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8 February 2016

250W, PFC-input, Encapsulated AC / DC Power Supplies Suit Extreme Environments

Absopulse

The PPF 250-P59X series of fully encapsulated, AC / DC power supplies deliver up to 250W output power from a universal 95Vac-264Vac power factor corrected (PFC) input. The units provide a single, regulated output of 12Vdc, 24Vdc, 48Vdc, 72Vdc, 110Vdc or 125Vdc. A DC-input version, which offers a 95Vdc-350Vdc input range, is also available. Typical conversion efficiency is 80% at full load.

The power supplies are designed for operation in extreme environments, including in transportation, mining, marine and electrical utilities. The units are fully encapsulated with a thermally conductive MIL-grade silicon rubber compound with a UL94V-0 flammability rating to ensure protection from high levels of shock and vibration, moisture and other contaminants.

They also meet environmental criteria as requested in MIL-810C, D. Conduction cooling via the baseplate enables operation within a -40°C to 70°C temperature range for full specification, with no derating required.

The power factor is corrected to a minimum of 0.97 at full load for the entire input range, in compliance with EN6100-3-2 for low input harmonic distortion. The power supplies are filtered to meet EN55022 EMI Class A with generous margins. Filtering to meet Class B is available on request. Full electronic protection on the input and output includes 4300Vdc input / output isolation, overload, overvoltage, short-circuit protection and thermal shutdown with auto-resetting.

Please contact Absopulse for pricing and delivery.

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