Current transformer

isolationpowerfor airfield lighting system

Airfield Lighting Systems combined switching transformers. Using separate transformers with switching units takes up valuable space in transformer pits. This product is an ideal solution to solve this issue. The ALS Combined Switching Transformer provides lamp control and power in a single unit, saving space and cost, and minimising connections. They include a wide range of input and output currents and are available in Fail-On and Fail-Off versions. The maximum Wattage is 100 Watts. Power and switch circuit isolation is achieved by optical isolation. Leads of all length or leads with any combination of plugs and sockets can be supplied along with ‘daisy chains’ of transformers. Reducing the number of joints and therefore increasing the reliability of the circuit. All ALS transformers are designed and manufactured to BS EN 61823. This also exceeds the requirements of the FAA AC 150/5345-47.All AGLSTs come encapsulated in high quality polyurethane resin and are suitable for burial directly into the ground or into pits. Specifications Switching signal voltages 12V to 72V DC – Half-wave control signals must not be used Switching signal current of 2mA at 48V DC Switching signal to transformer secondary isolation voltage of +2500V AC Control signal cables 2 core, 2.5mm² Current to the lamps is ramped up and down more slowly than the regulator changes its firing angle (150ms) Maximum rms voltage of 33V when open circuit Compliance All AGLSTs meet the following industry standards: BS EN 61823 FAA specification AC 150/5345-47 ICAO Design Manual, Part 5, Electrical Systems Features Encapsulated in a homogenous high quality polyurethane resin