1. 3 system description 1 Design Requirements ups module




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1.4 ENVIRONMENTAL CONDITIONS


The UPS shall be able to withstand the following environmental conditions without damage or degradation of operating characteristics:

A. Operating Ambient Temperature

UPS Module: 32°F to 104F (0C to 40C).

Battery: 77 +/-9F (25 +/-5C).

B. Storage/Transport Ambient Temperature

UPS Module: -4F to 158F (-20C to 70C).

Battery: -4F to 92F (-20C to 33C)

C. Relative Humidity

0 to 95%, non-condensing.

D. Altitude

Operating: to 6,600 ft. (2,000 meters) above Mean Sea Level. Derated for higher altitude applications.

Storage/Transport: to 40,000 ft. (12,200 meters) above Mean Sea Level.

E. Audible Noise

Noise generated by the UPS under any condition of normal operation shall not exceed 65 dBA measured 1 meter from surface of the UPS.

1.5 SUBMITTALS

1.5.1 Proposal Submittals


Submittals with the proposal shall include:

  • System configuration with single-line diagrams.

  • Functional relationship of equipment including weights, dimensions, and heat dissipation.

  • Descriptions of equipment to be furnished, including deviations from these specifications.

  • Size and weight of shipping units to be handled by installing contractor.

  • Detailed layouts of customer power and control connections.

  • Detailed installation drawings including all terminal locations.



1.5.2 UPS Delivery Submittals


Submittals upon UPS delivery shall include a complete set of submittal drawings and one (1) instruction manual that shall include a functional description of the equipment with block diagrams, safety precautions, instructions, step-by-step operating procedures and routine maintenance guidelines, including illustrations.

1.6 WARRANTY

1.6.1 UPS Module


The UPS manufacturer shall warrant the UPS module against defects in materials and workmanship for 12 months after initial start-up or 18 months after ship date, whichever period expires first.

1.6.2 Battery


The battery manufacturer’s standard warranty shall be passed through to the end user.

1.7 QUALITY ASSURANCE

1.7.1 Manufacturer Qualifications


A minimum of twenty year’s experience in the design, manufacture, and testing of solid-state UPS systems is required. The system shall be designed and manufactured according to world-class quality standards. The manufacturer shall be ISO 9001 certified.

1.7.2 Factory Testing


Before shipment, the manufacturer shall fully and completely test the system to assure compliance with the specification.

2.0 PRODUCT

2.1 FABRICATION

2.1.1 Materials


All materials of the UPS shall be new, of current manufacture, high grade and free from all defects and shall not have been in prior service except as required during factory testing.

The maximum working voltage, current, and di/dt of all solid-state power components and electronic devices shall not exceed 75% of the ratings established by their manufacturer. The operating temperature of solid-state component sub-assembly shall not be greater than 75% of their ratings. Electrolytic capacitors shall be computer grade and be operated at no more than 95% of their voltage rating at the maximum rectifier charging voltage.

2.1.2 Wiring


Wiring practices, materials and coding shall be in accordance with the requirements of the National Electrical Code (NFPA 70). All bolted connections of bus bars, lugs, and cables shall be in accordance with requirements of the National Electrical Code and other applicable standards. All electrical power connections are to be torqued to the required value and marked with a visual indicator.

Provision shall be made for power cables to enter or leave from the top or bottom of the UPS cabinet.

2.1.3 Construction and Mounting


The UPS unit, comprised of input transformer (if required), rectifier/charger with input filter, inverter, static transfer switch, output transformer and maintenance bypass switch, shall be housed in a single free-standing NEMA type 1 enclosure. Cabinet doors/covers shall require a tool for gaining access. Casters and stops shall be provided for ease of installation. Front access only shall be required for expedient servicing, adjustments, and installation. The UPS cabinet shall be structurally adequate and have provisions for hoisting, jacking, and forklift handling.

The UPS cabinet shall be cleaned, primed, and painted with the manufacturer’s standard color. The UPS shall be constructed of replaceable subassemblies. Printed circuit assemblies shall be plug connections. Like assemblies and like components shall be interchangeable.

2.1.4 Cooling


Cooling of the UPS shall be by forced air. Low-velocity fans shall be used to minimize audible noise output. Fan power shall be provided by the UPS output.

The thermal design, along with all thermal and ambient sensors, shall be coordinated with the protective devices before excessive component or internal cabinet temperatures are exceeded.

2.1.5 Grounding


The AC output neutral shall be electrically isolated from the UPS chassis. The UPS chassis shall have an equipment ground terminal. Provisions for local bonding shall be provided.
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