877801.03 SECTION 801—ITS INFRASTRUCTURE COMPONENTS
801.01 Description
This work shall consist of furnishing and installing Intelligent Transportation Systems (ITS) infrastruc - ture components in accordance with these specifications and as shown on the plans or as directed by the Engineer. ITS infrastructure consists of: ITS controller cabinets; ITS Communication Hub cabinets; Solar Power Assemblies; surge protection devices including but not limited to those at the service entrance, at the main disconnect, at the power entry point, as well as point-of-use and low-voltage power surge protection devices; and associated ancillary items. See also NEMA Surge Organization glossary for terms and Acronym used herein.
801.02 Materials
a.Concrete shall conform to Section 217.
b.Reinforcing steel shall conform to Section 223.
c.Aluminum shall conform to Section 229 and shall be fabricated, welded, and inspected in accordance with Section 407.
d.Electrical items shall conform to Section 238.
801.03 Equipment
a.Surge Protection Device (SPD) at Power Entry Points
1.Electrical Specifications The SPD for the ITS devices power source shall have an operating voltage of 120 V single phase and a maximum continuous operating voltage of 150 V single phase. The SPD shall be configured to operate at 120 V single phase (i.e., two wires) or 120/240 V single phase (i.e., three wires) as required to match the supply circuit configuration. The Contractor shall verify that the SPD has been labeled to indicate that the unit is UL listed and meets the requirements of UL 1449, Third Edition. The power entry point SPD shall also be compliant with NEC
Article 285
The SPD shall be rated at a minimum of 80 kiloamps (kA) per phase. The SPD shall meet or exceed the following ratings: L-N (Line to Neutral), L-G (Line to Ground), N-G (Neutral to Ground) L-N L-G N-G
a.V oltage Protection Rating (VPR): 700V 700V 700V
b.I-nominal rating of 20kA
c.Short Circuit Current Rating (SCCR) shall be equal to or exceed 50kA or the available short circuit current, whichever is greater. 878801.03
2.Environmental Specifications The enclosure for a SPD shall have a NEMA 4 rating, or better.
3.Physical Specifications The Contractor shall install a SPD at the closest termination/disconnection point where the 120-volt (V) supply circuit enters the ITS device cabinet. The SPD shall be located on the load side of the service disconnect and ahead of any and all ITS electronic devices.
4.Communication Standards The suppression device shall have visual indication monitoring the operation status of each Metal Oxide Varistor (MOV) including N-G. The SPD shall include one set of Normally Open (NO), Normally Closed (NC) Form C contacts for remote monitoring.
b.Low-V oltage Power Surge Protection Devices (SPD) Devices, Control, Data, and Signal Systems
1.Electrical Specifications These devices shall be of hybrid multi-staged design with maximum let-through voltage as shown in Table VIII-1. Testing shall be for all available modes (i.e. power L-L, L-G; data and signal center pin-to-shield, L-L, L-G, and shield-G where appropriate). The Contractor shall install SPD within the cabinet on all conductive circuits. The SPD shall have an operating voltage matching the characteristics of the device, such as 24 volts of direct current (VDC) and less than 5 VDC for data and video functions. These specialized SPDs shall be UL 497B or UL 497C listed, as applicable.
2.Communication Standards Connections shall include, but are not limited to, Category 5 data cables, coaxial video cables, twisted pair video cables, and low-voltage control cables that comply with Electronic Industries Alliance (EIA) requirements as detailed in the EIA-232/422/485 Standards.
c.Controller and Hub Assembly Cabinets Cabinets shall conform to NEMA 3R requirements. The cabinet enclosure top shall be crowned to prevent standing water and shall be constructed so that it is weather resistant under all conditions. Cabinets shall be constructed using unpainted sheet aluminum alloy 5052-H32 with a minimum thickness of 0.125 inch. The cabinets shall have a smooth, uniform natural aluminum finish without rivet holes, visible scratches, or gouges on the outer surface. The Engineer may approve other finishes as acceptable prior to ordering equipment.
1.Mechanical Specifications All exterior cabinet and door seams shall be continuously welded and smooth. All welds shall be neatly formed and free of cracks, blow holes, and other irregularities. All exterior cabinet welds shall be made using the gas tungsten arc (TIG) welding method. All internal cabinet 879801.03 welds shall be made using the gas metal arc (MIG) or TIG process. The Engineer may permit other welding methods if preapproved by the Engineer. All inside and outside edges of the cabi - net shall be free of burrs. All edges shall be filed to a radius of 0.03125 inch minimum. ER5356 aluminum alloy bare welding electrodes shall be used and welds shall conform to American Welding Society standard AWS A5.10 requirements for welding on aluminum. Procedures, welders, and welding operators shall conform to AWS requirements as contained in AWS B3.0 and C5.6 for aluminum. The cabinet shall be furnished with two lifting eye plates on either side of the top for lifting the cabinet and positioning it. Each lifting eye opening shall have a minimum diameter of 0.75 inch and support a weight load of 1,000 pounds. All external bolt heads shall be tamperproof.
