48v rack-mounted dc power system

Key Attributes.

Features: 1. Standard 19", 2U sub-rack, easy to be embedded into all kinds of telecom equipment. 2. System total capacity up to 2.4KW with 15A 3. Rectifier; 3.2KW with 20A rectifier 4. Wide AC input range 90V to 280V. 5. PFC technique features the system high efficiency, energy-saving and up to 0.99 power factor. 6. Intelligent fan-cooling technique brings good cooling performance, low failure rate and high reliability. 7. Fast on-line expansion of rectifier modules enabled by hot-swap. N+1 rectifier module redundancy 8. Batteries monitoring and management enables backup batteries well maintained 9. RS232/RS485 communication interface 10. SNMP optional 11. 4 dry contacts output and 6 environment data dry contacts input. Introduction: DUMC 2U rack power system is compact and intelligent power system containing rectifier module, controller module, LVD, 1 battery and 5 loads MCBs. It supports remote monitoring and management with SNMP and 4 dry contacts output and 6 environment data dry contacts input. Applications: Fiber optic network Access network Transmission equipment Mobile communication Satellite communication ground station 2G, 3G base station Technical Specifications AC Input: Voltage: 1 phase three wire 220VAC; 90 ~ 175V reduced power output; 176 ~ 280 full power output(full load); Frequency: 45 ~ 65Hz; Rect. Max. Current: 11A Power Factor: = 0.99 Protection: Soft start; Surge protection; Input/Output circuit breaker; Short circuit proof; Temperature sensor to shut down if overheats; DC Output: Voltage: -48V(nominal); Voltage Range: -42V ~ -57.6V; Current: 15A to 30A (two modules maximum) with DZY-48/15H Rectifiers; 20A to 40A (two modules maximum) with DZY-48/20H Rectifiers; Peak-peak noise: < 200mV; (20MHz) Psophometric noise: < 2.0mV Audible noise: < 60dB