Section 632 Section 632 632-E: Single-user Workstation Signal Software License - per each 632-F: Single-user Server Signal Software License - per each 632-G: Malfunction Management Unit - per each 632-H: Card Rack, ___ Position - per each 632-I: GPS Clock - per each SECTION 633 - UNINTERRUPTABLE POWER SUPPLY
633.01 Description. This section describes the minimum requirements for battery backup
systems including uninterruptable power supply and power conditioner.
633.01.1 Uninterruptable Power Supply (UPS). If required by the contract documents
or design plans, the cabinet assembly shall be provided with a UPS System. The UPS system shall be a turn-key, true on-line, solid state, microprocessor controller power conditioner and/or UPS system. The system shall continuously regenerate and condition the AC sine wave, where 100% of the power to the load, whether on utility or batteries, is generated by the on-board inverter. The UPS system shall be capable of operating, up to the rated power levels, in extreme environments (-40°F to +165°F) with existing cabinet equipment, including any and all signal heads whether Incandescent, LED or Neon.
633.02 Materials. The UPS system shall consist of three (3) major components: the
Electronics Module, the Manual By-pa ss Switch, and the Battery System.
633.02.1 Electronics Module. The Electronics Module shall be provided as follows:
True Sinewave, Micro Processor controlled high frequency inverter. A temperature compensated battery charger. Local and remote control of UPS functions. Local and remote communicates capabilities. Utility By-pass Switch for by-passing the UPS for repair or removal.
633.02.2 The Manual Bypass Switch. A Manual By-pass Switch shall be provided as
follows: The UPS shall incorporate an automatic, internal safety by-pass capability and a Manual By-pass Switch. An optional interface connector shall be avai lable that allows an external generator or vehicle inverter to supply utility power when commercial utility has failed. The UPS shall supply 120 VAC, 60 Hz, True Sinewave power when connected to either a generator or digital inverter power system
633.02.3 The Ba ttery System. The battery shall be comprised of extreme temperature,
deep cycle, AGM-VRLA (Absorbed Glas s Mat – Valve Regulated Lead Acid).
633.02.4 UPS Operation.
633.02.4 1--UPS System. A UPS System shall be provided as follows:
1.The Unit shall be capable of on-site programming without the use of attached computers.
2.On-line technology shall be supported and 100% of the load shall flow through the inverter 100% of the time to isolat e and protect the a ttached equipment.
3.Power connection shall be made to the front or back of the UPS chassis to support NEMA cabinetry.
4.The UPS system shall be capable of providing continuous, fully conditioned and regulated sinusoidal (AC) power to select ed devices such as signal controllers, modems, communication hubs, NTCIP adapters and video equipment.
5.The UPS system shall be sized with a maximum rating to be capable of supporting all cabinet systems, regardless of power factor rating, without overdriving the poorer power factor LED heads whic h may cause early degradation, low luminosity or early signal failure and meeting minimum run time requirements during power loss/failure of commercial power.
6.Upon loss of utility power, the UPS system shall switch to battery power. In cases of UPS system failure, while on utility, the UPS system will auto-by-pass and remain in that mode until repaired. Should the battery power deplete such that it is not sufficient to power the equipment, the unit will auto-shutdown and return to normal operating mode once the utility power is restored.
7.The By-pass Switch shall enable remova l and replacement of the UPS system without shutting down the traffic control system (i.e. “hot swap” capability). The UPS system shall support generator input without going to batteries.
8.The UPS system shall be capable of starting when no utility AC is available, i.e. starting while on batteries (“cold starting”),
9.Existing cabinet Flasher Modules and Fl ash Transfer Relays shall be utilized.
10.To facilitate emergency crews and polic e activities, the UPS system shall be compatible with the police panel functions.
11.The UPS system shall not duplicate or assu me Flash Operation or Flash Transfer Relay functions.
12.The UPS system shall deliver 120 VAC output when the AC input is between 75 to 175 VAC without going to batteries.
13.NEMA Style Cabinet mounting method shall be shelf mounted.
633.02.4 2--System Batteries. The system batteries shall meet the following:
a.The battery system shall consist of ex treme temperature, deep cycle, Gel or AGM-VRLA (Valve Regulated Lead Acid) ba tteries that have been field tested.
b.The battery system may consist of one (1) or more strings (typically four (4), six
6.or eight (8) batteries per string) of extreme temperature, deep cycle, Gel or AGM VRLA (Valve Regulated Lead Acid) batteries.
c.Batteries shall be capable of operating at extreme temperatures from -40°F to +165°F.
d.The batteries shall be provided with appropriate interconnect wiring and corrosion-resistant mounting trays and/or brackets.
e.The interconnect cables shall be prot ected with abrasion-resistant nylon sheathing.
f.The interconnect cables shall connect to the base module via a quick-release connector.
g.Battery construction shall include heavy duty, inter-cell connections for low- impedance between cells, and heavy duty plates to withstand shock and vibration.
h.The top cover shall use tongue and groove construction and shall be epoxied to the battery case for maximum strength and durability.
