2010 Construction and Material Specifications - Ohio Department of ...

733.03
5. Surge Protection.
a. Furnish surge protection on pedestrian and detector inputs.
Furnish three terminal surrestors equivalent to EDCO models SRA-6LCA, SRA-
6LCB, or SRA-6LC.
b. Protect the cabinet’s incoming power lines with an EDCO
SHA1250 or approved equal surge protector in lieu of the CalTrans specified surge
protection. A plug-in base shall be used to hold the device. All wiring
connections shall be made to the base, and appropriate cabinet clearances
maintained, to allow the SPD module to be relaced by hand without the use of
tools.
6. Conflict Monitor. Ensure that the conflict monitor unit was tested and
accepted according to Supplement 1076.
a. Materials and Warranties. Furnish electrical parts, switches,
and other elements of the installation that are of ample capacity to carry the
required current without excessive heating or drop of potential.
Use standard industrial quality components (integrated circuit
chips, transistors, diodes, resistors, capacitors, etc.) wherever possible. Clearly
identify these components with the original identification. Designate the other
vital information such as voltage polarity, emitter or collector terminals, pin
locations, etc., by an approved industrial procedure. Ensure that the major items or
assemblies of equipment bear a nameplate, indelible marking, or brand that
identifies it as to type, model, catalog number, and manufacturer.
Transfer that manufacturers’ guarantees or warranties to the
Department upon delivery and acceptance of the equipment. Ensure that all
conflict monitors are warranted for a period of 24 months or for the manufacturer’s
standard warranty period, whichever is greater, for parts and labor from date of
shipment to the project or the ODOT Signal Shop. Ensure that each unit has a
permanent label or stamp indicating the date of shipment.
b. General Requirements.
(1) Minimum Standards. This specification establishes
minimum standards for Conflict Monitoring Devices designed for use in Model
332 and 336 Traffic Signal Controller Cabinets supplied to the Department.
(2) Indicator Lights. Furnish indicator lights that are waterclear
(not colored or diffused lenses), ultra- bright light emitting diodes (LED),
whose states are clearly readable in direct sunlight. Ensure that each conflict
monitor channel provides separate red, yellow, and green LEDs.
(a) Furnish a GREEN AC POWER indicator light.
(b) Arrange indicator lights in a vertical pattern with
FAULT status lights as the upper indications and the output channel lights as the
lower indications [See 733.03.C.6.c.(1) and 733.03.C.6.c.(9)]. An acceptable
alternative is to provide a single fault indication and a supplemental display that
clearly indicates the fault type.
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