Yueqing Sandi Electric Co.,Ltd is one of the leading China ac-dc battery charger manufacturers, welcome to wholesale cheap ac-dc battery charger from our professional factory.
rated output current(A)
heat sink temperature rise
rang of input AC（VAC）
rang of the output voltage（VDC）
stable voltage accuracy:
stable current accuracy:
And machine uneven fluidity
time delay of start-up（s）
100% rated output current
stepless current limiting technology
The output current cannot increase infinitely. The maximum value of the output current of each module is limited to the rated output current
Output overvoltage protection function
After output overvoltage occurs(160±3VDC), the module locks up automatically
output short circuit protection
When output short circuit, the module draws the output voltage to 0 immediately
Note：The constant voltage precision does not contain the built-in isolating diode's influence。
AC-DC battery charger
AC-DC battery charger are designed with world leading patent technology “resonant voltage type soft switching power supply technology”. They feature high efficiency and stability, intelligent control, small size and light weight.
A variety of current output optional, 5A 7A 10A 20A 30A 40A 30A 40A are big power rectifier especially designed for the power plant, substation and hydropower station.
Main characteristic of the Modules
Modular design, N+1 pc(s) backup;
The friendly man-machine interface. LED digital screen, digital calibrate, stable current ,fault alarm
High efficiency, up to 95%-96%;
Light weight, Small size
After the full bridge rectifying circuit rectifies 3-phase AC to DC, then adjusted by reactive PFC, power factor>0.94;
Unequal current ratio of parallel connection＜+/-3%, can ensure twenty modules work well by
Function against reverse connection
Output overvoltage protection
To prevent the disastrous accident caused by output overvoltage, there is overvoltage protection circuit in the module. Once the output voltage is higher than the threshold, the module locks up automatically and fault indication light is on, the faulty module quits work automatically and doesn’t affect the normal operation of the entire system.
Output current limiting protect
The output current cannot increase infinitely. The maximum output current of is limited to 105% of the rated output current.
Output short-circuit protection
When short circuit, the output voltage drops to 0 immediately. Limit the short circuit current under 15% of rated output current. The module will not be damaged under short circuit state for a time, and resumes to work automatically after debugging.
Module parallel protection
There is parallel protection circuit in each module to ensure that when the fault module quits the system, the normal work of other modules and the system won’t be effect.
Output over-current protection
The output current cannot increase infinitely. If overloaded, the output voltage decreases automatically to protect the power components. The over current protection can be resumed automatically.