How to choose the best suitable SPD Model ?
If the building has sub-distribution boards more than 10 metres away from the incoming panel, these boards will require additional protection. Usually a Type 2 surge arrester is sufficient here unless you are feeding outside final circuits, when a combined Type 1+2+3 surge arrester will have to be fitted.
Switching element
Mainly used in common mode protection, but also often used for differential mode protection in passive circuits.
Pressure limiting element
Mainly used in differential mode protection, it is also commonly used in common mode circuits in series with switching elements to prevent short circuit between the line and ground after the switching elements are turned on; or as a current limiting element of the switching element to block freewheeling and reset the switching element .
Shell material:
Using international brand nylon material and international brand PBT material, the bending strength is in accordance with GB/T9341-2008, and the impact strength of the simply supported beam is notched and unnotched. Comply with GB/T1043.1-2008, flame retardancy complies with GB/T2408-2008, excellent electrical insulation performance, and strong consistency of product surface technology.
Stamping:
It is made of high-precision copper, and the screws and locking sleeves are electroplated after heat treatment. The advantage is that the product is not easy to slip, the salt spray test can reach 72 hours, and the plugging force is moderate.
Elaboration
1. It is recommended that the maximum flow of SPD Imax: 10-60KA.
2. It is recommended that SPD be used in an environment of -40℃ to +100℃.
3. 1P, 2P, 3P, 4P can be distributed according to demand to meet various needs.
4.35mm guide rail design is convenient for subsequent installation.
A full set of lightning protection device accessories, welcome to customize