American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 91)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-86 Revision 4 : 05/09/12

Metro Baseline Re-Baseline: 04/29/10

opposing signals show the most restrictive aspect. The signal system shall

furthermore prevent any trains simultaneously entering the same block section from

different directions or tracks.

Independent of any route locking function, the movement of any powered switch shall be

prevented when track occupancy is detected in the track section in which that switch is

located.

The switch locking function shall have 5 seconds loss of shunt protection. However,

sectional release shall be provided where practicable, to support headways through

junctions.

Any failure, including loss of power, to any part of an interlocking shall not result in the

premature release of any locking function.

9.4.5.12 Track Switches

All track switches shall be powered and interlocked. They shall normally be set and locked

automatically. All route-setting functions defined in Section 0 shall apply. An over-switch

(OS) track circuit shall be provided, occupation of which shall prevent powered movement of

the switch.

A manual switch setting facility shall be provided at powered switch locations. The placing of

a powered switch into manual operation shall result in loss of indication. Signals shall revert

to their most restrictive aspect in the event of loss of indication of switch position.

Switch and lock mechanisms shall meet or exceed the recommendations of the AREMA

Manual of Recommended Practices–Signals. The electrical, electromechanical or

mechanical locking equipment shall prevent switch point movement when the switch points

are in full normal or full reverse position.

Parts of switch operating layouts shall be interchangeable between similar layouts.

9.4.5.13 Traction Return Bonding

The design shall provide impedance bonds and running rail continuity and cross bonding

sufficient to comply with the traction return power requirements.

The design shall ensure that no single failure, including broken rail or loss of a bonding

cable, shall result in loss of traction return capability through loss of continuity or failure due

to overheating.

Traction power return capability shall be provided on all tracks regardless of whether OCS is

present or not.

9.4.5.14 Event Recorders

AREMA recommended event recorders shall be provided for vital systems to record

changes in state of the vital systems and their devices.

Each recorder shall be capable of recording up to 1 week of events. Each recording device

shall provide access to the data through a standard USB interface port.

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 190 191

Keine Kommentare

American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 91