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Square D by Schneider Electric LOW VOLTAGE ACTIVE HARMONIC FILTERS THIS GUIDE SPECIFICATION IS WRITTEN IN ACCORDANCE WITH THE CONSTRUCTION SPECIFICATIONS INSTITUTE (CSI) MASTERFORMAT. THIS SECTION MUST BE CAREFULLY REVIEWED AND EDITED BY THE ARCHITECT OR THE ENGINEER TO MEET THE REQUIREMENTS OF THE PROJECT. COORDINATE THIS SECTION WITH OTHER SPECIFICATION SECTIONS IN THE PROJECT MANUAL AND WITH THE DRAWINGS. WHERE REFERENCE IS MADE THROUGHOUT THIS SECTION TO “PROVIDE”, “INSTALL”, “SUBMIT”, ETC., IT SHALL MEAN THAT THE CONTRACTOR, SUBCONTRACTOR, OR CONTRACTOR OF LOWER TIER SHALL “PROVIDE”, “INSTALL”, “SUBMIT”, ETC., UNLESS OTHERWISE INDICATED. THIS SECTION IS WRITTEN TO INCLUDE THE 2004 MASTERFORMAT AND THE 1995 MASTERFORMAT VERSIONS. WHERE APPLICABLE, THESE ITEMS ARE BRACKETED AND, IN EACH CASE, UNLESS OTHERWISE INDICATED, THE FIRST CHOICE APPLIES TO THE 2004 MASTERFORMAT AND THE SECOND CHOICE APPLIES TO THE 1995 MASTERFORMAT. SECTION [26 35 26.11] [16280] LOW VOLTAGE ACTIVE HARMONIC FILTERS PART 1 - GENERAL 1.1 A. 1.2 RELATED DOCUMENTS Drawings and general provisions of the Contract, including General Conditions, [Division 01 - GENERAL REQUIREMENTS] [Division 1 - GENERAL REQUIREMENTS], and other applicable specification sections in the Project Manual apply to the work specified in this Section. 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 low voltage active harmonic filters 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, active harmonic filter as specified herein and as indicated or scheduled on the Drawings. 1.3 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. B. American Bureau of Shipping (ABS): 1. ABS 0001, "Rules for Building and Classing Mobile Offshore Drilling Units (MODU)." 2. ABS 0002, "Rules for Building and Classing Steel Vessels." C. Institute of Electrical and Electronics Engineers, Inc. (IEEE): 1. ANSI/IEEE 519, "Guide for Harmonic Control and Reactive Compensation of Static Power Converters." D. American Society of Civil Engineers (ASCE): 1. ASCE 7, "Minimum Design Loads for Buildings and Other Structures." Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 1 E. ASTM (ASTM): 1. ASTM E 329, "Standard Specification for Agencies Engaged in the Testing and/or Inspection of Materials Used in Construction." F. California Code of Regulations (CCR): 1. CCR Title 24, “California Building Standards Code.” G. Canadian Standards Association (CSA): 1. CSA C.22.2 No. 14, “Industrial Control Equipment.” 2. CSA C.22.2 No. 66, “Specialty Transformers, Industrial Products.” H. International Code Council (ICC): 1. ICC IBC, "International Building Code." I. International Electrotechnical Commission (IEC): 1. IEC 60529, “Degrees of Protection Provided by Enclosures (IP Code).” J. National Electrical Manufacturers Association (NEMA): 1. NEMA 250, "Enclosures for Electrical Equipment (1000 Volts Maximum)" K. National Fire Protection Association (NFPA): 1. NFPA 70, "National Electrical Code" (copyrighted by NFPA, ANSI approved) - hereinafter referred to as NEC. 2. NFPA 70E, "Standard for Electrical Safety Requirements for Employee Workplaces" (copyrighted by NFPA, ANSI approved). 3. NFPA 5000, “Building Construction and Safety Code.” L. Underwriters Laboratories, Inc. (UL): 1. UL 508, "Standard for Industrial Control Equipment." 2. UL 1449, "Standard for Transient Voltage Surge Suppressers." 1.4 SYSTEM DESCRIPTION A. Performance Requirements: 1. General: Active harmonic filter (AHF) shall be defined as a power electronic device consisting of power semiconductors known as insulated gate bipolar transistors (IGBT) that switch into the AC lines to modulate its output to mitigate detrimental harmonic current and correct the displaced reactive current for the power source. a. TDD and THD (V) shall be limited to not more than 5 percent as contributed by the loads at the location of each AHF. b. Displacement power factor (PF) shall be corrected to 0.95 or better at the location of each AHF. 1) Displacement PF shall never go leading. B. Service Conditions: Active harmonic filter shall be suitable for the following conditions: 1. Operating Ambient Temperature Range: 32°F (0 °C) to 104 °F (40 °C) maximum. 2. Maximum Altitude: 3300 feet (1000 m). 3. Humidity: 0 percent to 95 percent, non-condensing. 1.5 SUBMITTALS A. General: See [Section 01 33 00 - SUBMITTAL PROCEDURES] [Section 01300 - SUBMITTALS]. B. Product Data: Submit product data showing material proposed. Submit sufficient information to determine compliance with the Drawings and Specifications. Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 2 C. Shop Drawings: Submit shop drawings for each product and accessory required. Include information not fully detailed in manufacturer’s standard product data. D. Wiring Diagrams: Submit wiring diagrams detailing power, signal, and control systems, clearly differentiating between manufacturer-installed wiring and field-installed wiring, and between components provided by the manufacturer and those provided by others. 1.6 QUALITY ASSURANCE A. Qualifications: 1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of low voltage active harmonic filters of types and sizes required, and whose products have been in satisfactory use in similar service for a minimum of 10 years. 2. Installer Qualifications: Installer shall be a firm that shall have a minimum of five years of successful installation experience with projects utilizing low voltage active harmonic filters similar in type and scope to that required for this Project. 3. Inspecting and Testing Agency Qualifications: To qualify for acceptance, an independent inspecting and testing agency hired by the Contractor or manufacturer to test products shall demonstrate to the Architect/Engineer’s satisfaction that they are qualified according to ASTM E 329 to conduct testing indicated. B. Regulatory Requirements: Comply with applicable requirements of the laws, codes, ordinances, and regulations of Federal, State, and local authorities having jurisdiction. Obtain necessary approvals from such authorities. 1. The complete equipment shall be manufactured per related standards in Article 1.3 - References, and as follows: a. ABS 0001, Rules 4-3-4/7.1. b. ABS 0002, Rules 1-1-4/3.7 and 4-8-3/1.5. C. Electrical Components, Devices, and Accessories: Electrical components, devices, and accessories shall be listed and labeled as defined in NEC, Article 100, by an inspecting and testing agency acceptable to authorities having jurisdiction, and marked for intended use. D. Pre-Installation Conference: Conduct pre-installation conference in accordance with [Section 01 31 19 - PROJECT MEETINGS] [Section 01200 - PROJECT MEETINGS]. Prior to commencing the installation, meet at the Project site to review the material selections, installation procedures, and coordination with other trades. Pre-installation conference shall include, but shall not be limited to, the Contractor, the Installer, and any trade that requires coordination with the work. Date and time of the pre-installation conference shall be acceptable to the Owner and the Architect/Engineer. 1.7 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. 1.8 A. PROJECT CONDITIONS Environmental Requirements: Do not install low voltage active harmonic filters 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. Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 3 1.9 WARRANTY A. General: See [Section 01 77 00 - CLOSEOUT PROCEDURES] [Section 01770 - CLOSEOUT PROCEDURES]. 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. PART 2 - PRODUCTS 2.1 A. 2.2 MANUFACTURERS Basis of Design: Products specified shall be manufactured by Square D by Schneider Electric. Items specified are to establish a standard of quality for design, function, materials, and appearance. Equivalent products by other manufacturers are acceptable. The Architect/Engineer will be the sole judge of the basis of what is equivalent. EQUIPMENT SIZE/RATINGS A. Active harmonic filter (AHF) shall be designed to operate from an input voltage of 380 volts AC to 480 volts AC, plus 10 percent minus 25percent. B. AHF shall be designed to operate with a voltage frequency of 47 hertz to 63 hertz. C. AHF heat losses shall not exceed more than 3.5 percent of the unit kVAR rating. SELECT APPLICABLE AMPERES BELOW. D. AHF amperage output shall be [_____] amperes. Up to 99 units of any size combination shall be able to be paralleled to inject current according to the information received from one set of main current transformers (CT’s). 1. If one unit is stopped or faulted, the remaining units shall adjust the total output so as to attempt to make up for the unit(s) taken off line. 2. AHF that requires master/slave logic or power connections between unit DC buses shall not be acceptable. 3. AHF that turns off all units when one is taken offline is not acceptable. E. AHF shall include, but shall not be limited to, a door interlocked fused disconnect rated at 200,000 AIC (ampere interruption capacity) at rated voltage in every floor standing enclosure. 2.3 A. ACTIVE HARMONIC FILTER UNIT Enclosure: Provisions shall be made for locking disconnects in the off position. Provisions for additional padlocking shall be made by the Owner using an approved lockout/tag-out device. 