|
SECTION 26 12 00 - LIQUID-FILLED, MEDIUM-VOLTAGE PAD-MOUNTED TRANSFORMERS
<br />PART 1- GENERAL
<br />1.01 SCOPE
<br />A. This specification covers the electrical and mechanical characteristics of 750-2,500 kVA Three-Phase Step-Down Pad-
<br />Mounted Distribution Transformers.
<br />1.02 APPLICABLE STANDARDS
<br />A. All characteristics, definitions, and terminology, except as specifically covered in this specification, shall be in accordance with
<br />the latest revision of the following IEEE®, Department of Energy, and NEMA® standards.
<br />1. IEEE Std C57.12.00™-2015 – IEEE Standard for Standard General Requirements for Liquid-Immersed Distribution,
<br />Power, and Regulating Transformers
<br />2. IEEE Std C57.12.28™ - 2014 standard – Pad-Mounted Equipment - Enclosure Integrity.
<br />3. IEEE Std C57.12.29™ - 2014 standard - IEEE Standard for Pad-Mounted Equipment - Enclosure Integrity for Coastal
<br />Environments – applicable when stainless steel construction is specified.
<br />4. IEEE Std C57.12.34™-2015 standard – Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled,
<br />Three-Phase Distribution Transformers (2500 kVA and Smaller) - High Voltage: 34500GrdY/19920 Volts and Below; Low-
<br />Voltage: 480 Volt 2500 kVA and Smaller (issued in March 2005 - combines IEEE Std C57.12.22 and IEEE Std C57.12.26
<br />standards).
<br />5. IEEE Std C57.12.90™-2010 – IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating
<br />Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power Transformers
<br />6. IEEE Std C57.12.91™-2011 standard – Guide for Loading Mineral-Oil-Immersed Transformers.
<br />7. IEEE Std C57.154™ -2012 – IEEE Standard for the Design, Testing, and Application of Liquid-Immersed Distribution,
<br />Power, and Regulating Transformers Using High-Temperature Insulation Systems and Operating at Elevated Temperatures
<br />8. NEMA® TR 1-1993 (R2000) – Transformers, Regulators and Reactors, Table 0-2 Audible Sound Levels
<br />9. NEMA 260-1996 (2004) – Safety Labels for Pad-Mounted Switchgear and Transformers Sited in Public Areas.
<br />10. 10 CFR Part 431 – Department of Energy–Energy Conservation Program: Energy Conservation Standards for Distribution
<br />Transformers; Final Rule
<br />11. IEEE Std 386™-2016 – IEEE Standard for Separable Insulated Connector Systems for Power Distribution Systems Above
<br />600 V
<br />PART 2 EXECUTION
<br />2.01 PRODUCTION TESTING
<br />A. All units shall be tested for the following:
<br />1. No-Load (85 °C or 20 °C) losses at rated current
<br />2. Total (85 °C) losses at rated current
<br />3. Percent Impedance (85 °C) at rated current
<br />4. Excitation current (100% voltage) test
<br />5. Winding resistance measurement tests
<br />6. Ratio tests using all tap settings
<br />7. Polarity and phase relation tests
<br />8. Induced potential tests
<br />9. Full wave and reduced wave impulse test
<br />B. Transformers shall conform to efficiency levels for liquid immersed distribution transformers, as specified in the Department of
<br />Energy ruling “10 CFR Part 431 Energy Conservation Program: Energy Conservation Standards for Distribution Transformers;
<br />Final Rule; April 18, 2013.” Manufacturer shall comply with the intent of all regulations set forth in noted ruling.
<br />C. In addition, the manufacturer shall provide certification upon request for all design and other tests listed in IEEE Std C57.12.00
<br />™-2010 standard, including verification that the design has passed short circuit criteria per IEEE Std C57.12.00™-2010 standard
<br />and IEEE Std C57.12.90™-2010 standard.
<br />2.02 SHIPPING
<br />A. Transformers, 1000 kVA and below, shall be palletized. Transformers, 1500 kVA and larger, shall be loaded and unloaded
<br />with overhead cranes, so a pallet is not to be prov ided for these transformers.
<br />2.03 DATA WITH PROPOSAL
<br />A. The following data shall be submitted with the proposal:
<br />1. Core losses
<br />2. Winding losses
<br />3. Percent Impedance
<br />4. Typical bid drawing
<br />5. Approval drawing – drawings shall show final dimensions and features. When requested, approval drawings shall be
<br />provided per quoted leadtime.
