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SPD and LED Driver Surge Protection: In-House Testing

A fixture can have excellent efficacy and perfect optics and still fail in its first monsoon season. This is because it's not always the LED itself. The surge is the one that makes it to the luminaire electronics from a lightning strike or switching surge via the supply cable. The key to reliable protection is that the components are not just one. It is a result of the surge protective device (SPD) working in conjunction with the LED driver and the wiring and the luminaire as a single unit.  The interpretation of SPD ratings, what LED driver surge immunity is, how the two are coordinated and how the final output is verified through an in-house surge test are described.  The Protection Chain Incoming surge → SPD → Residual voltage → LED driver → LED module The SPD prevents surge currents from damaging the connected equipment, while also limiting the voltage. What gets past it, the residual voltage, is what the driver actually has to withstand. The goal is not to choose the SP...
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LED Lighting for EOT Cranes: Selection Guide, Benefits & Applications

EOT cranes are the machines that are utilised in industrial areas to lift and move heavy loads. They are prevalent in steel plants, cement plants, power plants, engineering workshops, manufacturing plants, warehouses, winder rooms and process industries. LED lighting for the crane can ensure top visibility for crane operators, hook riggers and floor workers when lifting and handling materials. These benefits include energy efficiency, long service life, durability and low maintenance requirements, resulting in a preference for LED lights. There are two popular choices of lights: LED High Bay Lights and LED Flood Lights. The right choice is dependent on the mounting height, lighting needs, beam angle, environment and lighting layout.  Why Is Lighting Important in EOT Crane Areas? Good lighting provides the operator/worker with a view of the load and the lifting accessories, and the path of the load. Poor lighting may cause shadowing, lack of signals, slow lifts, and unintentio...
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DOB vs. External LED Driver: Which Is Better for LED Lighting?

Why do some LED lights use a compact driver circuit on the LED board, while others use a separate external driver? The answer affects more than the size and initial cost of a light. It may also affect electrical safety, heat control, flickering, power control, dimming, and maintenance. DOB is a design in which the LED driver circuit is placed on the same PCB as the LEDs. It is generally suitable for compact, cost-sensitive, low-power fixtures, roughly 20–25W or less, depending on the design. The External LED Driver refers to an external power supply unit used to control the flow of electricity to the LED fixture. The LED driver is normally recommended for applications where medium and high levels of illumination are needed. What is better The right choice depends on the application, electrical requirements, operating environment and total cost of ownership—not simply the purchase price. What Is DOB LED Lighting? DOB stands for " Direct-On-Board. In the design, both the driver ci...
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