Communication Power Supply-Shenzhen VAPEL Power Supply Technology Co.,Ltd.

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2200W Communication Power Supply

The power supply module performs DC-to-DC conversion, operating normally with +48/-48V input. This unit delivers a rated 12V DC output and supports current sharing in 1+0, 1+1, 2+1, and 2+2 parallel configurations. Operating temperature range: -25°C to 55°C. Includes an enclosure and fan for air-cooled heat dissipation, with airflow directed from output terminals to input terminals. The power supply incorporates overcurrent protection, output overvoltage protection, and overheat protection.

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Technical Specifications

Environmental Conditions
Project	Technical Specifications	Unit	Remarks
Operating Temperature	-25～+55	℃	Starts at -40°C, no performance requirements;
Storage temperature	-40～+70	℃
Relative humidity	5～95	%	non-condensing
Elevation	-60～5000	m	Within the range of 1800m to 5000m, the maximum temperature rating decreases by 1°C for every 220m increase in altitude.
Acoustic Noise	≤69(Sound power)	dBA	35 degrees, 862W, 48Vdc input; tested in 6 directions at a distance of 1 meter.
Working Atmospheric Pressure	53～106	Kpa
Heat dissipation	Features built-in fan for air-cooled heat dissipation. Power supply panel exhausts air sideways (airflow direction: from output terminals to input terminals).
Input Characteristics
-48V input voltage range	-38.4～-72(Rated -48)		Vdc
+48V input voltage range	38.4～57(Rated +48)		Vdc
-48V Input Specification Definition: Connect the positive input terminal [RTN(+)] to ground in accordance with the customer's system. For this individual power supply unit, connect the high-potential input to the [RTN(+)] terminal of the power input port, and connect the low-potential input to the [NEG(-)] terminal of the power input port.
-48V Input Specification Definition: Connect the positive input terminal [RTN(+)] to ground in accordance with the customer's system. For this individual power supply unit, connect the high-potential input to the [RTN(+)] terminal of the power input port, and connect the low-potential input to the [NEG(-)] terminal of the power input port.
Maximum Input Current	63	A
Input surge current	94.5	A
Output Characteristics
Output Voltage Setpoint	12.03～12.27	Vdc	Rated input, 1100W output, tested under high-temperature, normal-temperature, and low-temperature conditions.
	(Typical value 12.15)	Vdc
Output Voltage Range	11.80～12.50	Vdc	Full-range (operating temperature, input voltage, output load) testing and acceptance.
	(Typical value 12.15)	Vdc
Output Power	2200	W
Minimum load	0	W	The unit can be started and operate normally under no-load conditions.
Voltage Regulation Accuracy	≤±3	%	Full input, output, and temperature range
Source adjustment rate	≤±1	%	Rated current output, full voltage range variation
Load Regulation	≤±3	%	Rated voltage input, full load variation
Output Efficiency	10%Iout：≥90	%	1. 53.5Vdc input (fan externally powered, tested at 25°C ambient temperature). 2. 20% rated load current (fan externally powered, tested at 25°C ambient temperature). R&D testing requires acceptance with a 0.1% margin; production testing efficiency threshold must not be lower than 94%. 3. Peak efficiency up to 95% (R&D testing accepts 0.1% margin; production testing efficiency threshold no less than 95%) (53.5Vdc input, load range 30%–60%, fan externally powered, tested at 25°C ambient temperature).
	20%Iout：≥94	%
	50%Iout：≥94	%
	100%Iout：≥91	%
Output ripple and noise	≤300	mVp-p	Full input range, output power ≤20W or -25°C to -5°C. During testing, connect one 0.1uF ceramic or gold-film capacitor and one 10uF electrolytic capacitor in parallel at the output terminal. Set the oscilloscope bandwidth to 20MHz.
	≤200	mVp-p	Full input range, temperature -5°C to 55°C, and power >20W;

Technical Specifications

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