Surge Arresters | Lightning Protection for Airfield Lighting Circuits
Surge Arresters | 2DCAFL4
Lightning Protection for Airfield Lighting Circuits
The 2DCAFL4 is designed to provide lightning protection for constant current circuits that supply power to airfield lighting systems, safeguarding them from both direct and indirect lightning strikes. Its terminal design ensures easy retrofitting into existing circuits. The device features two metal oxide surge arresters connected in parallel with the supply cables, offering protection.
The terminals are engineered to allow existing cables to be conveniently cut and connected to the device without the need for splicing or using a spur. For optimal performance, the 2DCAFL4 should be installed close to the control equipment in an area with a reliable earth connection.
Surge Arrester Characteristics to BS EN 60099-4
| Rated voltage, A.C. Ur | 4.4kV~ |
| Nominal operating voltage, A.C. Un | 4.0kV~ |
| Maximum operating voltage, D.C. Uc | 5.2kV |
| Nominal discharge current (8/20μs) In | 5kA |
| High current duty (4/10μs) | 65kA |
| Long duration withstand (2000μs rectangular wave) | 250A |
Lightning Protection for Airfield Lighting Circuits
Physical/Environmental Characteristics
| Operating temperature | -40 to +40°C |
| Cable diameter accepted by glands | 11.0 to 13.5mm |
| Conductor diameter accepted by terminals | 5.5mm Max |
| Ingress Protection | IP65 |
| Earth Stud Size | M12 |
AN Wallis & PD Devices LTD
Overvoltage Protection for Power Generation Equipment
SPD | Surge Protection Devices | Earthing & Lightning Protection
AN Wallis has fully acquired PD Devices Ltd, making it a 100% subsidiary of the Wallis Group.
PD Devices Ltd specialises in the design and manufacture of Earthing, Lightning Protection & Surge Protection Systems.
The PD Devices range of Surge Protection Devices (SPD’s) protect against transient over-voltages and increase the reliability of Low & High Voltage electrical equipment systems utilising their Metal Oxide Varistor (MOV) technology: this includes standard Mains Power, Data, Photovoltaic Protection & Equipotential Bonding applications.
Specialist application Surge Protection Devices include: Solid State Interlocking (SSI) | Airfield Lighting Circuits | Rail Trackside
AN Wallis, based in the UK are a leading manufacturer of Earthing & Lightning Protection Products, using high conductivity copper to BS EN 13601 – their earthing products are installed to protect buildings, overhead lines and low/medium/high voltage substations (LV-MV-HV) against potentially catastrophic damage that can be caused by a lightning strike resulting in short circuiting.
The Wallis product range includes copper earth rods (solid copper, copper bond and stainless steel types), earth bars, copper tape, earth clamps and aluminium tapes.
Surge Arresters Lightning Protection for Airfield Lighting Circuits 2DCAFL4 – Data SheetDownload
