Environmental conditions

Operation temperature

-40°C ~ +75°C, derating is require when the temperature is above 55°C.

Storage temperature

-40°C ~ +70°C

Relative humidity

≤95%RH, without condensation

Cooling mode

Forced air cooling

Altitude

2,000 m a.s.l., derating is require when the altitude is above 2,000 m a.s.l.

Atmospheric pressure

79 kPa ~ 106 kPa

AC input

Input system

Three phases + PE

Rated voltage

480 Vac

Rated frequency

50Hz/60Hz

DC output

Rated voltage

396Vdc

Rated current

220A

Float charging voltage

376V

Average charging voltage

515V

Steady voltage precision

<±0.5%

Steady current precision

≤±1% (rated range of 20% ~ 100% for output load)

Load regulation rate

≤±0.5%

Grid regulation rate

≤±0.1% (testing range is 320V ~ 530V)

Startup overshoot

≤±3%

Peak-to-peak value noise

≤1% (150~750V, 0~20MHz)

Power factor and THD

Power factor

≥0.95   Full-load output power of @20%~50%

≥0.98   Full-load output power of @50%~100%

≥0.99  Full-load output power, input nominal voltage and frequency of @100%

THD

≤5%  Full-load output power of  @50%~100%

Efficiency

Under Rated input voltage

≥95.2％，@750V，50％～100％

EMC

Emission

ClassA , Meet the requiremnt of  NB/T 33001-1-2010,NB/T 33008-1-2013  

Immunity

C lassA , Meet the requiremnt of  NB/T 33001-1-2010,NB/T 33008-1-2013  

Current sharing

In case of load of 10%~100%, the module current sharing error ≤ rated output current of ±5%.

Noise

≤65dB(1m away，

Startup duration (select the startup mode through the monitoring module)

Normal startup mode: the time delay from AC power-on to module output is ≤ 8s.

Output delayed startup: The startup duration can be set through the monitoring module, with default output startup duration of 3~8s.

Earthing resistance

Earthing resistance ≤ 0.1Ω, bearable current ≥ 25A

Surge protection

Meets IEEE C62 41-1991 Class B3 rating, 6kV/3kA (1.2/50μs impulse voltage and 8/20μs inrush current mixed wave)

Insulation  resistance

The insulation resistance of DC part and AC part to housing and the AC part to the DC part shall be ≥ 10MΩ.

Insulation strength

AC input terminal to the housing 3535V DC voltage 20S clock, no breakdown, no arcing phenomenon, steady state leakage current is less than 1mA;

AC input terminal to DC output terminal 3535V DC voltage 20S clock, no breakdown, no arcing phenomenon, steady-state leakage current is less than

1mA;

DC output terminal to the housing 3535V DC voltage 20S clock, no breakdown, no arcing phenomenon, steady state leakage current is less than 1mA;