China Dual Output UPS SMPS 48V 54V 500W Power Supply Suppliers, Manufacturers - Factory Direct Price

Product Details

As a professional manufacturer in China, Starwell would like to provide you high quality Dual Output UPS SMPS 48V 54V 500W Power Supply. The KDC500-48 is a sophisticated 500W Dual Output Uninterruptible Power Supply (UPS) specifically engineered for critical LED lighting systems and DC backup applications. Operating with nominal outputs of 48V and a peak/bulk charge voltage of 54V, this unit seamlessly integrates switching mode power supply (SMPS) technology with battery backup functionality.

Intelligent Charging & Status Indication

Designed for real-time monitoring, the power supply features a tri-color LED indicator system: Orange indicates the unit is actively charging the connected battery, Green confirms a full charge state, and Red signifies that the system is in discharge mode (running on battery backup). This clear visual feedback allows for immediate status assessment without additional testing equipment.

Dual Output Architecture

Unlike standard power supplies, the KDC500-48 provides separate terminals for load connection and battery integration. The dual-output design allows it to simultaneously power your LED equipment while maintaining an optimal charge on a backup battery. When AC input fails, the unit automatically and seamlessly transfers to battery power, ensuring zero-downtime operation for emergency lighting, security systems, or industrial displays.

Quality & Safety Assured

Every unit undergoes rigorous factory testing, as evidenced by the HI-POT (High Potential) PASS, QC PASS markings, and PASS stamps visible on the unit. This confirms dielectric strength testing and quality control compliance. The input accepts 176-264VAC at 3A, 50/60Hz, making it compatible with standard global industrial voltages.

Durable & Verifiable

The terminal layout is clearly labeled (B+, B-, V+, V-), simplifying field wiring. The physical markings suggest a robust, certified assembly line process.

Product Specification:

1,Small size, high power;
2,Wide range of AC input voltage;
3,Short circuit, overload, overvoltage protection.
4,Other output voltage also can be made,such as18V,21V,42V etc.
parameter Item No.		KDC500-48
		CH1	CH2
OUTPUT	Output Voltage	+48V	+54V(charging)
	Rated Current	8.2A	2A
	Output Current Range	0- 8.2A	0-2A
	Rated power	501.6w
	Ripple	150mVp-p	200mVp-p
	ADJ.output range	±10%
	Output Accuracy	±5%	±5%
	Line Regulation	±0.5%	±1%
	Load Regulation	±0.5%	±0.4%
	Set up,Rise,Hold up time	300ms,50ms,20ms
INPUT	Input Voltage range	88~132V,176~264VAC
	Input current	6A/115V,3A/230VAC
	Input frequency	47~63Hz
	Efficiency	>85% @ 220VAC
	Inrush current	COLD START 40A/230V
	Leakage Current	<0.5mA/240VAC
Protection	Over load protection	105~150%
	Over voltage	------
ENVIRONMENT	Working Temp.,Humidity	-20~50℃,10~90% RH,No condensation
	Storage Temp.,Humidity	-20~85℃,10~95% RH.
	Temp.Coefficeent	±0.03%/℃(0~50℃)
	Vibration	10~500Hz, 2G 10min./1cycle, PERIOD FOR 60min. EACH AXES
SAFETY&EMC	Safety standards	GB4943
	Withstand Voltage	I/P-O/P,I/P-FG:1.5KV;O/P-FG:0.5KVAC 1min.
	Insulation resistance	I/P-O/P, I/P-FG, O/P-FG:500VDC / 100M Ohms
	EMC standards	------
OTHER	Dimension	215×110×50mm
	Weight	1Kg

Note:

1. All parameters 220VAC input, rated load, ambient temperature 25 ℃, measured under conditions of 70% humidity; 2.Accuracy: includes set up tolerance, line regulation, load regulation and so on; 3. Ripple Test: 30cm long strands connect the power supply and the load on the load side and 0.1u and 47u capacitor to 20MHz oscilloscope measured at the load end; 4. Line regulation: at rated load conditions, the input voltage changes from low to high measured; 5. Load regulation: the measured output load from 20% to 100% load change measured, other load is fixed at 60% of the load;

With a total rated power of 500W, this unit seamlessly integrates SMPS technology with UPS functionality. Under normal AC operation, it powers connected equipment while maintaining an optimal charge on a backup battery. When input power fails, the supply automatically transfers to battery mode, ensuring zero-downtime operation for emergency lighting, security systems, and industrial displays.

The KDC500-48 accepts a wide input range of 88–132VAC or 176–264VAC (selectable), with >85% efficiency at 220VAC. Output voltage is adjustable within ±10% via an onboard potentiometer. Ripple is kept low at 150mVp-p on CH1 and 200mVp-p on CH2, making it suitable for noise-sensitive LED applications.

Additional features include built-in overvoltage, overload, short-circuit, and over-temperature protections, a cold start inrush current of 40A at 230V, and leakage current below 0.5mA at 240VAC. Setup, rise, and hold-up times are 300ms, 50ms, and 20ms respectively.

For reliable, uninterrupted 48V power with intelligent battery management, the KDC500-48 is the ideal choice.

Product Features:

1,With wide application,they had been used in LED lighting,ACS,medical and beauty device,electrical power system,communication system,military industry and others.

2,Some models achieved CB,CE,CCC,ETL,ISO,ROHS certification now.

3,There are more than 1,000 kinds of models.

4. Small size, high power

5. Wide range of AC input voltage

6. Short circuit, overload, overvoltage protection

Other output voltage also can be made, such as 18V,21V, 42V etc.

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