AC/DC, 28V 8A, 6V 10A, 9.5V 1A Power Supply

• Customization: Available
• Output Type: Triple
• Warranty: 2 Years
• Model NO.: GPAD281M28-3A
• Output Power: 280W
• Input Voltage: 165-295V
• Certification: CE, RoHS, CCC, CB, FCC
• Brand: Goldpower
• Transport Package: Carton
• Specification: 230mm*95mm*90mm
• Trademark: Goldpower
• Origin: China
• HS Code: 8504401400

Product Description

1 INTRODUCTION
GPAD281M28-3A is the AC/DC power supply of middle power with tri-outputs. Due to the latest circuit design, it is compact and of reliable performance. It has the wide range of input voltage and has many functions including the functions of input over-voltage and wanting voltage, output short-circuit, over-current, over-voltage and over-heating. It also has the alarm function and the cooling way of natural conductive. The power supply is designed strictly in accordance with the safety regulations, which conforms to the safety standards and requirements of information technology.
2. SPECIFICATION REQUIREMENTS
2.1 Environmental Requirements
2.1.1 Operating temperature:-30ºC~+55ºC
2.1.2 Storage temperature:-45ºC~+85ºC
2.1.3 Relative humidity:10%~90%
2.1.4 Absolute altitude:≤3000m
2.1.5 Atmospheric pressure:70~106KPa
2.1.6 Cooling:natural conductive
2.2 Input Requirements

Item	Unit	Min	Typical	Max	Testing Conditions
Input voltage range	Vac	165	220	295
Range of input voltage frequency	Hz	47	50	63

2.3 Output Electric Requirements
2.3.1 Basic output requirements

Output voltage	Output current range	Regulator precession	Load regulation	Voltage regulation	Ripple +Noise
+28V	0.3A~8A	≤±2%	≤±2%	≤±1%	≤150mV
+6V	0A~10A	≤±2%	≤±2%	≤±1%	≤70mV
+9.5V	0A~1A	8.9~9.8V	-	-	≤90mV

Remark: During the ripple testing, it is measured under the rated voltage input and output, with 0.1UF filmy capacitor and 10UF/50V high frequency electrolytic capacitor on output, 20MHz bandwidth of oscillograph.
2.3.2 Other requirements

Item	Unit	Min	Typical	Max	Testing Conditions
Output Power	W	-	280		Natural cooling/full load
Output Efficiency	%	80		-	Rated input/output
Temperature coefficient	/ºC			±0.02%

2.4 Protection

Item	Unit	Min	Typical	Max	Recovery characteristics
Input wanting voltage protection	V	130		145	+28V with 3A @ testing
The recovery point of input wanting voltage protection	V	150		165
Input over-voltage protection	V	300		320	+28V with 3A @ testing
The recovery point of input over-voltage protection	V	290		305
+28V output over-voltage protection	V	29	-	31	auto recovery
+28V output limited current protection	A	11		15	auto recovery
+6V output limited current protection	A	12		16
+9.5V output limited current protection	A	1.5		5
Over-heating protection	ºC	95		105	auto recovery
Short-current protection		-	-	-	It can be short-circuit for a long time, and auto recovery

2.5 SAFETY

Item	Level	Standards(or testing conditions)
Insulation voltage (input to output)	1500Vac	1500Vac /1Min / Leakage Current≤10mA
Insulation voltage ( input to ground)	1500Vac	1500Vac /1Min / Leakage Current≤10mA
Insulation voltage (output to ground)	500Vdc	500Vdc /1Min / Leakage Current≤10mA
Insulation resistance	10MΩ	Under normal atmospheric pressure, and when the relative humidity is 90%, and the testing voltage is DC 500v, for the power supply, the insulation resistance of input to output, input to ground, and output to ground is no less than 10MΩ.

Remark: remove the discharge tube at the time of testing.
2.6 EMC

Item	Index requirements	Standards
CE	CLASS B	EN55022
RE	CLASS B	EN55022
ESD	There is no influence on the operation of power supply when charge on the case after power supply is encased Tangent discharge:±6KV Air discharge:±8KV	EN61000-4-2(B)

2.7 Other requirements

Item	Index requirements	Performance
Noise	The noise of power supply should be less than 55dB(A), the condition is in the range of input voltage and output voltage and current, the distance is 1 meter from front , back, right and left, and 1.5 meter from upper and underside.	Pass
MTBF	100,000H
Vibration	>Frequency : 5 to 10 Hz >Amplitude : 3.5mm,9~200Hz >Direction : 3 directions >Sweep time : 50minutes(50minute per one way) > acceleration:10m/s2, > there is no influence on power supply.	Pass
Shock	Half-sine wave,acceleration: 20G,Amplitude 11ms,Direction : 3 directions(X,Y,Z) 3 times per one direction	Pass
Dustproof	Has some function of dustproof	Pass
Odor	No peculiar smell and deleterious gas	Pass