MILITARY FACILITIES: USE AND SELECTION OF AG SURGE ARRESTERS

Military Facilities Low Voltage Surge Arrester (AG Parafudr) Usage and Selection, Military areas are constantly exposed to lightning and sudden overvoltage events; military facilities, generally located in rural and mountainous terrain, are frequently damaged by possible lightning strikes; In military facilities where the risks of loss of life, fire, and equipment damage are at maximum levels, especially electronic security systems, camera systems; radar systems suffer serious damage as a result of lightning. Every military facility has a lightning rod system, however no facility has a fully established Low Voltage Surge Arrester (AG Parafudr) system; The use of AG Parafudr in military facilities is mandatory and products tested according to IEC 61643-11 Standard must be designed in accordance with the Lightning Protection Regulation; Internal Installation Regulation and IEC 62305 standard according to the principle of coordinated protection.

In military areas, main incoming panels; transformers; generators and UPS systems must be protected to withstand the strongest lightning strike; Raycap Type 1+2+3 or Type 1+2 AG Parafudr products should be installed in these incoming panels; If the facility receives frequent and continuous lightning strikes, the Raycap Strikesorb system should be installed at the main entries. In facilities where lightning strikes occur with average frequency and intensity, choosing products with an Iimp value of 100kA is appropriate; In facilities exposed to very frequent strikes, protection of 200kA and above can be provided with Strikesorb and Rayvoss type surge arresters. The selected surge arresters must absolutely not be only varistor-based; if possible, in order to ensure long service life, they should be mov+gdt technology with safetec technology. After the main entries, for building distribution panels, the use of Raycap PROTEC C Type 2 40kA protected products is suitable.

Security and weak current systems must also be protected with appropriate AG Parafudr products; Especially at switch inputs, Type 1+2 1p+n 100kA protected products should be preferred; For POE data lines, RAYDAT NET6 POE line protection should be used bidirectionally; It should not be forgotten that surges may also come from telecom lines, and Type 3 Telecom krone protection Raycap MGZ 10 series is the most accurate choice for this point.

Installation is as important as the selection of AG Parafudr; After selecting the correct product, energy protection devices should be mounted in parallel inside the panel at the closest point to the grounding line; The length of the cables entering the surge arrester must not exceed 50 cm. If a product has Type 1 protection, it should be installed with a 16mm2 cable; if it has Type 2 protection, it should be installed with a 6mm2 cross-section cable;

When lightning strikes the lightning rods in military facilities, this surge can affect the entire electrical system of the facility; if the external lightning protection system and the main facility grounding systems are not at equipotential, more serious consequences may occur due to resistance differences. Therefore, the facility must be at equipotential and AG surge arresters must be used in every panel;

If there are fire alarm panels; radar systems; RS232 communication lines; weighing systems; radio systems in the facilities, suitable surge arresters for these are also available in the Raycap product group;

In facilities, taking additional measures with spark gap suppressors on natural gas pipelines; ammunition depot metal parts and equipotential connections eliminates risks;

The use of AG Parafudr in military facilities is mandatory within the scope of Internal Installation Regulation Article 43, not using it is risky and may cause serious damage. Therefore, the facility should be protected step by step with the correct products;

As Yıldırımdan Korunma Merkezi, we can provide AG surge arrester surveys; product recommendations; design and product supply for military facilities; With 2400 different solutions included in the product range of our partner German brands Raycap and Iskra Zascite, military facilities can remain in a safe area against lightning;

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