stafix Cyclic Wave B6 Mode D'emploi page 13

Connecting leads that are run inside buildings shall be
effectively insulated from the earthed structural parts
of the building. This may be achieved by using
insulated high voltage cable.
Connecting leads that are run underground shall be
run in conduit of insulating material or else insulated
high voltage cable shall be used. Care must be taken
to avoid damage to the connecting leads due to the
effects of vehicle wheels sinking into the ground.
Connecting leads shall not be installed in the same
conduit as the mains supply wiring, communication
cables or data cables.
Connecting leads and electric security fence wires
shall not cross above overhead power or
communication lines.
Crossings with overhead power lines shall be avoided
wherever possible. If such a crossing cannot be
avoided it shall be made underneath the power line
and as nearly as possible at right angles to it.
If connecting leads and electric security fence wires
are installed near an overhead power line, the
clearances shall not be less than those shown in the
table on page 9.
If connecting leads and electric security fence wires
are installed near an overhead power line, their height
above the ground shall not exceed 3 m (10'). This
height applies to either side of the orthogonal
projection of the outermost conductors of the power
line on the ground surface, for a distance of:
2 m (6'6") for power lines operating at a nominal
•
voltage not exceeding 1000 V.
15 m (50') for power lines operating at a
•
nominal voltage exceeding 1000 V.
A spacing of 2.5 m (9') shall be maintained between
uninsulated electric security fence conductors or
uninsulated connecting leads supplied from separate
energisers. This spacing may be less where conductors
or connecting leads are covered by insulating sleeving,
or consist of insulated cables rated to at least 10 kV.
This requirement need not apply where the separately
energized conductors are separated by a physical
barrier that does not have any openings greater than
50 mm (2").
A vertical separation of not less than 2 m (6'6") shall
be maintained between pulsed conductors fed from
separate energisers.
Electric security fences shall be identified by
prominently placed warning signs.
The warning signs shall be legible from the secure
area and the public access area.
Each side of the electric security fence shall have at
least one warning sign.
Warning signs shall be placed:
at each gate
•
at each access point
•
at intervals not exceeding 10 m (33')
•
adjacent to each sign relating to chemical
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hazards for the information of the emergency
services
Any part of an electric security fence that is installed
along a public road or pathway shall be identified at
frequent intervals by warning signs securely fastened
to the fence posts or firmly clamped to the fence
wires.
The size of the warning sign shall be at least
•
100×200 mm (4x8").
The background colour of both sides of the
•
warning sign shall be yellow. The inscription on
the sign shall be black and shall be either:
or the substance of "CAUTION: Electric security
fence".
The inscription shall be indelible, inscribed on
•
both sides of the warning sign and have a height
of at least 25 mm (1").
Ensure that all mains operated, ancillary equipment
connected to the electric security fence circuit
provides a degree of isolation between the fence
circuit and the supply mains equivalent to that
provided by the energiser.
Mains supply wiring shall not be installed in the same
conduit as signalling leads associated with the electric
security fence installation.
Protection from the weather shall be provided for the
ancillary equipment unless this equipment is certified
by the manufacturer as being suitable for use
outdoors, and is of a type with a minimum degree of
protection IPX4.
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