UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
SECTION 16331
PART 1
Pre-Purchase
January 2006
PAD-MOUNTED LIQUID COOLED
TRANSFORMERS
GENERAL
1.01
It is the intent of this specification to secure a pad-mounted liquid cooled transformer that has
been prototype tested, factory built, production tested, of the latest commercial design, together
with all accessories necessary for a complete installation as described in these specifications
herein. The equipment supplied and installed shall meet the requirements of the National
Electric Code and all applicable local codes and regulations. All equipment shall be new, of
current production by a U. S. firm which manufactures the equipment and assembles the unit so
that there is one-source responsibility for warranty, parts, and service through a local
representative with factory-trained service personnel.
1.02
A.
REFERENCES
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.
1.
2.
AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)
ANSI C2
(2002) National Electrical Safety Code
ANSI C37.47
(1981; Supp. 1983, Correction 1984, R 1992) Distribution Fuse
Disconnecting Switches, Fuse Supports, and Current-Limiting
Fuses
ANSI C57.12.22
(1989) Transformers – Pad-Mounted, Compartmental-Type, SelfCooled, Three-Phase Distribution Transformers with HighVoltage Bushings, 2500 kVA and Smaller: High Voltage, 34 500
GrdY /19 920 Volts and Below; Low Voltage, 480 Volts and
Below
ANSI C57.12.26
(1993) Transformers – Pad-Mounted Compartmental-Type, SelfCooled, Three-Phase Distribution Transformers for Use with
Separable Insulated High-Voltage Connectors, High-Voltage, 34
500 GrdY/19 920 Volts and Below; 2500 kVA and Smaller
ANSI C57.12.28
(1999) Switchgear and Transformers – Pad-Mounted Equipment
- Enclosure Integrity
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM A 167
(1994; Rev. A) Stainless and Heat-Resisting Chromium-Nickel
Steel Plate, Sheet, and Strip
ASTM D 92
(1990) Flash and Fire Points by Cleveland Open Cup
ASTM D 117
(1989) Electrical Insulating Oils of Petroleum Origin
ASTM D 877
(1987) Dielectric Breakdown Voltage of Insulating Liquids Using
Disk Electrodes
ASTM D 1535
(1989) Specifying Color by the Munsell System
SECTION 16331 PADMOUNT TRANSFORMER
Page 1 of 6
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
3.
ASTM D 3455
(1989) Compatibility of Construction Material with Electrical
Insulating Oil of Petroleum Origin
ASTM D 3487
(1988; R 1993) Mineral Insulating Oil Used in Electrical
Apparatus
FACTORY MUTUAL ENGINEERING AND RESEARCH CORPORATION (FM)
FM P7825
4.
5.
(1994) Approval Guide
INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. (IEEE)
IEEE 386
(1995) Separable Insulated Connector Systems for Power
Distribution Systems Above 600 V
ANSI/IEEE C37.71
(1984; R 1990) Three-Phase, Manually Operated Subsurface
Load-Interrupting Switches for Alternating-Current Systems
ANSI/IEEE C57.12.00
(2000) Liquid-Immersed Distribution, Power, and Regulating
Transformers
ANSI/IEEE C57.12.80
(1978; R 1992) Power and Distribution Transformers
ANSI/IEEE C57.12.90
(1993) Liquid-Immersed Distribution, Power, and Regulating
Transformers and Guide for Short-Circuit Testing of Distribution
and Power Transformers
ANSI/IEEE C57.98
(1994) Transformer Impulse Tests
ANSI/IEEE C62.11
(1999) Metal-Oxide Surge Arresters for Alternating Current
Power Circuits
INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)
NETA ATS
6.
(1991) Electrical Power Distribution Equipment and Systems
NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)
NEMA LI 1
7.
(1989) Industrial Laminated Thermosetting Products
NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)
NFPA 70
8.
(2002) National Electrical Code
UNDERWRITERS LABORATORIES INC. (UL)
UL 467
1.03
A.
B.
(1993; Rev thru Feb 2001) Grounding and Bonding Equipment
SUBMITTALS
Data
1.
2.
3.
Pre-Purchase
January 2006
Transformer guaranteed losses
Transformer loss calculations
Tested transformer losses
Manufacturer's Catalog Data
SECTION 16331 PADMOUNT TRANSFORMER
Page 2 of 6
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
1.
Pre-Purchase
January 2006
Pad-mounted transformers, dead-front
Submittal shall include manufacturer's information for each component, device, and accessory
provided with the transformer.
C.
Drawings
1.
Pad-mounted transformer drawings
Drawings shall indicate, but not be limited to the following:
a.
b.
c.
d.
D.
E.
Overall dimensions, front view, and sectional views.
ANSI nameplate data, including manufacturer's name, catalog number, and
ratings of fuses.
One-line diagram, including switch and fuses.
Manufacturer's published time-current curves (on full size logarithmic paper) of
the transformer high side fuse.
Reports
1.
Pad-mounted transformer design tests
2.
Pad-mounted transformer routine and other tests
3.
