Transformerless EPS
Product Overview:
LCX Power-HEPS high-frequency transformerless emergency power supply adopts high-frequency inverter architecture without traditional power frequency isolation transformer, full digital DSP control and IGBT power device.
When the mains supply is normal, the load is powered by commercial power, and the built-in intelligent charger maintains floating charge for the battery pack.
Once mains failure or abnormal voltage occurs, the system quickly switches to battery inversion and outputs pure sine-wave AC to supply emergency loads.
Compared with traditional transformer-type EPS, it features smaller volume, lighter weight, higher efficiency and lower heat generation.
It supports customized emergency backup duration, compatible with lead-acid and lithium iron phosphate batteries.
It is specially designed for fire emergency lighting, evacuation indication and critical safety loads of buildings and industrial sites.
Typical Applications:
· Fire emergency lighting, evacuation indicator, fire alarm control equipment for commercial buildings, hospitals, subway and tunnels
· Factory fire exhaust fan, fire shutter, emergency pumping equipment emergency power supply
· Highway, railway tunnel emergency lighting and monitoring equipment backup power
· Stadium, airport, large shopping mall safety emergency load power guarantee
· Industrial workshop, chemical plant safety instrument emergency power supply
· Underground space, parking lot, municipal engineering emergency power protection
Technical Specifications:
1. Topology & Structural Design High-frequency transformerless inversion topology, full digital DSP closed-loop control, IGBT high-frequency power device. Compact and lightweight structure, low idle power consumption. Support N+1 parallel expansion for large-capacity projects.
2. Electrical Performance
· Wide-range AC input voltage, adapt to unstable on-site power grid
· Pure sine wave AC output, THD ≤3%
· Mains to emergency switching time ≤200ms, meet fire load requirements
· Output voltage precision ≤±1%FS, strong overload capacity
· High conversion efficiency, low operating loss
· Emergency working time customizable, compatible with LiFePO4 & lead-acid batteries
3. Complete Multi-level Protection Input overvoltage/undervoltage protection; output overvoltage, overcurrent, short-circuit, over-temperature protection; battery over-charge, over-discharge, over-temperature protection; overload protection and EPO emergency power-off function. Fault record and alarm function.
4. Battery Management Built-in intelligent charging management with temperature compensation for charging voltage. Real-time monitoring of battery voltage, current and temperature; automatic battery fault warning, support external battery cabinet expansion.
5. HMI & Communication Interface Color LCD display with Chinese & English menu, real-time display input/output parameters, battery state, emergency running time and alarm logs. Standard RS485, dry contact; optional Ethernet/SNMP, support remote monitoring and unattended management.
6. Cooling & Environmental Adaptability Intelligent temperature-controlled fan cooling, fan speed automatic adjustment. Operating temperature: 0℃ ~ +40℃. Low noise design, suitable for indoor power distribution room, basement and fire control room.
Technical Parameters and Selection
Technical Parameters and Selection
