Emerson Network Power LDS100 series power supplies for LED lighting

The LDS100 series 100 W LED power supplies offer a choice of models - featuring an input range of 120 to 277 VAC (H models) and an input range of 100 to 240 VAC (U model). The first models in the series feature Class 2 outputs capable of delivering up to 4.1 A at 24 VDC and offer both constant current and constant voltage output modes, enabling customers to meet the demands of different LED lighting systems with a single model, thereby minimising inventory.

Constant voltage mode operates from no load to full load. The LDS100-24-H03 model features programmable current limit levels, controlled via an IEC 60929-compliant interface using a standard 0 to 10 V signal, to support dimming. The current limit level is also resistor programmable and can be preset by the system designer. All power supply models feature active power factor correction rated at 0.9 minimum to support Energy Star requirements and meet the class C harmonic requirements of IEC 61000-3-2. The supplies also have a very high conversion efficiency - typically 90% when operating from a nominal 230 VAC input - which further helps minimise users’ running costs. They are rated for operation over a wide case temperature range of -40 to 90°C, without forced air cooling. The power supplies are available with ingress protection ratings IP67, which provides protection against shallow water immersion, and are intended for outdoor and ruggedised indoor applications. Housed in a slimline package measuring 215 x 42 mm, with a height of 30 mm, the power supplies are easy to accommodate in modern LED lighting fixtures with limited space.

The LDS100 series power supplies comply with the CISPR 15 requirement for EMI and meet FCC part 15 conducted noise standards. They are protected against short-circuit, overvoltage and overtemperature conditions. The surge immunity performance of the series has been evaluated to installation class 3 (U models) and class 4 (H models) test levels set out in IEC 61000-4-5. Critical safety specifications include EN 61347-2-13 and UL 8750, which are specific to LED-related applications, and the LDS100 series also complies with CSA C22.2 No. 107.1 and CE LVD directives.