Submit certified copies of the following ANSI/IEEE C57.12.00 and ANSI/IEEE C57.12.90
transformer tests.
Design Tests
ANSI/IEEE C57.12.80, Section 5.1.2 states that "design tests are made only on representative
apparatus of basically the same design." Submit design test reports (complete with test data,
explanations, formulas, and results), in the same submittal package as the catalog data and
drawings for the specified transformer.
1.
Temperature rise: "Basically the same design" for the temperature rise test means a
pad-mounted transformer with the same coil construction (such as wire wound primary
and sheet wound secondary), the same kVA, the same cooling type (OA), the same
temperature rise rating, and the same insulating liquid as the transformer specified.
2.
Lightning impulse: "Basically the same design" for the lightning impulse dielectric test
means a pad-mounted transformer with the same BIL, the same coil construction (such
as wire wound primary and sheet wound secondary), and a tap changer, if specified.
Design lightning impulse tests shall include both the primary and secondary windings of
that transformer.
a.
b.
c.
ANSI/IEEE C57.12.90 paragraph 10.3 and ANSI/IEEE C57.98.
State test voltage levels.
Provide oscillograms with test report.
3.
Lifting and moving devices: "Basically the same design" for the lifting and moving
devices test means a transformer in the same weight range as the transformer specified.
4.
Pressure: "Basically the same design" for the pressure test means a pad-mounted
transformer with a tank volume within 30 percent of the tank volume of the transformer
specified.
SECTION 16331 PADMOUNT TRANSFORMER
Page 3 of 6
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
F.
Pre-Purchase
January 2006
Routine and Other Tests
Routine and other tests shall be performed by the manufacturer on the actual transformer
prepared for this project to ensure that the design performance is maintained in production.
Submit test reports, by serial number and receive approval before delivery of equipment to the
project site. Required tests and testing sequence shall be as follows:
1.
Resistance measurements
2.
Polarity and phase relation
3.
Ratio
4.
No-load losses (NLL) and excitation current
5.
Load losses (LL) and impedance voltage
6.
Lightning impulse:
a.
b.
7.
Low frequency dielectric
a.
b.
Applied voltage
Induced voltage
8.
Leak
9.
Dielectric Tests:
a.
b.
G.
ANSI/IEEE C57.12.90 and ANSI/IEEE C57.98
State test voltage levels
Applied voltage
Impulse
Certificates
PCB Content: Submit manufacturer's certificate that each transformer contains less than one
ppm of PCB at shipment for this contract.
H.
Operation and Maintenance Manuals
Pad-mounted transformers, dead-front
PART 2 PRODUCTS
2.1
Acceptable Producers: Cooper Power Systems, ABB, and General Electric.
2.2
PRODUCT COORDINATION
Products and materials not considered to be pad-mounted transformers and related accessories
are specified in Section 16380, "Underground Distribution Primary Cable and Accessories".
2.3
THREE-PHASE PAD-MOUNTED TRANSFORMERS, DEAD-FRONT
ANSI C57.12.26 and ANSI C57.12.28 with separate high- and low-voltage compartments.
Padmount transformer shall be FM Approved for Outdoor Use.
2.3.1
Compartments
SECTION 16331 PADMOUNT TRANSFORMER
Page 4 of 6
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
Divide high- and low-voltage compartments into sections with steel isolating barriers extending
the full height and depth of the compartment. Compartment doors: hinged lift-off type with stop in
open position and three-point latching.
2.3.1.1 High Voltage
High-voltage compartment shall contain the incoming line, insulated high-voltage load-break
connectors, bushing well inserts, six high-voltage bushing wells configured for loop feed
application, switches, dead-front surge arresters, tap changer handle, connector parking stands
with insulated standoff bushings, protective caps, and ground pad.
a.
Insulated high-voltage load-break connectors: IEEE 386, rated 15 kV, 95 kV BIL.
Current rating: 200 amperes rms continuous. Short time rating: 10,000 amperes rms
symmetrical for time duration of 0.17 seconds. Connectors and inserts shall be the
product of a single manufacturer. Connector shall have a steel reinforced hook-stick eye,
grounding eye, test point, and arc-quenching contact material.
b.
Bushing well inserts and feed-thru inserts: IEEE 386, 200 amperes, 15 kV Class.
Provide a bushing well insert for each bushing well unless indicated otherwise. Provide
feed-thru inserts as indicated.
c.
Three, two-position, oil immersed switches shall be mounted inside transformer tank with
switch operating handle located in high-voltage compartment and equipped with metal
loop for hoop stick operation. Fuses shall be interlocked with switches so that fuses can
be removed only when the associated switch is in the “OPEN” position. The high-voltage
overcurrent protection scheme provided with the transformer shall be a loadbreak BAYO-Net assembly with a flapper valve to minimize oil spillage. Overcurrent protection shall
be provided by a Bay-O-Net expulsion fuse mounted in series with partial range under-oil
ELSP current-limiting fuses with an interrupt rating of 30,000 A.
d.