<br />6. Record Drawing – drawings shall show final dimensions and features. When requested, record drawings shall be
<br />provided.
<br />2.04 SERVICE
<br />A. The manufacturer of the transformer shall have regional service centers located within two (2) hours flight time of all
<br />contiguous 48 states. Service personnel shall be factory trained in commissioning and routine service of quoted transformers.
<br />END OF SECTION 26 12 19.01
<br />SECTION 26 13 13 - MEDIUM-VOLTAGE SWITCHGEAR
<br />PART 1 - GENERAL
<br />1.1 SCOPE
<br />A. This section includes medium-voltage, load-interrupter switchgear and its associated auxiliary equipment. The equipment shall
<br />consist of outdoor-non-walk-in type 3R switchgear.
<br />B. The switchgear shall use resettable interrupter controls and shall not rely on fuses for overcurrent protection.
<br />1.2 RELATED DOCUMENTS
<br />A. Drawings and general provisions of the Contract, including General and Supplementary Conditions apply to this Section.
<br />1.3 SUBMITTALS
<br />A. Submit shop drawings for approval and final documentation in the quantities listed according to the Conditions of the Contract. All
<br />transmittals shall be identified by purchaser name, purchaser location and purchaser’s order number.
<br />B. Approval documents shall include:
<br />1. General arrangement drawing showing dimensioned elevation and floor plan, foundation details and one-line diagram
<br />2. Panel arrangement drawing showing layout of devices on the panel doors
<br />3. Single-line diagrams
<br />4. Schematics
<br />5. Nameplate engraving drawings
<br />6. Electrical bill of material.
<br />C. Final documents shall include:
<br />1. Documents listed in 1.3.B above
<br />2. Wiring diagrams
<br />3. Recommended spare parts list for start-up support
<br />4. Instruction manual.
<br />D. Where applicable or required by the Engineer, the following additional information shall be submitted to the Engineer:
<br />1. Connection details between close-coupled assemblies
<br />2. Composite floor plan of close-coupled assemblies
<br />3. Key interlock scheme description and sequence of operations.
<br />1.4 QUALITY ASSURANCE
<br />A. Manufacturer qualifications: The bidder must have at least five years experience in manufacturing medium-voltage switchgear.
<br />B. Comply with requirements of latest revisions of applicable industry standards, specifically including the following:
<br />1. ANSI/IEEE C37.20.3
<br />2. ANSI/IEEE C37.20.4
<br />3. ANSI C37.57
<br />4. ANSI C37.58
<br />5. CSA 22.2 No.31-2010
<br />6. CSA 22.2 No.58 – M1989
<br />7. CSA 22.2 No.193 – M1989
<br />C. Listing by Underwriters Laboratories (UL or C-UL) or Canadian Standards Association (CSA) shall be provided for 15kV, 25kV or
<br />35kV class load-interrupter switchgear.
<br />D. The manufacturer shall be ISO9001 or 9002 certified for the equipment specified herein.
<br />1.5 DELIVERY, STORAGE AND HANDLING
<br />A. Deliver in convenient shipping groups. Shipping groups shall not exceed 15 feet in length.
<br />B. Bus bars with associated hardware for connections between shipping groups shall be shipped inside one of the units in which it
<br />shall be installed.
<br />C. Contractor shall store the equipment in accordance with manufacturer’s recommendations.
<br />D. Contractor shall install temporary heaters, if necessary, to prevent condensation during storage.
<br />E. Contractor shall handle and move the switchgear in accordance with manufacturer’s recommendations.
<br />PART 2 - PRODUCTS
<br />2.1 IDENTIFICATION
<br />A. All nameplates shall be mounted on the front door of each vertical section as specified on the drawing.
<br />PART 3 - EXECUTION
<br />3.1 INSTALLATION.
<br />A. General: Electrical contractor or switchgear installer shall install switchgear in accordance with manufacturer’s written instructions
<br />and the following specifications.
<br />3.2 ADJUSTMENTS AND CLEANING
<br />A. Remove debris from switchgear and wipe dust and dirt from all components.
<br />B. Repaint marred and scratched surfaces with touch-up paint to match original finish.
<br />3.3 INSPECTION
<br />A. Check tightness of all accessible mechanical and electrical connections to assure they are torqued to the minimum acceptable
<br />manufacturer’s recommendations.
<br />B. Check all installed switchgear for proper grounding, fastening and alignment.
<br />3.4 FIELD QUALITY CONTROL
<br />A. Field inspection and testing shall be performed by the installing contractor.
