SPD is used to protect all kinds of electrical equipment in the
power system from lightning over-voltage, operation over-voltage,
power frequency transient over-voltage impact damage to an
electrical appliance
The electrical circuit or communication lines because of outside
interference peak current or voltage suddenly, the surge protector
can in a very short time conducting shunt, so as to avoid damage to
other equipment surge in the loop Installed front of inverter input
and back of inverter output Installed in Parallel the spd is
installed in the electric circuit with parallel, the first to play
a protective role, the response time in the 25 to 50 nanosecond
