Ⅱ type dual power switch control features: 1. Applicable to standby system or mutual backup systems of two mains. 2. Select switch for automatic recovery function from the time when the mains supply fails (phase, over voltage); return to normal when the main circuit; switch by the delay (can be set 1-16s) automatically into the standby power supply circuit switch by the delay (can be set 1-250s) automatically switch back to the main power supply circuit. 3. Select to switch from the vote is not automatic recovery feature dual power switch models, when Ⅰ way power failure (phase, over voltage); switch by the delay (can be set 1-16s) automatically into Ⅱ Road Power circuit; when Ⅰ way power circuit returns to normal, the switch does not cut back Ⅰ Road, only when Ⅱ way power circuit failure, the switch by the delay (can be set 1-250s) automatically switch back Ⅰ way power circuit . 4. Plug the power supply terminal selection priority circuit (125A and above). Ⅲ dual power switch control features: 1, applies to the main electricity supply, generators for backup power systems. 2, when the mains fails, the switch controller first sends a signal to start oil machine, after switching delay 3S, switch to invest in "O" for, and then by the delay (warm-up time is adjustable 1-250S) automatically into oil-supply circuit. 3, when the utility power is restored to normal, the switch by the delay (can be set 1-250S) automatically switches back to the mains supply, then delay (settable 1-250S) after dual power switch specifications, the controller sends close oil machine signals. 4, electricity, oil-phase three-phase, three-phase over under voltage detection, oil-frequency detection function over four two power switches have: ① automatic, remote control, manual control functions ② detection delay 0.5S signal to prevent malfunction. ③ automatic state with remote control "O" position. ④ key switch to select the operating mode. ⑤ can be equipped with RS-485 communication interface (optional), can be configured according to user needs. Emergency lighting in the building to be used for power distribution box dual power supply dual power switch size, automatic switching in the power distribution box, where dual power switching device has a number of features, switching current security 1. here number of small, usually less than 100A. 2. Because the size limit for emergency lighting distribution box, requiring dual power switching volume of the device should be small, otherwise it will cause the volume of the emergency lighting distribution box is too big, causing difficulties in emergency lighting distribution box installations. 3.STQ3 dual power switch automatically switch to do the conversion application is an ideal choice for the emergency lighting box, contact one of the most important features are: smaller and less 100A dual power switch, the majority have rail mounting, You can easily emergency lighting distribution box and micro-off together using rail-mount. 4. The use of dual power switch STQ3 do emergency lighting distribution of dual power switching device, not everyone uses the kind of early intermediate relays and contactors lap to implement a program of dual power circuit switching, this dual switching mode power supply, can only be known is a simple dual power switching scheme, use the show has a lot of problems out of this simple dual power switching mode can not be switched in the case of multiple power failures, but in particular The power failure (common power three-phase power failure at the same time, or receive phase intermediate relay de-energized) next to switch, so this way dual power switch is not reliable. In October 2002 the country launched a national standard ATSE of "GB / T14048.11-2002", in this standard, explicit exceptions must switch ATSE in any one phase voltage of the power supply to the backup power supply used up, so with a relay and contactors lap dual power switching scheme, is not satisfied with the national standard in the dual power switching requirements. Dual power switch quotes, 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.