Surge arresters: ANSI/IEEE C62.11, rated 9 kV, fully shielded, dead-front, elbow type
suitable for plugging into bushing well inserts. Provide three arresters for loop feed
circuits.
e.
Parking stands: Provide three (3) insulated standoff bushings for parking of energized
load-break connectors on parking stands.
2.3.1.2 Low Voltage
2.3.3
a.
Low-voltage compartment shall contain low-voltage bushings with NEMA spade
terminals, accessories, stainless steel diagrammatic transformer nameplate, and ground
pad.
b.
Accessories shall include drain valve with sampler device, fill plug, pressure relief device,
liquid level gage, pressure-vacuum gage, and dial type thermometer with maximum
temperature indicator.
Transformer
a.
Liquid-insulated, two winding, 60 hertz, 65 degrees C rise above a 30 degrees C average
ambient, self-cooled type.
b.
Insulating Liquid: Less flammable, edible-seed-oil based, and UL classified as complying
with NFPA 70 requirements for fire point of not less than 300 deg C when tested
according to ASTM D 92. Liquid shall be biodegradable and nontoxic. Insulating liquid
shall be Cooper Power Systems Envirotemp FR3.
SECTION 16331 PADMOUNT TRANSFORMER
Page 5 of 6
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
c.
Transformer shall be rated 500 kVA, 95 kV BIL.
d.
Transformer voltage ratings: 12,470 V Delta - 480Y/277 V.
e.
Tap changer shall be externally operated, manual type for changing tap setting when the
transformer is de-energized. Provide four 2.5 percent full capacity taps, two above and
two below rated primary voltage.
f.
Minimum tested impedance shall not be less than 4.5 percent.
g.
Audible sound levels shall comply with the following:
kVA
500
2.3.4
Pre-Purchase
January 2006
DECIBELS (MAX)
56
h.
Transformer shall include lifting lugs and provisions for jacking under base. The
transformer base construction shall be of the fabricated type and suitable for using rollers
or skidding in any direction. Provide transformer top with an access handhole. The
transformer shall have an insulated low-voltage neutral bushing with lugs for ground
cable, and with removable ground strap.
i.
Provide dial-type thermometer, liquid-level gauge, pressure-vacuum gauge, and drain
valve with built-in sampling device.
Corrosion Protection
Bases and cabinets of transformers shall be corrosion resistant and shall be fabricated of
stainless steel conforming to ASTM A 167, Type 304 or 304L. Base shall include any part of padmounted transformer that is within 3 inches of concrete pad. Form cabinets of stainless steel
sheets no less than No. 13 U.S. gage. Paint bases, cabinets, and tanks Munsell 7GY3.29/1.5
green. Paint coating system shall comply with ANSI C57.12.28 regardless of base, cabinet, and
tank material. The Munsell color notation is specified in ASTM D 1535.
PART 3
3.01
A.
EXECUTION
Delivery
Deliver to Owner as specified in Invitation to Bid.
END OF SECTION 16331
SECTION 16331 PADMOUNT TRANSFORMER
Page 6 of 6
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
SECTION 16420
PART 1
Pre-Purchase
January 2006
PANELBOARDS
GENERAL
1.01
It is the intent of this specification to secure panelboards that have been factory built,
production tested, of the latest commercial design, together with all accessories necessary for a
complete installation as described in these specifications herein. The equipment supplied and
installed shall meet the requirements of the National Electric Code and all applicable local
codes and regulations. All equipment shall be new, of current production by a U. S. firm which
manufactures the equipment and assembles the unit so that there is one-source responsibility
for warranty, and parts through a local representative with factory-trained service personnel.
1.02
UWF Building 36 Mechanical and Electrical Renovation Electrical Pre-Purchase Items Drawing
PP-E1 and PP-E2 shall apply to equipment of this Section.
1.03
A.
SUBMITTALS
Submit the producer's standard descriptive data sheets for each type of product being provided.
Mark the data sheet for the product being provided with an identifying mark or arrow. Any
deviation from the submittal requirements may be justification for total rejection. Submit the
following:
B.
A detailed layout and description of each panelboard.
C.
A statement that the Division 16 contractor has coordinated the circuit breaker requirements
with the other divisions supplying equipment. Any change shall be noted. This statement shall
also indicate that the wire and conduit sizes have been adjusted accordingly.
D.
Descriptive manufacturer’s information on all TVSS equipment being supplied installed within
the panelboard.
PART 2
PRODUCTS
2.01
A.
ACCEPTABLE PRODUCERS
Cutler-Hammer, General Electric Co., and Square D. Products shall be furnished by one
producer.
2.02
A.
GENERAL
UL 67 and UL 50. Panelboards shall be circuit breaker type. See panel schedules on
Drawings for electrical characteristics. All panelboards shall be rated for the intended voltage
and shall incorporate switching and protective devices of the number, rating, and type noted on
the drawing or specified herein. Where panelboards are to bused as service entrance
equipment, they shall be so labeled. Panelboards shall be listed and labeled by Underwriters'
Laboratories, Inc. in accordance with UL Standard 67, and shall comply with the requirements
of the National Electrical Code and NEMA. Panelboards for use as service disconnecting
means shall additionally conform to UL 869. The design shall be such that individual breakers
can be removed without disturbing adjacent units or without loosening or removing
supplemental insulation supplied as means of obtaining clearances as required by UL. Where
"space" is indicated, make provisions for future installation of breaker sized as indicated.
