SOLUTION This rapid charging creates inrush current which can be 100 times the LED driver’s continuous current rating. Enabling the installation of more luminaires on existing circuit breakers reducing the overall installation costs. endobj We provide sustainable solutions that help our customers effectively manage electrical, hydraulic and mechanical power – more safely, more efficiently and more reliably. Since the calculation of the inrush current is not possible in most cases, only a closer look at the data sheet will help. /Bounds [0.1] The inrush current limiter is connected between mains switch / contactor and load and is approved for inductive and capacitive loads. Instead, a switch actuator is controlled with a push-button or a remote control. The total steady state current for multiple LED Drivers on a branch circuit is easily calculated when planning the lighting upgrade. Legacy electrical services were designed for older lighting modalities which had much lower inrush current. Beware of non-branded or cheap imported units, do a bit of homework before purchasing. Convert Lumens to Watts and Watts to Lumens the Right Way. Energy in Joules = (Peak Voltage)(Inrush Current)(Duration in Seconds) = (339.3V)(840.0A)(0.001S) = 285.0J. Zero-crossing switches are designed for larger installations and are usually installed in the fuse box. If the inrush current is too high, the short-circuit protection of the fuse trips. The second mechanism is a short-circuit protection, which works current-dependently and trips very quickly. This can result in nuisance faulting of circuit breakers, welding of relay contacts and failure of light dimmers. /N 1 8 0 obj /Interpolate false If the light switch suddenly sparks or crackles after converting to LED, the inrush current is too high. We will use values already calculated above for this equation. The installer can be faced with derating the load previously handled by the electrical branch circuit, upgrading existing electrical equipment, or both. endobj The limitation of the inrush current described here should help. You will also find ways to limit the inrush current. When plugged into the socket, a sparking or crackling can often be noticed. 3 86316 Friedberg Germany Phone +49.821.60099-0 Fax +49.821.60099-99info[at]proled.comMember of PROLED GROUP. If this article helped you, please share - thanks! /Width 1497 For the typical LED Driver, the capacitors charge in less than one millisecond after power is turned on. << The Light Emitting Diode (LED) is a small solid state device which converts electrical power into usable light. This effect provides inrush current protection, yet allows efficiency during normal operation. Similar to a classical light switch, the contacts wear out very quickly. LED Luminaire Replacement for 78 Series Recessed Incandescent Light Fixture. An Ametherm Thermistor Inrush Current Limiter, installed in series between the mains power and the LED Drivers, presents an additional resistance to inrush current when the circuit is energized. High inrush current or defective light source? 14 0 obj Eaton’s 2019 revenues were $21.4 billion, and we sell products to customers in more than 175 countries. stream /C0 [0.3098 0.3098 0.3098] From a certain number of lights this can lead to the described problems. /Length 523 A lower current allows smaller wire cross-sections and less circuit breakers. Advanced Lighting Technologies, Inc. (, a lighting market association, has published guidelines for installation of LED Lighting Products.

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