Community College of Allegheny County OCS Security Camera System Pittsburgh, PA
Dimensions W x D x H, in. (mm)
Model
Weight lb. (kg)
GXT5-5000MVRT4UXLN 16.9 x 25.6 x 6.8 (430 x 650 x 173)
125.6 (57.0)
D. Cooling: The UPS shall be forced-air cooled by an internally mounted, continuously operating fan. Fan speed shall be controlled by the UPS from 50% to 100%. Air intake shall be through the front of the unit and exhausted out the rear of the unit.
2.2
COMPONENTS
A.
Input Converter: 1.
General: Incoming AC power shall be converted to a regulated DC output by the input converter supplying DC power to the inverter. The input converter shall provide input power factor correction (PFC) and input current distortion reduction. 2. AC Input Current Limit: The input converter shall be provided with AC input current limiting whereby the maximum input current is limited to 125% of the full load input current rating. 3. Input Protection: The UPS shall have built-in protection against under voltage, over current and overvoltage conditions including low-energy lightning surges, introduced on the primary AC source. The UPS shall be able to sustain input surges without damage per criteria listed in ANSI C62.41, Category A, Level 3. 4. Battery Recharge: The UPS shall contain a three-stage battery charger designed to prolong battery life. Recharge time for the internal UPS batteries shall be 3 hours maximum to 90% capacity (full-load discharge rate). There shall be DC overvoltage protection so that if the DC voltage exceeds the pre-set limit, the UPS will shut down automatically and the critical load will be transferred to bypass. General: The UPS inverter shall be a pulse-width-modulated (PWM) design capable of providing the specified AC output. The inverter shall convert DC power from the input converter output or the battery into precise sinewave AC power for supporting the critical AC load. 2. Overload: The inverter shall be capable of supplying current and voltage for overloads exceeding 100% and up to 200% of full load current. A visual indicator and audible alarm shall indicate overload operation. For greater currents or longer time duration, the inverter shall have electronic current-limiting protection to prevent damage to components. The inverter shall be self-protecting against any magnitude of connected output overload. Inverter control logic shall sense and disconnect the inverter from the critical AC load without the requirement to clear protective devices. 3. Inverter DC Protection: The inverter shall be protected by the following DC shutdown levels: Inverter 1.
B.
263353-7
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