Panelboard locks shall be keyed same. Directories shall indicate load served by each circuit of
panelboard. Directories shall also indicate source of service (upstream panel, etc.) to
panelboard. Type directories and mount in metal holder behind transparent protector covering.
2.03
A.
BUS ASSEMBLY AND TEMPERATURE RISE
Panelboard bus structure and main lugs or main breaker shall have current ratings as shown
on the panelboard schedule. Bus bars shall be sized in accordance with UL standards to limit
SECTION 16420 PANELBOARDS
Page 1 of 3
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
temperature rise on any current carrying part to a maximum of 65 degrees C above an ambient
of 40 degrees C maximum. Bus bars shall be rigidly supported to prevent damage when
subjected to stress, vibration, or short circuit current. Ratings shall be established by heat rise
tests in accordance with Underwriters Laboratories Standard UL 67. Provide copper bus
assembly and copper only lugs for copper conductors. Bus bars shall be copper.
2.04
A.
CIRCUIT BREAKERS
Circuit breakers shall be molded case with thermal magnetic or solid state trip units of size,
type, and quantity shown on the drawings. The circuit breakers shall be bolt-on type, equipped
with individually insulated, braced, and protected connectors. The front faces of all circuit
breakers shall be flush with each other. Large permanent, individual circuit numbers shall be
affixed to each breaker in a uniform position. Paper stickers are not acceptable for individual
circuit numbers. Individual circuit numbers shall be phenolic. Trip indication shall be clearly
shown by the breaker handle. Provisions for additional breakers shall be such that no
additional connectors will be required to add circuit breakers. Breaker terminals shall be UL
listed as suitable for type and size of conductor provided for.
2.05
A.
MULTIPOLE BREAKERS
Provide common trip-type with single operating handle. Breaker design shall be such that
overload in one pole automatically causes all poles to open. Maintain phase sequence
throughout each panel so that any three adjacent breaker poles are connected to Phases A, B,
and C, respectively.
2.06
A.
INTEGRATED EQUIPMENT SHORT CIRCUIT RATING
Each panelboard, as a complete unit, shall have a UL short circuit current label equal to or
greater than the equipment rating shown on the panelboard schedule on the Drawings. Method
of testing shall be per Underwriters Laboratories Standard UL 67. Panelboards shall be
marked with their maximum short-circuit current rating at the supply voltage and shall be UL
listed. Panelboards rated 240 volts or less shall have short circuit current ratings not less than
10,000 amperes RMS symmetrical or as shown on the Drawings. Panelboards rated 480 volts
of less shall have short circuit current ratings not less than 14,000 amperes RMS symmetrical
or as shown on the Drawings.
2.07
A.
GROUNDING TERMINALS
Provide ground bus with lugs for equipment ground wires in each panelboard identified as
equipment grounding bus per UL 67 for connecting grounding conductors; bond to steel
cabinet. Ampacity shall be at least 50% capacity of the main bus. Ground bar or lugs shall be
copper.
2.08
A.
NEUTRAL TERMINALS
Provide isolated neutral bus terminal in each panelboard for connection of circuit neutral
conductors. Ampacity of neutral bar shall be the same as the full capacity of the main bus bars.
Neutral bushing shall give a suitable lug for each outgoing feeder requiring a neutral
connection. Neutral bar shall be copper.
2.09
A.
CABINET
Panelboard assembly shall be enclosed in a galvanized steel cabinet. Multi-section
panelboards shall have same size enclosures. The rigidity and gauge of steel shall be as
specified in UL Standard 50 for cabinets. The size of wiring gutters shall be in accordance with
UL Standard 67. Cabinets shall be equipped with latch and tumbler lock on door. Doors over
48" high shall be equipped with three point latch and vault lock. All locks shall be keyed alike.
Minimum depth of cabinets shall be 5-3/4" and minimum width shall be 20". Cabinet shall not
have ventilating openings. All cabinets shall have door-in-door construction.
2.10
A.
SAFETY BARRIERS
The panelboard interior assembly shall be dead front with panelboard front removed. Main lugs
SECTION 16420 PANELBOARDS
Page 2 of 3
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
or main breakers shall be barriered.
2.11
A.
UL LISTING
Panelboards shall be listed by Underwriters Laboratories and shall bear the UL label. When
indicated, panelboards shall be suitable for use as service equipment.
2.12
A.
NAMEPLATES
Provide an engraved laminated phenolic or micarta nameplate 1" high by 3" wide with minimum
1/4" letters indicating the panelboard identification. The panelboard shall also have a
nameplate affixed to the panelboard with the following information stamped therein:
Manufacturer, Voltage, Ampacity, Type of Panelboard, Manufacturer's Order No. and Date,
Interrupting Rating - RMS Sym.
