SPD’s protect electrical and electronic equipment against transients, originating from lightning, switching of transformers, lighting and motors
These transients can cause premature ageing of equipment, downtime, or complete destruction of electronic components and materials.
SPDs are strongly recommended on installations that are exposed to transients, to protect sensitive and expensive electrical equipment such as TV, video, washing machines, Hi-Fi, PC, alarm etc.
The choice of SPD depends on a number of criteria such as:
The risk of lightening strikes
The exposure of the building to transients
The sensitivity and value of the electrical equipment that requires protection
Level of protection
Our range of SPDs are separated into 3 types of protection: 1. Main protection - class 1
SPDs with higher discharge current (Imax 10/350), to evacuate as much of the transient overvoltages associated with lightening strikes.
2. Main protection - class 2
With a discharge current (Imax 8/20), to evacuate as much of the transient overvoltage to earth as possible protection level (Up ≤ 1000V).
3. Main protection - class 3
To cut-down the transient surge as low as possible to protect very sensitive equipment.
This guide expands upon some of the requirements found in the 17th Edition of the IET Wiring Regulations and other standards, related to the protection of electrical equipment from electrical surges. It considers protection against voltage transients on the electrical installation only. Consideration should also be given to the protection against transient overvoltages transmitted by data transmission systems. BS EN 50174 refers.
We now provide a CPD accredited training course on surge protection. It includes information to allow you to make an informed judgment as to whether or not to specify and install surge protection. Also provided is guidance as to which type of device to specify, where in the installation they should be installed and how to connect them.
We now provide a surge protection kit that can be fitted to any of our consumer units to meet Amendment 1 of the 17th Edition. The surge protection devices in the kit offer type 2 protection to the BS EN 61643 standard, to ensure conformity with the current edition of BS 7671. Amendment 1 of the 17th Edition requires electricians to conduct a risk assessment of properties to see if they require surge protection.
When you consider that many homes have a lot of sensitive electronic equipment, such as TVs, Hi-Fis, PCs and printers that would be adversely affected by a voltage surge, then the need for such devices increases.
Take a look at how to install the Hager Surge Protection Kit into a Hager Consumer Unit.