Furse Total Solution to Earthing & Lightning Protection

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Protect electronic equipment
outside the building
Electronic equipment outside the main building in
ancillary buildings, on site or in the field should also
be protected.
Protect outdoor CCTV cameras with
protectors on the power supply, and
video cable (and, if relevant, telemetry
control line).
If the UPS is housed in a separate
building with a separate earth,
incoming and outgoing supplies will
need to be protected. This is because
most modern UPS systems contain
electronics that make them vulnerable
to being disabled by transient overvoltages. To prevent
transient overvoltage damage to the UPS it must have
a protector installed on both its input and output
(outgoing the building). A protector will also need to
be installed on the power supply into the main
building (2).
Protection is also installed on mains
power, data communication and
telephone lines entering the
neighbouring building. Additional
protection (not shown) may be
required within this building (whether
it’s a computer-controlled warehouse or automated
manufacturing operation with PLCs, drives and
computer controls).
Product selector
(1) Mains wire-in protectors p182-195
(2) Mains wire-in protectors p186-189,
192-193
(3) Mains wire-in protectors p182-195
(4) Mains wire-in protectors p182-195
(5) PBX telephone/ISDN line protection p236-237
(6) Plug-in telephone line protection, or p234-235
Wire-in telephone line protection p204-205,
210-211
(7) CCTV video protectors p256-257
(8) Computer network protector p238-239
(9) RF signal protector p258-261
(10) Mains wire-in protector p186-189,
192-193
(11) Plug-in mains protector p200-201
(12) Protectors for
low current mains power supplies, p198-199
CCTV video and p256-257
telemetry lines p204-209
(13) Mains wire-in protectors p182-195
(14) Mains wire-in protectors p182-195
Computer network protector p238-239
PBX telephone/ISDN line protection p236-237
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email: • Web:
Product selector Electronic systems protection
TSC-0912 - 09.10.12
Protect the power supply
locally to important equipment
Within the building transient overvoltages can be
injected on to the mains power supply (downstream
of the protector at the incomer). Consequently,
protectors should be installed close to important pieces
of equipment.
Protection is installed on the local
distribution board feeding the servers
and network hub. (Note how the top
floor PC network and RF receiver is
protected by the protector on the
distribution board (2)).
The telephone PBX is protected locally
by a plug-in protector.
Mains power
RF
Computer network
Telephone line(s)
Signal line
CCTV video
This illustration is designed to demonstrate the main aspects and
individual components of an electronic systems protection solution.
It is not intended to represent an actual scheme conforming to a
particular code of practice. The drawing is not to scale.
This illustration is designed to demonstrate the main aspects and
individual components of a system of Surge Protection Measures
(SPM). It is not intended to represent an actual scheme conforming
to a particular code of practice. The drawing is not to scale.