1

Operating Temperature

-25 — +45(Typical value 25)

℃

2

Storage temperature

-41 — +69

℃

3

Relative humidity

≤93

%

35℃ Temperature Environment

4

Elevation

≤2000

m

5

Heat dissipation method

Conduction water cooling

-

Coolant inlet temperature ≤25°C; Flow rate ≥20 L/min

6

System Cooling Method

Conduction water cooling + system air cooling

-

Coolant inlet temperature ≤35°C; Flow rate ≥20 L/min

Serial Number

Project

Technical Requirements

Unit

Note

1.1

Input Voltage Range

187—480Vac

Vac

Three-phase AC (without neutral wire)

1.2

Rated Input Voltage

208-380

Vac

1.3

Input voltage frequency

47—63(Typical value: 50/60)

Hz

1.4

Power factor

≥0.95

-

Rated Input, Rated Load

1.5

Maximum Input Current

72

A

Rated load

1.6

Input inrush current

＜1.5

times

The maximum input surge peak current shall not exceed 1.5 times the rated current.

Note: Due to the microseconds generated by the EMI circuit

The surge current is not considered.

2. Output Characteristics

2.1

Output the set voltage

250±3

Vdc

Half a year

2.2

Output Voltage Range

10-250

Vdc

The main circuit supplies 0-5VDC externally via VR1, corresponding to 10-250VDC.

2.2

Main Output Voltage Accuracy

±3

%

Full input, full output

Auxiliary Output Voltage Accuracy

±3

%

2.3

Output Current Range

0-100

A

Main output current: 10-100VDC output corresponds to 20-100A 100-200VDC output corresponds to 100A 200-250VDC constant power 20KW

0-12.5

A

Auxiliary circuit output current

2.4

Overall efficiency

≥91

%

Ambient temperature, 380VAC input/rated output

2.5

Output ripple and noise

≤3000

mVp-p

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

≤480

mVp-p

2.6

Main Road Dynamic Characteristics

Loading

Output increases from 0 to full load within 10μs

-

The output voltage shall not experience a transient drop or overshoot exceeding 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%, 70%, 90%

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

-

2.7

Main Power Source Adjustment Rate

≤±1

%

Auxiliary Road Source Adjustment Rate

≤±1

%

2.8

Main Line Load Adjustment Rate

≤±3

%

Auxiliary Road Load Adjustment Rate

≤±3

%

2.9

SW startup delay time

≤800

ms

After power-up, the SW signal transitions from high to low level until 10% of the output voltage has been established (no-load start).

2.10

Power-on delay

≤12

s

The SW signal is pulled low. From input power-up to 90% of the output voltage settling time (no-load start).

2.11

Output rise time

≤30

ms

Time for output voltage to rise from 10% to 90% (no-load start)

2.12

Shutdown delay

≤50

ms

After the power supply receives a control interface SW signal transitioning from low to high, it shall cease operation within 50 milliseconds.

2.13

Main path output capacitor discharge time

≤60

s

When the input voltage is disconnected, under no-load conditions, the voltage across the output storage capacitor shall decrease to below 36V within 60 seconds.

2.14

Capacitive load

1500

uF

Full voltage and full load range

2.15

Temperature coefficient

±0.02

%/℃

Rated output voltage and current, full operating temperature range