Lightning protection box

applied  to the structure of the shunt power distribution cabinet; D belongs to the third  level of  lightning protection  lightning.

Structure and Principle

Lightning protection box in parallel to the protected equipment front-end, under the condition of normal operating voltage,
power supply lightning protection box in a high impedance state, does not affect the normal work of the circuit. When there is
pulse surge line lightning strike, power lightning protection box in the nanosecond time conduction, quickly put the overvoltage
of diarrhea in the earth, when the pulse over-voltage  disappears, power lightning protection box and automatic recovery to a
high resistance state, does not affect the line power supply.