<br />B. Visually inspect for physical damage.
<br />C. Perform site tests as specified in manufacturer’s instruction manual.
<br />D. Touch-up paint to repair any damaged surfaces using manufacturer-furnished paint. Leave remaining touch-up paint with owner.
<br />E. Verify operation of interlocks.
<br />F. Perform power-frequency withstand voltage tests in accordance with IEEE Std. C37.20.3-2013, clause 6.19.
<br />3.5 WARRANTY
<br />A. Equipment manufacturer shall warrant that all goods supplied are free of non-conformities in workmanship and materials for one
<br />year from date of initial operation, but not more than 18 months from date of shipment.
<br />3.6 START-UP SERVICE
<br />A. Switchgear manufacturer shall provide a factory-authorized service representative for a period of two days to train Owner's
<br />maintenance personnel in the following:
<br />1. Procedures and schedules related to startup and shutdown, troubleshooting, servicing and preventive maintenance.
<br />2. Review data in the instruction manuals.
<br />3. Schedule training with Owner with at least three week’s advance notice.
<br />3.7 FIELD SERVICE
<br />A. The manufacturer of the transformer shall have regional service centers located within two (2) hours flight time of all contiguous
<br />48 states. Service personnel shall be factory trained in commissioning and routine service of quoted transformers.
<br />END OF SECTION 26 13 13
<br />SECTION 26 24 13 – SWITCHBOARDS
<br />PART 1 - GENERAL
<br />1.1 RELATED DOCUMENTS
<br />A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification
<br />Sections, apply to this Section.
<br />1.2 SUMMARY
<br />A. Section Includes:
<br />1. Service and distribution switchboards rated 600 V and less.
<br />2. Surge protection devices.
<br />3. Disconnecting and overcurrent protective devices.
<br />4. Identification.
<br />1.3 QUALITY ASSURANCE
<br />A. Installer Qualifications: An employer of workers qualified as defined in NEMA PB 2.1 and trained in electrical safety as required by
<br />NFPA 70E.
<br />B. Testing Agency Qualifications: Accredited by NETA.
<br />1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing.
<br />1.4 STORAGE, AND HANDLING
<br />A. Remove loose packing and flammable materials from inside switchboards and to prevent condensation.
<br />B. Handle and prepare switchboards for installation according to NECA 400.
<br />1.5 FIELD CONDITIONS
<br />A. Installation Pathway: Remove and replace access fencing, doors, lift-out panels, and structures to provide pathway for moving
<br />switchboards into place.
<br />B. Environmental Limitations:
<br />1. Do not deliver or install switchboards until spaces are enclosed and weathertight, wet work in spaces is complete and dry, work
<br />above switchboards is complete, and HVAC system is operating and maintaining ambient temperature and humidity conditions at
<br />occupancy levels during the remainder of the construction period.
<br />2. Rate equipment for continuous operation under the following conditions unless otherwise indicated:
<br />a. Ambient Temperature: Not exceeding 104 deg F.
<br />b. Altitude: Not exceeding 6600 feet.
<br />C. Unusual Service Conditions: NEMA PB 2, as follows:
<br />1. Ambient temperatures within limits specified.
<br />2. Altitude not exceeding 6600 feet.
<br />D. Interruption of Existing Electric Service: Do not interrupt electric service to facilities occupied by Owner or others unless permitted
<br />under the following conditions and then only after arranging to provide temporary electric service according to requirements indicated:
<br />1. Notify Architect Construction Manager Owner no fewer than seven days in advance of proposed interruption of electric service.
<br />2. Indicate method of providing temporary electric service.
<br />3. Do not proceed with interruption of electric serv ice without Architect's Construction Manager's Owner's written permission.
<br />4. Comply with NFPA 70E.
<br />1.6 COORDINATION
<br />A. Coordinate layout and installation of switchboards and components with other construction that penetrates walls or is supported by
<br />them, including electrical and other types of equipment, raceways, piping, encumbrances to workspace clearance requirements, and
<br />adjacent surfaces. Maintain required workspace clearances and required clearances for equipment access doors and panels.
<br />B. Coordinate sizes and locations of concrete bases with actual equipment provided. Cast anchor-bolt inserts into bases. Concrete,
<br />reinforcement, and formwork requirements are specified with concrete.
<br />PART 2 - PRODUCTS
<br />2.1 IDENTIFICATION
<br />A. Coordinate mimic-bus segments with devices in switchboard sections to which they are applied. Produce a concise visual
<br />presentation of principal switchboard components and connections.
