DaimlerChryslerConstruction Standards

12/17/04

SECTION 16261 - UNINTERRUPTIBLE POWER SUPPLY

PART 1 - GENERAL

1.1SUMMARY

  1. This Section includes 3-phase, static-type, uninterruptible power supply (UPS) systems, complete with batteries.

1.2INFORMATION TO BE SUBMITTED WITH BID

  1. Submit weights and dimensions for components and overall layout of each system.
  2. Statement if systems are listed under UL 924 in addition to other requirements.
  3. Statement if systems meet minimum battery operation, recharge time and rate, cell discharge voltage, and system transfer response time requirements of UL 924.

1.3SUBMITTALS

  1. Product Data: Include data on features, components, ratings, and performance.
  2. Shop Drawings: Detail fabrication, internal and interconnecting wiring, and installation of UPS system. Include dimensioned plan, elevation views, and details of control panels. Show access and clearance requirements. Differentiate between field-installed and factory-installed wiring and components.
  3. Product Certificates: Signed by manufacturers of UPS systems certifying that the products furnished comply with requirements.
  4. Factory Test Reports: Comply with specified requirements.
  5. Field test results, including recordings of individual battery cell voltage.
  6. Maintenance Data: For system and products to include the following:
  7. Lists of recommended spare parts and replacement components.
  8. Detailed operating instructions for under both normal and abnormal conditions.
  9. Warranties: Special warranties specified in this Section.

1.4QUALITY ASSURANCE

  1. UPS system supplier shall have responsibility for entire system including batteries, electronics, and other components.
  2. Provide UPS listed and labeled as a factory-assembled unit.
  3. "Listed" and "Labeled" as defined in the National Electrical Code, Article100.

SUBPARA BELOW IS REQUIRED BY SOME FEDERAL AGENCIES.

  1. Comply with the following:
  2. UL1778.
  3. NFPA70.

1.5DELIVERY, STORAGE, AND HANDLING

  1. Shipping sections shall be placed in electrical rooms either by lifting through 8 foot by 10 foot floor hatch openings or delivering through 10 foot high by 8 foot wide doors.
  2. Tag equipment with P.O. numbers and assembly numbers. Include packing slips and tags with P.O. and assembly numbers for boxes, cartons, or crates shipped loose.

1.6WARRANTY

  1. Special Warranty Period for Batteries: 10 years from date of beneficial occupancy. A full warranty applies to the first 5 years of the period, and a prorated warranty applies to the last 5 years.

PART 2 - PRODUCTS

2.1MANUFACTURERS

  1. Manufacturers: Unless otherwise directed by the Owner, provide products by one of the following:
  2. UPS Module
  3. Exide Electronics
  4. Liebert Corp.
  5. International Power Machines
  6. MGE
  7. Hubbell
  8. Batteries
  9. Johnson Controls
  10. Chloride
  11. GNB
  12. Powersafe
  13. Exide

2.2MANUFACTURED UNITS

  1. Description: Electronic components and switching devices are housed in one or more metal cabinets, with batteries rack or cabinet mounted separately. Automatic system operating functions include the following:
  2. Normal Conditions: Supply the load from the normal ac power input terminals, through the rectifier/battery charger and inverter output to load, with the battery “floating” on the inverter input.
  3. Abnormal Supply Conditions: When the normal ac supply deviates from specified voltage, waveform, or frequency limits, the battery supplies energy to maintain constant inverter output to the load.
  4. When normal power fails, energy supplied by the battery through the inverter continues supply to the load without switching or disturbance.
  5. When power is restored at the normal supply terminals of the system, the rectifier/battery charger supplies power to the load through the inverter and simultaneously recharges the battery. Synchronize the inverter with the external source before transferring the load.
  6. Charge the battery with the rectifier/battery charger. On reaching full charge, shift to a float-charge mode.
  7. When any element of the UPS system fails and power is available at the normal supply terminals of the system, switch the load to the normal source with less than one-quarter-cycle interruption of supply.
  8. The static bypass transfer switch operates to supplement the output of the UPS system for fault clearing.
  9. Functional Description of Manual Operation: Manual operating functions include the following:
  10. Turning the inverter “off” causes the load to be transferred by the static bypass transfer switch directly to the normal ac input source without interruption.
  11. Turning the inverter “on” causes the static bypass transfer switch to transfer the load to the inverter.
  12. Maintenance Bypass/Isolation Switch: The switch has 3 settings that produce the following conditions without interrupting supply to the load during switching:
  13. Full Isolation: Load is supplied bypassing UPS. UPS ac supply input, static bypass transfer switch, and UPS load terminals are completely disconnected from external circuits.
  14. Maintenance Bypass: Load is supplied bypassing UPS. UPS ac supply terminals are energized to permit operational checking, but system load terminals are isolated from the load.
  15. Normal: UPS ac supply terminals are energized and the load is being supplied through either the static bypass transfer switch or the UPS rectifier and inverter.