a.Doors The cabinet shall be supplied with front and rear doors, each equipped with a lock and handle. Each cabinet door shall have no fewer than three stainless steel hinges or alter - nately, one full-length piano hinge. Hinges shall be made of 14-gauge stainless steel and TABLE VIII-1 SPD Minimum Requirements Frequency/ Let-Through V oltage Circuit Continuous Bandwidth/ Capacity (All voltages are Description Current Data Rate Capacity measured from zero) Coaxial 300 mA 10 MHz 10,000 amps per <100 Vpk Video 10 Mbps mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) Power and Up to 60 Hz 5,000 amps per <150 Vpk Control 5 A (sensitive loads) mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) Up to 12 V Power and Up to 60 Hz 5,000 amps per <175 Vpk Control 5 A (sensitive loads) mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) Up to 24 V Power and Up to 60 Hz 5,000 amps per <200 Vpk Control 5 A (sensitive loads) mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) Up to 48 V Power and Up to 60 Hz 10,000 amps per <550 Vpk Control 10 A (sensitive loads) mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) Up to 120 V AC RS422 35 MHz 10,000 amps per <30 Vpk Up to 12 V 500 mA 10 Mbps mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) RS485 35 MHz 10,000 amps per <30 Vpk Up to 12 V 500 mA 10 Mbps mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) T1 55 MHz 10,000 amps per <20 Vpk Up to 7.5 V 500 mA 10 Mbps mode (8x20 µs) (IEEE Cat C Low 6 kV/3 kA) Cat 5 3,000 amps per <30 Vpk (10 x 1000 µs) Up to 12 V 500 mA 100 Mbps mode (10x1000 µs) 880801.03 the stainless steel hinge pins shall be spot-welded at the top. The hinges shall be mounted so that they cannot be removed from the door or cabinet without first opening the door. The doors and hinges shall be braced to withstand a 100-pound-per-vertical-foot of door height load applied vertically to the outer edge of the door when standing open. There shall be no permanent deformation or impairment of any part of the door or cabinet body when the load is removed. Each door opening shall be double-flanged on all four sides. The doors shall include a closed-cell, neoprene gasket seal permanently bonded to the inside of each door such that the neoprene forms a weather-tight seal when the door is closed The Engineer may approve the use of alternative cabinet designs that use special material combinations and gauges provided the door materials are non-corrosive, weatherproof in their design, and meet or equal the structural requirements stated herein.
b.Latches All cabinet doors shall be furnished with a three-point latching system. The latching system shall consist of the following latching points:
1.Center of the cabinet (lock).
2.Top of the cabinet – controlled by the door handle.
3.Bottom of the cabinet – controlled by the door handle. Latching points 2 and 3 shall remain in the locked position until the main cabinet door lock is unlocked. When the locks in points 2 and 3 are unlocked, rotation of the door han - dle shall allow the main door to swing open. The locking mechanism shall be equipped with nylon rollers to secure the top and bottom of the door. Rollers shall be fabricated from nylon with a diameter of at least 8/10 inch. All cabinets shall be furnished with a door stop that retains the main door open in a 90- degree and 135-degree position. The doors shall be equipped with the Department’ s standard tumbler lock, Number 9R48773, or shall be keyed as directed by the Engineer, with stainless steel hardware that allows the door to be secured using a padlock. Two heavy duty keys shall be provided with each cabinet.
2.Electrical Specifications All equipment furnished shall conform to applicable UL, NEC, EIA, ASTM, ANSI and IEEE requirements. Surge Protection Devices (SPD) shall be provided for the main AC power input at the service panel assembly, and on both sides of all electronics as required by the sections above in this specification. The SPD shall be accessible from the front of any panel used in the cabinet. The SPD for the cabinet’ s main AC power input shall be connected on the load side of the cabinet circuit breaker. All wiring in the ITS controller cabinet shall conform to NEC requirements. Only stranded copper conductors shall be used. All wiring shall be laced. 881801.03
a.Service Panel Assembly A service panel assembly shall be provided to function as the entry point for AC power (50 Amp, minimum, at 240V) to the cabinet and the location for power filtering, surge protection and equipment grounding. Branch circuits, SPD, and grounding shall be pro - vided only as required for the ITS device-connected load served by the cabinet, including ventilation fans, internal lights, electrical receptacles, etc. Only circuit breaker panels that are UL listed, conforming to Federal Specification W-P- 115C, and complying with NEMA standards shall be used. Circuit breaker panels shall be mounted so that the switches are accessible without having to reach around any other equipment in the cabinet. Branch circuit breakers shall be molded case units with quick make, quick break, and trip free mechanisms. Circuit breakers shall be UL listed, conform to Federal Specification W-C-375B, and comply with NEMA standards. Circuit breakers shall be fixed trip type. ITS controller cabinets shall be equipped with a 240V/50A pin-and-sleeve receptacle and manual transfer switch for connection to an external portable generator. The pin-and- sleeve receptacle shall be compatible with CS6369-type generator plugs, or the Contractor shall furnish a mating adapter cable.
b.Terminal Blocks All electrical inputs and outputs shall be terminated on terminal blocks where the voltage and current rating of the terminal block is greater than or equal to the voltage and current rating of the wire(s) connected to it. The connector harnesses for the ITS devices and other accessory equipment shall be wired into the cabinet circuitry. All conductors shall be either terminated on terminal blocks using insulated, crimp- type terminal lugs of the appropriate size to accommodate the conductor to be terminated, or terminated on DIN-rail terminal blocks. Insulated, crimp-type lugs shall be used for the termination of conductors when two or more conductors are terminated on field wiring terminal block screws or a terminal ring. All terminal block circuits shall be numbered. The terminal blocks shall be covered with a clear insulating material to prevent inadvertent contact. Grounding electrode and grounding electrode conductors shall be connected using exothermic welds as indicated in Section 700.05.
c.Ground Bus Bar All ground bus bars shall be fabricated from a copper alloy material compatible with copper wire. All ground bus bars shall have at least two positions where a #6 AWG stranded copper wire can be attached. The ground bus bar shall be mounted on the side of the cabinet wall adjacent to the service panel assembly for the connection of AC neutral wires and chassis ground wires. If more than one ground bus bar is used in a cabinet, use a minimum of a #8 AWG copper wire to interconnect them. 882801.03
d.Power Distribution Assembly A power distribution assembly shall be furnished that fits in the EIA 19-inch rack and provides for protection and distribution of 120/240 V AC power.
e.Interior Lighting The controller cabinet shall be furnished with two 20-watt fluorescent lamps (or equiva - lent LED lighting) and clear shatter-proof shield assemblies mounted on the inside front and rear top of the cabinet. The lamps shall be unobstructed and able to cast light on the equipment. The controller cabinet shall be equipped with door-actuated switches so that the lamps automatically turn on when either cabinet door is opened and go off when the doors are closed.