2.13
A.
GROUND FAULT PROTECTION
Provide ground fault protection as indicated on the Drawings. Ground fault protection
provisions shall comply with NEC Article 230-95 and UL 943. Provide with "push-to-test"
button, visible indication of tripped condition, and ability to detect and trip on current imbalance
of 6 milliamperes or greater per requirements of UL 943 for Class A GFCI devices.
2.14
A.
PANELBOARD DIRECTORY
The directory shall be protected by a transparent protective covering inside of a metal frame
attached to the inside the panelboard door. An adhesive plastic sleeve is not acceptable.
2.15
A.
TRANSIENT VOLTAGE SURGE SUPPRESSION (TVSS)
Provide in panelboards as indicated otherwise on the drawings. The TVSS shall be bus
mounted and be a UL assembly with the panelboard. See TVSS specification for additional
requirements.
PART 3 EXECUTION
3.01
A.
Delivery
Deliver to Owner as specified in Invitation to Bid.
END OF SECTION 16420
SECTION 16420 PANELBOARDS
Page 3 of 3
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
SECTION 16620
PART 1
Pre-Purchase
January 2006
TRANSIENT VOLTAGE SURGE SUPPRESSION
GENERAL
1.01
It is the intent of this specification to secure transient voltage surge suppression equipment that
has been prototype tested, factory built, production tested, of the latest commercial design,
together with all accessories necessary for a complete installation as described in these
specifications herein. The equipment supplied and installed shall meet the requirements of the
National Electric Code and all applicable local codes and regulations. All equipment shall be
new, of current production by a U. S. firm which manufactures the equipment and assembles
the unit so that there is one-source responsibility for warranty, parts, and service through a local
representative with factory-trained service personnel.
1.02
UWF Building 36 Mechanical and Electrical Renovation Electrical Pre-Purchase Items Drawing
PP-E1 shall apply to equipment of this Section.
1.03
A.
SUMMARY
These specifications describe the electrical and mechanical requirements for an electrical
transient surge suppression filter systems integrating both transient voltage surge suppression
(TVSS) and electrical high frequency noise filtering for a variety of exposure locations as
defined in ANSI/IEEE C62.41-1991.
B.
The unit shall be designed for parallel connection to the facility's wiring system. The
suppression filter system shall be designed and manufactured in the USA by a qualified
manufacturer of suppression filter system equipment. The qualified manufacturer shall have
been engaged in the commercial design and manufacture of such products for a minimum of
five (5) years.
C.
These specifications are based on Current Technology's SF suppression filter systems. Other
manufacturers shall provide detailed compliance or exception statements to all provisions of
this specification fourteen (14) days prior to bid.
1.04
A.
STANDARDS
The specified unit shall be designed, manufactured, tested and installed in compliance with the
following standards:
ANSI/IEEE C62.41-1991 and C62.45-1992;
ANSI/IEEE C62.1 and C62.11;
Canadian Standards; (CUL);
Federal Information Processing Standards Publication 94 (FIPS PUB 94);
National Electrical Manufacturers Association (NEMA LS1-1992 Guidelines);
National Fire Protection Association (NFPA 70 [NEC], 75, and 78);
Underwriters Laboratories (UL 1449 and 1283);
Underwriters Laboratories (UL 489 and UL 198).
MIL Standard (220A Filter Attenuation).
B.
1.05
A.
The unit shall be UL 1449 Listed and CUL Approved as a Transient Voltage Surge Suppressor
and UL 1283 Listed as an Electromagnetic Interference Filter.
ENVIRONMENTAL REQUIREMENTS
Storage Temperature. Storage temperature range: -40° to +85° C (-40° to +185° F).
B.
Operating Temperature. Operating temperature range: -40° to +60° C (-40° to +140° F).
C.
Relative Humidity. Reliable operation with 5% to 95% non-condensing relative humidity.
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 1 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
D.
Operating Altitude. Capable operation up to 13,000 feet above sea level.
E.
Audible Noise. The unit shall not generate any audible noise.
F.
Magnetic Fields. No appreciable magnetic fields shall be generated. Unit shall be capable of
use in computer rooms without danger to data storage systems or devices.
1.06
A.
DESCRIPTION
This section describes the materials and installation requirements for high energy transient
voltage surge suppressors (abbreviated as TVSS throughout) for the protection of all AC
electrical circuits from the effects of lightning induced currents, substation switching transients
and internally generated transients resulting from inductive and/or capacitive load switching.
The specified system shall provide effective high energy surge current diversion and be
suitable for application in ANSI/IEEE C62.41 Category A, B, and C3 environments, as tested by
ANSI/IEEE C62.11, C62.45.
1.07
A.
SUBMITTALS
Submit shop drawings, product data and manufacturer's installation instructions for each type of
product being provided. Mark the data sheet for the product being provided with an identifying
mark or arrow. The surge suppression submittals shall also include:
1.
