Lightning diverters are used to help divert lightning from the fence to earth. However, direct lightning strikes cannot save the system from damage.

The system is fully tamper-proof and one cannot vary the output voltage. The output is preset at safe levels to meet the requirements.

The system is fully tamper-proof and one cannot vary the output parameters. There are no external controls to vary either time of impulse or frequency.

The current that passes through the body during a short is for a very small duration of 3-Millionth of a second. The RMS current will be 1 A and the Peak current will be 4-6 Amps.

Ibex Gallagher Security Power Fence™ System can be designed for perimeter of any length.

Ibex Gallagher Security Power Fence™ Systems are unique and competition does not exist at the moment for an identical system.

Gates can be effectively monitored by the system. Multi-gates systems can be incorporated.

Perimeter systems have always been considered unreliable due to high incidence of false alarms. However, the Ibex Gallagher Security Power Fence™ System is unique in that it is totally unaffected by natural phenomena such as wind, rain, snow, sleet, fog, wild animals and birds which trigger false alarms in other detection systems.

The Ibex Gallagher Security Power Fence™ works normally in any weather condition even during heavy rains or snow fall periods. It is recommended that the fence height is carefully designed to allow for snow built-up under the fence and necessary shoveling is carried out periodically. It is also important to size the Solar PV Module and back-up battery to ensure that the battery is charged during low light conditions.

A 120 Ah battery is adequate for the system to operate for a minimum of 48 Hrs.

Since the Ibex Gallagher Security Power Fence™ System is installed outdoors; the components are designed and manufactured to the highest quality standards to withstand any weather conditions. The Power Fence™ is meant to last for several years and with minimal maintenance, the life of the fence can be extended beyond 10 years.

For extreme harsh conditions where acidic vapour clouds and salty conditions are prevailing, site-specific design is necessary that includes increasing of zinc coating thickness on steel components. Annual maintenance contracts are mandatory that will take care of selective replacement of parts wherever necessary.

The use of earth rings and the spring back action (due to the tension) of the wires upon cutting will trigger off the alarm.

It is rather difficult to climb on the insulators since anti-climbs are used to prevent intruders from scaling the posts. However, the intermediate insulators used are designed to break at a minimum load of 30 kgs. Any attempt to scale will break the insulator and short the fence resulting in an alarm condition and activate the sirens.

Unsuccessful attempts like this have been made at almost all the sites where the Power Fence™ has been installed. The fence configuration ensures that any kind of tampering of the Power Fence™ sets off alarms.

The only way to deactivate the fence is with the assistance of the security personnel that are in charge. All functions of the Control Unit are through digital Keypad with priority codes for deactivation. Cutting of the fence wires, tampering the Control Unit box or the fence wires set the alarms on with zone indication of probable intrusion.

Alarms will activate and the graphic display panel will indicate the zones tampered, cut or breached, while the zone that has not been shorted still remains active.

Since each zone has an independant power output, repeated or synchronized shorting will not affect the performance of the system.

Being backed by solar charger (optional), the fence can work without the aid of mains power. It is recommended to use a voltage stabilizer in case regulated supply is not ensured. The power consumption is 40 Watts per day per controller.

Barb wires and razor wires are not permitted to be used with any electric fence as per the international safety regulations as it endangers human life.

Electric fences must be towards the inside of the perimeter that is fenced. This is a statutory requirement as per standards. However, we can install a wall top Power Fence™ on the existing perimeter wall.

The Ibex Gallagher Power Fence™ energizers comply with safety standards worldwide.

An intruder can gain access but not without being noticed. The fence grid is installed such that any tampering with the fence wires or the fence itself sets off alarms with zone violation indications on the graphic display panel.

The Power Fence™ cannot detect objects thrown over or small objects through the fence wires. This can be made difficult by installing a smaller chain mesh fence behind the Power Fence™.

This depends upon factors like length of the fence, height of the wall, condition of the wall in terms of strength, number of corners, whether gates are to be monitored, whether the Power Fence™ is installed on a turnkey basis, new perimeter etc. If all conditions are favourable, the average time required to complete a 1 km fence is 4 - 6 weeks.

26. Will the Power Fence™ impulses affect other data transfer and data storage systems?

Data transfer and data storage systems are not affected by the Power Fence™ system. Good cabling and use of radio suppression circuitry does not affect the systems.

A properly installed Power Fence™ will not corrupt computer data.

The new generation Ibex Gallagher Security Power Fence™ System can be centrally monitored and can be operated only through a computer( including customized software) located in the control room.

Power Fence™ systems can generate sparks, which in the presence of an ignitable environment can cause fire. However, since it is a perimeter protection system installed along the outside boundary, chances of fire hazards are not there. With thorough site study and planning, Power Fence™ can be installed even in chemical factories

30. Can a wall top fence detect if someone is making a hole in the wall?

Wall top Power Fence™ are classified as C Class security fences. They do not offer the level of security an 'A' or 'B' Class full fence's provide. Holes can easily be made in the wall and this cannot be detected.

Generally, perimeters are divided into a number of zones. The new generation Ibex Gallagher Trophy™ controller is capable of monitoring 48 zones of 250m lengths for full fences and upto 500m of zone lengths in case of wall top fences. The display panel/computer located in the main control room will indicate the exact zone/zones of intrusion. However, with the integration of CCTV surveillance cameras, the point of intrusion can be seen and recorded.

The use of concrete pavements will eliminate the possibility. However this depends on the level of security desired and the terrain of the site.

International Special Committee on Radio Interference that is sponsored by the International Electrotechnical Commission (IEC) and issues the CISPRO publication. The CISPR Pub 14 (1875) specifies Limits and methods of measurement of radio interference characteristics of household electrical appliances, portable tools and similar electrical apparatus. Electric Fence Energizers are classified under IS302-2-76 - Safety of household and similar electrical appliances and come under this publication.

Limits for electrical fences are applicable only up to 30 MHz (6.2.5.5 of IS: 6842-1977). Ibex Gallagher manufactured controllers conform to CISPR Specifications.

The new generation Trophy™ Fence controllers can be field mounted in weatherproof kiosks at various locations along the fence. Each Fence controller will energize and monitor three separate zones and activate a local alarm if one of the three zones is breached also when the perimeter is breached, the field fence controllers communicate to a Central Monitoring and Control Station enabling the QRT to reach within seconds.

The multiple controllers along the fence line are linked together to a central station via fiber optic cables and the PC Interface connects to the network controller for site and alarm management.

Each fence wire is kept taught by use of wire tightners. The tension on each wire is 30 - 70 kg. Any attempt to cut the high tensile fence wire will cause a spring back and entangle with other wire causing appropriate alarms to be set off. The maximum distance between any two wires of the Power Fence™ is maintained at only 4 inches.

A well-designed site for safety will normally take care of the boundary limits of the perimeter in question. Perimeter wall or fence is always constructed as per the relevant act keeping the safe distances recommended to avoiding danger of even public throwing dangerous articles into the perimeter area like for example lighted cigarette, lighted match stick, bombs etc. Double barriers are also installed to make the site safe. Ibex Gallagher Security Power Fence™ is installed on this boundary within the safe limits of the site in question.

38. What are the safe values of current that can be passed through the human body?

This is relative, as the most important factor is the time through which the current passes through the body. The pulse duration in Ibex Gallagher energizers is only 0.3 Millie-seconds and therefore is very safe.

Note: These answers are based on our experience and the minimum code of practice in design, manufacture and installation (which exceeds the requirements of International Electrotechnical Committee for safety requirements of electric security fences) of Ibex Gallagher Security Power Fence™ Systems. This cannot be generalized for all kinds of electric fences.