1. AHF rated equal to or less than 100 amperes shall be provided in NEMA Type 1 [wall mount] [freestanding] enclosure with bottom cable entry. A remote disconnect shall be provided by others. 2. AHF rated more than 100 amperes shall be provided in freestanding NEMA Type 1 enclosures with a door interlocked disconnect. Cable entry shall be from the top only. Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 4 SELECT APPLICABLE ENCLOSURE TYPE FROM TWO SUBPARAGRPHS ABOVE. BELOW MAY BE USED INSTEAD OF TWO SUBPARAGRAPHGS ABOVE. IF BELOW IS RETAINED, DELTE TWO SUBPARAGRAPHS ABOVE 3. B. AHF shall be mounted in NEMA Type 12 enclosures. Enclosures shall be freestanding with provisions for top and bottom entry of cables. A door interlock device shall be provided. Function of AHF: 1. AHF shall monitor the load current utilizing two CT’s mounted on the AC lines for three phase loads. If phase-to-neutral loads are connected (four wire system), three CT’s shall be required. a. AHF shall analyze the content of the load current for harmonics from the 2nd to the 50th harmonic and shall determine the reactive current content representing displacement power factor. 1) AHF shall inject cancellation for every harmonic order from 2nd to 50th order. AHF with designs to inject less than the all harmonic orders are unacceptable. 2) Non-linear loads shall have input line reactors included that are rated 3 percent or higher impedance (inductance). b. AHF shall provide field selection as a harmonic filter or for reactive current correction or both. Dual operation is required for this Project. 2. AHF shall provide for load balancing of AC lines current for harmonic and reactive currents regardless of actual load distribution per phase. 3. . 4. AHF shall have up to 10 minutes of logic ride-through in the event of power loss. 5. AHF shall be designed with a current limiting function to protect the IGBT’s. a. When the current limit level is attained, a message shall be displayed indicating the output capacity is at maximum capacity and the at-maximum capacity relay shall be activated. b. Operation shall continue indefinitely at this level without trip or degradation of AHF. 6. AHF shall have automatic restart capability upon power loss return and fault resets. a. Fault trip limit shall occur after five restarts within a 5 minute period. b. Automatic restart shall occur for the following faults and may include other faults: 1) AC line overvoltage. 2) AC line undervoltage. 3) AC line power loss. 4) AC line phase imbalance, overtemperature, undertemperature, and DC bus overvoltage. 7. Upon occurrence of the fault trip limit, AHF shall stop output current production and lock out restart until the fault is manually cleared. 8. AHF shall incorporate an over-temperature output roll back that shall reduce the total output current to reduce power component heating in order to maintain maximum current correction within the electrical system. 9. AHF shall be compatible with SPD, EMC filters, SCR snubber circuits, and switched mode power supplies (SMPS). C. Seismic Qualifications: 1. A certificate of compliance shall be provided for each size and enclosure type to the seismic provisions of ICC IBC and ASCE 7. 2. The seismic ratings shall meet the site specific requirements of the installed location as determined by ICC IBC, NFPA 5000, CCR Title 24, and ASCE 7. 3. Anchorage, lateral bracing, and mounting guidelines shall be specified with AHF instruction documentation and markings. 4. The manufacturer shall exhibit a seismic qualification label on the equipment stating compliance to these requirements. D. Operator Interface: 1. AHF shall have a door-mounted human machine interface (HMI) with touch screen control rated NEMA 4-12 (IP65), dust-tight and liquid-resistant. Note, HMI is not suitable for outdoor use. 2. HMI shall provide run/stop control from every screen. 3. HMI shall provide an oscilloscope feature to display specific parameters. Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 5 4. 5. 6. 7. 8. 2.4 a. HMI shall display the mains voltage and CT current curves. b. Performance trend curves shall be displayed for load total RMS current, load RMA harmonic current per phase, AHF harmonic current output per phase, AC mains voltage per phase, THDi, TDD, load RMS reactive current, and AHF RMS reactive current output. c. Bar graphs shall be provided for display of the mains and load harmonic current amplitudes per harmonic order. d. Selected internal curves shall be provided for diagnostic and performance checks. e. Parameter adjustment shall be made via HMI and shall be password protected. f. HMI shall record and display an event log with time and date stamp. Event log shall be cleared via the stop function or power-off. A minimum of 100 events shall