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Switching power supply test reporting requirements PDF 打印 E-mail
The reports of power supply products identified tests are required to provide test data, and conclusions. Reduce the test items are available upon request for testing and make clear the incompetent terms for non-conforming product that failed the test items. One. Input characteristics:
1. Working range of input voltage and the voltage changes
2. Input voltage and frequency changes in the frequency range
3. Rated input current: refers to the input voltage and output current conditions at rated current.
4. Subsidence and the instantaneous input power of switching power supply SMPS: This is a moment when the input voltage drop or short interruption of the state, use the rated output voltage and current to be limited. The indices of the test voltage and time.
5. The impact of current
6. Leakage current
7. Efficiency: Because the index and heat, and therefore to be considered when thermal efficiency.
8. Test to indicate the input single-phase 2-wire or 3-phase three-wire.
 
II. Output characteristics of power supply (SMPS):
1. Rated output voltage
2. Rated output current
3. Regulation accuracy
1) Voltage stability
2) The current regulation
3) Ripple Noise: including the maximum ripple voltage; maximum ripple noise voltage.
4. Instantaneous current the output voltage changes due to changes in value.
 
III. Subsidiary of functional requirements for power supply (SMPS):
1. Over-current protection
2. Over-voltage protection
3. Input under-voltage protection
4. Overheat protection
5. Insulation resistance: input and case; input terminals and output terminals; output terminal and the shell.
6. Insulation voltage: playing high-pressure: input and output, input and ground, the input AC between the two, according to national standards high value.
 
IV. Structural Specifications of power supply (SMPS):
1. Shape conditions: such as whether the outer casing.
2. Determine the shape dimensions and dimensional tolerances.
3. Installation conditions: the installation location, mounting holes and so on.
4. Cooling conditions: mandatory or self-cooling and ventilation direction, air volume and pore size.
5. Interface location and identification
6. Operating components (output voltage adjustable resistance, switch, indicator) of the location and the location of the text prompts.
7. Weight
 
Five. Use of environmental conditions:
1. Temperature
2. Humidity
3. Resistance to vibration, shock
 
VI. Other conditions:
1. Input Noise
2. Surge
3. Static noise (with the shell are required)
 
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