f.Power Distribution Strips Each controller cabinet shall be equipped with a power distribution strip. The power distribution strip shall have six NEMA 5-15 receptacles. Overcurrent protection shall be provided by a resettable overload 15 amp circuit breaker. The power distribution strip shall also provide receptacle isolation to prevent plugged-in components from interfering with one another. Power distribution strips shall be IP-addressable and have the ability to reset each receptacle remotely. The power strips shall have integral indicator lights that are lit while the strip is powered on. The cord and plug shall conform to standards addressed in Article 400 (Flexible Cords and Cables) and Article 210 (Branch Circuits) of the NEC. The power strips shall provide integral EMI/RFI protection conforming to UL 1283.
g.UPS Receptacle A receptacle shall be included in the controller cabinet that enables the Uninterruptible Power Supply (UPS) to be powered as described below in this specification.
d.Controller Cabinets
1.Mechanical Specifications
a.Rails The controller cabinet shall be supplied with four cabinet rails that form a cage for the purpose of mounting miscellaneous wiring panels and various mounting brackets. Rails that extend the length of the cabinet’ s sides shall be used, starting from the bottom of the enclosure. The rails shall be either 0.1345-inch thick plated steel or 0.105-inch thick stainless steel. The rails shall be keyhole designed with slots 2 inches on center with a top opening of 5/8 inch in diameter to allow the insertion of a 5/8-inch by 1-inch carriage bolt. The rails shall be 1 1/2 to 2 inches wide by 1/2 inch deep. Unistruts or other rail types shall not be used. The rails supplied shall be drilled and tapped for 10-32 screws or rack screws with EIA universal spacing. 883801.03
b.Racks The ITS controller cabinet shall include a standard 19-in EIA/TIA equipment rack centered in the cabinet for mounting of the devices. The clearance of the racks between the rails shall be 17.75 inches.
c.Shelf A level, rollout internal shelf, with a minimum work area measuring 10 inches by 10 inches shall be installed in each cabinet. The shelf shall be capable of maintaining a constant 20-pound load without deflection. The shelf position shall be adjustable, with a maximum of 2-inch increments, from the top of the load panel to 12 inches from the top of the controller cabinet.
d.V entilation A louvered vent at the bottom of the main door shall be provided to maintain ventilation throughout the cabinet. The louvered vent depth shall not exceed 0.25 inch. The intake vent shall be made rain tight through the use of a water-deflecting ventilation panel on the inside of the main door securing the filter to the door. This panel shall form a shell over the filter to give it mechanical support, and shall be louvered to direct the incoming air downward. An easily removable, reusable filter shall be provided that is held in place with a bottom trough and a spring-loaded upper clamp. A filter that measures no less than 16 inches by 12 inches by 7/8 inch thick shall be provided. No incoming air shall bypass the filter. The bottom trough holding the filter shall be designed in such a manner that any accumulated moisture shall be drained to the outside of the controller cabinet. The ITS controller cabinet shall be equipped with dual thermostatically controlled fans located inside at the top of the cabinet. UL-listed exhaust fans having a minimum air flow rating of 100 cubic feet per minute shall be used. The electric fan motors shall have ball or roller bearings and be rated for continuous duty, with a service life of at least five years. Exhaust air shall be vented through openings in the roof of the controller cabinet. The thermostats that activate the fans shall be mounted on the inside top of the cabinet. The thermostats shall be user-adjustable to allow temperature settings ranging from a minimum of 70° F to a maximum of 160° F . The thermostat shall activate the fans within ±3° of the set temperature. The thermostats shall be rated for continuous on-off use and have a service life of at least five years.
e.Sunshields If the cabinet is provided with sunshields, as indicated in the plans, the sunshields must be mounted on standoffs that provide an air gap of at least one inch between the exterior cabinet walls and the sunshields. Sunshields shall be fabricated from 5052-H32 aluminum sheet that is 0.125 inch thick. Sunshield corners shall be rounded and smoothed for safety.
2.Physical Specifications The ITS controller cabinet shall be constructed of unpainted sheet aluminum alloy 5052- H32 with a minimum thickness of 0.125 inch. The cabinet shall have a smooth, uniform natural 884801.03 aluminum finish without rivet holes, visible scratches, or gouges on the outer surface. The En - gineer may approve the use of other finishes provided approval is obtained from the Engineer in advance of the Contractor ordering such equipment. The minimum dimensions for cabinets are listed below. ______________________________________________________________________ Required Cabinet Dimensions in Inches_____________________________________________ Cabinet Type Height Width Depth______________________________________________________________________ Pole Mount - 336S 46 - 48 24 - 26 22 - 24 Ground Mount - 334 66 - 68 24 - 26 30 - 32______________________________________________________________________
e.Communications Hub Assembly A Communications Hub Assembly shall consist of an air conditioned, double wide cabinet with UPS and backup generator assembly. The Communications Hub Assembly shall serve as the housing for the field installation of a Primary Network Switch and associated termination and connectivity of fiber optic backbone cables, as well as other ITS field equipment when specified in the Contract.
1.Mechanical Specification The Contractor shall furnish a double wide cabinet meeting the following minimum requirements: • Interior cabinet dimensions shall be sufficient to house all of the equipment proposed to be installed within the cabinet, including but not limited to: two (2) 96-fiber (minimum) Fiber Distribution Centers, Primary Network Switch, rack mount air conditioner, surge suppression, grounding bars, UPS, transfer switch, and cabinet power. • Two (2) full size front doors and two (2) full size back doors • Two (2) 19” EIA racks • Louvered air intake in doors with filters • Base mount cabinet with anchor bolts • Insulation (doors, walls and ceiling) • One full shelf minimum rack width The Contractor shall furnish a 19” rack-mountable or exterior cabinet mountable, air-cooled, air conditioner with heater that is intended for use in an outdoor traffic cabinet when required. The air conditioner shall be thermostatically controlled. The air cooling capacity of the air conditioner shall be appropriately sized for the cabinet in which it will be housed with consid - eration of the heat produced by the equipment to be installed in the cabinet; the internal cabinet temperature due to the environmental conditions; and the temperature requirements (operating range) of the equipment to be installed. The air conditioner shall be UL certified and shall be CFC free. 885801.03 The cabinet shall be designed so that ambient air intake will be through a vent in the front door of the cabinet to the condenser section of the air conditioner. Warm air from the condenser shall be expelled through a vent in the back door of the cabinet.
2.Uninterruptible Power Supply (UPS) A UPS shall be provided at cabinet locations designated for backup power on the Plans. The Contractor shall provide UPS that meets the requirements of Section 802 and the following: • The UPS assembly for use in the Hub shall provide complete non-interruptible power protection, voltage regulation and surge and spike protection for all ITS devices and communications equipment that are powered from within the Hub. • The capacity shall be at least 3 kV A, but shall be sized to meet the power needs of the Hub enclosure-installed equipment for the duration as stated below. o The UPS shall be of sufficient design to fully operate all Hub-installed devices and communications equipment that are powered from the Hub and installed in the Hub enclosure/environmental enclosure for a minimum of four hours. The Contractor shall be responsible for determining the appropriate size/capacity of the UPS. o The Contractor shall supply the power and sizing calculations and all software and hardware manuals at the time of catalog cut submission. o Surge protection shall be rated at 4,000 joules, internal or external to the UPS. The Contractor shall provide services to set up each UPS assembly as defined herein for instal - lation in each cabinet.
3.Physical Specifications The minimum dimensions shall be equivalent to a Type 334 cabinet with dimensions of approximately 66.9” (H) x 44.5” (W) x 30.2” (D). A full-sized door shall be approximately 58” (H) x 22” (W). Each cabinet door shall be full size and meet all the requirements of this specification. Insulation shall be Low-e type, shall have an “R” value of 5 or better, and have aluminum facings. Insulation shall provide a Class A, Class 1 fire rating.
f.Permanent Generator Assembly
1.Mechanical Specifications The generator assembly shall operate on liquid propane (LP) fuel. The generator shall be a fixed mount type. The generator enclosure shall be coated with electrostatic applied powder paint, baked, and finished to the manufacturer’ s specifications. The color will be manufacturer’ s standard. The generator set shall be packaged with a sound attenuating enclosure. The enclosure shall be completely lined with sound deadening material. This material must be of a self-extinguishing design. The generator shall be rated for an audible noise level of 65 dBA (or better) at 3 feet. 886801.03 The Contractor shall provide a concrete foundation designed to accommodate the generator and fuel tank equipment designated in this Specification. Concrete pad foundation design to be provided by the Contractor. The design shall be submitted to the Engineer of Record for ap - proval prior in installation. The Contractor shall provide all hardware and materials necessary for the associated concrete pad foundation. The operating end of the equipment (including all material handling equipment and the entire dispensing system) and any part of the LP gas system or container which is exposed to vehicu - lar traffic shall be protected from damage by vehicular traffic by concrete bollards. The bollards shall extend at least 24 inches beyond any part of the LPG transfer system or container which is exposed to vehicular traffic. Bollards shall be round, six (6) inch diameter by four (4) feet tall, steel sleeved, and filled with hydraulic cement concrete. The Contractor shall place steel sleeves in the concrete foundations. Bollard tops shall be rounded off by hand. Bollards shall be painted Federal Y ellow after curing. Bollards shall be spaced no further apart than 4 feet around the perimeter of the foundation area. The fuel tank shall be an above ground tank sized and designed to ensure starting and running of the generator set under the anticipated full load for a period of not less than seventy-two
72.hours, at an ambient temperature of 20 degrees F . The fuel tank shall be fabricated and marked in accordance with Section VIII, Division 1, of the edition of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, latest revision. Fuel tank shall include a percentage full indicating device. The fuel tank shall include the required pres - sure/gas flow regulator(s) and shut off valves in accordance with NFPA 54, NFPA 58, and as required by local and/or state regulations. The fuel tank shall include all required components for a complete and functional delivery of LP gas to the generator set including, but not limited to, manual shut-off valve, fuel filter, line service regulator, solenoid fuel shut-off valve to open when generator engine runs, and gas flow regulator. The fuel tank shall be securely anchored to the concrete foundation per manufacturer’ s recommendations. An 80% charge of LP gas in the fuel storage tank shall be provided at the time of final accep - tance by the Owner. Complete charges of antifreeze and oil shall also be provided. LP gas shall meet the Gas Processors Association (GPA) Standard 2140-97 Liquefied Petroleum Gas Specification and Test Methods. The LP gas tank shall be grounded by a separate, adequate ground. Grounding shall consist of a grounding electrode placed at a sufficient depth to ensure grounding of any static charge generated, and shall be connected to the tank by copper wire equivalent in conductive capacity sized per tank manufacturer’ s recommendations. The ground wire shall be attached by a means that ensures a good electrical bond. The LP gas storage tanks shall not be introduced to a source of possible ignition within 10 feet of tank having volumes of 125 to 500 gallon, or 25 feet of tanks having volumes having volumes of 501 to 2,000 gallons. Combustible materials, i.e., weeds, brush, trash, etc., shall not be kept in close proximity to propane tanks. The LP gas tanks and any of its parts shall not be located within 10 feet of a vertical plane beneath overhead electric power lines that are more than 600 volts. Tank shall be labeled with the following: • A “no smoking,” sign or decal with red letters at least 2 inches high on a white or aluminum background prominently displayed. 887801.03 • A sign with letters at least 1/2 inch high with the following instructions: “Extinguish all pilot lights and open flames”; “Vehicle must be vacated during filling process”; “Turn off engine.” • The nature of the tank contents (Propane). The letters will be at least four inches high, easily visible to the public and in sharp contrast to any background color. • Sign displaying, “Propane Emergency Shutoff.” The letters shall be at least one inch high and in sharp contrast to any background color. • Provide a metal band on an adjacent bollard with the following information engrave/ stamped: The vendor’ s company name and an emergency vendor point of contact, and shall be current throughout the contract. • Vendor point of contact shall be available 24 hours a day, seven days a week.
2.Electrical Specifications The generator assembly shall be sized to provide backup power to all ITS Communications Hub Assembly components and any equipment it provides power to, including but not limited to the air conditioner and primary network switch, for a minimum of 3 days at 100% load. This sizing shall not take into account the time during which the cabinet will receive backup power from the UPS. The generator shall be a minimum of 8 kW . The generator assembly shall include an automatic transfer switch (ATS) sized in accordance with the cabinet electrical requirements and that of the generator.
3.Environmental Specifications The generator assembly shall be capable of operating in temperatures ranging from -10°C to +50°C, with a relative humidity of 5 to 95%.
4.Physical Specifications The generator assembly shall include a minimum of two propane fuel tanks, an appropriately sized transfer switch, and all necessary wiring, conduit, etc. that are required for a complete installation.
5.Communication Standards The generator assembly shall include a management port for communications by laptop computer in the field, as well as an RJ-45 port for Ethernet communications through the Primary Network Switch.
6.Management Standards The generator assembly shall include a controller system that records information about the generator’ s status. The controller shall provide alerts when the generator comes on, indicating a power loss in the field. 888801.03
g.Solar Power Assembly This work shall consist of furnishing and installing a solar power assembly to provide power for CCTV cameras, VDS and/or RWIS and associated controller cabinets with ITS equipment and network devices including, but not limited to, managed field Ethernet switches, digital video encoders, CCTV interface panels, and Vehicle Detector interface assemblies.
1.Mechanical Specifications The solar panel must be able to function in different climate conditions. The solar power assembly shall include all solar panels, batteries, voltage regulator, wiring, conduit, and a NEMA 3R pole-mount cabinet to house the batteries and voltage regulator. The size and quantities of the solar panels and batteries shall be designed to enable the associated ITS devices to operate for up to 7 consecutive sunless days. The solar panel assembly design, with calculations (including solar array sizing calculations and parameters used) shall be submitted to the Engineer for review and approval prior to ordering equipment. Each solar cell shall be bypass diode protected to prevent power loss if a module is temporarily shaded. The crystalline silicon solar module shall consist of cells that are permanently encapsulated between a tempered glass cover and layers of ethylene vinyl acetate (EV A) pottant or encap - sulant with a polyvinyl fluoride (PVF) and aluminum foil back sheet to provide a moisture free environment. Units without foil backing sheets must have Underwriter Laboratory (UL) approval. The module frame shall be made from extruded aluminum alloy and be adequately sized to attach the required size and quantity of solar panels. The mounting bracket shall use tamper proof hardware to secure the Photovoltaic (PV) module to the frame. An ultraviolet (UV) resistant, weatherproof junction box providing wire termination for up to #8 AWG wiring shall be provided with the PV module.
2.Electrical Specifications The solar power assembly shall be configured for nominal 12 VDC and be capable of recharging the system to full capacity after 6 hours of continuous operation, in 3 hours +/- 0.5 hours during optimum sun conditions in December. The batteries shall meet the following minimum requirements: • Rechargeable for photovoltaic application • Valve regulated lead-calcium gelled electrolyte • Polypropylene case The voltage regulator shall meet the following minimum requirements: • Minimum of 15v for battery charging • Begin charging when battery voltage is 13.3v or less • Discontinue charging when battery voltage is 14.5v • Dormant current of 15mA or less 889801.04
3.Environmental Specifications The cabinet shall be pole mounted and NEMA 3R rated. All components of the solar power assembly shall comply with NEMA TS-2 Standards.
4.Physical Specifications The NEMA 3R cabinet shall be of sufficient size to house all of the batteries and the charge regulator plus a minimum of 10% additional capacity. The Contractor shall furnish and install all mounting materials required for the cabinet installation. The solar panels shall meet the following minimum requirements: • Cells are laminated between ethylene vinyl acetate and tempered glass • Capable of multiple arrays and series or parallel wiring configurations • Extruded aluminum frame • Mounting hardware The Solar Panel mounting bracket shall be designed to conform to the current edition of AASHTO’ s Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals.
801.04 Procedures
a.Controller Cabinets Cabinet installations, whether ground-mounted on concrete foundations or pole-mounted on wood or steel poles, shall be in accordance with the detail drawings provided in plans. The Contractor shall furnish the cabinet with the necessary hardware for either ground-mounted or pole-mounted installations. Pole-mounted field cabinets shall have mounting brackets on both sides so that the cabinet doors are fully functional. The cabinet foundation for ground-mounted cabinets shall be in accordance with Section 700. The ground mounted controller cabinet shall be supplied with a removable base plate. The cabinet shall have two aluminum plates welded inside for anchoring the cabinet to a concrete or composite type base. The plates shall be fabricated from aluminum alloy 5052-H32 and shall be 4 inches wide by 0.125 inch thick and shall have four 1-inch diameter holes. Controller cabinets for DMS shall be ground mounted and placed 100 feet in advance of the DMS structure such that messages can be clearly observed from the cabinet, unless otherwise noted on the Plans and/or approved by the Engineer. Provisions shall be made for all telephone, data, control, and confirmation connections between the ITS device and controller cabinet, and for any required wiring harnesses and connectors. All wiring panels (terminal blocks) shall be neatly finished and clearly and permanently marked with identifications applied by silk screening. All conductors and communication cable shall be neatly arranged in the cabinet and bundled in groups with cable ties. The Contractor shall use permanent labeling for all cabling in the cabinet to identify direction of communications for fiber jumpers 890801.04 and communications connections for ITS devices. The SPD shall be wired in such a fashion as to allow removal and replacement without disconnecting power to the entire cabinet (i.e., using a dedicated breaker). The cabinet manufacturer’ s name shall appear only on the inside of the main cabinet door, along with the year and month of the cabinet’ s manufacture. This information shall be attached to the door by a method that is water resistant. The controller cabinet shall be provided with a unique serial number that is engraved on a metallic plate epoxied to the inside of the cabinet on the upper right-hand side wall. A heavy-duty re-sealable plastic bag shall be mounted on the backside of the main cabinet door for storing cabinet prints, a list of terminal block connections, and other documentation that may be subject to damage when exposed to direct sunlight or moisture. All equipment shall be placed in the cabinet according to the manufacturer’ s recommendations. A minimum clearance of 6 inches shall be provided between the top of the cabinet and the top of any equipment placed on the top shelf of the cabinet. A minimum clearance of 2 inches shall be provided between each side of the cabinet and the equipment placed on the cabinet shelves.
b.Communications Hub Assembly Prior to the installation of the ITS Communications Hub Assembly, the Contractor shall submit details of the proposed assembly for review and approval by the Engineer. Submittal information shall include but is not limited to product cut sheets, proposed plan view of the assembly in its entirety, wiring diagrams, cabinet equipment layout, and calculations for the required generator and UPS run times. All materials shall be installed in accordance with manufacturer recommendations. The cabinet shall be installed on the foundation in accordance with requirements detailed in these specifications and shall include a concrete technician pad as shown in Road and Bridge Standards installed at the front and rear sides of the cabinet.
c.Generator Assembly The generator shall be installed to minimize the possibility of theft. A proposal outlining the instal - lation approach shall be submitted to the Engineer for approval. The generator, fuel tanks and fuel lines shall be installed in accordance with all relevant and appropriate state and local standards and codes. Fuel tanks shall be filled with gas upon installation to enable testing of the assembly during the acceptance period and to enable proper functioning during automatic runs thereafter. Provide the generator manufacturer’ s operation and repair manuals, schematics, cut sheets and any other documentation required for generator operation, maintenance and repair. The documentation shall be in English.
d.Solar Power Assembly This work shall consist of mounting the solar panel(s) with mounting bracket and the battery cabinet on the CCTV , VDS or RWIS structure at heights specified by the Engineer. The installation locations of poles and structures may require slight adjustments to maximize sun exposure for the solar panel assembly. The Contractor shall obtain approval of final site location and orientation from the Engineer prior to installation. The solar power assembly shall be installed in accordance with the manufacturer’ s recommended installation procedures and the Plans. The Contractor shall mount and orient the solar panel(s) to 891801.04 maximize sun exposure in accordance with the manufacturer’ s recommendations. Solar panels shall be mounted at an angle to enable runoff of rain and snow. Power shall be provided from the solar power assembly to the controller cabinet by connecting to the UPS in the cabinet. No wires from the solar panel(s) to the battery and from the battery to the controller cabinet shall be exposed. Wires shall be installed in liquid tight flexible conduit, run inside a pole, or other method approved by the Engineer. The cost to furnish and install any conduit for the solar power assembly installation shall be included in the cost of the Solar Power Assembly. The solar power assembly shall be electrically grounded in accordance with manufacturer recommendations. The Contractor shall submit an installation plan to the Engineer for approval prior to mounting the solar power assembly equipment in the field. The installation plan shall include details of the wire routing and any associated conduit, as well as grounding. The Contractor shall provide the solar power assembly manufacturer’ s operation and repair manuals, schematics, cut sheets and any other documentation required for solar power assembly operation, maintenance, and repair. The documentation shall be in English.
e.Broadband Service Where leased line services are designated in the Plans, the Contractor shall coordinate with the utility provider for the installation of broadband telephone service (e.g. T -1, DSL, etc.) for each designated CCTV location on the Plans. The Contractor shall request approval from the Department a minimum of three (3) weeks prior to service installation. Telephone services shall be ordered from services available through the VITA statewide telecommunication contracts unless otherwise approved by the Engineer. The Contractor shall install the proposed equipment cabinets prior to requesting telephone service unless otherwise approved by the Engi - neer. The Network Interface Device (NID) shall be supplied and installed by the communications provider in coordination with the Contractor. The Network Interface Device (NID) shall be considered the demarcation point for the leased line communications installations. All cables and connectors up to the NID shall be provided by the communications provider. The Contractor shall be responsible for all interconnectivity of commu - nications from the NID to the equipment cabinet and for all coordination with the communications provider.
f.Electrical Service Install electrical service poles or service entrance panels at the locations shown in the Plans in conformance with Section 700. Electrical service will be measured and paid for in accordance with Section 700. Where electrical services are designated in the Plans, coordinate with the utility provider for the installation of the electrical service for each designated ITS device location on the Plans. Approval shall be requested from the Department a minimum of three (3) weeks prior to the service installation.
g.Warranty
1.General The manufacturers’ warranties on SPD and controller cabinets shall be fully transferable from the Contractor to the Department. The Contractor shall ensure that these warranties require the 892manufacturer to furnish replacements for any part or equipment found to be defective during the warranty period at no cost to the Department within 10 calendar days of notification by the Department. Warranty periods shall begin on the date of final acceptance by the Department.
2.Surge Protection Devices (SPD) The Contractor shall provide a SPD that is warranted by its manufacturer against any failures caused by electrical events for a period of not less than 5 years or the SPD device manufactur - er’ s standard warranty period, whichever is greater. The term “failure” for warranty replacement is defined as follows: • Parallel-connected, power-rated SPD units are considered in failure mode when any of the indicating lamps shows failure mode when power is applied to the terminals at the unit’ s rated voltage, or the properly functioning over-current protective device will not reset after tripping. • Series-connected, low-voltage power, data, or signal units are considered in the failure mode when an open circuit condition is created and no data/signal will pass through the SPD device. In the event that the SPD, including any component of the unit, should fail during the warranty period, the entire SPD shall be replaced by the manufacturer at no cost to the Department.
3.Controller Cabinet The controller cabinet, including all components, shall have a manufacturer’ s warranty cover - ing defects in assembly, fabrication, and materials for a minimum of two years from the date of final acceptance. If the manufacturer’ s warranties for the cabinet and components are for a longer period, those longer period warranties will apply.
4.Communications Hub The communications hub with UPS, generator and all associated components shall have a manufacturer’ s warranty covering defects in assembly, fabrication, and materials for a mini - mum of two years from the date of final acceptance. If the manufacturer’ s warranties for the communications hub and components are for a longer period, those longer period warranties will apply.
5.Solar Panel Assembly The solar power assembly and all associated components shall have a manufacturer’ s warranty covering defects in assembly, fabrication, and materials for a minimum of two years from the date of final acceptance. If the manufacturer’ s warranty(ies) for the solar power assembly are for a longer period, those longer period warranties will apply.
h.Testing The Contractor shall provide a 10-day advance notice of dates and times scheduled for tests that require the presence of Department’ s representative. The Contractor shall provide labor, equipment, fuel, and consumables required for the specified tests.801.04 893 1. Electrical Equipment Tests Low-voltage cable insulation integrity tests shall be performed for cables connecting the generator breaker to the automatic transfer switch. Low-voltage cable, complete with splices, shall be tested for insulation resistance after the cables are installed, in their final configuration, ready for connection to the equipment, and prior to energizing. The test voltage shall be 500 volts dc, applied for one minute between each conductor and ground and between all possible combinations conductors in the same trench, duct, or cable, with all other conductors in the same trench, duct, or conduit. The minimum value of insulation shall be equal to or greater than manufacturer’ s requirements. Cabinet electrical, equipment grounding, and solar charging equipment shall be tested in accordance with manufacturer recommendations.
2.Inspection for Generator Installation and Setup The following inspections shall be performed by the Contractor, after complete installation of the engine-generator set and its associated equipment, and prior to startup of the engine- generator set. Checks applicable to the installation shall be performed. The results of these physical inspections shall be documented by the Contractor and submitted to the Engineer. The Contractor shall present manufacturer’ s data for the inspections designated at the time of inspection. Inspections shall verify that equipment type, features, accessibility, installation, and condition are in accordance with the manufacturer’ s recommendation\instructions and the contract specification requirements. Inspect the following: • Coolant fill level • Coolant line connections • Coolant hoses • Combustion air filter • Oil filter • Oil fill level • Oil line connections • Oil lines • Fuel type • Fuel level • Fuel-line connections • Fuel lines • Fuel filter • Battery-charger connections801.04 894 • Wiring and terminations • Instrumentation • Hazards to personnel • Base • Exhaust system • Enclosure • Engine & generator mounting bolts (proper application) • Inspect physical and mechanical condition of the generator set • Verify correct connections • Verify that all required grounding and shorting connections provide good contact • Visually inspect and check engine and generator mounting bolts for tightness and visible damage.
3.Inspections for Cabinet Inspections shall verify that equipment cabinet type, features, accessibility, installation and condition, and internal wiring/labeling are in accordance with the contract specification requirements.
4.Safety Run Tests for Communication Hub Assembly Generator • Perform and record (document) engine manufacturer’ s recommended pre-starting checks and inspections. Include as a minimum: checking of coolant fluid, fuel, and lube-oil levels. • Start the engine, record the starting time, conduct and record engine manufacturer’ s after- starting checks and inspections during a reasonable warm-up period. • Activate the manual emergency stop switch and verify that the engine stops. • Start the engine, record the starting time, make and record engine manufacturer’ s after- starting checks and inspections and operate the engine generator-set at no load until the output voltage and frequency stabilize. • Operate the engine generator-set for at least 1 hour under actual load. If the generator fails to start or run in accordance with manufacturer’ s provided data, the Contractor shall notify the Department.
5.Functional Acceptance Tests for Communication Hub Assembly Generator The tests shall be performed at each site. Upon successful test completion, the Contractor shall provide the Engineer with a written test report within 15 calendar days of test completion showing the tests performed, date of testing, and the results of each test. The 801.04 895report shall include the completed test data and certification that the test results fall within the manufacturer’s recommended limits and meet the specified requirements performance. The Engineer reserves the right to witness final acceptance tests. Testing shall include but not be limited to verifying proper functioning of the following automatic and manual operations. The Contractor’ s testing shall include but not be limited to: • Loss of Utility: Initiate a normal power failure with connected load. Record time delay on start, cranking time until engine starts and runs, time to come up to operating speed, voltage and frequency overshoot, and time to achieve steady state conditions with all switches transferred to emergency position. • Return of Utility: Return normal power and record time delay on retransfer for each automatic transfer switch, and time delay on engine cool down and shutdown. • Manual starting • Emergency stop
i.Training/Demonstration Upon completion of the work and at a time approved by the Engineer, the Contractor shall provide training by a qualified instructor to Department personnel in the proper operation and mainte - nance of the equipment. Department personnel shall receive training comparable to the equipment manufacturer’ s factory training. The minimum training shall be one 2 hour instruction session for generator system monitoring and cabinet electrical/mechanical equipment, one 2 hour instruction session for generator and general cabinet equipment operation, and one 2 hour instruction session for generator and cabinet maintenance, where included in the contract. One 2 hour instruction minimum training session shall be required for solar power systems operation and maintenance, where solar powered systems are included in the contract.
