Community College of Allegheny County OCS Security Camera System Pittsburgh, PA
SECTION 263353 - UNINTERRUPTIBLE POWER SUPPLY
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.
1.2
SUMMARY
A. This specification shall define the electrical and mechanical characteristics and requirements for a continuous-duty, single-phase, solid-state uninterruptible power system (UPS). The UPS shall provide high-quality AC power for sensitive electronic equipment loads.
1.3
STANDARDS
A. The UPS shall be designed in accordance with applicable sections of the current revision of the following documents. Where a conflict arises between these documents and statements made herein, the statements in this specification shall govern. 1. Safety: UL 1778 4th Edition and CSA 22.2 No. 107.1 2. Emission (Low limits - Conducted and radiated). FCC Part 15 (Class A). CISPR22 Class A (RFI) 3. Surges: ANSI C62.41 Category B. 4. Transportation and Shipping: ISTA 1E (required for palletized units). 5. Additional Agency Compliance: NOM (Liebert affiliate in Mexico will pursue the certification). WEEE and ROHS2 (6 by 6). Reach.
1.4
SYSTEM DESCRIPTION
A. Modes of Operation: The UPS shall be designed to operate as a true on-line double-conversion system in the following modes: 1. Normal - In normal operation, incoming AC power shall be fed to the input power factor corrected (PFC) rectifier that converts the AC power to DC power for the inverter. In this mode, power shall also be derived from utility power for the battery charger. The inverter shall derive DC power from the PFC rectifier to regenerate filtered and regulated AC sinewave power for the connected load. The unit shall begin charging the battery once the UPS is connected to utility power, regardless of whether the UPS is ON or OFF. In the event of a utility outage or severe abnormality (sag or swell), the inverter shall support the connected load from battery power until the battery is discharged or the utility power returns, whichever occurs first.
263353-1
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