DEHN protects cell sites
DEHN protects cell sites

Lightning and surge protection for cell sites

Ensuring network availability and reliability

Reliable protection against lightning and surge damage is an important aspect when redesigning and extending the existing network infrastructure.

Transmission capacities and network availability are the most important factors. To meet the ever growing demand, existing structures must be constantly extended. New transmission technologies require constant adaptation of the hardware. Since technology is becoming ever more powerful it gets more and more sensitive.

 

Don't run the risk of a standstill - Rely on a comprehensive protection system

Top priority is to prevent lightning damage to the host building, mobile radio infrastructure and electrical systems. Permanent system availability is always paramount.

According to IEC 62305 the standard-compliant protection system for all components of the transmitting system consists of

  • External lightning protection including air-termination systems, down conductors and the earth-termination system
  • Internal lightning protection including surge protection for lightning equipotential bonding

    Remote Radio Unit Technologies - d.c. power supply

    New technologies require special protection

    Modern mobile radio technologies include remote radio technology where the HF amplifiers are installed in a separate housing next to the antennas.

     

    Risk of injection

    If supply lines are installed in parallel to the mast, there is the risk that surges are injected into these lines. The same applies to the antenna lines. To reduce injection of surges to an acceptable level, the supply line leaving the base station and the supply line at the amplifier near the antenna are protected by installing adequate lightning current and surge arresters.

    DEHNsecure modular particularly for 48 V d.c.

    Protect your system with DEHNsecure. This modular arrester is specifically designed and tested for the high operating currents of the 48 V d.c. supply.

    The vibration-resistant module locking system ensures that the protection module is firmly secured to the base part. It withstands shock, vibration and the enormous mechanical load of discharge occurrences.

    Good to know: The protection module is replaced without tools by simply pressing the module release button, meaning that it can be safely replaced during operation without interrupting the power supply.

    Online catalogue

    Radio base station - a.c. power supply

    Protection of the radio base station

    The radio base station is typically supplied by a separate line – irrespective of the rest of the building. The supply line to the cell site downstream of the meter and in the a.c. sub-distribution board upstream of the radio base station should be protected by adequate lightning current and surge arresters. This is required by the guidelines of all network operators, the German “ABB bulletin No. 16” as well as DIN VDE 0800-300 or IEC 62305.

    New space-saving design!

    Total performance packed into just 4 standard DIN modules! DEHNvap with its new compact design has a total current of 100kA (10/350µs) making it the smallest combined arrester with these performance parameters currently available on the market.

    DEHNvap

    This device fulfils the maximum requirements on lightning current discharge capacity according to IEC EN 60364-5-53 and the requirements of IEC EN 62305 with regard to class of LPS I/II. Simple realisation of feed-through wiring is possible by connecting in series, e.g. with STAK 25.

    Preventing false tripping of system fuses

    The infrastructure in main and system power supplies is protected by proven combined arresters (combined lightning current and surge arresters). DEHN combined arresters are characterised by an extremely high follow current extinguishing and limitation capability, thus preventing false tripping of system fuses which would disconnect the cell sites. This leads to an extremely high system availability.

    Universal usage – irrespective of the power system

    DEHNvap CSP was specifically designed for the requirements in the mobile radio sector. This arrester can be used universally irrespective of the power system. Thanks to its integrated 3+1 circuit, it reliably protects TN-S and TT systems.

    Contact

    Have you got questions? Contact us.

    Technical Support | Cell sites

    Phone: +49 9181 906 1045

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