Dual power automatic switch

How to choose the dual power supply according to the actual situation?

First of all, to determine the dual power automatic switch is the choice of PC-level, or CB level.

Different practical occasions, choose different dual power supply.

Of course, the current market mainstream is: PC-class isolated dual power automatic switch.

If it is PC-level, need to determine whether the two-stage, or three-stage. Three-stage (with fire-fighting function).

The next is based on the rated current, to determine the dual-power shelf current and style.

N-type shell current is 125A, so it is suitable for all rated current of less than 125A dual power options.

T frame current is 400A, then it is suitable for all rated current 125A ---- 400A between the two power supply options.

M-type frame current is 1250A, so it is suitable for all rated current in the 630A ---- 1250A between the two power options.

Finally, according to the actual situation to determine the type of dual power controller.

WK1 controller function: Since the vote from the complex, with adjustable delay, manual / automatic switching function.

WK2 controller function: Since the vote from the complex, delay, start the engine function.

WK3 controller functions: issued with all the above functions, with the display current parameters, network communications.

Specific need for reference manual.

If you understand the above situation, dual power supply selection is very simple.