PSU24-3: Bộ nguồn cho trung tâm báo cháy (24V-3A)

I-Introduction: PSU24-3A Intelligent Network Power Supply Unit and PSU24-3 Intelligent Power Supply Unit are developed to solve the problem of supplying power to the field equipment, whose design output power is 100W (24VDC-4A). On the basis of switching from commercial supply to 24VDC, a standby power supply should be added in the system to ensure the whole system running normally in case of power-cut. In addition, we have designed some measures to ensure the standby power supply can be used circularly, such as charging the batteries, switching the main power supply and batteries, batteries protection etc. The dynamic display of output voltage and output current makes users know the running status of the PSU vividly. The PSU can carry out a real time monitoring to itself and send out optical and audible alarm signals during the fault of main power, batteries fault and output fault (over-current or open circuit). If connect the PSU24-3A Intelligent Network Power Supply Unit with a fire alarm control panel by loops, when there is some fault, the PSU can transfer the fault message to the control panel via the corresponding protocol to make the control panel know its running status. In addition, it can be programmed in field by hand held programmer form GST. II-Technical Specifications: 2.1 Maximum output capacity: 100W 2.2 Operating environment Temperature: 0℃～+40℃ Relative humidity≤95%, non condensing 2.3 Power Supply Main power supply: 187VAC～253VAC, ＜120W Standby power supply: 24VDC /7Ah sealed lead batteries (including) 2.4 Dimension: 400mm×310mm×115mm