Basic HTML Version
9/21
How to implement a surge
arrester system?
Lightning
protection
Dimensions
Section 10
Selecting a surge arrester
Surge arrester selection is performed in three stages:
Estimate the value of the equipment to be protected
b
b
Determine the type of building
b
b
Assess the risk of lightning impact according to the site
b
b
Choice of technology
To maintain the system's continuity of service, a surge arrester must be installed
downstream of a disconnection device.
A circuit breaker, thoroughly appropriate for this type of function, well coordinated
with the surge arrester, is the ideal solution.
There are two technologies to provide this coordination:
Surge arresters with integral disconnector (ready to wire) which incorporate their
b
b
own disconnection circuit breaker: Combi PRF1, Quick PF, Quick PRD
Modular surge arresters: the disconnector to be added on has been coordinated
b
b
with the surge arrester to ensure complete safety in the surge arrester's
end-of-life stage: PRF1, PF, PRD
The choice of ease of installation
The solution of a surge arrester and disconnector combined in a single product
(Combi PRF1, Quick PF, Quick PRD) ensures optimum performance.
In this case the regulatory constraints and obligations for installation between
disconnector and surge arrester are allowed for in the product.
Only the power supply and earth connections have to be performed.
Simplified maintenance
To facilitate maintenance:
Rapid pinpointing of the operation to be performed: through indication of its
b
b
state by indicator lamp
Remote indication of surge arrester state by choosing a surge arrester provided
b
b
with "remote reporting"
A range of surge arresters with withdrawable cartridges to simplify maintenance
b
b
Lightning protection devices prevent damage to
equipment and ensure the system's continuity of
service.
PRF1 Master
Quick PRD
Quick PRD withdrawable cartridge
Withdrawable cartridge
Indicator lamp
Remote indication