DIVISION ELECTRICAL SPECIFICATION TABLE OF CONTENTS SECTION BASIC MATERIALS AND METHODS SECTION NAMEPLATE AND WARNING SIGNS

Transcription

1 DIVISION ELECTRICAL SPECIFICATION TABLE OF CONTENTS SECTION GENERAL PROVISIONS SECTION BASIC MATERIALS AND METHODS SECTION NAMEPLATE AND WARNING SIGNS SECTION ELECTRICAL SYSTEMS SECTION STATIC UNINTERRUPTIBLE POWER SUPPLY SECTION ELECTRICAL COMPLETION Weld County TOC - 1

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3 SECTION GENERAL PROVISIONS PART 1 - GENERAL 1.1 CONDITIONS A. All work under this Section shall be governed by project general conditions, along with all supplements and amendments thereto, as published by Weld County. 1.2 CODES AND REGULATIONS: A. Comply with all applicable state and local codes, regulations and ordinances, and the latest applicable requirements of the National Electrical Code (NEC) of the NFPA, as interpreted by the local inspection authority which shall have final jurisdiction. B. Comply also with all OSHA requirements and directives. 1.3 EXAMINATION OF PREMISES A. Examine the premises prior to bidding and become fully familiar with existing conditions. 1.4 PERMITS A. Secure and pay for all permits, fees, taxes, licenses and inspections in connection with the electrical work. 1.5 DRAWINGS AND SPECIFICATIONS A. Drawings are diagrammatic and indicate general arrangement of electrical work. Locations are approximate and shall be subject to minor modifications as directed by Owner and/or Engineer. B. Contractor shall be responsible for exact fitting of all materials, equipment, etc., in building. All dimensions shall be verified on the job. C. Instructions such as "provide..." shall mean "Contractor shall be responsible for the furnishing and installing of new..., complete in every respect." PART 2 - PRODUCTS 2.1 STANDARDS Weld County

4 A. All material shall be new and shall be listed by Underwriters Laboratories Incorporated (UL listed) for the purpose intended and shall bear the UL label. Damaged or defective materials shall be replaced. All materials shall comply with the latest NEMA standards. PART 3 - EXECUTION 3.1 SHOP DRAWINGS: A. Furnish electronic (pdf) sets of Shop Drawings to Owner for the following: 1. UPS B. All materials and equipment shall be approved prior to beginning work. C. Receipt within 30 days after award of contract. D. Shop Drawings, including: 1. Dimensions and detail. 2. Floor plan wiring diagrams showing routing, zones, wire quantity, and field connections. 3. Catalog data specifically for equipment to be used. 4. Maintenance data. E. Electrical Contractor shall provide shop drawing approval stamps on all equipment supplied by them prior to Engineer's shop drawing approval. Electrical Contractor to check for conformance with the design of the project and compliance with the information given in the contract documents. Contractor is responsible for dimensions which shall be confirmed and correlated at the job site; fabrication process and techniques of construction. 3.2 RECORD DRAWINGS: A. Maintain a complete set of Electrical Drawings at the job site with all changes in the work marked thereon in a contrasting color. B. Electrical Contractor shall provide owner at completion of project a complete set of Record drawings showing all changes in work marked there on including all system wiring diagrams. 3.3 COORDINATION: A. Order the progress of the work so as to conform to the progress of other trades. Coordinate all electrical installations and rough-ins as required. 3.4 WORKMANSHIP Weld County

5 A. Provide a competent foreman on the job at all times. All work shall be accomplished in a manner which is neat, workmanlike, of first quality, and compatible with good commercial practices and standards. Provide competent workmen who are skilled as electricians. 3.5 INSTALLATION A. Install all equipment and materials in accordance with information as indicated on Drawings and in full accord with Manufacturer's recommendations. 3.6 CUTTING AND PATCHING: A. Provide all cutting, channeling, chasing, drilling, etc., operations as may be required for electrical work. In general, all such operations shall be held to a minimum. B. All patching and painting shall be done by Contractor. 3.7 CONSTRUCTION POWER AND LIGHTING: EXISTING A. Construction power and lighting for construction is existing. Energy costs will be paid by owner. All temporary facilities shall be properly grounded, shall comply with NEC and OSHA requirements, and shall have ground fault protection. 3.8 SECONDARY SERVICE - EXISTING A. Power for distribution within the building is underground, from the secondary side of padmount transformer service is 3 phase, 4 wire, 277/480 volt, 60 Hertz alternating current for normal power and lighting requirements. Verify these requirements with the local public utility. General arrangement of the service equipment is shown on Drawings. Equipment shall be as specified herein. Provide all coordination with utility company as required. Notify Owner or Engineer if characteristics or point of attachment are different than that shown on Drawings. 3.9 GUARANTEE: A. Guarantee all materials, labor, workmanship and successful operation of all equipment installed under this contract for a period of one year from date of final acceptance. Repair or replace, at no expense to Owner, all defects which may arise during this time due to inferior or defective materials, equipment, or workmanship SUBSTITUTIONS A. The intent of Specifications is to establish quality standards of materials and equipment installed. Specific items are identified by Manufacturer, trade name or catalog designation. Should Contractor propose to furnish materials and equipment other than those specified as permitted by "or approved equal" clauses, he shall submit a written request in duplicate, at least seven calendar days prior to bidding date, for any or all Weld County

6 substitutions to Engineer. Substitutions submitted for approval shall list items as specified with the alternate substitution. B. Where substitutions alter the design, conduit, wiring or space requirements indicated on Drawings, Contractor shall include items of cost for the revised design and construction. C. Substitutions sent by Fax Machine or will not be acceptable and will not be reviewed OUTAGES A. Coordinate all electrical service outages with Owner. Plan all work so that duration of outage is kept to an absolute minimum. Provide temporary wiring as necessary and as required in order to maintain continuous service for Owner's Data Room operations to include UPS and cooling where outage must be accomplished during a time when power is deemed necessary by Owner, or when outage is to be of an extended duration. All outage time and scheduling of same shall be as approved by Owner and shall conform to Owner's schedules DELIVERY AND STORAGE OF MATERIALS A. Make provisions for delivery and safe storage of all materials and make the required arrangements with other Contractors on the job for the introduction into the building of equipment too large to pass through finished openings. B. Where materials are indicated to be furnished by others to Contractor for installation, these materials shall be checked and their delivery properly receipted. Assume full responsibility for the storage and safe keeping of said materials from time of delivery until final acceptance. C. All NEMA 1 rated equipment shall be stored in clean dry location such as trailers or enclosed dry areas of buildings, and etc. Such equipment shall include, but not be limited to, panelboards, switchboards, conductors, light fixtures, special system equipment, devices, and etc AVAILABLE TO OWNER A. Electrical Contractor shall be available to Owner for additional hook up to lights, equipment, etc., on time and material ACCESS PANELS A. Access panels required by the Electrical Contractor shall be provided by the Electrical Bid Contractor then turned over to the appropriate trade for installation DRAWING/SPECIFICATION CONFLICTS Weld County

7 A. In the event of conflict between the Drawings and the Specifications, the more stringent requirement will apply. When a conflict occurs notify Engineer in writing for clarification. END OF SECTION Weld County

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9 SECTION BASIC MATERIALS AND METHODS PART 1 - GENERAL 1.1 STANDARDS A. All materials shall be new, shall be UL listed for the purpose intended, and shall bear the UL label. Damaged or defective materials shall be replaced. All materials shall comply with latest NEMA standards. 1.2 BALANCING A. The complete system shall be load balanced to within percent per phase. 1.3 PHASE ROTATION A. Electrical Contractor shall assure and be responsible for proper phase rotation of all motors, compressors, and other three phase equipment prior to energizing equipment. B. Electrical Contractor shall be responsible and coordinate proper phase rotation connections made by the serving utility company prior to energizing main service equipment. PART 2 - PRODUCTS 2.1 SAFETY SWITCHES A. Provide fusible and non-fusible heavy duty type disconnect switches where shown and required. Switches shall be horsepower rated, quick make, quick-break, by same manufacturer as main distribution center. B. Each enclosure shall be NEMA type suitable for surrounding area and condition. Consult Mechanical Drawings and Specifications for their requirements. C. Switches shall be equipped with rejection clips for Class "R" current limiting fuses. D. Switches shall be same manufacturer as main distribution center. 2.2 FUSES A. Provide sizes, classes and types of fuses as indicated for all fused safety switches. All fuses amps shall have the Class "R" rejection feature. Verify actual load current of all motors prior to ordering fuses and provide fuses of sizes as recommended by Manufacturer. Generally, motor fuses shall be the dual element type and shall be set at Weld County

10 110 percent of full load amps, or 125 percent where required for heavy duty usage or high ambient temperatures. Fuses shall be the power voltage rating to match circuit characteristics in which installed. Fuses indicated on Drawings are those of Bussmann Co., equal by Gould Shawmut or Littel Fuse. 2.3 NAMEPLATES A. Provide 1 x 3 inch laminated plastic nameplates (1/4 inch high white letters; black background for normal power equipment, red background for emergency power equipment) for all switches, panelboards, controllers, etc., in main distribution switchboards and sub-distribution panelboards. Nameplates shall be permanently attached to equipment with two screws. Provide blank nameplates for all spares. B. Neatly label all Junction box coverplates as to their function. Use a permanent ink pen. Labeling shall be lights, smoke detector power, elevator control, fire alarm, receptacles, etc. Labeling shall be done on J-boxes that are above accessible ceiling and in storage rooms and maintenance areas, etc. Do not label J-boxes in public view. 2.4 NM-NONMETALLIC SHEATHED CABLE NOT ALLOWED ON THIS PROJECT 2.5 CONDUCTORS A. Provide a complete system of conductors for all raceway systems. All conductors shall be rated 600V, and shall be of a manufacturer subscribing to applicable IPCEA and NEMA standards and practices. Conductors shall be of sizes and types as indicated, and as required by NEC for specific uses. Where quantities of conductors in a raceway system are not specifically indicated, provide number as required to maintain function, control and number of circuits as indicated. All conductors shall be UL listed and approved, and shall conform to the following: 1. Minimum wire size shall be #12 AWG copper except for control or signal circuits, which may be #14 AWG copper. 2. Unless otherwise indicated, all wiring for branch circuits shall be copper #12 AWG in 1/2" conduit, protected by 20 ampere circuit breakers. See Voltage Drop. 3. Voltage Drop: If distance from panel to first outlet is 75 feet or greater (for 120V circuits), #10 shall be installed from circuit breaker to every device in circuit. 4. Wire sizes #10 AWG copper and smaller shall be solid; #8 AWG copper and larger shall be stranded. B. The following insulation standards shall apply: 1. All feeder conductors shall be type THWN or XHHW. 2. Other conductors shall be per NEC THHN/THWN copper unless noted otherwise, Article Type THWN copper for exterior runs in conduit. C. Motor wiring for power shall be stranded. Weld County

11 D. Aluminum conductors shall not be used on this project. E. Conductor Neutral Applications: 1. Neutrals: Copper, same size as phase conductor, derating neutrals not allowed. 2. Provide separate neutral conductors for each 20 amp single pole breaker. 2.6 CONDUITS A. Conduits shall be provided for all wiring runs as shown and specified. All sizes shall be per NEC. Use GRC where required by code, utility company, for mechanical protection and as shown. Use EMT for all other runs. The use of AC (Armored Cable), MC (Metal Clad), or flexible conduit shall not be used for branch circuits or feeders (except for final connections to vibrating equipment - 36"). Provide approved couplings and connectors for all connections. Final connections to motors and other vibrating or rotating equipment shall be made in flexible conduit. B. Heavywall, type II, rigid, Schedule 40 PVC: 1. For all wiring runs in or under the floor slab which is in contact with the ground. 2. For all wiring runs buried underground, unless otherwise indicated. 3. DO NOT use Schedule 40 or 80 PVC above ground. Conduit sizes one inch and smaller use schedule 80 PVC elbows and conduit sizes 1-1/4 inch and larger use GRC tar coated elbows to maximum six inches above grade then change to EMT conduit. Note: Provide expansion joints in accordance with Manufacturer's recommendations. C. Use approved type couplings and connectors in all conduit runs and make all joints tight. Provide insulated bushings for all terminations in pipe size 1-1/4 inch and larger. Provide all steel set screw couplings and connectors for all other conduits. Provide expansion fitting and bonding conductors for all runs which cross building expansion joints. Provide waterproof steel compression gland couplings and connections for all runs in wet locations such as exposed to weather, buried in slabs, etc. 2.7 SUPPORTS AND HANGERS A. Provide supports and hangers as necessary and as required to insure a good and substantial installation. Support raceways, fixtures, cabinets, boxes, etc., on approved types of trapeze hangers or wall brackets as manufactured by Unistrut or acceptable equal. Provide steel hanger rods securely fastened to or through the building structure for all trapezes, etc. Do not suspend from mechanical piping or ductwork. Perforated plumber's straps or wire will not be permitted. B. Obtain Owner's approval for the use of powder-driven fasteners and use only in locations as he may direct. Weld County

12 C. Contractor shall not fasten, attach or hang any material from the roof deck. All conduits, junction boxes, fixtures, devices and equipment shall be hung from the structural steel frame and shall be placed with a minimum of one inch clearance below the roof deck. Wiring and conduits shall not be placed within the ribs of the roof deck. Contractor shall not loosen, remove or cut any roofing system fasteners protruding through the roof deck. 2.8 OUTLETS A. Outlets shall be galvanized steel or zinc pressed steel outlet boxes for all locations except where otherwise indicated or where cast metal boxes are required by NEC. Boxes are to be 4 inch square or octagonal, 2-1/8 inch deep. Provide plaster or tile rings for all flush outlets installed where wood, drywall tile plaster, etc., types of finishes are applied. All outlets for exterior application shall be cast, weatherproof type, with gasket and case coverplate. Tile boxes of extra depth may be used for interior, dry applications where masonry block or brick walls constitute the finished wall surface. In any event, provide outlet boxes of proper type and design for the particular fixture or device to be installed. Boxes shall be as manufactured by Steel City or acceptable equal. B. Surface mounted boxes shall be cast metal weatherproof, with grounding terminal, threaded hubs, and shall be similar and equal to Crouse-Hinds design Type FD or FS. C. Pull Boxes: Provide pull boxes in raceway runs as required by NEC and job conditions. Install in accessible locations. 2.9 DEVICES AND PLATES A. Receptacles: Provide the following flush receptacle devices where indicated and required. Verify color with Owner prior to installation. All devices to be Specification Grade with screw type terminals. Provide as shown or acceptable equal. 1. Devices: a. 20-3W, grd. duplex-120v Leviton-5352 b. 20A-3W,grd. single-120v Leviton-5261 c. Ground Fault 20 amp Leviton-6899 B. Equivalent devices: Equivalent wiring devices as manufactured by Slater, Arrow Hart, Hubbell, Daniel Woodhead, Eagle, or P & S may be used in lieu of Leviton devices indicated. C. Coverplates: 1. Finished and unfinished areas provide.040 smooth finished coverplates. PART 3 EXECUTION 3.1 CONDUCTORS Weld County

13 A. Conductors shall be continuous from outlet to outlet or J-box. Splices shall be held to a minimum. Where necessary, splice in readily accessible pull box, J-box, or outlet box. The joint insulation value shall equal that of the conductor. Splices and connections shall be made in an approved manner. B. Install wiring in the raceway systems only after the conduit run has been completed and after such time as conduits have been thoroughly cleaned and dried. C. Wire and cable shall be full length factory color coded. Colors for each phase and the neutral shall be consistent throughout the system. 1. The following color code prevails for all service, feeder and branch circuits: Neutral - White for 120V Ground - Green Phase A - Black for 120/208V Phase B - Red for 120/208V Phase C - Blue for 120/208V D. Wire and cable shall be the proper size to fit under lug landings in accordance with UL listing. Where larger wire and cable is used for voltage drop, etc., and will not fit under UL lug listings, Electrical Contractor shall provide proper wire and cable size under lugs and either pigtail to larger wire and cable or use power tap blocks. Provide insulation value equal to the wire and cable being used. E. High Compression Termination: Provide high compression terminations for connecting smaller conductors to larger for voltage drop issues as shown on drawings. H-type compression tap connectors shall be for copper combinations, sized for correct conductor installation using 15 ton and 12 ton head tools per manufacturer UL listed. Manufacturer Thomas and Betts. Compression taps series with high compression tool. Provide shop drawings. Provide interlocking insulating hard covers and secure with tape sealant per manufacturer, UL listed. Manufacturer: Thomas and Betts Series HTCX00 (H-Tap Insulating Hard Covers), and HSTS25 Series. Provide shop drawings. F. Terminations Exterior 1. Terminations shall be silicone filled safety connectors. Connector body shall consist of color-coded shell of non-hygroscopic material, with ribs or wings for easy grip and vibration-absorbing retention fingers. Inside shall be a non-setting, non-conductive, fire-retardant silicone sealant that eliminates the possibility of corrosion and flashover. The connector shall have a plated, conical, square-wire spring to draw in conductors securely as torque is applied. 2. Connectors shall be King Technology's Model King-1, 2, 3, 4, 5, 6, and/or 9 wire connectors for pressure-type locations or accepted equal. G. Provide cable wraps (nylon tie wraps) around branch circuit bundles and feeder bundles in all switchboards, panelboards, and loadcenters. Weld County

14 3.2 CONDUCTOR NEUTRAL APPLICATIONS A. Neutrals: Copper, same size as phase conductor, derating neutrals not allowed. B. Provide separate Neutral conductors for each 20 amp (120V) single pole breaker. 3.3 CONDUITS A. All conduits shall be installed concealed in finished areas. Exposed conduits will be permitted only at surface cabinets, in mechanical equipment rooms, and as otherwise permitted by Owner. B. Route all conduits either parallel or perpendicular to walls and structural members, always avoiding proximity to sources of heat such as flues, hot water lines, etc. Runs which are buried below the floor slab or underground may be run direct (angular) to fullest practical extent. Locate raceways so as not to endanger the strength of any structural members. All runs pertinent to the building structural system shall be installed only when and in manner as approved by Owner. Actual conduit runs are not necessarily indicated, but are to be installed in the most feasible manner compatible with building construction and work of other crafts. Outlets shown connected together must be wired on the same circuit. C. All bends to be made by the use of an approved bending tool. Cut all conduits square and ream all cuts to remove burrs. Exercise all necessary precautions during the construction period to prevent entry or accumulation of moisture, dust, concrete, and all foreign matter into the raceway system. Clean and dry all raceways prior to pulling conductors. D. Provide one spare 3/4" conduit for each three unused poles in all flush mounted panelboards; extend from panelboard to an accessible point beyond the area of finished wall or ceiling construction and cap. E. Secure all raceway systems in building structure in a rigid and secure manner using approved type fasteners such as "Caddy Clips" or similar type of other manufacturer. The use of wire, plumber-straps, etc., will not be permitted. Locations and spacing of fasteners shall be as required by NEC. F. Conduit hangers, clamps, light fixtures, supports, nails, etc., shall be fastened to joists or beams only. Do not support from bottom of roof decking or mechanical ductwork. G. Conduits penetrating through fire-rated walls and floor slabs shall be sealed against the spread of fire and products of combustion with smoke-rating of the floor or wall through which conduits pass. See Drawings for additional requirements. 3.4 OUTLETS A. Install all outlets in a secure and substantial manner and locate so as to be compatible with space, construction and equipment requirements, and with the work of other trades. Weld County

15 Verify final outlet locations with Owner prior to installation. Install all outlets plumb and in accessible locations. Flush outlets are to be installed with front of box or ring flush with finished surface. All outlets are to be installed flush unless used in conjunction with exposed conduit system or unless otherwise indicated. If outlets are not installed plumb, flush, or in approved locations, relocate or reset and refinish at no additional cost to Owner. B. Fire Rated Walls: Maintain separation of J-boxes of horizontal distance of 24 inches box edge to edge of opposite sides of walls or partitions. Use steel outlet boxes or rated J-boxes not exceeding 16 square inches in area, providing the area of such opening, do not aggregate more than 100 square inches for any 100 square feet of wall or partition area. C. J-boxes shall not be stacked atop or use of multiple extension rings on each other to form single J-boxes. Single J-boxes shall be used of proper size per NEC. 3.5 FIRE PENETRATIONS A. Provide fire rated stops to maintain fire ratings of walls, ceilings and floors. B. Conduits may penetrate the walls, ceilings, floors or partitions provided fire stopping is provided per current International Building Code. END OF SECTION Weld County

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17 SECTION NAMEPLATES AND WARNING SIGNS PART 1 - GENERAL 1.1 DESCRIPTION A. Principal work in this Section. 1. The requirements of Section apply to work of this Section. B. Nameplates and warning signs on all electrical equipment and devices. 1. Nameplates and tape labels. 2. Wire and cable markers. 3. Conduit color-coding. 4. Outlet and pullbox identification. 1.2 SUBMITTALS A. Product Data: Required. B. Shop Drawing: Required; include complete schedule of nameplates and labels. C. Samples: Required. D. Closeout: Submittals listed above, except samples, updated to record status. PART 2 - PRODUCTS AND EXECUTION 2.1 NAMEPLATES A. Nameplates and tape labels are required at electrical distribution and control equipment panelboards, transformers, switchboards, conductors, main grounds, wall switches, receptacles, control device stations, and utility termination backboards. B. Black plastic phenolic with white cut-in letters. Nameplates shall be fully descriptive of title, voltage, phase, as applicable. Description shall be on the first line, then voltage, etc., on the second line. If panel, distribution board or device is on the Life Safety emergency system, then the nameplate shall be red with white engraving and the bottom line shall read "EMERGENCY LIFE SAFETY 120V" or "EMERGENCY LIFE SAFETY" single phase, etc. Letters shall be minimum 3/8 inch high. Equipment Emergency shall be white with black letters. Weld County

18 1. Example: a. Panel "EPN" 208Y/120-3 phase - 4W. EMERGENCY (Equipment) Phase A Black Phase B Red Phase C Blue Neutral White Ground - Green 2.02 MATERIALS SUMMARY A. Nameplates: Engraved three-layer laminated plastic, white letters on a black background for Normal, white letters on a red background for Emergency or fire alarm device and white letters on green background for Ground. B. Tape Labels: Embossed adhesive tape, with 3/16 inch white letters on black background for Normal and white letters on red background for Emergency or fire alarm devices. C. The following are acceptable manufacturers and products: 1. Wire and Cable Markers: permanently printed split sleeve tube type adhesive backed circumferential: Brady. 2. Kroy Labels: Kroy tape with 3/8 inch minimum letters, black for Normal, red for Emergency or fire alarm devices, green for Ground. 3. Dymo tape is prohibited. PART 3 - EXECUTION 3.01 EXECUTION SUMMARY A. Install nameplates and tape labels in parallel to equipment lines. 1. Attachment a. Secure nameplates to equipment fronts using screws, rivets. b. Secure nameplate to inside dead fronts of recessed panelboards in finished locations. 2. Kroy tape Use only for identification of individual wall switches and receptacles, control device stations. a. Locate tape on front side of the coverplate. b. On inside of coverplates, use non-washable ink to also identify, use same Weld County

19 3. Wire Identification as Kroy tape on outside of coverplate. a. Provide wire markers on each conductor in panelboard gutters. b. Identify with branch circuit or feeder number as indicted on equipment manufacturer s shop drawings for control wiring. 5. Junction Box and Pull Box Identification a. Use indelible black marker to inscribe circuit, switch numbers and source panel on the outside of each junction and pullbox cover. 6. Conduit Identification a. Kroy tape shall be used to note panel and circuit information on conduits at panels and main junction boxes. 7. Systems Identification 3.02 PREPARATION 3.03 SCHEDULES A. Engraved Nameplates 1. Distribution and control equipment a. Identify equipment and loads served b. 1/8 inch lettering for individual switches and loads served c. 1/4 inch lettering for distribution and control equipment. 2. Panelboards: a. 1/4 inch lettering to identify equipment designation b. 1/8 inch lettering to identify voltage rating and source. 3. Individual Circuit Breakers and Switches in Panelboards and Switchboards: a. 1/8 inch lettering to identify circuit and loads served, including location. 4. Individual Circuit Breakers, Enclosed Disconnect Switches, and Motor Starters. END OF SECTION Weld County

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21 SECTION ELECTRICAL SYSTEMS PART 1 - GENERAL 1.1 Furnish and install a complete electrical system as shown on Drawings and Specifications. PART 2 - EXECUTION 3.1 GROUNDING SYSTEM A. Provide separate grounding conductor in all raceways. B. Provide separate grounding jumper from the grounding screw of all receptacle devices to the metallic box in which mounted. Jumper may attach to box with a separate grounding screw or clip device. Jumpers may be eliminated if approved self-grounding devices are used. C. Provide separate bonding conductor, bare copper, for runs of flexible conduit where required by NEC. D. All conductors used for grounding and bonding purposes shall be copper, insulated green, only. E. All ground busses used in distribution equipment and panels shall be copper. 3.2 EMERGENCY EQUIPMENT A. Paint red using enamel spray paint for the following: J-boxes, coverplates, panelboards, loadcenters, safety switches, and transformers. END OF SECTION Weld County

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23 SECTION STATIC UNINTERRUPTIBLE POWER SUPPLY PART 1 - GENERAL 1.1 SUMMARY A. Scope: Provide design and engineering, labor, material, equipment, related services, and supervision required, including, but not limited to, manufacturing, fabrication, erection, and installation for a static uninterruptible power supply (UPS) as required for the complete performance of the work and as shown on the Drawings and as herein specified. B. Section Includes: The work specified in this Section includes, but shall not be limited to, a continuous duty, three-phase, solid state, on-line double conversion static UPS. 1. The UPS shall utilize a rack-mounted N+1 redundant, scalable array architecture. The UPS shall be ENERGY STAR qualified. The system power train shall be comprised of 10 kva/10 kw power modules and shall be capable of being configured for N+X redundant operation at the rated system load. UPS shall facilitate the replacement of swappable power modules in less than ten minutes. Each 10 kva/10 kw power module shall contain a fully rated input rectifier/boost converter hereafter referred to as the input converter, a fully rated output inverter, and battery charging circuit. The system shall also be comprised of a continuous duty bypass static switch module that can be swapped by trained personnel, battery modules that can be swapped by trained personnel, redundant control modules, redundant logic power supplies, and LCD interface/display. All of the above system components shall be housed in standard 600 mm wide by 1070 mm deep by 2000 mm high cabinets. 2. In addition, this Section describes the performance, functionality, and design of the power distribution unit, hereafter referred to as the PDU, and the battery system. 3. The UPS and associated equipment shall operate in conjunction with a primary power supply and an output distribution system to provide quality uninterrupted power for mission critical, electronic equipment load. 4. All programming and miscellaneous components for a fully operational system as described in this Section shall be available as part of the UPS. 1.2 REFERENCES A. General: The publications listed below form a part of this Specification to the extent referenced. The publications are referred to in the text by the basic designation only. The edition/revision of the referenced publications shall be the latest date as of the date of the Contract Documents, unless otherwise specified. Weld County

24 B. Institute of Electrical and Electronics Engineers, Inc. (IEEE): 1. ANSI/IEEE 519, "Guide for Harmonic Control and Reactive Compensation of Static Power Converters" (copyrighted by IEEE, ANSI approved). C. International Organization for Standardization (ISO): 1. ISO 9001, "Quality Management Systems - Requirements." 2. ISO 14001, Environmental Management Systems - Requirements with Guidance for Use. D. Underwriters Laboratories, Inc. (UL): 1. UL 1778 second Edition, "Standard for Uninterruptible Power Supply Equipment" (copyrighted by UL, ANSI approved). 2. UL , Standard for Information Technology Equipment. E. International Electrotechnical Commission (IEC) 1. IEC , Electromagnetic Compatibility - Testing and Measurement Techniques; Electrostatic Discharge Immunity Test. 2. IEC , Electromagnetic Compatibility - Testing and Measurement Techniques; Radiated, Radio Frequency, Electromagnetic Field Immunity Test. 3. IEC , Electromagnetic Compatibility - Testing and Measurement Techniques; Electrical Fast Transient/Burst Immunity Test. 4. IEC , Electromagnetic Compatibility - Testing and Measurement Techniques; Surge Immunity Test. 5. IEC , Uninterruptible Power Systems - Electromagnetic Compatibility (EMC) Requirements, 6. IEC , Uninterruptible Power Systems - Method of Specifying the Performance and Test Requirements. F. CSA: 1. C22.2 no M95, General Use Power Supplies , Information Technology Equipment - Safety - Part 1: General Requirements. G. EMC: 1. FCC part 15 Class A. 1.3 SYSTEM DESCRIPTION A. Design Requirements: 1. The UPS shall be sized for 70 kva and 70 kw load. 2. The UPS battery shall be sized for 70 kw at a power factor of 1.0 for 20 minutes. 20 minutes runtime will require a separate battery cabinet. Weld County

25 B. System Characteristics: 1. System Capacity: The system shall be rated for full kw output in the following frame sizes: a. 100 kva/kw, can be configured with up to ten, 10 kw power modules for 100 kw or 90 kw N Input: The system input shall be configurable as either single or dual mains derived from a three phase wye source. Standard cable entry shall be through the top. Bottom cable entry shall also be facilitated. Depending on the specific configuration, the use of the optional side car may be required. a. AC Input Nominal Voltage: 208 Y/120 V three-phase, 4-wires plus ground, 60 Hz. b. AC Input Voltage Window: 1) ±15% for full performance (177 to 239 volts). c. Short Circuit Withstand Rating: 30,000 symmetrical amperes. d. Maximum Frequency Range: 40 to 70 hertz. e. Input Power Factor: 1) Greater than 0.99 with load at 25% 2) Greater than 0.95 with loads above 15% 3) Greater than 0.90 with loads above 10% f. Input Current Distortion With No Additional Filters: Less than 5 percent at full load. 3. UPS Output: a. AC Output Nominal Output: 208 Y/120 V, 4-wires plus ground, 60 Hz. b. AC Output Voltage Distortion: Less than 2% at 100% linear load, less than 6.5% for non-linear load as defined by IEC/EN c. AC Output Voltage Regulation: ±1% for 100% linear or non-linear load. d. Voltage Transient Response: ±5% maximum RMS change in a half cycle at load step 0% to 100% or 100% to 0%. e. Voltage Transient Recovery: Within less than 50 milliseconds. f. Output Voltage Harmonic Distortion: Less than 2% THD maximum and 1% single harmonic for a 100% linear load. g. Overload Capabilities: 1) Normal Operation: a) 150% for 30 seconds before transfer to bypass. 2) Battery Operation: 150% for 30 seconds. 3) Bypass Operation: a) 125% continuous at 208 V b) 1000% for 100 milliseconds. h. UPS efficiency: 1) ENERGY STAR qualified system efficiency in double conversion mode: a) 100% load: 94.7% efficient b) 75% load: 94.9% efficient c) 50% load: 94.8% efficient d) 25% load: 93.2% efficient i. Output Power Factor Rating: 0.5 leading to 0.5 lagging without any derating. Weld County

26 1.4 SUBMITTALS A. Product Data: Submit product data showing material proposed. Submit sufficient information to determine compliance with the Drawings and Specifications. Product data shall include, but shall not be limited to, the following: 1. As bid system bill of materials. 2. Product catalog sheets or equipment brochures. 3. Product guide specifications. B. Shop Drawings: Submit shop drawings for each product and accessory required. Include information not fully detailed in manufacturer s standard product data, including, but not limited to, the following: 1. Installation information, including, but not limited to, weights and dimensions. 2. Information about terminal locations for power and control connections. 3. Drawings for requested optional accessories. C. Wiring Diagrams: Submit wiring diagrams detailing power, signal, and control systems, clearly differentiating between manufacturer-installed wiring and fieldinstalled wiring, and between components provided by the manufacturer and those provided by others. 1. Submit system single-line operation diagram. D. Operation and Maintenance Data: Submit operation and maintenance data to include in operation and maintenance manuals including, but not limited to, safe and correct operation of UPS functions. 1. Submit an installation manual, which shall include, but shall not be limited to, instructions for storage, handling, examination, preparation, installation, and start-up of UPS. 2. Submit an operation and maintenance manual, which shall include, but shall not be limited to, operating instructions. 1.5 QUALITY ASSURANCE A. Qualifications: 1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of solid state UPS of types and sizes required, and whose products have been in satisfactory use in similar service for a minimum of 20 years. a. The manufacturer shall be ISO 9001 certified and shall be designed to internationally accepted standards. 2. Installer Qualifications: Installer shall be a firm that shall have a minimum of five years of successful installation experience with projects utilizing solid state UPS similar in type and scope to that required for this Project. B. Regulatory Requirements: Comply with applicable requirements of the laws, codes, Weld County

27 ordinances, and regulations of Federal, State, and local authorities having jurisdiction. Obtain necessary approvals from such authorities. 1. Work shall also be designed in accordance with the following: a. UL th edition b. UL Where applicable, the UPS shall also be designed in accordance with publications from the following organizations and committees: a. National Fire Protection Association (NFPA). b. National Electrical Manufacturers Association (NEMA). c. Occupational Safety and Health Administration (OSHA). d. Institute of Electrical and Electronics Engineers, Inc. (IEEE); ANSI/IEEE 519. e. ISO 9001 f. ISO g. FCC h. ENERGY STAR 1.6 DELIVERY, STORAGE, AND HANDLING A. Deliver materials to the Project site in supplier s or manufacturer s original wrappings and containers, labeled with supplier s or manufacturer s name, material or product brand name, and lot number, if any. B. Store materials in their original, undamaged packages and containers, inside a well ventilated area protected from weather, moisture, soiling, extreme temperatures, and humidity. 1.7 PROJECT CONDITIONS A. Environmental Requirements: Do not install the UPS until space is enclosed and weatherproof, wet work in space is completed and nominally dry, work above ceilings is complete, and ambient temperature and humidity conditions are and will be continuously maintained at values near those indicated for final occupancy. 1. Environmental: a. Storage Ambient Temperature: 5 F (-15 C) to 104 F (40 C). b. Operating Ambient Temperature: 32 to 104 F (0 to 40 C) (77 F [25 C] shall be ideal for most battery types). c. Relative Humidity: 0% to 95% non-condensing. d. Altitude: Maximum installation with no derating of the UPS output shall be 3280 feet (1000 m) above sea level. The UPS capacity shall be derated for altitude as follows: 1) 6000 feet (2000 m), 91% load. e. Audible Noise (As Measured 3 Feet From Surface): 1) 60 dba at 70% load. 2) 67 dba at 100% load. 1.8 WARRANTY A. Special Warranty: The Contractor shall warrant the work of this Section to be in Weld County

28 accordance with the Contract Documents and free from faults and defects in materials and workmanship for period indicated below. This special warranty shall extend the one year period of limitations contained in the General Conditions. The special warranty shall be countersigned by the Installer and the manufacturer. 1. The UPS shall be covered by a full parts and labor warranty from the manufacturer for a period of 12 months from date of installation or acceptance by the Owner or 18 months from date of shipment from the manufacturer, whichever occurs first. B. Additional Owner Rights: The warranty shall not deprive the Owner of other rights the Owner may have under other provisions of the Contract Documents and shall be in addition to and run concurrent with other warranties made by the Contractor under requirements of the Contract Documents. 1.9 MAINTENANCE A. A complete offering of preventative and full service maintenance contracts for the UPS system and the battery system shall be available from the manufacturer. Contract work shall be performed by factory-trained service personnel. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Basis of Design: Product specified is APC Symmetra PX 100 kw as manufactured by Schneider Electric. Items specified are to establish a standard of quality for design, function, materials, and appearance. 2.2 MODES OF OPERATION A. Normal: The Input converter and output inverter shall operate in an on-line manner to continuously regulate power to the critical load. The input and output converters shall be capable of full battery recharge while simultaneously providing regulated power to the load for all line and load conditions within the range of the UPS specifications. B. Battery: Upon failure of the AC input source, the critical load shall continue being supplied by the output inverter, which shall derive its power from the battery system. There shall be no interruption in power to the critical load during both transfers to battery operation and retransfers from battery to normal operation. C. Recharge: Upon restoration of utility power to the UPS input, the input converter and output inverter shall simultaneously recharge the battery and provide regulated power to the critical load. D. Static Bypass: The static bypass shall be used to provide controller transfer of critical load from the inverter output to the bypass source. This transfer, along with its retransfer, shall take place with no power interruption to the critical load. In the event of an emergency, this transfer shall be an automatic function. Weld County

29 E. Maintenance Bypass: The system shall be equipped with an external make-beforebreak maintenance bypass cabinet (MBC) to electrically isolate the UPS during routine maintenance and service of the UPS. The MBC shall allow for the completely electrical isolation of the UPS. 2.3 INPUT CONVERTER A. General: The Input converters of the system shall be housed within the removable power modules, and shall constantly control the power imported from the mains input of the system, to provide the necessary UPS power for precise regulation of the DC bus voltage, battery charging, and main inverter regulated output power. B. Input Current Total Harmonic Distortion: The input current THDI shall be held to less than 5% at full system load, while providing conditioned power to the critical load bus, and charging the batteries under steady-state operating conditions. This shall be true while supporting both a linear or non-linear load. This shall be accomplished without the requirement for additional filters, magnetic devices, or other components. C. Soft-Start Operation: As a standard feature, the UPS shall contain a user-adjustable soft-start, capable of limiting the input current from 0% to 100% of the input over a default 10 second period, when returning to the AC utility source from battery operation. The change in current over the change in time shall take place in a linear manner throughout the entire operation. D. Magnetization Inrush Current: The UPS shall exhibit zero inrush current as a standard product. If provided with an optional isolation transformer, inrush should be limited to 11 times the nominal input current of the transformer. E. Input Current Limit: 1. The Input converter shall control and limit the input current draw from utility to 130% of the rated UPS output. During conditions where input current limit is active, the UPS shall be able to support 100% load, charge batteries at 10% of the UPS output rating, and provide voltage regulation with mains deviation +15/- 5%. F. Redundancy: The UPS shall be capable of being configured with redundant Input converters, each with semiconductor fusing, and logic-controlled contactors to isolate a failed module from the input bus. G. Backfeed Protection: The above mentioned logic-controlled contactor shall also provide the backfeed protection required by UL 1778, CSA 22.2, and IEC/EN Standards. H. Charging: 1. The battery charging shall keep the DC bus float voltage of nominal ±218 volts, ±1%. 2. The battery charging circuit shall contain a temperature compensation circuit, which shall regulate the battery charging to optimize battery life. Weld County

30 3. The battery charging circuit shall remain active when in static bypass and in normal operation. 4. Maximum charging power: 10% of output power rating or a maximum charge current of 0.25 CA. 2.4 OUTPUT INVERTER A. General: The UPS output inverter shall constantly develop the UPS output voltage waveform by converting the DC bus voltage to AC voltage through a set of semiconductor driven power converters. In both normal operation and battery operation, the output inverters shall create an output voltage independent of the mains input voltage. Input voltage anomalies such as brown-outs, spikes, surges, sags, and outages shall not affect the amplitude or sinusoidal nature of the output voltage sine wave of the inverters. B. Overload Capability: Steady-state overload conditions, of up to 150% of system capacity shall be sustained by the inverter for 30 seconds in normal and battery operation. Should overloads persist past the outlined time limitation, the critical load shall be switched to the automatic static bypass output of the UPS. C. Output Contactor: The output inverter shall be provided with an output mechanical contactor to provide physical isolation of the inverter from the critical bus. With this feature a failed inverter shall be isolated from the critical bus. D. Battery Protection: The inverter shall be provided with monitoring and control circuits to limit the level of discharge on the battery system. E. Redundancy: The UPS shall be capable of being configured with redundant output inverters, each with semiconductor fusing, and logic-controlled contactors to remove a failed component from the input, DC, and output critical bus. 2.5 STATIC BYPASS A. General: As part of the UPS, a system static bypass cabinet shall be provided. The system static bypass shall provide no break transfer of the critical load from the inverter output to the static bypass input source during times where maintenance is required, or the inverter cannot support the critical bus. Such times may be due to prolonged or severe overloads, or UPS failure. The UPS and static bypass switch shall constantly monitor the auxiliary contacts of their respective circuit breakers, as well as the bypass source voltage, and inhibit potentially unsuccessful transfers to static bypass from taking place. B. Design: The design of the static switch power path shall consist of silicon-controlled rectifiers (SCR) with a continuous duty rating of 125% of the UPS output rating. C. Automatic Transfers: An automatic transfer of load to static bypass shall take place whenever the load on the critical bus exceeds the overload rating of the UPS. Automatic transfers of the critical load from static bypass back to normal operation shall take place when the overload condition is removed from the critical output bus of the system. Automatic transfers of load to static bypass shall also take place if for any reason the Weld County

31 UPS cannot support the critical bus. D. Manual Transfers: Manually initiated transfers to and from static bypass shall be initiated through the UPS display interface. E. Overloads: The static bypass shall be capable of handling overloads equal to or less than 125% of the rated system output continuously. For instantaneous overloads caused by inrush current from magnetic devices, or short circuit conditions, the static bypass shall be capable of sustaining overloads of 1000% of system capacity for periods of up to 100 milliseconds. F. Modular: The static bypass switch shall be of a modular design. G. System Protection: As a requirement of UL 1778, backfeed protection in the static bypass circuit shall also be incorporated in the system design. To achieve backfeed protection, a mechanical contactor in series with the bypass SCR(s) shall be controlled by the UPS/static switch, to open immediately upon sensing a condition where backfeeding of the static switch by any source connected to the critical output bus of the system is occurring. One such condition could be a result of a shorted SCR. 2.6 DISPLAY AND CONTROLS A. Control Logic: The UPS shall be controlled by two fully redundant intelligence modules (IM) that can be swapped by trained personnel. These modules shall have separate, optically isolated, communication paths to the power and static switch modules. Logic power for the control modules shall be derived from redundant power supplies, each having a separate AC and DC input and output. The communication of the control modules shall be of controller area network (CAN Bus). B. Display unit: A microprocessor-controlled display unit shall be located on a hinged door in front of the system. The display shall consist of an alphanumeric display with backlight, four LEDs for quick status overview, and a keypad consisting of pushbutton switches. C. Metered Data: The following data shall be available on the alphanumeric display: 1. Year, month, day, hour, minute, second of occurring events. 2. Source input voltage Output AC voltage. Output AC current. 5. Input frequency. 6. Battery voltage. D. Event Log: The display unit shall allow trained personnel to display a time and date stamped log. E. Alarms: The display unit shall allow the Owner to display a log of active alarms. The following minimum set of alarm conditions shall be available: 1. Input frequency outside configured range. 2. AC adequate for UPS but not for bypass. Weld County