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PowerSafe – Commercial & Industrial
57
The Havells/Furse
®
solution effectively removes all the
product selection and installation variables of BS 7671 for
transient overvoltage protection on AC power supplies.
Installation is hassle-free as all components and instructions
are provided in the SPD kit, enabling contractors to progress
quickly throughout the site without worrying about the
effectiveness of the installed protection, saving both time
and cost.
The Furse
®
ESP mains power SPD is an enhanced SPD to
BS EN 62305, designed to protect both the susceptibility
and withstand voltage of electrical equipment.
Once installed, it will provide reliable, long lasting transient
overvoltage protection of the AC power supply, with the
ability to withstand repeated transients and give clear pre
end-of-life warning, allowing plenty of time for replacement,
so as to ensure users are not left unprotected.
Installation location TN-S or
TN-C-S supplies
Service entrance, after meter
(main distribution board)
Sub-distribution board
located > 10m from main
distribution board
Critical terminal equipment
located > 10m from
sub-distribution board
No structural LPS fitted,
underground mains
supply feed
1
Install:
MCCB board + SPD kit
PSPB415M1
or
Type ‘B’ TPN board + SPD kit
PSB415M1E
Install:
Type ‘B’ TPN board + SPD kit
PSB415M1E
or
Type ‘A’ SPN board + SPD kit
PSA240M1E
Install:
Local SPD connected to
equipment, such as the
Furse ESP MC range
Structural LPS fitted, multiple
connected metallic services
known (gas, water, data,
telecoms)
2
1.
For installations where no structural LPS is installed and there is an exposed overhead mains supply, contact Havells.
2.
For installations where a structural LPS is installed and connected metallic services (gas, water, data, telecoms) are
unknown, contact Havells.
Installation of Furse ESP mains
power SPDs only reduces risk of
transient overvoltages entering
the structure on mains power lines
where the protectors are installed.
Transient overvoltages may enter the
structure via any metallic services
connected to it. For full protection,
installation of SPDs to protect all
incoming and outgoing services
(mains/data) needs to be assessed.
Furthermore, it should not be
considered that installation of Furse
ESP mains power SPDs alone
constitutes a Lightning Protection
System for a structure.
Lightning protection for structures
must be risk assessed in
accordance with BS EN 62305
in order to ensure all appropriate
protection measures are taken
(external and internal lightning
protection system/LEMP protection).
For further reference see British
Standard BS EN 62305, or the Furse
Guide to BS EN 62305 (available at
www.furse.com).
Furse is a brand owned by
Thomas & Betts Corporation.
Selecting the correct Furse
®
SPD
Selection of the appropriate Havells Distribution Board with Furse
®
ESP mains power SPD
depends on the installation point, in accordance with the chart below:
IMPORTANT NOTE
: