VA 26 32 53-2009 CENTRAL UNINTERRUPTIBLE POWER SUPPLY.pdf

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1、4-09 26 32 53 - 1 SECTION 26 32 53 CENTRAL UNINTERRUPTIBLE POWER SUPPLY SPEC WRITER NOTE: Delete between / - / if not applicable to project. Also delete any other item or paragraph not applicable to the section and renumber the paragraphs. This specification is typically used for large multi-module

2、central UPS systems. It can be edited for smaller single-module UPS systems. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies the furnishing, installation, and connection of the central uninterruptible power supply (UPS). The UPS system shall consist of UPS module, battery system, static bypa

3、ss transfer switch, controls and monitoring. 1.2 RELATED WORK /A. Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS: Requirement for Seismic Restraint for Nonstructural Components./ B. Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS: General electrical requir

4、ements and items that are common to more than one section of Division 26. C. Section 26 05 21, LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES (600 VOLTS AND BELOW): Cables and Wiring. D. Section 26 05 26, GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS: Requirements for personnel safety and to prov

5、ide a low impedance path for possible fault currents. E. Section 26 05 33, RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS: Conduct and outlet boxes. F. Section 26 26 00, POWER DISTRIBUTION UNITS FOR UNINTERRUPTIBLE POWER SYSTEMS: Power distribution units connected to the output of a UPS. 1.3 QUALITY ASSUR

6、ANCE Refer to Paragraph, QUALIFICATIONS, in Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS. 1.4 FACTORY TESTS A. Uninterruptible power supplies shall be thoroughly tested at the factory to assure that there are no electrical or mechanical defects. Provided by IHSNot for ResaleNo reprodu

7、ction or networking permitted without license from IHS-,-,-4-09 26 32 53 - 2 B. The UPS system shall be factory full-load tested to meet the requirements specified using a test battery (not the battery to be supplied with the system) with ac input power and with battery power for a minimum of 8 hour

8、s, with meter readings taken every 30 minutes. Should a malfunction occur, the problem shall be corrected and the test shall be repeated. The tests shall encompass all aspects of operation, such as module failure, static bypass operation, battery failure, input power failure and overload ratings. C.

9、 Furnish four (4) copies of certified manufacturers factory test reports to the Resident Engineer prior to shipment of the UPS equipment to ensure that the UPS equipment has been successfully tested as specified. D. Provide IEEE Std 450 battery installation certification. /E. The Resident Engineer s

10、hall have an option to witness factory tests. The Resident Engineer shall be notified in writing at least 2 weeks before testing. All expenses of the Resident Engineers trip to witness the testing will be paid by the Government./ 1.5 SUBMITTALS Submit in accordance with Section 26 05 11, REQUIREMENT

11、S FOR ELECTRICAL INSTALLATIONS: A. Shop Drawings: 1. Sufficient information, clearly presented, shall be included to determine compliance with drawings and specifications. 2. Include electrical ratings, dimensions, mounting details, materials, required clearances, terminations, weight, wiring and co

12、nnection diagrams, plan, front, side, and rear elevations, accessories, and device nameplate data. B. Manuals: 1. Submit, simultaneously with the shop drawings, companion copies of complete maintenance and operating manuals including technical data sheets, wiring diagrams, and information for orderi

13、ng replacement parts. a. Wiring diagrams shall have their terminals identified to facilitate installation, maintenance, and operation. b. Wiring diagrams shall indicate internal wiring for each item of equipment and the interconnection between the items of equipment. c. Provide a clear and concise d

14、escription of operation, which gives, in detail, the information required to properly operate the equipment. d. Approvals will be based on complete submissions of manuals together with shop drawings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4-

15、09 26 32 53 - 3 2. Two weeks prior to final inspection, deliver four copies of the final updated maintenance and operating manuals to the Resident Engineer. a. The manuals shall be updated to include any information necessitated by shop drawing approval. b. Complete “As Installed“ wiring and schemat

16、ic diagrams shall be included which show all items of equipment and their interconnecting wiring. c. Show all terminal identification. d. Include information for testing, repair, trouble shooting, assembly, disassembly, and recommended maintenance intervals. e. Provide a replacement parts list with

17、current prices. Include a list of recommended spare parts, tools, and instruments for testing and maintenance purposes. f. Furnish manuals in loose-leaf binder or manufacturers standard binder. C. Certifications: 1. Two weeks prior to final inspection, submit four copies of the following to the Resi

