| Environmental Conditions |
| Project | Technical Indicators | Unit | Remarks |
| Remarks | -40 to +70 (Typical value: 25) | ℃ | -40°C requires normal startup capability; during single-unit thermal evaluation, the intake air temperature is set to 70°C with an airflow rate of 34 CFM for acceptance testing; safety certification temperature range is -40°C to +65°C. |
| Storage temperature | -40—+70(Typical value: 25) | ℃ | |
| Relative Humidity | 5—95 | % | No condensation; the power supply module must be able to operate normally. |
| Elevation | -60—5000 | m | Above 1,800 meters, the system's maximum operating temperature decreases by 1°C for every 220-meter increase in altitude. |
| Heat dissipation | / | Utilizes system fans for cooling, with air intake on the left and exhaust on the right. The power supply reports temperature readings to the system, which then automatically adjusts fan speed based on the reported temperature. Maximum average airflow velocity at the intake port is 2.5 m/s. |
| Input Characteristics |
| Project | Technical Requirements | Unit | Remarks |
| Rated Input Voltage Range | 100—240 | Vac | AC |
| Rated Input Voltage Range | 240/336 | Vdc | DC |
| AC Input Voltage Range | 90—290(Typical value:110/220) | Vac | Can withstand short-term AC voltage inputs with an effective value of 318Vac without damage. Short-term: 48 hours, with annual operating time not exceeding 15 days; short-term operation is verified based on 48 hours. The power supply remains undamaged, component stress does not exceed specifications, and safety certification voltage range is 90-264Vac. |
| DC Input Voltage Range | 190—400 | Vdc | Requires normal operation under DC power supply conditions, with device selection meeting HVDC certification requirements. Reverse polarity support upon power-up. Achieved DC 240Vdc certification. |
| AC input voltage frequency | 45—65 | Hz | |
| (Typical value:50/60) |
| Power factor | ≥0.95 | / | Rated input (110/220Vac), rated load. |
| Power conversion point | 155—175 | Vac | For situations where power is inconsistent during AC high-voltage and low-voltage input, refer to Figure 1. |
| Maximum Input Current | ≤10 | A | Test conditions: 176Vac, rated load |
| Input surge current | ≤40 | A | <40A, 264Vac input, cold start, meets standard requirements: ETSI 300 132-3 |
| AC Input Standard | Single-phase three-wire input (L/N/P) | / | Supports single-phase and 110Vac dual-wire input |
| Output Characteristics |
| Output Power | 1500 | W | 176—290Vac、190—400Vdc |
| 800 | W | 90—176Vac |
| Output the set voltage | 53.25—53.50—53.75 | Vdc | Tested under rated input and half-load output conditions |
| Output Voltage Range | 51.895—53.5—55.105 | Vdc | |
| Voltage Regulation Accuracy | ≤±3 | % | Full voltage input range, full load output |
| Source adjustment rate | ≤±2 | % | Rated current output, full voltage range variation |
| Load Regulation | ≤±3 | % | Rated voltage input, full load variation |
| Output Efficiency | ≥92 | % | 220Vac input / half-load output, ambient temperature |
| ≥88 | % | 110Vac input/rated load output, normal temperature |
| Ripple + Noise (Peak-to-Peak) | ≤500 | mV | Tests were conducted within the input range of 90Vac to 264Vac or 190Vdc to 380Vdc and across the full load range at temperatures between -5°C and +70°C. During testing, a 0.1uF ceramic capacitor and a 10uF electrolytic capacitor were connected in parallel at the output terminals. The oscilloscope bandwidth was set to 20MHz. |
| ≤750 | mV | Tests were conducted within the input range of 90Vac to 264Vac or 190Vdc to 380Vdc and across the full load range at temperatures between -40°C and -5°C. During testing, a 0.1uF ceramic capacitor and a 10uF electrolytic capacitor were connected in parallel at the output terminals. The oscilloscope bandwidth was set to 20MHz. |
| ≤1000 | mV | Tests were conducted within the input range of 264Vac to 290Vac or 380Vdc to 400Vdc and across the full load range at temperatures between -40°C and +70°C. During testing, a 0.1uF ceramic capacitor and a 10uF electrolytic capacitor were connected in parallel at the output terminals. The oscilloscope bandwidth was set to 20MHz. |
| Dynamic Response Recovery Time | ≤200 | us | Load variation: 25%~50%~25% or 50%~75%~50% Current change rate: 0.1A/μs Cycle: 4ms |
| Power-on/off overshoot | ≤±5 | % | Full input voltage and full load range, smooth power-up/power-down waveforms without hooking or oscillation. |
| Dynamic response overshoot | ≤±5 | % | Load variation: 25%~50%~25% or 50%~75%~50% Current change rate: 0.1A/μs Cycle: 4ms |
| Output rise time | ≤200 | ms | -5°C to +70°C, output voltage increases from 10% to 90% at full load. |
| ≤3000 | ms | -40°C to -5°C, output voltage increases from 10% to 90% at full load. |
| Power-on output delay | ≤3 | s | -5°C to +70°C, full input/full load |
| ≤3 | min | -40°C to -5°C, full input/full load |
| Hold time | ≥20 | ms | Input 220Vac/240Vdc/336Vdc, output at half load, time from input power-down to output voltage drop to 42V. |
| Capacitive load | ≤3000 | uF | Full input voltage, full load range testing |
| Temperature coefficient | ≤±0.02 | %/℃ | Rated output voltage and output current, full operating temperature range |
| Current sharing method | Employing the drooping method for current distribution | / | |
| Current Unbalance | ≤±10 | % | Within the single-unit rated output current range of 50% to 100%, the load imbalance of the 53.5V main circuit shall not exceed ±10% of the rated DC output current. The removal or failure of a single power supply shall not cause system power loss, meaning the bus voltage shall not fall below 44V. |
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