What this product is
Architecturally, the R48-1000E3 utilizes a two-stage high-frequency power conversion design. The front-end active PFC stage delivers a power factor of up to 0.99 and exceptionally low total harmonic distortion (THD) across an ultra-wide AC line window. The isolated DC-DC stage features a resonant LLC soft-switching topology operating with zero voltage switching (ZVS) to minimize switching stress. Internal operations are governed by a central DSP that communicates diagnostics, status, and control parameters over an integrated CAN bus interface via blind-mate backplane connectors.
What problem it solves
Eliminates unexpected telecom power outages caused by extreme electrical surges, sustained brownouts, and volatile grid fluctuations through its 85V AC to 300V AC operational envelope. It prevents thermal overload shutdowns in compact outdoor cabinets through dynamic load-dependent fan curves, and safeguards against catastrophic DC bus collapse via autonomous overvoltage latching, active current sharing, and reverse-polarity isolation.
Who and where it is for
Tailored for 4G/5G remote radio heads and baseband unit (BBU/RRU) enclosures, fiber-to-the-home (FTTx) optical line terminals, industrial microwave repeaters, enterprise edge telecom cabinets, and Vertiv NetSure 211, 212, and 531 DC power shelves requiring compact -48V subrack modular power.
