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 898If the UPS does not meet the minimum receptacle specifications above, the Contractor may opt to supply a UPS with a separated Power Distribution Unit (PDU). The standalone PDU shall meet the Electrical and Communications specifications below (except where noted), as well as these additional requirements:
1.Physical Specifications The standalone PDU shall be rack or DIN rail mountable and shall not be larger than 2 rack units in size. The standalone PDU input line shall be a NEMA 5-20P with a 5’ cord (min.) or a terminal block connection compatible with the UPS connections.
2.Environmental Specifications The PDU shall have the following minimum characteristics: • Operating Temperature: -34 to 60°C (-30 to 140°F) • Operating Relative Humidity: 10 to 80%
b.Electrical Specifications The acceptable input voltage shall be 75-164 V AC. The nominal input frequency shall be between 44 and 66 Hz, auto-selectable. Input protection shall be accomplished by resettable circuit breakers. UPS shall also conform to the following requirements: • Power Output: 115 V AC single phase 60 Hz • Output Connections: six (6) NEMA 5-15R • Input Connections: • NEMA 5-20P • Surge protection shall be rated at 320 joules. • Line filtering shall be full time multi-pole noise filtering (Does not apply to PDU) • 0.3% IEEE surge let through, zero clamping response time meeting UL-1449 Brown-out voltage protection, 95 V AC, user adjustable • Capable of recharging the batteries to 90% capacity within twenty-four (24) hours maximum (Does not apply to PDU)
1.UPS Controller/Power Regulator The UPS shall be have a transfer time of 10 milliseconds maximum. The UPS shall produce pure sine wave outputs that automatically conditions and stabilizes the line voltage. The UPS shall incorporate line-interactive voltage regulation that protects against all voltage irregularities. The UPS shall include EMI/RFI filtering to eliminate line noise and harmonics.
2.Battery External battery packs shall be supplied by the manufacturer of the UPS. The battery packs shall be 12 to 48 VDC and a minimum of 14.4 AH. The battery housing shall be rack mounted 802.02 899in a standard 19 inch rack. The external battery unit shall incorporate an internal charger with an unlimited runtime. • Battery output shall have selectable voltages of 108, 113, and 117 V AC. The on-line operation output voltage for the standard 115 V AC unit shall be 105-128 V AC. • The on-battery wave shape shall be true sine wave. • Typical recharge time shall be 2 to 5 hours from total discharge • Batteries shall be user replaceable and be maintenance free, leak-proof, sealed lead acid with suspended electrolyte with a minimum of three (3) year lifetime.
c.Environmental Specifications The UPS shall have the following characteristics: • Operating Temperature: -35 to 74°C (-31 to 165°F) • Operating Relative Humidity: 10 to 95%
d.Physical Specifications The UPS shall be no more than 16” deep and rack-mountable in a standard 19 inch wide rack.
e.Communication Standards The UPS unit shall include an Ethernet port and be supplied with a data cable and all software necessary to interface with existing Department platforms and protocols (SNMP , Telnet).
f.Management Capability The UPS supply access and monitoring shall be accomplished by remotely connecting through a Web browser and/or IP-based Telnet system.
802.03 Procedures
The Contractor shall install and integrate UPS components in the respective Communication Hub Cabinets and ITS Controller Cabinets in accordance with the electrical requirements for the respective asset as shown in the Contract.
a.Testing The Contractor shall be responsible for providing training and documentation to the Engineer and Department staff on logging in, configuration of IP addresses, and alarm capabilities. Test procedures shall be approved by the Department prior to commencement of testing. The Contractor shall perform testing at each site. Upon successful test completion, the Contractor shall provide the Engineer with a written test report within 15 calendar days of the date testing is completed, showing the tests performed and the results of each test. The report shall include the completed test data and certification that the test results fall within the manufacturer’ s recommended 802.03 900limits and meet the specified performance requirements as stated herein and in the contract. The Contractor shall notify the Engineer at least one week in advance of testing so that the Engineer can be present to witness final acceptance tests. Testing shall include but not be limited to verifying proper functioning of the following automatic and manual operations. Testing shall include but not be limited to:
1.Loss of Utility Power Initiate a normal power failure with connected load. Record voltage, frequency overshoot, and if components/loads are operating within designated thresholds. Confirm battery levels are within manufacturer’ s specification for initial installation. Verify that network management transmits loss of utility power alert to central software. Run on battery power for an extended period of time (e.g. at least 3 hours).
2.Return of Utility Power Return normal power and record time to recharge batteries using network management communications. Verify that return of utility is recorded/transmitted by network management.
b.Warranty The UPS shall carry a manufacturer’ s warranty of no less than 3 years. The battery packs shall carry a warranty of no less than 3 years. Warranty periods shall begin on the date of final acceptance of all work under the contract by the Department.
802.04 Measurement and Payment
Uninterruptible power supply for ITS Controller Cabinet (ITS-CC) will be measured in units of each and will be paid for at the contract unit price per each. The price shall include furnishing and installing the complete Uninterruptible Power Supply including batteries (with the number of batteries as recommended by UPS manufacturer), surge suppression, LED indicators, separated PDU (if opted for), customizable output relays and input contacts, network management cards (IP addressable), cables and cabling, software, testing, training, certification, complete documentation, and all incidental items necessary for a complete and fully functioning uninterruptible power supply. No additional payment will be made for UPS used in Dynamic Message Signs and in the Communications Hub. UPS for each of these type installations shall be incidental to the items as noted in Section 801 and 804, respectively. Payment will be made under: —————————————————————————————————Pay Item Pay Unit————————————————————————————————— Uninterruptible power supply (ITS-CC) Each —————————————————————————————————802.03 901SECTION 803—CCTV VIDEO EQUIPMENT
803.01 Description
This work shall consist of furnishing and installing a closed circuit television (CCTV) camera (either analog or digital), digital video encoder, decoder, and mounting poles. The installed equipment shall provide unobstructed video images of the roadway, traffic, and other current conditions around a roadside CCTV field site, respond to camera control signals from the operator, and ensure video images can be transmitted to remote locations for observation.
803.02 Materials
a.Concrete shall be Class A3 conforming 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 accor- dance to Section 407.
d.Electrical items shall conform to Section 238 and this specification.
e.Galvanizing shall conform to Section 233.
f.Structural Steel shall conform to Section 226.
g.Dissimilar metals, when used together, shall have the contact surfaces isolated with an approved durable nylon washer, gasket, or other approved isolation material to prevent corrosion.
803.03 Equipment
a.Camera General Specifications – The Contractor shall furnish a closed circuit television camera system meeting the following requirements:
1.Electrical Specifications The CCTV camera system shall operate using a nominal input voltage at the cabinet of 120 volts alternating current (V AC). If the camera or any camera-related ancillary device requires operating voltages other than 120 V AC, appropriate voltage converters shall be provided. Ground loop isolators shall be provided and installed for affected each CCTV or any camera-related ancillary device. Power consumption shall not exceed 125 watts.
2.Environmental Specifications The camera housing shall be a weather-tight enclosure carrying a National Electrical Manufacturer’ s Association (NEMA) 4X/IP-66 rating, or better. The non-pressurized dome- type and non-dome type housings shall be vented with a thermostat-controlled heater and blower. The pedestal housing for a non-dome type camera shall carry a NEMA 4x/IP-66 rating (or better).803.03
Source: Virginia Road and Bridge Specifications, 2020 Edition. Pages 925–928 of 1,065.