18、dent Engineer: a. Certification by the Contractor that the assemblies have been properly installed, adjusted and tested. b. Certified copies of all of the factory design and production tests, field test data sheets and reports for the assemblies. 1.6 APPLICABLE PUBLICATIONS A. Publications listed be

19、low (including amendments, addenda, revisions, supplements, and errata), form a part of this specification to the extent referenced. Publications are referenced in the text by basic designation only. B. Institute of Engineering and Electronic Engineers (IEEE): C57.110.(1998; R 2004) Recommended Prac

20、tice for Establishing Transformer Capability When Supplying Nonsinusoidal Load Currents C62.41.1(2002) IEEE Guide on the Surges Environment in Low-Voltage (1000 V and Less) AC Power Circuits C62.41.2(2002) IEEE Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and Less) AC Po

21、wer Circuits Std 450.(2002; Errata 2004) Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications Std 485.(1997; R 2003) Recommended Practice for Sizing Lead-Acid Batteries for Stationary Applications Provided by IHSNot for ResaleNo rep

22、roduction or networking permitted without license from IHS-,-,-4-09 26 32 53 - 4 C. National Electrical Manufacturers Association (NEMA): PE 1.(2003; R 2003) Uninterruptible Power Systems - Specification and Performance Verification D. National Fire Protection Association (NFPA): 70-02.National Elec

23、trical Code (NEC). 1.7 DELIVERY, STORAGE, AND HANDLING Store UPS indoors in clean dry space with uniform temperature to prevent condensation. Protect UPS from exposure to dirt, fumes, water, corrosive substances, and physical damage. PART 2 - PRODUCTS 2.1 RATINGS A. System Capacity: Unless stated ot

24、herwise, the parameters listed are under full output load at /0.8/ /0.9/ power factor, with batteries fully charged and floating on the dc bus and with nominal input voltage. Overall / /kVA, / /kW, /non/ /N+1/ redundant, at 40 degrees C. B. Battery Capacity: Discharge time to end voltage: /15/ /240/

25、 / / minutes, at 25 degrees C 77 degrees F. Battery shall be capable of delivering 125 percent of full rated UPS load at initial start-up. C. Static Switch: / / amperes, / / amperes symmetrical interrupting capacity. D. System Bus Bracing: Braced for / / amperes symmetrical interrupting capacity. E.

26、 AC Input 1. Voltage /208/ /480/ / / volts line-to-line, /120/ /277/ /_/ volts line to neutral. 2. Number of phases: 3-phase, 3-wire, plus ground. 3. Voltage Range: Plus 10 percent, minus 15 percent, without affecting battery float voltage or output voltage. 4. Frequency: 60 Hz, plus or minus 5 perc

27、ent. 5. Power walk-in: 20 percent to 100 percent over 15 to 24 seconds. 6. Total harmonic current distortion (THD) reflected into the primary line: /5/ /10/ percent maximum. 7. Transformer sub-cycle inrush: 4 to 8 times full load rating. F. AC Output SPEC WRITER NOTE: If the output voltage is 120/20

28、8 V and the same voltage is not available for the static bypass and maintenance bypass, a transformer will be required in the bypass distribution system. Delete load sharing and redundant module for single module systems. Provided by IHSNot for ResaleNo reproduction or networking permitted without l

29、icense from IHS-,-,-4-09 26 32 53 - 5 1. Voltage /208/ /480/ volts line-to-line, /120/ /277/ volts line-to-neutral. 2. Number of phases: 3-phase, 4-wire, plus ground. 3. Voltage regulation: a. Balanced load: Plus or minus 1.0 percent. b. 50 percent load imbalance, phase-to-phase: Plus or minus 2 per

30、cent. c. No-load voltage modulation: Plus or minus 1 percent. d. Voltage drift: Plus or minus 1 percent over any 30 day interval (or length of test) at stated ambient conditions. 4. Voltage adjustment: Plus or minus 5 percent manually. 5. Frequency: 60 Hz. 6. Frequency regulation: Plus or minus 0.1

31、percent. 7. Frequency drift: Plus or minus 0.1 percent over any 24 hour interval (or length of test) at stated ambient conditions when on internal oscillator. 8. Harmonic content (RMS voltage): 3 percent single harmonic, maximum; 5 percent total maximum with linear load. Voltage THD shall be less th

32、an 7 percent with up to 50 percent nonlinear load and a crest factor of less than 3 to 1. 9. Load power factor operating range: 1.0 to 0.8 lagging. 10. Phase displacement: a. Balanced load: Plus or minus 1 degree of bypass input. b. 50 percent load imbalance phase-to-phase: Plus or minus 3 degrees o