Electrical and mechanical drawings shall be provided by the manufacturer that shows unit
dimensions, weights, component and connection locations, mounting provisions,
connection details, and wiring diagram.
2.
Category C3 (20KV, 10KA) test results.
3.
UL 1449 clamp voltage documentation.
4.
IEEE Cat. B3 Ringwave (6kV, 500A @ 100 kHz)
5.
Certified Life Expectancy Testing
6.
Any required documentation in section 2.0 - Products
7.
Required documentation in Section 1.9 - Safety-Overcurrent Protection (Fusing).
8.
Provide evaluation forms provided herein filled out with manufacturer's data. Failure to
provide forms shall be the basis for rejection of the submittal.
9.
The manufacturer shall furnish an installation manual with installation, start-up, spare
parts lists, and operating instructions for the specified system.
10.
Provide test report(s) from a nationally recognized independent testing laboratory
verifying that the suppressor(s) can survive the published surge current rating on a per
mode and per phase basis. The test wave shall be the IEEE C62.41, 8x20 microsecond
current wave. Note that test data on individual modules are not acceptable.
1.08
A.
PRIOR APPROVAL REQUIRED
Manufacturer’s shall submit for a 10-day prior approval, a completed TVSS manufacturer’s
evaluation questionnaire (provide herein) and provide detailed compliance or exception
statements to all provisions of this specification to allow consideration.
1.09
A.
ELECTRICAL REQUIREMENTS:
Nominal System Operating Voltage shall be either: 480 VAC, wye, three phase, four wire plus
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 2 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
ground or 208 VAC wye, three phase, four wire plus ground as indicated on the Drawings.
B.
Maximum Continuous Operating Voltage (MCOV): The TVSS and all components in the
suppression path (including all MOVs SADs, and selenium cells) maximum continuous
operating voltage shall be greater than 115% of the nominal system operating voltage to
ensure the ability of the system to withstand temporary RMS overvoltage (swell conditions).
C.
Operating Frequency: The operating frequency of the system shall be at least 47-63 Hertz.
1.10
A.
SAFETY - OVERCURRENT PROTECTION (FUSING)
The manufacturer shall supply test data from a nationally recognized laboratory insuring that
when the TVSS suppression component(s) is installed commensurate with the installation
location for this project, it shall be proven to fail without protected load interruption, in a safe
non-violent manner (no smoke, fire, flame, case or module distortion, emission of molten
particles or other physical damage). Failure is defined and inclusive of bolted short and high
impedance (ground faulted) conditions within the suppressor. If Overcurrent Protection Devices
(OPD) are utilized to obtain a fail-safe condition, then a certified test from a nationally
recognized testing laboratory shall be submitted to indicate that: The OPD and suppression
component(s) I2T capacity is capable of conducting the specified transient current one-time
and ten-times without operation. The OPD shall be capable of clearing both high and low
impedance fault conditions (in all specified suppression modes) while protecting the TVSS
against violent failure as defined above. OPD(s) supplied shall be monitored and provide
internal and remote indication of suppression failure/operability. KAIC ratings of commercially
available OPD(s) alone or UL 1449 products listing shall not constitute validity without the
nationally recognized laboratory test as outlined above. Submittal documentation of
compliance shall be provided for approval.
1.11
A.
PROTECTION MODES
The TVSS shall provide protection as follows: All modes, L-N or L-L (where system does not
contain a neutral), L-G, and N-G (where applicable). Note: L=Line, G=Ground, N=Neutral.
1.12
A.
UL 1449 RATINGS
The maximum UL 1449 listed surge ratings for each and/or all of the specified protection modes
shall not exceed the following in any mode of protection:
System Voltage
120/208V
208, 277, 277/480 V
Without Disconnect
400 V
800 V
With Disconnect
500 V
1000 V
1.13
A.
NOISE ATTENUATION
The unit shall be UL 1283 Listed as an electromagnetic interference filter. The filter shall
provide insertion loss with a minimum of 50 dB at 100 kHz per IEEE Cat. B3 Ringwave (6kV,
500A @ 100 kHz). The system shall provide up to 120-dB insertion loss at 100 kHz when used
in a coordinated facility system.
1.14
A.
QUALITY ASSURANCE
The specified system shall be tested at the component and fully assembled level, under surge
conditions with AC power applied for a minimum of 1 hour. Testing shall include but not limited
to quality control checks, dielectric voltage withstand test per UL and CSA requirements, UL
ground continuity test, and operational and calibration test.
1.15
A.
WARRANTY
The manufacturer shall provide a full five year parts warranty from date of final acceptance of
the Owner against any part failure when installed in compliance with manufacturer’s written
instructions, UL Listing requirements, and any applicable national, state or local electrical code.
The contractor shall be responsible to honor the five-year warranty for parts and labor.
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 3 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
PART 2
2.01
A.
Pre-Purchase
January 2006
PRODUCTS: Approved manufactures, Liebert, Current Technology, Cutler-Hammer/Tycor or
approved equal.
