100kw intelligent rectifier battery charger for backup battery system

100kw intelligent rectifier battery charger for backup battery system

Model No.︰SD750250G

Brand Name︰SANDI

Country of Origin︰China

Unit Price︰US $ 15800 / pc

Minimum Order︰1 pc

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Product Description

100kw intelligent rectifier battery charger for backup battery system


Product Introduction

   SAND AC/DC Charger is specially developed for DC chargers module. It has high efficiency, high power factor, high power density, high reliability advantage. AC input 3 phase or single phase, DC output voltage range from 50 to 750VDC can be set, compliant with CE safety requirements, EMC standard EN61000-6-3 and EN61000-6-1 Class A, it is an advanced international level charger module.

Unique function

  • High efficiency over the full load range, full load efficiency greater than 95.5%
  • Wide output voltage range, 50-750VDC, suitable for a wide range of Lithium and lead acid battery 
  • 5-inch LCD touch screen, easy to operate
  • Flexible application, charging voltage, charging current, charging time, timing charging can be set by LCD screen, easy to operate

Main features

  • Powerful protection, overheating, short circuit, overload, overvoltage, undervoltage, etc.
  • Three phase active power factor correction technology, reduces the harmonic interference to the grid
  • Dual DSP design, achieve the full digital control, less components means high reliability 
  • Wide input voltage range, allows operation in most poor grid conditions
  • Soft start charging and soft shutdown minimize the impact on the battery.
  • Input, output have protective circuit breaker switch
  • Module adopts hot pluggable design, which is convenient for maintenance.
  • CAN/RS485 interface


Product Parameters (SD750250G)



AC input

Input system

Three phases + PE

Voltage range

340Vac ~450Vac

Rated voltage


Frequency range


Maximum current


ITHD (total harmonic distortion)


DC output

Voltage range

100-750Vdc ( can set)

MAX. Output current (A)


Current range

1 ~ 250A (can set)

Steady voltage precision


Steady current precision

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

Load regulation rate


Startup overshoot


Peak-to-peak value noise

1% (200~1000V, 0~20MHz)


Indication Light

Green LED: normal operation,

Yellow LED: alarm, Red LED: failure

Display language



5’ LCD touch screen

Power factor and THD

Power factor

≥0.90  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%


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

Protection function

input overvoltage Protection

Over Under Voltage automatic shutdown and restart when voltage return normal

Output overvoltage protection

Over Under Voltage automatic shutdown and restart when voltage return normal

Over-temperature protection

Automatic shutdown. Automatic restart when the temperature return to normal

Short circuit protection

Automatic shutdown and lock, need power off to restart to unlock


Under Rated input voltage


Application place

Indoor (IP20)

Environmental conditions

Operation temperature

-20°C ~ +75°C, derating from 55°C

Storage temperature

-40°C ~ +70°C

Relative humidity

≤95%RH, without condensation

Cooling mode

Forced fan cooling


≤60dB (1maway)





Insulation resistance

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

Price Terms︰ FOB Ningbo

Payment Terms︰ TT

Lead Time︰ 7-10 days

Standards Certificate︰ CE, ISO9001

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