be stored. HMI shall provide external communications via a RJ45 connector. a. Modbus TCP/IP shall provide remote run/stop and display of operating parameters, set-up parameters and diagnostic functions. b. Ethernet IP shall provide remote communications via a web browser. Full functionality of the AHF shall be provided. HMI shall have a safety feature that shall lock out all other forms of control during service and commissioning. a. After 15 minutes of non-use the lockout shall clear and control functions shall revert to full functionality and remote control capability. HMI shall display a flashing warning screen in the event of a fault. HMI shall download pertinent parameters to a USB memory device to permit remote diagnostic evaluations and to save unit set up parameters. HMI shall include, but shall not be limited to, an on-board commissioning guide with automatic detection features. a. AHF shall automatically check for proper AC line phase rotation. Clockwise is required. b. AHF shall automatically test for CT phase rotation and polarity. If installation is incorrect, AHF shall be able to rotate and reorient CT’s through its own logic calculation. If proper alignment cannot be achieved, a fault warning and lockout of operation shall occur. c. AHF shall automatically calibrate the CT for optimum harmonic cancellation performance. d. AHF shall perform at full capacity for a period of 15 minutes to validate components meet temperature performance requirements. e. In the event any of the above cannot be reconciled, HMI shall lock out AHF function until commissioning agent corrects, verifies, and clears each test. EXTERNAL CURRENT TRANSFORMER A. Split core type current transformers shall be installed as defined herein and as shown on the Electrical Drawings. B. Primary current ratings of the CT’ shall be according to full load current rating of the circuit on which installed. INSERT AMPERE BELOW. 250 AMPERES TO 10,000 AMPERES ARE POSSIBLE. C. Current transformer ratio shall [_____] amperes (primary) to 5 amperes (secondary). D. Current transformers rated for 400 hertz shall be used. E. Class 1 (or better) accuracy shall be provided. 2.5 A. SOURCE QUALITY CONTROL Prior to shipment, the manufacturer shall fully test the performance at full current and voltage while functioning as a harmonic correction device to assure compliance with equipment specifications defined herein. 1. A certified report shall be provided to the Owner. Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 6 PART 3 - EXECUTION 3.1 A. 3.2 A. 3.3 A. EXAMINATION Verification of Conditions: Examine areas and conditions under which the work is to be installed, and notify the Contractor in writing, with a copy to the Owner and the Architect/Engineer, of any conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected. 1. Beginning of the work shall indicate acceptance of the areas and conditions as satisfactory by the Installer. INSTALLATION Preparation and installation shall be in accordance with reviewed product data, final shop drawings, manufacturer’s written recommendations, and as indicated on the Drawings. 1. Install low voltage active harmonic filters in accordance with the NEC and applicable local codes. FIELD QUALITY CONTROL See [Section 01 45 23 - INSPECTING AND TESTING SERVICES] [Section 01410 - INSPECTING AND TESTING SERVICES]. SELECT WHO DOES THE INSPECTING AND TESTING BELOW. B. Field inspection and testing shall be performed by certified technician from [the Owner] [the Contractor] [the manufacturer]. C. Perform start-up tests in accordance with manufacturer's instruction manual. D. Document equipment nameplate and test data on the test report. RETAIN DEMONSTRATION ARTICLE BELOW IF APPLICABLE TO THE PROJECT. 3.4 A. 3.5 A. DEMONSTRATION Provide the services of a factory-authorized service representative of the manufacturer to provide start-up service and to demonstrate and train the Owner’s personnel. 1. Test and adjust controls and safeties. Replace damaged or malfunctioning controls and equipment. 2. Train the Owner’s maintenance personnel on procedures and schedules related to start-up and shutdown, troubleshooting, servicing, and preventive maintenance. 3. Review data in operation and maintenance manuals with the Owner’s personnel. 4. Schedule training with the Owner, through the Architect, with at least seven day’s advanced notice. PROTECTION Provide final protection and maintain conditions in a manner acceptable to the Installer, which shall ensure that the low voltage active harmonic filters shall be without damage at time of Substantial Completion. END OF SECTION Section [26 35 26.11] [16280] Low Voltage Active Harmonic Filters 08/10/11 - 7