SERVICE ENTRANCE
Suppressors shall be listed in accordance with UL 1449, Standard for Safety, Transient Voltage
Surge Suppressors.
B.
LIFE CYCLE TESTING: The TVSS system shall be duty life cycle tested to survive a minimum
of 2,500 surges per phase of 20kV, 10 kA, IEEE C62.41 Category C3 surge current with less
than 5% degradation of clamping voltage.
C.
For 3 phase, 4 wire configurations, suppressors shall provide suppression elements between
each phase conductor and the system neutral, each phase conductor and system ground, and
between neutral conductor and ground.
D.
UNIT STATUS INDICATORS: Solid state indicators with printed labels shall be provided on the
hinged front cover to redundantly indicate on-line status. Real time monitoring of all
suppression components that include all MOVs, Fuses, and Thermal Runaway of MOVs. A
problem with any of these features shall trigger a fault indicator light, form C contacts and
audible alarm. An alarm silence switch shall be provided with the suppressor.
E.
Suppressors shall meet or exceed the following criteria:
1.
Minimum surge current capacity, per NEMA LS-1 1992 shall be: 100,000 amperes per
mode, 200,000 amperes per phase (L-N + L-G).
2.
Pulse life ratings: ANSI/IEEE Cat. C3 (8/20sec. waveform): 2500 occurrences without
failing or degrading the UL 1449 surge suppression rating more than 10%.
3.
UL 1449 RATINGS: The maximum UL 1449 listed surge ratings for each and/or all the
specified protection modes shall not exceed the following in any mode of protection:
120/208V - 400 V, 277/480V - 800 V.
F.
Suppressors shall be of the solid-state componetry and shall operate bidirectionally.
G.
Suppressors shall be as manufactured by Current Technology, Liebert, EFI, and CutlerHammer/Tycor.
H.
The suppressor will have a warranty guarantee for a period of five years, incorporating a free
replacement if the suppressor is destroyed by lightning within the warranty period including all
parts and labor.
I.
Connection of surge suppression equipment shall be bus mounted to the service entrance
equipment. Provide internal overcurrent protection. The overcurrent protection shall be fuses.
Provide disconnect. In lieu of disconnect/fuses, a circuit breaker may be supplied for
overcurrent protection.
J.
When supplied internal to the service entrance equipment, it shall be UL listed as an assembly
with the service entrance equipment.
2.02
A.
B.
SURGE SUPPRESSION FOR DISTRIBUTION PANELS
GENERAL
SUMMARY. These specifications describe the electrical and mechanical requirements for a
hybrid high-energy 50,000 amp (per mode, 100,000 amps for multiple modes) class
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 4 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
suppression filter system that integrates transient voltage surge suppression (TVSS) with highfrequency electrical line noise filtering for medium to low exposure applications. The unit shall
be connected in parallel with the facility's wiring system per electrical drawings. The unit shall
be manufactured in the USA by a qualified manufacturer of suppression filter system equipment
who has been engaged in the commercial design and manufacture of such products for a
minimum of five (5) years.
C.
STANDARDS. The specified unit shall be designed, manufactured, tested, and installed in
compliance with the following standards:
American National Standards Institute and Institute of Electrical and Electronic Engineers
(ANSI/IEEE) C62.41-1991 and C62.45-1987);
Canadian Standards Association (CSA);
Federal Information Processing Standards Publication 94 (FIPS PUB 94);
National Electrical Manufacturers Association (NEMA);
National Fire Protection Association (NFPA 70 [NEC], 75, and 78);
Underwriters Laboratories (UL 1449 and 1283).
MIL Standard (220A Filter Attenuation).
D.
PRODUCT REQUIREMENTS.
E.
UNIT OPERATING VOLTAGE. The nominal unit operating voltage and configuration shall be
as indicated on the drawings.
F.
MAXIMUM CONTINUOUS OPERATING VOLTAGE (MCOV). The maximum continuous
operating voltage (MCOV) of all suppression components utilized in the unit shall not be less
than 115% of the facility's nominal operating voltage.
G.
TESTED SINGLE-PULSE SURGE CURRENT CAPACITY. Based on ANSI/IEEE C62.411991's standard 8 x 20 microsecond current waveform, and in accordance with NEMA
Publication No. LS 1-1992, the tested single-pulse surge current capacity, in amps, of the unit
shall be no less than as follows:
Protection Mode
Tested Single Pulse Surge Current
L-L
L-N
L-G
N-G
50,000 50,000 50,000 50,000
H.
UNIT STATUS INDICATORS. The unit shall include solid-state, long-life, externally mounted
LED visual status indicators that monitor the on-line status of each phase of the unit.
I.
UL 1449 PERFORMANCE RATINGS. The unit's published performance ratings shall be the
UL 1449 Listed suppression ratings. The UL 1449 suppression rating shall be, for each mode of
protection, as follows:
Nominal System
Voltage
L-N
L-G
N-G
120/208
277/480
400
800
400
800
400
800
J.
