48V 50A 96% High Efficiency Switching Power Supply for Telecom Power System

• Output Type: Single
• Warranty: 2 Years
• Output Power: 2900W
• Input Voltage: Full Range
• Connection Mode: Parallel Switching Power Supply
• Starting Mode: Separate-excited Switching Power Supply
• Model NO.: GPR4850K-TI
• Voltage Regulating Mode: Width Modulation Type
• Power Supplying System: Terminal Power Distribution Equipment
• Energy Transmission: One-way Transmission
• Modulation System: PFM
• Certification: CE, UL, RoHS, ISO, CCC, CB
• Brand: Goldpower
• Transport Package: Carton
• Specification: 2U
• Trademark: Goldpower
• Origin: Shenzhen
• HS Code: 8504401990
• Production Capacity: 6000000 PCS/Year

Product Description

 96% high efficiency 48V 50A rectifier module switching power supply  for telecom power system 

Features
   
•  Compact structure, high power density of 22W/in³ ;
•  Constant current output available within output voltage 42-54V;
•  Constant power output available within output voltage 54-58V ;
•  Output voltage adjustable within 42-58Vdc
  Default voltage: 53.5V;
•  Wide operating temp. range: -33~+55°C
•  Extended operating temp. range: +55~+65°C
•  Power factor correction: ≥0.99
•  RS485 communication port
•  Input under-voltage protection
•  Input over-voltage protection
•  Output over-voltage protection
•  Output over-current protection

•  Over temperature alarm and protection
•  Paralleled work available via current sharing bus
•  Remote start up/shutdown
•  Hot -swappable
•  UL 60950, CSAC22.2 60950-00,
 VDE0805 and IEC60950 compliance
•  CE mark meets directives of 73/23/EEC
   and 93/68/EEC
•  High efficiency more than 96%
 
Applications
 
48V Distributed power system
Ethernet
Exchange
LAN, WAN
Server
Indoor wireless network
Telecom equipment
 

Specification:
 

Input
Parameter	Min.	Typ	Max.	Unit	Remarks
Input Voltage Range	90	110/220	290	Vac
Input Frequency	45	50/60	65	Hz	Rated load
Input Current			18.5	A
Power Factor	0.99				Rated input/rated load

 

Output
Parameter	Min.	Typ.	Max.	Unit	Remarks
Output Voltage Range	42	53.5	58	Vdc	Adjustable via the monitoring module (No load)
	53.5		53.8	Vdc	220V Input, 25A Output
Output Current Range	0		50	A	176~290V ac Input
	0		22	A	90~175V ac Input
Output Efficiency	94		96	%	220V AC Input (220Vac input, rated output voltage, 25% rated load current 94
	94		96	%	110V AC Input
Output Power			2900	W	Input: 200-240Vac; Output: 53.5Vdc
			1200	W	Input: 115-130Vac; Output: 53.5Vdc;
Regulation			±1	%
Weighted Psophometric Noise			2	mV
Wide Frequency Noise Voltage			50	mV	(3.4KHz~150KHz)
			20		(150KHz~30MHz)
Ripple (Vp-p)			200	mV	Rated input voltage & load, with 0.1uF film capacitor and 10uF high frequency electrolyte capacitor, oscilloscope band width of 20MHz.

 

Environmental Requirements
Parameters	Min	Typ.	Max	Unit	Remark
Operating temp	-33		55	°C
Transportation temp	-40		-70	°C
Storage temp storage temperature	-40		70	°C
Humidity	5		95	%	Relative humidity, no condensing
Altitude	0		4000	m	For operation at 3000-4000m, the operation temperature is derated by 1°C per 200m.
Acoustic noise		55		dB
Cooling	Forced cooling; Front-in & rear-out; the fan locates at front, with temperature controlled speed.

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