1

Operating Temperature

-25 — +50(Typical value 25)

℃

2

Storage temperature

-40 — +85

℃

3

Relative humidity

≤95

%

4

Elevation

≤2000

m

5

Heat dissipation method

Conduction water cooling

-

Conductive water cooling is achieved by attaching the aluminum heat sink plate at the bottom of the power supply to a platform equipped with water cooling measures. Water flow rate must be ≥15L/min, and inlet water temperature must be ≤25°C.

6

System Cooling Method

Conduction water cooling + system air cooling

-

Conductive water cooling is achieved by attaching the aluminum heat sink plate at the bottom of the power supply to a platform equipped with water cooling measures. Water flow rate must be ≥15L/min, and inlet water temperature must be ≤35°C.

Serial Number

Project

Technical Requirements

Unit

Note

1.1

Input Voltage Range

187—528

Vac

Three-phase AC (without neutral wire)

1.2

Rated Input Voltage

208-480

Vac

1.3

Input voltage frequency

47—63(Typical value: 50/60)

Hz

1.4

Power Factor

≥0.96

-

Rated Input, Rated Load

1.5

Maximum Input Current

22

A

Rated load

1.6

Input surge current

＜30

A

Rated input, no-load

2. Output Characteristics

2.1

Output voltage setting

400

Vdc

2.2

Output Current Range

0-15

A

2.3

Overall efficiency

≥93

%

Ambient temperature, rated input/rated output

2.4

Output ripple and noise

≤2500

mVp-p

The oscilloscope bandwidth should be 20 MHz, with probes connected in parallel to a 10μF capacitor and a 104-ohm resistor.

2.5

Power-on/off overshoot amplitude

≤±5

%

2.6

Dynamic Characteristics

Loading

Output increases from 0 to full load within 10μs.

/

The output voltage shall not experience a transient drop or overshoot exceeding 1.5%, and shall not cause abnormal operation or protection of the power supply.

Dump load

Output drops from full load to zero within 10μs.

/

Modulated output

Modulation frequency: 5 Hz to 10 kHz;

Duty cycle: 20% to 100%;

Output power settings: 50%, 80%, 100%;

Arrange and combine the above conditions to test scenarios under each output setting.

Full voltage range input, with no noticeable distortion or clipping in the output pulse waveform, and no abnormal operation or protection events occurring in the power supply.

2.7

Voltage Regulation Accuracy

≤±2

%

2.8

Source adjustment rate

≤±0.5

%

2.9

Load Regulation

≤±1

%

2.10

SW startup delay time

≤3

s

Time from SW signal transitioning from high to low level to output voltage settling (no-load start)

2.11

Power-on delay

≤10

s

Time required for voltage to build from input to output when SW signal is pulled low (no-load start)

2.12

Output rise time

≤500

ms

Output voltage increases from 10% to 90% at rated load

2.13

Shutdown delay

≤50

ms

Upon receiving the shutdown signal from the control interface SW input, the power supply shall cease operation within 50 milliseconds.

2.14

Output capacitor discharge time

≤15

s

When the input voltage is disconnected, under no-load conditions, the voltage across the output storage capacitor shall decrease to below 50V within 15 seconds.

2.15

Capacitive load

1500

uF

Full voltage and full load range

2.16

Temperature coefficient

±0.02

%/℃

Rated output voltage and current, full operating temperature range