Dual power switch conversion time and standby power requirements for the introduction of ATSE's purpose is to allow the load without power outage or as little as possible. So the choice is critical to know the load ATSE standard national design specification does not give a clear indicator dual power supply unit, so there is no national standard ATSE specific demands. Dual power switch principle is: trying to capture the self-excitation voltage and supply voltage phase, so that in the same phase (excitation voltage and the supply voltage in the same direction, there will be no change in the current extended to ATSE function is. To do the same phase converter has the following advantages:. ⑴ motor is only momentary interruption, motor starter will not trip the self-excitation voltage parameter table is usually self-excitation voltage of the motor when power is restored will be high, however, because it is. with the phase switching, when the electrical load is switched on only dual power supply apparatus companies, no control of the generator, no additional connection to the generator. specialized in phase detector controls the entire conversion process. ATSE, but also in the realization of this function have the following problems:. ⑴ how to capture self-excitation voltage and supply voltage phase; captured later how to catch the same phase, and how to complete the conversion in a short enough time to the current international advanced ATSE manufacturer practices are: constant and fast conversion possible. When the conversion speed is fast enough (eg 80ms advance with a second way to solve the difficulties. In addition, with the constant conversion fast enough, so long as the capture phase difference on the two-way power all the way to the supply voltage waveform and voltage waveform is left is the same, so in a short enough time, we can approximate the probability of catching considered self-excitation, the phase angle difference can be limited within a certain range (eg ± 30 °) rather than 0 °, that Japan Kyoritsu HTS type ATSE greater impact, so it should be seriously considered. STQ1 dual power automatic transfer switch standard IEC60947-6-1 "Automatic Transfer Switching Equipment" GB7251 "Low-voltage switchgear and control equipment "dual power switch Features 1. loss of pressure, phase failure, overvoltage, undervoltage protection, and start the generator, manual operation and emergency power, and other functions; 2. break through the only way to detect the common power supply, provide an alternate power detection, 3. With two circuit breakers and disconnect features dual power conversion devices, is the first PC-class family of products, easy maintenance load 4. Small and exquisite appearance dual power Category: divided into PC and CB PC level: the ability to access, load, but not for breaking short-circuit current level STQ1 CB: with overcurrent release, the ability to access and short-circuit breaking current STQ1 dual power switch Basic parameters Model: STQ1-65, STQ1- 100, STQ1-225, STQ1-400, STQ1-630, STQ1-800, STQ1-1250 frame degree rated current: 40,63,100,225,400,630,800,1250A poles: 2P, 3P, 4P rated working voltage AC230V, AC400V Rated current: 1 ~ 1250A dual power equipment business, dual power supply units, only Thai Thai Industrial Co., Ltd. Yueqing by Shanghai Branch only provide only Thai Industrial Co., Ltd. Yueqing Shanghai Branch (www.cnats.. cc) strong, credible, in Wenzhou, Zhejiang switch industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead only Thai Industries and you hand into the brilliant, for a better future!