Hybrid Telecom DC Power from 18kW to 30kW

A single radio cabinet and a full shared tower do not need the same power plant. In a LinkedIn post, SARBS introduced its power system in the 18kW to 30kW class and tagged it as a hybrid telecom DC power system. The hardware underneath is the same idea as the smaller rectifier: several modules, one controller, AC in, DC out.

Why “hybrid” is the right word

On these sites the grid is one source, the battery is the ride-through, and a generator or a renewable input may be the third. The DC plant has to accept that mix without asking the radio to notice. A modular rectifier shelf lets the operator add modules as tenants arrive, instead of replacing the whole system at year three.

The published feature list still applies at this size. The range is 85 to 300 volts AC down to 54 volts DC. Up to six rectifier modules fit the compact system SARBS describes, with room in the wider 18 to 30 kilowatt class for the loads a busier site carries. Universal modules, battery information on the display, and tenant-wise current and watts keep the plant understandable after the installers leave.

Pair it with storage and a cabinet

A hybrid plant without a battery strategy is only a charger. Size the LiFePO4 or gel string for the outage you actually see, put the shelf in an outdoor cabinet if there is no room, and connect monitoring before the site is accepted. SARBS has recorded seven thousand power systems installed. The 18 to 30 kilowatt class is the one to ask about when the tower is no longer a single small load. Start that conversation on the contact page.

Figures and product notes on this page are taken from the public SARBS website, the SARBS LinkedIn page and the SARBS YouTube channel.