1.Overview
TheY-703N ATS controller is used in conjunction with a dual power transfer switch (TSE) to form an automatic transfer switch(ATSE)It detects abnormal conditions of grid parameters(overvoltage,undervoltage,phase loss,over frequency,under frequency,misphase sequence,etc.)and then control the transfer switch(TSE) transfer according to a predetermined mode of operation to the suitable power supply,to ensure the continuous power supply on the load side.

2.Features
1).Microcontroller-based measurement and control system with true RMS calculation for the basic parameters of the power grid;
2).Adjustable transfer delay and operation modes for various applications;
3).The combination of Chinese and English LCD dot matrix screen and LEDs providesclear and accurate information;
4).Equipped with programmable relay output contact,active and passive fire signal interface,optional communication interface;
5).Can check 10 fault records;
6).Protection level:IP50.

3.Operating Environment
3.1 The ambient air temperature should range between -20°C and +70°C;
3.2 Installation site:The altitude should be the same as TSE;
3.3 Pollution level:Level 3.With no explosive hazards,corrosive gases,liquids,or conductive dust that may damage metal components or insulation in the surrounding air;
3.4 Atmospheric conditions:The ambient air temperature should not exceed +40°C,with an average temperature within 24 hours not,When the maximum temperature is +40°C,the relative humidity should not exceed 50%.Higher humidity is permissible at lower temperatures(e.g.,up to 90%at+20℃).Special measures should be taken for occasional condensation due to temperature changes;
3.5 If these conditions above are not met,please consult our company for further solutions.

4.Controller Specification