Flexible
settings depending on the threat
Wire deflection on the Guard Tower matrix wire array
electric fencing creates an alarm condition. Adjustable
detection sensitivity allows any combination of alarm,
low voltage or NLEF modes, depending on threat level
or time of day. Plus, mode settings of the zones
can vary vertically (high and low wire arrays) or
horizontally (different sections of perimeter).
Alarm Only Mode
- detects wire deflection in any direction
- detects cut wire
- creates alarm only – no voltage on wire
array
Low Voltage Mode (12 volt DC)
- detects wire deflection in any direction
- detects wire that is cut, grounded, or touching
an adjacent wire
- creates alarm
NLEF Mode (high voltage – 5,000 volts)
- detects wire deflection in any direction
- detects wire that is cut, grounded, or touching
an adjacent wire
- detects a “grounded” intruder/escapee
touching the wire while standing or touching two
adjacent wires simultaneously
- creates alarm and non-lethal shock of 5,000 volts
that pulse in 1-second intervals
Note: the wire array can be set as alarm only
mode on lower zone(s) and NLEF mode on top wires
How It Works
Each of Guard Tower’s electronic identification
circuit boards is a smart sensing device that sends
a signal indicating where a breach in the electric
fence has occurred.
The Guard Tower’s reliable smart sensing
device detects wire movement in any direction,
including in or out, side to side, or wire spread
caused by climbing the electric fence. It also detects
cut wire or a severed communication link. The electric
fence sensitivity can be adjusted up or down as needed.
The Guard Tower’s flexible mounting configuration
allows it to be installed as a standalone barrier
or mounted to existing fences, including wood,
chain link, or wrought iron.
Frequently Asked Questions regarding these
Electric Fencing Systems
Question: Is the electric
fence system safe?
Answer: Yes, the energiser
components system design, and installation, comply with product standards (BS
EN61011) and our own code of practice that exceeds installation codes of practice
which currently exist in the UK and around the world.
Question: What is BS EN
60335-2-76:1999?
Answer: BS
EN 60335-2-76:1999 is the European Standard for Electric
Fence energisers and their safe application. This
standard has been adopted by most European Countries. In
1993 the British standards adopted EN 61011 in its
entirety as the British standards BS EN 60335-2-76:1999.
Question: What are the basic
requirements of BS EN 60335-2-76:1999 and PAS 47
PART ( BS 1722 pending )
Answer: The
maximum energy that can be produced by the security
system energiser, is limited by design to a maximum
of five joules into a load of 500 ohms ( typical
resistance of human body ).
The
energiser is designed and required to comply with this output, even under abnormal
operating conditions such as component failure. The overall system is
specified with due consideration given to the duty of care associated with
such systems. This includes clearances, numbers of wires, the use of
warning signs, etc. The energiser is designed to be fail safe. The
system is constructed with due consideration for duty of care. Warning
signs are applied at appropriate intervals.
Question: Are SIMTEC energisers
as used with the Electric Fencing Systems tested
compliant with BS EN 60335-2-76:1999?
Answer: Yes.
Question: What happens
if a child or elderly person comes into contact with
the electric fencing?
Answer: In
accordance with the Code of Practice and minimum
Quality Standards, all systems are designed and installed
to minimise the risk of accidental contact, with
all ages and infirmity considered
The impulses are regulated safe for the entire population,
in accordance with BS EN 60335-2-76:1999.
Question: What are SIMTEC’s
Code of Practice and Minimum Quality Standards?
Answer: As
responsible manufacturers and distributors of Pulsed
Fence Systems we have a policy of only making the
systems available from trained Dealers.
All Dealers have an agreement in which they commit
only to design, install and maintain Pulsed Fenced
Systems in accordance with SIMTEC’s Code of
Practice and Minimum Quality Standards.
The standards meet and exceed the requirements of
all National and International standards regarding
safety and the application of electric fence systems.
Question: How do SIMTEC
ensure that their Code of Practice and Minimum Quality
Standards are complied with?
Answer: Installations
are inspected at regular intervals by SIMTEC.