<br />B. Presentation Media: Painted graphics in color contrasting with background color to represent bus and components, complete with
<br />lettered designations.
<br />C. Service Equipment Label: NRTL labeled for use as service equipment for switchboards with one or more service disconnecting and
<br />overcurrent protective devices.
<br />PART 3 - EXECUTION
<br />3.1 EXAMINATION
<br />A. Receive, inspect, handle, and store switchboards according to NECA 400.
<br />1. Lift or move panelboards with spreader bars and manufacturer-supplied lifting straps following manufacturer's instructions.
<br />2. Use rollers, slings, or other manufacturer-approved methods if lifting straps are not furnished.
<br />3. Protect from moisture, dust, dirt, and debris during storage and installation.
<br />4. Install temporary heating during storage per manufacturer's instructions.
<br />B. Examine switchboards before installation. Reject switchboards that are moisture damaged or physically damaged.
<br />C. Examine elements and surfaces to receive switchboards for compliance with installation tolerances and other conditions affecting
<br />performance of the Work or that affect the performance of the equipment.
<br />D. Proceed with installation only after unsatisfactory conditions have been corrected.
<br />3.2 INSTALLATION
<br />A. Install switchboards and accessories according to NECA 400.
<br />B. Equipment Mounting: Install switchboards on concrete base, 4-inch nominal thickness. Comply with requirements for concrete base
<br />specified in Section 033000 "Cast-in-Place Concrete."
<br />1. Install conduits entering underneath the switchboard, entering under the vertical section where the conductors will terminate.
<br />Install with couplings flush with the concrete base. Extend 2 inches above concrete base after switchboard is anchored in place.
<br />2. Install dowel rods to connect concrete base to concrete floor. Unless otherwise indicated, install dowel rods on 18-inch centers
<br />around the full perimeter of concrete base.
<br />3. For supported equipment, install epoxy-coated anchor bolts that extend through concrete base and anchor into structural
<br />concrete floor.
<br />4. Place and secure anchorage devices. Use setting drawings, templates, diagrams, instructions, and directions furnished with
<br />items to be embedded.
<br />5. Install anchor bolts to elevations required for proper attachment to switchboards.
<br />6. Anchor switchboard to building structure at the top of the switchboard if required or recommended by the manufacturer.
<br />C. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, straps and brackets, and temporary blocking of moving
<br />parts from switchboard units and components.
<br />D. Operating Instructions: Frame and mount the printed basic operating instructions for switchboards, including control and key
<br />interlocking sequences and emergency procedures. Fabricate frame of finished wood or metal and cover instructions with clear acrylic
<br />plastic. Mount on front of switchboards.
<br />E. Install filler plates in unused spaces of panel-mounted sections.
<br />F. Install overcurrent protective devices, surge protection devices, and instrumentation.
<br />1. Set field-adjustable switches and circuit-breaker trip ranges.
<br />G. Comply with NECA 1.
<br />3.3 CONNECTIONS
<br />A. Comply with requirements for terminating feeder bus specified in Section 262500 "Enclosed Bus Assemblies." Drawings indicate
<br />general arrangement of bus, fittings, and specialties.
<br />B. Bond conduits entering underneath the switchboard to the equipment ground bus with a bonding conductor sized per NFPA 70.
<br />C. Support and secure conductors within the switchboard according to NFPA 70.
<br />D. Extend insulated equipment grounding cable to busway ground connection and support cable at intervals in vertical run.
<br />3.4 IDENTIFICATION
<br />A. Identify field-installed conductors, interconnecting wiring, and components; provide warning signs complying with requirements for
<br />identification specified in Section 260553 "Identification for Electrical Systems."
<br />B. Switchboard Nameplates: Label each switchboard compartment with a phenolic nameplate displaying the fixture code as shown in
<br />the construction documents.
<br />C. Device Nameplates: Label each disconnecting and overcurrent protective device and each meter and control device mounted in
<br />compartment doors with a phenolic nameplate displaying the fixture code as shown in the construction documents.
<br />END OF SECTION 26 24 13
<br />SECTION 26 28 16 - ENCLOSED SWITCHES AND CIRCUIT BREAKERS
<br />PART 1 - GENERAL
<br />1.1 RELATED DOCUMENTS
<br />A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01
<br />Specification Sections, apply to this Section.
<br />1.2 SUMMARY
<br />A. Section Includes:
<br />1. Nonfusible switches.
