Technical characteristics of SPDs that should be considered are as following: maximum continuous operating voltage, ac or dc application, nominal discharge current, voltage-protection level and temporary overvoltage. The SPDs have an integral self-protecting device and utilizing a finger-safe, removable module.
In the area that lighting occurrences are frequent, unprotected PV systems could suffer repeated and significant damage to key components. Aside from the consequences of direct lightning strikes to the arrays, interconnecting solar cables are very susceptible to electromagnetically induced transients. It results in substantial repair and replacement costs, system downtime and the loss of revenue. The strategic placement of Surge Protection Devices mitigate these issues because their function are shorting or clamping devices.
DC Surge protective device,protect against lightning surge voltages in solar system (photovoltaic power supply system)
Dc fuse is a very easy to use protection facilities, when the abnormal circuit is often accompanied by rising current, the rising current will not only damage some key equipment, but also burn the circuit, cause a fire and directly cause great economic losses.
There are three differences between a DC fuse and an AC fuse.