633.02.4 3--Electrica l Specifications.
633.02.4 3.1--Input Specification. The following are input electrical specifications.
Nominal Input Voltage 120 VAC, Single Phase Input Voltage Range 75 VAC to 155 VAC (without drawing energy from batteries) Input Frequency 50 or 60 Hz Input Configuration 3-Wire (Hot, Neutral & Ground) Maximum Input Current 30 amps
633.02.4 3.2--Output Specification. The following are output electrical specifications.
Nominal Output Voltage 120 VAC, Single Phase Power Rating 1.25 - 2.0 KVa continuous watts Output Frequency 50 or 60 Hz Output Configuration Keyed, connectors and duplex receptacle Output Wave Form True Sine wave Fault Clearing Current limit and automatic shutdown Short Circuit Protection Current limit and automatic shutdown Efficiency 85% at full load
633.02.4 4--UPS Electronics Module, Physical Specifications. The following are the
physical specification for the UPS. Height: 3.5” to 5.25” Depth: 8.75” to 10.5” Width: 15.5” to 19”
633.02.4 5--Environ mental Specifications. The UPS system shall meet or exceed NEMA
temperature standards from -40°F to +165°F. The UPS system shall be field proven to meet or exceed NEMA temperature standards.
633.02.4 6--Battery Specifications.
The UPS system batteries shall be field te sted and proven to meet or exceed NEMA temperature standards of -40°F to +165°F. Hydrogen gas emissions shall meet Mil-Spec, MIL-B-8565J.
633.02.4 7--Communications, Controls and Diagnostics. The UPS system shall provide
standard Alarm Function Monitoring indicating loss of utility power, inverter failure, low battery condition and USB connectivity for system up/down loads. An RS232 or USB Interface shall be provided that allows full interactive remote computer monitoring and control of the UPS functions. The UPS shall have an Ethernet communica tion interface for user configuration and management. A Confirmation Light shall be included on th e external top of the cabinet enclosure.
633.02.4 8--Warranty. The UPS System and Cabinet Assembly shall be protected by a
minimum 2-year warranty.
633.02.4 9--Options. The UPS shall include an optional SNMP interface that provides
Web-based Ethernet access.
633.03 Construction Requirement. The Contractor shall be responsible for all testing
and documentation required for establishi ng approval and acceptance of the product. Field tests shall be perform with various ITS devices as noted in design plans to verify that each device operates optimally. As a minimum, the following tests shall be conducted:
1.Verify Output (Amp- Hours)
2.Verify Daily load requirement (Amp-Hours)
3.Verify Loss of Load Probability (LOL P) of the designed power supply
4.Verify the Battery Reserve Days
5.Verify the Average Battery State of Charge
6.Verify the statistical Interval to Loss of Load
633.04 Method of Measurement . Uninterrupted power supply of the type specified will
be measured as a unit per each.
633.05 Basis of Payment. Uninterrupted power supply, m easured as prescribed above,
will be paid for at the contr act unit prices per each, which pr ice shall be full compensation for all labor, tools, materials, equipment, furnishing all materials and installation, all modules, battery(s), connection hardware, grounding, wiring, all related appurtenances as necessary, and all incidentals necessary to prov ide a UPS service to each site. This price shall also include coordination effort s necessary to complete the work. Payment will be made under 633-A: Uninterruptable Power Supply per each SECTION 634 - TRAFFIC SIGNAL AND ITS EQUIPMENT POLES
634.01 Description . This work consists of furnishing all component materials required
to form completed independent traffic signal equipment poles and extensions of the types specified for assembling, constructing, erecting and installing same in conformity with these specifications to ensure support poles in accordance with the design(s) and at the lines and grades shown on the plans or as directed by the Engineer. This work also consists of furnishing and installing support poles and foundations for Intelligent Transportation Systems (ITS) equi pment. This work shall consist of assembling, constructing, erecting and installing ground mounted equipment poles with foundations, and equipment poles attached to existing or proposed structures, in conformity
Source: Mississippi Standard Specifications for Road and Bridge Construction, 2017 Edition. Pages 553–555 of 1,113.