Download Section [26 35 26.11] [16280]

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."
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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.
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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.
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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.
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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.
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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.
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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
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