2.3SYSTEM SERVICE CONDITIONS

  1. Environmental Conditions: Operate continuously in the following environmental conditions without mechanical or electrical damage or degradation of operating capability:
  2. Ambient Temperature: 0 to 40 degC.
  3. Relative Humidity: 0 to 95 percent, noncondensing.
  4. Altitude: Sea level to 4000 feet (1220 m).

IF UNUSUAL SERVICE CONDITIONS FOR UPS EQUIPMENT EXIST AND CANNOT BE ELIMINATED, SPECIFY THEM HERE. SEE EDITING INSTRUCTION NO.2 IN THE EVALUATIONS.

2.4SYSTEM CHARACTERISTICS

  1. Input Voltage: 480/277 Volts, plus or minus 10 percent, 60 Hertz, 3 phase, 4 wire.
  2. Output Power: The power requirements listed below are the minimum required.
  3. 150 kVA at 0.8 lagging power factor.
  4. 75 kVA at 0.8 lagging power factor.
  5. Output Voltage: 480/277 Volts, plus or minus 2 percent, 3 phase, 4 wire.
  6. Output Frequency: 60 Hertz, plus or minus 2 Hertz.
  7. Transfer Interval: Less than 4 milliseconds, such that high intensity discharge lamps do not extinguish.
  8. Output Waveform: Sinusoidal with maximum 5 percent RMS Total Harmonic Distortion (THD).
  9. Minimum Duration of Battery Supply: Full rated output for 90 minutes.
  10. Performance under steady-state and transient-load conditions remains within specified tolerances throughout duration of supply from battery.

2.5COMPATIBILITY WITH LOAD

  1. Operate within specified tolerances and supply load with the following characteristics:
  2. Fluorescent lamps with electronic ballast, 15 percent THD to be 10 percent of UPS capacity.
  3. HID lamps (Metal-Halide) to be 90 percent of UPS capacity.

2.6PERFORMANCE AND EFFICIENCIES

  1. Overall system efficiency:
  2. 75 kVA Systems: 84 percent at 100 percent load, 83 percent at 75 percent load, and 82 percent at 50 percent load.
  3. 150 kVA Systems: 88 percent at 100 percent load, 87 percent at 75 percent load, and 86 percent at 50 percent load.
  4. Maximum Acoustical Noise: Emanating from the system under any condition of normal operation, measured 48 inches from nearest surface of the enclosure.
  5. 75 kVA Systems: 60 dBA.
  6. 150 kVA Systems: 78 dBA,.
  7. Maximum Energizing Inrush: 2 times the full-load current.
  8. Maximum Output-Voltage Regulation for Loads up to 50 Percent Unbalanced: Plus or minus 2 percent of the full range of battery voltage.
  9. Overload Capacity of System: 130 percent of full-load rating for 5 minutes.
  10. Maximum Output-Voltage Transient Excursions: Voltage remains within the stated values and recovers to within plus or minus 2 percent of that value within 100 ms:
  11. 50 Percent: Plus or minus 8 percent.
  12. 100 Percent: Plus or minus 10 percent.
  13. Loss of AC Input Power: Plus or minus 5 percent.
  14. Restoration of Input Power: Plus or minus 5 percent.

2.7SYSTEM COMPONENTS, GENERAL

  1. Enclosures: Provide separate cabinets or separate compartments of enclosures for components such as static bypass transfer switch, rectifier, inverter, and bypass.
  2. Control Assemblies: Mount on modular plug-ins, arranged for easy maintenance.
  3. Surge Suppression: Protect UPS system input elements, rectifier/battery charger, inverter, controls, and output components against voltage transients with surge suppressors listed in UL1449, and tested according to IEEEC62.41, CategoryB.
  4. Power Assemblies: Mount rectifier and inverter sections and static bypass transfer switch on modular plug-ins, arranged for easy maintenance.

2.8RECTIFIER/BATTERY CHARGER

  1. Capacity: Adequate to supply the inverter during full output load conditions and simultaneously recharge the battery in accordance with UL 924 requirements.
  2. Input Current Distortion: Less than 32 percent THD at rated UPS load.
  3. Compatibility with Battery: Provide float and charging conditions per battery manufacturer's instructions.
  4. Input Power Factor: At least 0.85 lagging when supply voltage and current are at nominal rated values and UPS are supplying rated full load.

2.9BATTERY

  1. Description: Sealed valve-regulated, lead-acid units, factory assembled in a separate cabinet. Equip battery assembly with battery disconnect switch and arrange for drawout removal of the battery assembly from the cabinet for inspection and test.
  2. Provide total number of batteries such that after a full duration, full load run the cells will not be discharged below 1.75 Volts per cell.

2.10INVERTER

SELECT 1 OF 2 PARAS BELOW. SELECT SECOND PARA IF UPS ARE SUPPLIED BY A STANDBY GENERATOR SET.

