American Audio VELOCITY - REV 4-05 Instructions d'exploitation télécharger pdf (Page 20)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-15 Revision 4: 05/09/12

Metro Baseline Re-Baseline: 04/29/10

appropriate for the length of main conduit run(s). Conduit arrangement

should use main run to each general location of equipment with branch runs

continuing between junction box and each TVM/SAV location.

Dedicated 120V, 60 Hz, and 20 amp circuits shall be provided at station

power panel for each fare collection equipment item. Separate dedicated

circuits shall be provided for each TVM, each SAV and each fare gate

console, and be UPS powered to the UFS station network equipment power

supplies inside the station communications room or the cabinet. Circuits for

TVMs, SAVs, and fare gates shall be essential load. The circuit for UFS

station network equipment shall be critical load and shall be provided directly

from the communication UPS power panel, terminated at duplex outlet

adjacent UFS network equipment rack location. Each circuit shall be labeled

on the power panel. Three-conductor (Line/Neutral/Ground) circuit with

dedicated neutrals shall be provided from power panel to each equipment

(TVM, SAV, or fare gate) location. Power conductors shall be #12 AWG

minimum, XHHW-insulated, and sized per the National Electrical Code

(NEC). A six-foot wiring pigtail shall be provided at each TVM, SAV, and

fare gate console location to allow for connection of power conductors to

equipment.

Power wiring shall be kept separate of communications cabling and shall be

run continuously, without splices, from source to each TVM, SAV, and fare

gate console location including identified future locations.

5. Communications Equipment

Each station will require a station communications room or the cabinet,

within or near the station facility for fare collection equipment personnel to

install required station network equipment. The internal space requirements

to support the UFS station fare collection equipment (TVMs/SAVsfare gates)

communication system is 48” of rack space for vertical rack mounting on

standard 19” racks.. The rack space for UFS station network equipment shall

include duplex outlet on circuit dedicated to same. Station network

equipment will consist of hubs, routers, power supplies, fiber optic network

equipment, and copper/fiber cabling; and will interface to the Cable

Transmission System at same location to support data communication

between TVMs, SAVs,and fare gates and the Central Data Collection

System (CDCS) computer located on second floor of the Metro Union

Station Gateway (USG) building using Fast Ethernet (10/100 Base T)

connectivity. Two dark fiber optic strands, daisy chained at each station,

shall be provided for fare collection equipment communications path to USG

as well as space and power for future fiber optic multiplexing equipment in

the communication room or the cabinet. In addition, a minimum 2”

communication conduit connection shall be provided to local phone

company point of connection to allow local phone company circuit

termination inside the communication room or the cabinet. The

communication room or the cabinet shall also be equipped with appropriate

air conditioning to keep equipment within their specified temperature range

for performance.

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American Audio VELOCITY - REV 4-05 Instructions d'exploitation Page 20

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