300W RF Power Amplifier Power Supply VPSU-300

Product Description

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300W RF Power Amplifier Power Supply VPSU-300

The VPSU-300 power module performs AC to DC conversion, transforming an input voltage range of 176VAC to 264VAC (nominal input voltage: 220VAC) into a DC voltage output. It features a wide input voltage range, high output voltage accuracy, high reliability, high efficiency, high power density, low ripple noise, and strong environmental adaptability. This makes it suitable for applications in military, industrial control, communications, and other fields.

Size and external structure

Note:

1. Conductive natural color oxidation;

2. Laser engraving: except for input/output information, there is no other content;

3. Heat dissipation: conduction cooling and heat dissipation;

4. Weight ≤ 2kg.

Basic Electrical Parameters of the Product

1. Input Power Characteristics: 220V (176V~264V) AC power supply;

2. Input Frequency Range: 45Hz~65Hz;

3. Input Power Factor: ≥0.95 (at rated load);

4. Output: 28V/300W;

5. Output Voltage Accuracy: ≤1% (at rated conditions);

6. Voltage Regulation: ≤1%;

7. Load Regulation: ≤2%;

8. Output Ripple: ≤1%;

9. Capacitive Load: ≤3000uF;

10. Efficiency: ≥83%;

11. Power-On Requirement: Output is provided immediately upon power-up.

12. Insulation Dielectric Strength:

• Input to output: 1000VAC for 60 seconds, no flashover or similar phenomena;
• Input to shell: 1000VAC for 60 seconds, no flashover or similar phenomena;
• Output to shell: 250VDC for 60 seconds, no flashover or similar phenomena.

13. Insulation Resistance:

• Input to output: ≥100MΩ (500VDC);
• Input to shell: ≥100MΩ (500VDC);
• Output to shell: ≥100MΩ (250VDC).

Environmental Testing

1. Overall Requirements

• Storage Temperature: -45°C to +70°C;
• Operating Temperature (Shell): -40°C to +70°C;
• Relative Humidity: ≤98% (at 25°C);
• Altitude: ≤5000m.

2. Low-Temperature Testing

Store at -45°C for 48 hours, then raise to -40°C and store for 2 hours. After that, power on and conduct low-temperature testing at -40°C. The test results should meet the product's electrical performance specifications. After restoring to normal temperature for 8 hours, conduct normal temperature testing. The test results should also meet the product's electrical performance specifications.

3. High-Temperature Testing

Store at +70°C for 48 hours, then power on and conduct high-temperature testing at +70°C. The test results should meet the product's electrical performance specifications. After restoring to normal temperature for 8 hours, conduct normal temperature testing. The test results should also meet the product's electrical performance specifications.

Storage Requirements

1. If the product is not in use, it should be stored in its packaging box. The storage environment should have a temperature range of -10°C to +40°C, with relative humidity not exceeding 80%. The area should be dry, ventilated, and free of corrosive gases.

2. The packaging box should be placed more than 20cm above the ground, and at least 50cm away from walls, heat sources, ventilation openings, and windows.

3. Under these conditions, the storage period is 2 years. After 2 years, the product should be re-inspected.

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