  1. Pulse-width modulated, with sinusoidal output.

2.11STATIC BYPASS TRANSFER SWITCH

  1. Switch Rating: Continuous duty at rated full load. Switch provides make-before-break transfer. A contactor or electrically operated circuit breaker in the inverter output provides electrical isolation.

2.12MAINTENANCE BYPASS/ISOLATION SWITCH

  1. Comply with NEMAPB 2 and UL891.
  2. Switch Rating: Continuous duty at rated full load of system.
  3. Mounting Provisions: Locate inside one of the modular system cabinets, behind a lockable door.

2.13INDICATION AND CONTROL

  1. General: Group displays, indications, and basic system controls on a common control panel on the front of UPS enclosure, viewable without opening doors.
  2. Minimum displays, indicating devices, and controls include those in lists below. Provide sensors, transducers, terminals, relays, and wiring required to support listed items. An audible signal sounds for alarms as well as the visual indication.
  3. Indications: Plain-language messages on a liquid crystal or digital LED display.
  4. Status Indications: Include the following:
  5. Normal operation.
  6. Load on bypass.
  7. Load on battery.
  8. Inverter off.
  9. Alarm condition exists.
  10. Battery dc volts.
  11. Battery charge dc amps.
  12. Output ac volts.
  13. Alarm Indications: Include the following:
  14. Bypass ac input overvoltage or undervoltage.
  15. Bypass ac input and inverter out of synchronization.
  16. Bypass ac input single-phase condition.
  17. Battery system alarm.
  18. Control power failure.
  19. Fan failure.
  20. UPS overload.
  21. Battery-charging control faulty.
  22. Input overvoltage or undervoltage.
  23. Approaching end of battery operation.
  24. Battery undervoltage shutdown.
  25. Maximum battery voltage.
  26. Inverter power-supply fault.
  27. UPS overload shutdown.
  28. Controls: Include the following:
  29. Inverter on-off.
  30. UPS start.
  31. Battery test.
  32. Alarm silence/reset.
  33. Output-voltage adjustment.
  34. Dry Form "C" Contacts: For remote indication of the following conditions:
  35. UPS on battery.
  36. UPS on-line.
  37. UPS load on bypass.
  38. UPS in alarm condition.

2.14MECHANICAL FEATURES

  1. Enclosures: NEMA250, Type1.
  2. Ventilation: Redundant fans or blowers.

2.15SOURCE QUALITY CONTROL

  1. Test complete UPS, including battery, before shipment. Include the following tests:
  2. Functional test and demonstration of all functions, controls, indicators, sensors, and protective devices.
  3. Full-load test.
  4. Transient-load response test.
  5. Overload test.
  6. Power failure test.
  7. Efficiency test at 50, 75, and 100 percent loads.
  8. Observation of Test: Notify Owner 14 days advance notice of tests.

2.16REMOTE MONITORING AND ALARM

  1. Provide remote monitoring and alarm panel, one for each system quoted under this package. Panel shall include at least the following monitoring and alarm functions:
  2. System normal.
  3. UPS alarm.
  4. Shutdown imminent.
  5. Mains failure.
  6. Load on reserve.
  7. Inverter fault.
  8. LED test.
  9. Alarm mute.
  10. On/off switch.
  11. Remote Summary Alarm Contact: Provide alarm relay contact to activate if any of the local alarms specified are set.
  12. Include all hardware, except cabling from main unit to remote and required software.
  13. PC-based systems providing the same functions and capabilities are acceptable.

PART 3 - EXECUTION

3.1INSTALLATION

  1. Install and interconnect system components. Make connections to supply , bypass battery, and load circuits according to manufacturer's wiring diagrams, unless otherwise indicated.
  2. Install equipment cabinets.
  3. Install battery racks and cabinets.
  4. Unload, inspect and install individual batteries in racks and cabinets.
  5. Install battery interconnection cables.
  6. Connect the UPS to its power supply.
  7. Connect the UPS bypass circuit.
  8. Connect the assembled battery to the UPS.
  9. Connect the UPS to load.

3.2FIELD QUALITY CONTROL

  1. Manufacturer’s Field Service: Under supervision of a factory-authorized service representative, test system functions, operations, and protective features; report results in writing.
  2. Test and adjust controls and safeties.
  3. Test and adjust UPS system components.
  4. Test and adjust metering instruments and components.
  5. Verify all wiring has been terminated properly.
  6. Certify equipment is ready for energization.
  1. Test and adjust under its connected load.
  2. Correct deficiencies and retest until UPS equipment demonstrates that it meets specified requirements.

3.3CLEANING

  1. On completion of installation, inspect system components. Remove paint splatter and debris. Repair scratches and mars of finish to match original finish.

3.4COMMISSIONING

  1. Equalize charge of battery cells according to manufacturer's written instructions. Record individual cell voltages.

DELETE "INDEPENDENT" IN PARA BELOW IF INDEPENDENT TESTING IS NOT REQUIRED.

END OF SECTION

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