LIFE CYCLE TESTING: The TVSS system shall be duty life cycle tested to survive a minimum
of 2,500 surges per phase of 20kV, 10 kA, IEEE C62.41 Category C3 surge current with less
than 5% degradation of clamping voltage.
K.
INTERNAL IMPEDANCE. The unit shall provide a path of extremely low impedance and shall
not utilize printed circuit boards, quick type disconnects or small gauge wire in the surge current
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 5 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
diversion path. All internal paths shall be low impedance # 8 AWG Copper conductor or
Copper or Aluminum bus bar.
L.
NOISE ATTENUATION: The unit shall be UL 1283 Listed as an electromagnetic interference
filter. The filter shall provide insertion loss with a minimum of 50 dB at 100 kHz per IEEE Cat.
B3 Ringwave (6kV, 500A @ 100 kHz). The system shall provide up to 120-dB insertion loss at
100 kHz when used in a coordinated facility system.
M.
FIELD CONNECTIONS. Unless indicated otherwise, provide unit mounted to the panelboard
bus. The unit shall be UL listed as an assembly. Where indicated on the Drawings to be
remote mounted, the unit shall include mechanical lugs for each phase, neutral and ground, if
applicable. The lugs shall accommodate up to # 6 AWG copper conductor.
N.
ENCLOSURE. Units shall be provided in a NEMA 1 type enclosure of 14 gauge steel.
O.
Suppressors shall be as manufactured by Current Technology, Liebert, EFI, and CutlerHammer/Tycor.
P.
The suppressor will have a warranty guarantee for a period of five years, incorporating a free
replacement if the suppressor is destroyed by lightning within the warranty period including all
parts and labor.
PART 3
3.01
A.
EXECUTION
SERVICE ENTRANCE
Install one primary suppressor at each utility service entrance to the facility, according to
manufacturer's recommendations.
B.
Suppressor shall be installed on the service panel, per the manufacturer's installation
instructions. When bus mounted, provide disconnect switch.
C.
Conductors between suppressor and point of attachment to the panelboard shall be kept as
short and straight as possible when the suppressor is installed remote from the panelboard.
The TVSS shall be close-coupled to the panelboard. The conductors shall not exceed 24”.
D.
Suppressor's ground shall be bonded to the service entrance ground.
E.
The contractor shall twist the TVSS input conductors together to reduce input conductor
inductance.
F.
The contractor shall follow the TVSS manufacturer’s recommended installation practices as
found in the installation, operation and maintenance manual and comply with all applicable
codes.
3.02
A.
DISTRIBUTION PANELS
Install one secondary suppressor at each panelboard location indicated on the Drawings.
Verify proper voltage of panel/suppressor prior to installation.
B.
Conductors between suppressor and point of attachment to the panelboard shall be kept as
short and straight as possible. Provide a 60/3 circuit breaker in panelboard being protected for
connection to suppressor.
3.03
A.
WIRING REQUIREMENTS
Where the TVSS is provided with terminals, provide #6 AWG conductors for the phase, neutral
and ground connections. If the TVSS is provided with its own leads of #10 AWG, reduce the
panelboard circuit breaker to 30 amperes and make final connection.
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 6 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
SURGE SUPPRESSOR - SERVICE ENTRANCE
Specification
Section
Requirements
2.1.1
UL 1449 listed
2.1.2
ANSI C62.41-1991 C3 test results:
2.1.3
UL Listed Suppression modes: L-N, LG, N-G
2.1.4
Diagnostics (Type)
2.1.5.a
200,000 surge current rating (L-N + LG)/phase
2.1.5.b
Pulse Life Testing - 2500 Surges
2.1.5.c
UL 1449 Clamping
Voltage per mode
2.1.6
Solid State and Bidirectional
2.1.7
Manufacturer and Model Number
2.1.8
5 year Warranty
Performance of Product being
Submitted
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 7 of 8
UWF Building 36 Mechanical and Electrical Renovations
Pensacola, Florida
Pre-Purchase
January 2006
SURGE SUPPRESSOR - DISTRIBUTION PANELBOARDS
Specification
Section
Requirements
2.2.2
Filtering and Sine Wave Tracking
2.2.3
Built and tested to Standards: ANSI,
IEEE, CSA, FIPS 94, NEMA, NFPA,
UL
2.2.4
No Requirements
2.2.5
Applied Voltage Limit
2.2.6
MCOV greater than 115%
2.2.7
50,000 Amp Surge Current
L-N, L-G, N-G
2.2.8
Diagnostics (Type)
2.2.9
UL 1449 Clamping Voltage per mode
2.2.10
2500 Category C Surges
2.2.11
No Requirements
2.2.12
EMI/RFI up to 50 dB @ 100Mhz
2.2.13
Lugs to accommodate up to #6
Copper Conductors
2.2.14
NEMA 1 enclosure Surface or Flush
Mountable
2.2.15
Manufacturer and Model Number
2.2.16
5 year Warranty
Performance of Product being
Submitted
END OF SECTION 16620
SECTION 16620 TRANSIENT VOLTAGE SURGE SUPPRESSION
Page 8 of 8