Question: Is the system
legal?
Answer: Yes,
the system is legal because the system design, components
and installation comply with the requirements of
BS EN 60335-2-76:1999.
In addition, the system is only available from trained
dealers, who exercise ‘Duty of Care’,
when considering the design, installation and maintenance
of Pulsed Fence systems in accordance with SIMTEC’s
Code of Practice and Minimum Quality Standards.
Question: What maintenance
is required?
Answer: We
recommend two routine maintenance inspections per
year to ensure optimum system performance and reliability
with a minimum of one visit per year.
Question: Is the system
prone to false alarms due to changes in the weather,
heavy rain, fog, snow, high winds, falling leaves,
wet paper bags, wild animals, etc.?
Answer: No,
unlike other perimeter systems Pulsed Fence technology
and signal processing ignores these forms of interference.
Question: Why does the system
not generate an alarm if an animal or human touches
the pulsed wires?
Answer: Anyone
who touches the system, when it is armed, is repelled
by a short, sharp, painful but regulated safe electric
shock.
Only if someone attacks, tries to climb through or
tampers with the system, are alarms generated.
Question: What about false
alarms?
Answer: False
alarms are virtually unheard of because of the system
quality and proven design. Unique patented
electronics and system components. Designed,
installed and maintained by trained Dealers. SIMTEC’s
Code of Practice, Minimum Quality Standards and system
inspection.
Question: What happens if
the mains fail?
Answer: All
our systems have standby power supplies. In
the event of mains failure rechargeable batteries
power the system for a minimum of 4 hours. If
a longer period is required the size of the standby
power supplies can be increased.
Question: What are the running
costs of a typical Pulsed Fence system?
Answer: A
standard I.P. system consumes less than 40 watts
fully armed. This is comparable with a small
light bulb.
Question: Is the system
compatible with other security systems and equipment?
Answer: Yes,
in its standard form it can be installed as a stand-alone
system or directly interfaced with any other type
of intruder alarm, access control or integrated security
system. This is for all functions including
arming, disarming, alarm monitoring and signalling.
Question: Can gates be protected?
Answer: Yes,
all forms of security opening, sliding and power
gates can be fully protected with the SIMTEC system.
Question: Is it possible
for the system to be on and monitor the perimeter
security without the high voltage feature?
Answer: Yes,
SIMTEC have a fully monitored HV/LV system for the
protection of storage yards, car parks and sites
such as garden centres and factories, where authorised
people can be exposed to the system without the risk
of the high voltage feature. During the daytime
the system is fully monitored using a unique LV system. When
the premises are vacated the system can be armed
with the additional feature of the high voltage deterrent.
Question: Is the system
zoned for alarm management and response?
Answer: Yes,
the standard European Pulsed system has a minimum
of 6 zones for alarm management and monitoring purposes. These
zones can be configured to meet with the exact site
requirements, i.e. programmable delayed zones for
exit entry routes, gates, etc. and instant zones
for standard perimeter protection. The system
may be expanded to multiple zones and PC interfaced.
Question: What is a maximum
electrical zone length?
Answer: On
a standard fence system, each zone may be up to 300
metres long. Therefore, a standard 6 zone control
may be used for the protection of perimeter fencing
from zero to 1.5 kilometres in length.
Question: Can the system
be used in conjunction with CCTV, security lighting
and other alarm monitoring or annunciation?
Answer: Yes,
the zone alarm outputs can be used to trigger or
operate all forms of alarm monitoring, annunciation
or signalling systems.
Question: What is the authorities
attitude to electric security fences?
Answer: SIMTEC
directors have held discussions with the Home Office
and Crime Prevention Officers throughout the various
regions. Many electric fence installations
are as a direct result of police referral and Government
request!
Question: Do insurers accept
or specify the fence system?
Answer: Yes,
most major insurance companies accept the installation
of I.P. systems and some are now specifying the same
for the protection of appropriate sites.
As a direct result of I.P. fences stopping crime
and losses on various sites, some site owners have
been able to obtain insurance on previously uninsurable
or uneconomic risks.
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