801.05 Measurement and Payment
The work specified for surge protection devices will not be paid for directly, but will be considered incidental to the installation of ITS devices and systems requiring their installation as specified herein. No separate payment will be made for the conduit or other incidental items necessary to provide a fully functional deployment. ITS Controller cabinet will be measured in units of each and will be paid for at the contract unit price per each. This price shall include furnishing, installing and testing of all equipment and materials, and for all tools, labor, hardware, supplies, support, personnel training, shop drawings, documentation, and incidentals necessary to complete the work. The unit price for pole mounted and ground mounted controller cabinets shall include the cost to furnish and install a concrete technician pad (4’ wide x 3’ long x 4” deep) on the front and back sides of the cabinet. Concrete foundations for controller cabinets will be measured in units of each and will be paid for at the contract unit price per each in accordance with Section 700. Communications hub will be measured in units of each and will be paid for at the contract unit price per each. This price shall include furnishing, installing and testing of all equipment and mate -801.05 896rials, and for all tools, labor, hardware, supplies, support, personnel training, shop drawings, docu - mentation, and incidentals necessary to complete the work. The unit price for communications hubs shall include the cost of the cabinet, UPS, generator, fuel tanks, transfer switch, bollards, foundation air conditioner, generator/fuel tank foundation, providing design and any associated items for a complete installation. A (4’ wide x 3’ long x 4” deep) technician pad on the front and back sides of the hub shall be included in the contract unit price for each ITS communications hub. Where designated on the Plans for standard ITS controller cabinets, the cost of the Uninterruptible Power Supply (UPS) will be measured and paid for separately in accordance with Section 802. For Dynamic Message Sign (DMS) locations, UPS will be measured and paid for in accordance with Section 804 as applicable to the contract. Generator assembly , when specified separately, will be measured in units of each and will be paid for at the contract unit price per each. This price shall include furnishing, placement, and testing of all equipment and materials, and for all tools, labor, hardware, supplies, support, personnel training, shop drawings, documentation, and incidentals necessary to complete the work. Solar power assembly (CCTV), (VDS), or (RWIS) will be measured in units of each and will be paid for at the contract unit price per each. This price shall include furnishing, installing and testing of all equipment and materials, and for all tools, labor, hardware, supplies, support, personnel training, shop drawings, documentation, and incidentals necessary to complete the work. The unit price for solar power assemblies shall include the cost of the solar panel, mounting bracket, batteries, battery cabinet, and any associated items to provide backup power to the designated ITS device(s) and/or controller cabinet. Broadband service will be measured in units of each and will be paid for at the contract unit price per each. The price bid shall be full compensation for the telephone service network interface device, coordinating with VITA and the service provider, mounting, fittings, miscellaneous cabling, installation and testing, documentation, and for all materials, tools, labor, and incidentals necessary to complete the work. Network devices (e.g. routers, switches, etc.) will be measured and paid for separately. Payment will be made under: ——————————————— ———————————————Pay Item Pay Unit——————————————————————————————ITS Controller cabinet Each ITS Controller cabinet w/ sunshields Each Communications hub Each Generator assembly Each Solar power assembly (CCTV) Each Solar power assembly (VDS) Each Solar power assembly (RWIS) Each Broadband service Each——————————————————————————————801.05 897SECTION 802—UNINTERRUPTIBLE POWER SUPPL Y FOR ITS APPLICATIONS
802.01 Description
This work shall consist of furnishing and installing an Uninterruptible Power Supply (UPS) assembly at ITS asset locations consisting of CCTV Cameras, Vehicle Detectors, and Roadway Weather Information Systems in accordance with these specifications and as shown on the plans or as directed by the Engineer.
802.02 Equipment
The UPS shall be specifically designed for commercial ITS applications. UPS shall be UL 1778 and FCC, Part 15, Cat. B approved. A UPS assembly shall be furnished and installed in all assets designated in the Plans to provide complete non-interruptible power protection, voltage regulation and surge and spike protection for electrical and communication components. The UPS assembly shall be a commercially available package containing a UPS with batteries, surge suppression, LED indicators, customizable output relays and input contacts, and network management cards (IP addressable) wiring connectors, software, mounting brackets, and cables. The UPS shall be provided with remote monitoring, control functions, and a software/firmware package that is web-based and, at a minimum, provides the ability to determine in real time the status of the commercial power (on-off), the status of the available UPS backup battery time at the rated UPS load (Hours/Minutes), on or off backup, and errors. The UPS shall be provided with a standard RJ-45, 10/100 network interface and a Cat5e jumper for interfacing to the Layer 2 Managed Field Ethernet Switch (MFES) located in the ground/pole mount ITS controller cabinet. The UPS shall be of sufficient design and capacity to fully operate all devices and communications equipment for a minimum of three (3) hours. The Contractor shall determine the appropriate size/ capacity of the UPS. In no case shall the UPS be smaller than 2KV A. The Contractor shall supply the calculations used to determine the appropriate size and capacity of the UPS and all software and hardware manuals at the time of catalog cut submission. The Contractor shall be responsible for installing the software, testing all functions, and setting the initial UPS parameters. The UPS shall instantly transfer the ITS controller cabinet to the battery back-up mode in the event the main AC power source goes offline and shall conform to the following minimum requirements: • The UPS size shall be suitable for installation in the ITS controller cabinet in which it is to be installed • LED status indicators for “On-line”, “Battery On”, “Replace Battery”, and “Overload” The Contractor shall provide services to setup each UPS assembly as defined herein for installation in each cabinet. The Contractor shall provide Uninterruptible Power Supply equipment and components meeting the following requirements:
a.Mechanical Specifications: The input line shall be a NEMA 5-20P plug with a 6 foot cord. It shall have five 5-15R (5 IEC 320) Standard backup receptacles and one 5-15R (5 IEC320) Standard surge-only receptacle.802.02
Source: Virginia Road and Bridge Specifications, 2020 Edition. Pages 905–924 of 1,065.