33、f bypass input. 11. Wave-form deviation factor: 5 percent at no load. 12. Overload capability (at full voltage) (excluding battery): a. 125 percent load for 10 minutes. b. 150 percent load for 30 seconds. c. 300 percent load for one cycle after which it shall be current limited to 150 percent until

34、fault is cleared or UPS goes to bypass. 13. Load sharing of parallel modules: Plus or minus 5 percent of average load per module. G. Transient Response 1. Voltage Transients a. 50 percent load step/0 percent to 50 percent load: Plus or minus 8 percent. b. 50 percent load step/50 percent to 100 perce

35、nt load: Plus or minus 8 percent. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4-09 26 32 53 - 6 c. Loss or return of ac input: Plus or minus 1 percent. d. Loss or return of redundant module: 1) Manually: Plus or minus 8 percent. 2) Automatically:

36、 Plus or minus 8 percent. e. Automatic transfer of load from UPS to bypass: Plus or minus 4 percent. f. Manual retransfer of load from bypass to UPS: Plus or minus 4 percent. g. Response time: Recovery to 99 percent steady-state condition within 50 milliseconds after any of the above transients. 2.

37、Frequency a. Transients: Plus or minus 0.5 Hz maximum. b. Slew Rate: 1.0 Hz maximum per second. 2.2 UPS A. General Description: UPS module shall consist of a rectifier/charger unit and a 3-phase inverter MODULE unit with their associated transformers, synchronizing equipment, protective devices and

38、accessories as required for operation. B. Rectifier/Charger Unit: Rectifier/charger unit shall be solid state and shall provide direct current to the dc bus. 1. Input Protective Device: Rectifier/charger unit shall be provided with an input protective device. The protective device shall be sized to

39、accept simultaneously the full-rated load and the battery recharge current. The protective device shall be capable of shunt tripping and shall have / / amperes symmetrical interrupting capacity. The protective device shall have provision for locking in the “off“ position. A surge suppression device

40、shall be installed at the UPS input to protect against lightning and switching surges. 2. Power Transformer: A dry-type, isolated-winding power transformer shall be used for the rectifier unit. The transformers hottest spot winding temperature shall not exceed the temperature limit of the transforme

41、r insulation material when operating at full load. The transformer insulation shall be Class H, 150 degrees C rise. Transformer connections shall be accessible from the front. 3. Power Walk-In: Rectifier/charger unit shall be protected by a power walk-in feature such that when ac power is returned t

42、o the ac input bus, the total initial power requirement will not exceed 20 percent of the rated full load current. This demand shall increase gradually to 100 percent of the rated full load current plus the battery charging current over the specified time interval. Provided by IHSNot for ResaleNo re

43、production or networking permitted without license from IHS-,-,-4-09 26 32 53 - 7 4. Sizing: Rectifier/charger unit shall be sized for the following two simultaneous operating conditions: a. Supplying the full rated load current to the inverter. b. Recharging a fully-discharged battery to 95 percent

44、 of rated ampere-hour capacity within ten times the discharge time after normal ac power is restored, with the input protective device closed. 5. Battery Charging Current SPEC WRITER NOTE: Delete second step current limiting if the UPS system will not be supplied with ac power from an auxiliary gene

45、rator system or if the generator has been sized to accommodate the recharge current of the battery. a. Primary current limiting: Battery-charging current shall be voltage regulated and current limited. The battery-charging current limit shall be separately adjustable from 2 percent to 25 percent of

46、the maximum discharge current. After the battery is recharged, the rectifier/charger unit shall maintain the battery at full float charge until the next operation under input power failure. Battery charger shall be capable of providing equalizing charge to the battery. b. Second step current limitin

47、g: The rectifier/charger unit shall also have a second-step battery current limit. This second-step current limit shall sense actual battery current and reduce the input power demand for battery recharging to 50 percent (adjustable from 30 percent to 70 percent) of the normal rate without affecting

48、the systems ability to supply full-rated power to the connected load. The second-step current-limit circuit shall be activated by a dry contact signal from the generator set controls and shall prevent normal rate battery recharging until utility power is restored. 6. Output Filter: Rectifier/charger

49、 unit shall have an output filter to minimize ripple current supplied to the battery; the ripple current into the battery shall not exceed 3 percent RMS. 7. DC Voltage Adjustment: Rectifier/charger unit shall have manual means for adjusting dc voltage for battery equalization, to provide voltage within plus 10 percent of nominal float voltage. 8. Battery