Application
◆ BK-DTS series electric power UPS, DBW Bypass Stable Cabinet and PD series feedback cable cabinet are designed based on power plant, transformer substation and distribution house. They have double conversion on line and zero transfer time. And they are applied to power equipment, RTU, power carrier wave and monitor etc. When line is normal, single phase (220V) and 3 phases (380V) supply stable power to load after isolation and filter. When line is abnormal or off, switches to inverter and supply power to load. When DC switch mode rectifier are low voltage or off, static switch switches to bypass. When line restore normally, automatically switch line. Inverter is overload or failed, switch to bypass. And it alarms and send signal
◆ It applies to power plant, transformer substation, distribution house etc.

Feature benefits
Adopts DSP technology
Intelligently testing and monitoring
Digital Control Static Switch and zero transfer time
The fifth generation IGBT driving inverter.
Inactive contact and RS232/485
Full isolation input
DC switch mode rectifier and line are full isolated.
Adopts electric power standard cabinet to design
Full protections including over voltage, low voltage, over current and short circuit etc
Large LCD display and user-friendly
Meter indicators.
Over 256 History record so that user analyzes and manages
Rectifier
Line (single phase and tri phase) directly send to rectifier after isolation transformer. When line is within ±10% and load is within 100%, DC voltage stabilizes within ±1%.
Inverter
It adopts SPWN technology. The DC voltage switches AC voltage with sine wave through IGBT module inverter. It may reduce distortion to the extend and volume of filtering. So it keep good dynamic characteristics when load changes.
DC switch mode rectifier
When line is low voltage and failed, DC switch mode rectifier will supply power uninterruptedly. It sends signal in discharging mode. When battery voltage is lower than discharging final voltage, it will switch to standby power equipment. When battery voltage is close to discharging final voltage, it will send warning signal.  
Line and standby power
There are two loop AC voltages. When line is abnormal or failed, will switch to standby power equipment. When they are failed, will switch to DC mode rectifier.
Static switch
Intelligent monitor
UPS status and transmissions will be sent to DCS system through RS232/RS485 and inactive contact. So it will be intelligent monitor.