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Caroline County, Virginia Request for Proposals Project 25 Radio ...

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UHF/700 MHz P<strong>25</strong> <strong>Radio</strong> Communications System<strong>Request</strong>ion <strong>for</strong> <strong>Proposals</strong><strong>Caroline</strong> <strong>County</strong>, <strong>Virginia</strong>D. Mechanical:b. Voltage: -48 VDCc. Amperage: As required to sustain equipment operating at full loadd. System shall be capable of completely charging all batteries in lessthan 24 hours while equipment is operating at full load (100% dutycycle)e. Individual breakers shall be supplied <strong>for</strong> each piece of equipmentf. Circuit breakers shall be supplied <strong>for</strong> batteries1. Rack mountable in standard 19” telecommunications rack.2. Hot-swappable modular rectifiers with (N+1) redundancy shall be utilized.3. Rectifier modules shall be capable of on-line expansion.4. An automatic low voltage disconnect device shall be provided to protectbattery plants from discharge related damage.5. Batteries shall be mounted on rack shelf.May 27, 2011 Page 69 of 134

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