage protection: when the power supply voltage is greater than 115%, to achieve conversion. ② voltage protection: when the power supply voltage is less than 85%, to achieve conversion. ③ phase protection: When the power supply at any one phase to achieve conversion. ④ Reset button: When an overload or short-circuit fault, the circuit breaker tripped offer dual power switch, any circuit breaker can not be closed. ⑤ fire linkage: When there is a fire signal is input, the control device causes the circuit breaker off, no conversion. End dual power: ① Reset button: When overload or short-circuit fault dual power switch, circuit breaker tripped, any circuit breaker can not be closed. ② fire linkage: When there is a fire signal is input, the control device causes the circuit breaker off, no conversion. ③ Manual - Automatic conversion function: set the manual - automatic conversion button. Manual: Set the manual operation button. ④ double points Function: double points button, press the button double points, the main power supply and backup power Disconnect all. Our dual power automatic transfer switch on the switch and the market time to compare STQ4 series dual power automatic transfer switch is my factory developed its own new high performance automatic transfer switching equipment, given by two GM Series Plastic insulation voltage 690V and below, the exchange 50Hz dual power supply emergency power supply system that can be completed automatically converted common power supply and backup power supply to the load off between. Mechanical switch currently used on the market, generally divided into two kinds of electromagnetic drive and motor drive, electromagnetic drive conversion faster, like a general is 2-4s. Therefore, according to the load off time permitted to choose ATSE forms and types. Here emphasize that: A fast conversion speed again, and you can not omit the UPS. ATSE, UPS is the emergency power supply system from the different interactions can not be replaced electrical equipment. Select ATSE conversion time, to distinguish it from time to determine whether or not to convert. To clear whether the conversion of judgment, one should first look at the power load on the power supply requirements of dual power switch factory, the main power supply voltage and frequency, so ATSE also monitors the input voltage and frequency of the power supply. Most load above; frequency of more than 95% of the rated frequency. In some special cases, power requirements may be higher. The delay occurs when the system is in the selection so we, the grid is often affected by outside interference and voltage fluctuations (frequency fluctuations are relatively rare) dual power switch company, then the choice of low voltage to a value other than regular), taking into account of ATSE Conversion time for several seconds, the set delay time for the second level can be. When setting the conversion of delay as the consumer, to determine a clear understanding of ATSE conversion time delay difference between mechanical conversion time. Dual power switch price _ double-Electric (certified) _ dual power switch only by the Thai Industrial Co., Ltd. Shanghai Branch Yueqing offer. Shanghai only Thai Industrial Co., Ltd. Yueqing Branch (www.cnats.cc) is Wenzhou, Zhejiang Province, switch leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the only Thai Industries led the staff warmly welcome all inquiries negotiations to create only a better future for Thai Industries.