<br />2. Shunt trip switches.
<br />3. Molded-case circuit breakers (MCCBs).
<br />4. Molded-case switches.
<br />5. Enclosures.
<br />1.3 DEFINITIONS
<br />A. NC: Normally closed.
<br />B. NO: Normally open.
<br />C. SPDT: Single pole, double throw.
<br />PART 2 - EXECUTION
<br />2.1 EXAMINATION
<br />A. Examine elements and surfaces to receive enclosed switches and circuit breakers for compliance with installation tolerances and
<br />other conditions affecting performance of the Work.
<br />B. Proceed with installation only after unsatisfactory conditions have been corrected.
<br />1. Commencement of work shall indicate Installer's acceptance of the areas and conditions as satisfactory.
<br />2.2 PREPARATION
<br />A. Interruption of Existing Electric Service: Do not interrupt electric service to facilities occupied by Owner or others unless permitted
<br />under the following conditions and then only after arranging to provide temporary electric service according to requirements indicated:
<br />1. Notify Architect Construction Manager Owner no fewer than seven days in advance of proposed interruption of electric service.
<br />2. Indicate method of providing temporary electric service.
<br />3. Do not proceed with interruption of electric serv ice without Architect's Construction Manager's Owner's written permission.
<br />4. Comply with NFPA 70E.
<br />2.3 ENCLOSURE ENVIRONMENTAL RATING APPLICATIONS
<br />A. Enclosed Switches and Circuit Breakers: Provide enclosures at installed locations with the following environmental ratings.
<br />1. Indoor, Dry and Clean Locations: NEMA 250, Type 1.
<br />2. Outdoor Locations: NEMA 250, Type 3R.
<br />2.4 INSTALLATION
<br />A. Coordinate layout and installation of switches, circuit breakers, and components with equipment serv ed and adjacent surfaces.
<br />Maintain required workspace clearances and required clearances for equipment access doors and panels.
<br />B. Install individual wall-mounted switches and circuit breakers with tops at uniform height unless otherwise indicated.
<br />C. Temporary Lifting Provisions: Remove temporary lifting of eyes, channels, and brackets and temporary blocking of moving parts
<br />from enclosures and components.
<br />D. Install fuses in fusible devices.
<br />E. Comply with NFPA 70 and NECA 1.
<br />2.5 IDENTIFICATION
<br />A. Identify field-installed conductors, interconnecting wiring, and components; provide warning signs.
<br />B. Label each enclosure with engraved metal or laminated-plastic nameplate.
<br />2.6 ADJUSTING
<br />A. Adjust moving parts and operable components to function smoothly, and lubricate as recommended by manufacturer.
<br />B. Set field-adjustable circuit-breaker trip ranges as specified in "Coordination Studies."
<br />END OF SECTION 26 28 16
<br />448 South Hill Street
<br />Suite 1001
<br />Los Angeles, CA 90013
<br />Phone: 310-975-2061
<br />Reviewed By:Proj #:
<br />140 Newport Center Drive,
<br />Suite 100
<br />Newport Beach, CA 92660
<br />O: 949.478.8800
<br />www.kpff.com
<br />KPFF
<br />04
<br />/
<br />1
<br />7
<br />/
<br />2
<br />0
<br />2
<br />5
<br />
<br />4
<br />:
<br />4
<br />3
<br />:
<br />2
<br />8
<br />
<br />P
<br />M
<br />
<br />A
<br />u
<br />t
<br />o
<br />d
<br />e
<br />s
<br />k
<br />
<br />D
<br />o
<br />c
<br />s
<br />:
<br />/
<br />/
<br />D
<br />L
<br />X
<br />8
<br />/
<br />D
<br />L
<br />X
<br />8
<br />_
<br />M
<br />E
<br />P
<br />.
<br />rv
<br />t
<br />EV9.03
<br />SPECIFICATIONS -
<br />ELECTRICAL
<br />DLX8_EVSG
<br />515 E Dyer Rd, Santa Ana, CA 92707
<br />Owner
<br />NM23.0003320.000
<br />1416 NW 46TH Street
<br />Suite 105-138
<br />Seattle, WA 98107
<br />WWW.NELSONWORLDWIDE.COM
<br />Phone: (206) 408-8501
<br />Nelco Architecture, Inc.
<br />Issue: No: Date:
<br />CD 30 2023/11/03
<br />CD 50 2024/05/22
<br />CD 90 2025/03/07
<br />Issue for Permit 2025/04/17
<br />2025/04/17
|