12V 2A 24W ac dc adaptor switching power supply for LED, Medic machine, CCTV camera

1. INPUT REQUIREMENTS:

1.1 Operating range: 90-264VAC

1.2 Rated Input Voltage :100-240VAC

1.3 Input Frequency Range: 50/60Hz +/-3Hz

1.4 Input In-rush Current: 30A max

1.5 Input Current: 800mA max

2.OUTPUT REQUIREMENTS:

2.1  Output Voltage and Current

2.2   Output Voltage Regulation

   The total output voltage regulation shall be +/-5%,including the effects of line voltage variations,load current,ripple and noise,and the AC component of the load current.

2.3   Output Voltage Ripple

   The switching power supply shall not exceed the following limits in the indicated voltage for 60Hz or 50Hz ripple,switching frequency ripple and noise measured with 20MHz width.

   Ripple and Noise:50/60Hz Ripple + Switching Ripple and Noise

Ripple and Noise are measured at the end of output cables which are added a

0.1uF(104) Ceramic capacitor and a 22uF Electrolytic capacitor.

3. EFFICIENCY:

   When 120VAC line input voltage (100-240VAC),the efficiency shall be >80% at rating load.

4. DIELECTRIC STRENGTH (Hi-Pot) TEST:

   Finished product withstands with AC 1500-2000Vrms/50Hz,5mA max,

   primary to secondary, 1 minute for type test,1 second for production test.

5. INSULATION RESISTANCE:

   Primary to secondary: 10MΩ min at 500VDC. 

6. PROTECTION:

6.1   Short Circuit Protection

   If short circuit occurs,all the output should be protected. After the fault, the adapter automatically recovers.

6.2  Over Shoot

    The Output over shoot at turn-on shall not exceed 10% of normal voltage value with or without the load connected.

6.3  Start-up time

    The start-up time is less than 2 second.

7.ENVIRONMENTAL CONDITIONS:

7.1  Temperature

    Operating temperature:  0℃  to  +40℃

    Storage temperature :  -20℃ to  +60℃

7.2  Humidity

Relative humidity:≤95%

7.3  Operating Ambient Altitude

     Altitude:0-3000m

7.4   Operating at the lower temperature

      At -0℃,with the rated voltage 100-240Vac charged to the primary and unloaded and full load on the secondary 8 hours, no abnormality in electric and mechanical characteristic, after 2 hours recovery  at the room  temperature.

7.5   Operating at the high temperature

      At +40℃,with the rated voltage 100-240Vac charged to the primary and unloaded and full Load on the secondary 8 hours, no abnormality in electric and mechanical characteristic, after 2 hours recovery  at the room  temperature.

8. COOLING:

    Cooling shall be with natural convection cooling.

9.Burn-in

    The burn-in test will be performed at least 4 hours at centigrade

    degrees under full load Condition.

10.Referenced standard:

10.1  EMI Standards

    Reference  EN50082-1,EN55022-B,GB-17625.1-2003, GB-9254-1998

10.2  Safety Standards

    The adapter shall be meet certified with the following safety standards.

    EN61347-1,GB4943-2001

11.  MOUNTING CONNECTORS:

11.1  DC Output Cable

     Wire : (Optional) 20AWG*2C L=1200mm  Color: Black (.)

     Plug : (Optional) 5.5*2.1*10mm

12.  MECHANICAL FEATURES:

12.1  Dimension(Size)

     Length: 116mm

     Width: 49mm

     Height: 35mm

12.2  Weight

     The Power Supply unit : 206±10g

12.3  Vibration and shock

      No Evidence of any mechanical or functional damage after the vibration and shock testing.

12.4  Drop test

After Dropping from a hight  of   75  cm onto a wooden floor , Dropping at  6  sides  totally,  NO breakage should be happened in the test piece.

12.5  Bending Test

     Fix the power supply and its plug, apply a load of 200g to the other end, turn the cable by +/-60℃ carry out this process 1000 times, at the rate of 20 times per minutes. No abnormality in mechanical and electrical Characteristic and disconnection within 30% after the test.