DC SPD
APPLICATION OF SPD
By diverting or limiting surge current, SPDs help to prevent immediate or cumulative damage to
electrical devices,
extending their lifespan and ensuring continued operation.
INSTALLATION
Installed at the junction of Lightning protection zone (herein referred as LPZ) like LPZ1 or LPZ2 zone and LPZ3 zone using 35mm standard guide rails, connecting copper stranded wires with 2.5~16 sq.mm cable.
Each pole of SPD must be protected with the use fuses or miniature circuit breakers or special backup protectors for voltage protection.
Places of application: Suitable for household distribution boxes, computer equipment, and information equipment. In front of or nearest socket box of electronic equipment and control equipment.
MAIN STRUCTURE AND WORKING PRINCIPLE
SPD has a built-in disconnector. When the SPD fails due to overheating or breakdown, the disconnector can automatically disconnect it from the power grid and give an indication signal at the same time.
The visible window displays green when the SPD is working normally, and displays red when it falls to disengage.
1P+N, 2P+N, 3P+N are composed of 1P, 2P, 3P SPD+NPE zero—ground protection modules, which are used in TT, TN-S and other power supply systems.