When the AC input power is normal, the power supply device outputs directly through the transfer switch, and Battery pack Charge. In case of interruption (such as power interruption, voltage does not meet power supply requirements), EPS emergency power supply The stored energy of the storage battery is used to discharge, and the load is supplied with power after being transformed by the inverter and switched to the emergency state through the change-over switch. When the load is a motor, Lianxin EPS can also carry out soft start output according to the starting characteristics of the motor, without the need for users to equip frequency converters or soft starters, which saves a lot of investment. LYD series (fire protection) lighting emergency power supply is used to supply power for emergency lighting load by AC power grid through mutual switching device under daily safety state, and charger is used to intelligently charge standby battery. In case of a fire accident in the building, the fire control center will provide the fire signal, start the inverter power supply, reverse the standby battery into a stable AC power supply, and at the same time, the mutual transfer device will immediately switch to the inverter power supply output to continue to provide sine wave AC power for the emergency lighting load. Ensure the safe evacuation of personnel.
[Product features] Imported Mitsubishi IPM Intelligent power module Assembly, American TI DSP digital microprocessor control, SPWM pulse width modulation ★ with fire linkage interface, LCD display, with manual/automatic and forced/emergency switches, complete functions ★ pure sine wave output, with isolation transformer, patented technology, low harmonic content, stable performance, reliable operation ★ independent intellectual property rights, perfect protection functions, host life up to 20 years ★ unattended, automatic switching (3ms) For special loads, 0ms electronic switching ★ modular design and installation can be provided for easy operation, and modular host can be provided for easy installation. [Product use] ★ Square/station/park/stadium/exhibition center and other important places ★ Fire power: elevator/spray pump/roller shutter door, etc. ★ High rise building power: elevator/water pump/fan/central air conditioning, etc. ★ Financial system equipment power ★ military radar /Airport/Vehicle Mobile power station /Civil air defense passage/underground facilities ★ Hospital operating room/government office building/large supermarket/shopping mall ★ Industrial electricity: metallurgy/textile/petrochemical/electricity, etc. 
