System Specifications
System specifications define the technical and operational requirements for railway signaling, telecommunications, and control systems. These specifications ensure that the designed systems meet safety, efficiency, and interoperability standards while integrating seamlessly with existing and future railway infrastructure.
01.
Objectives of System Specifications
- To establish clear technical guidelines for system design and implementation.
- To ensure compatibility with national and international railway standards.
- To define performance metrics, safety parameters, and operational requirements.
- To provide a framework for procurement, testing, and commissioning of railway systems.
02.
Key Components of System Specifications
1. Signaling System Specifications
- Type of Interlocking: Relay-based, electronic interlocking (EI), or centralized traffic control (CTC).
- Track Circuiting: Audio frequency track circuits, axle counters, and block proving systems.
- Automatic Train Control (ATC): Integration of ATP, ATO, and ETCS for train protection.
2. Telecommunication System Specifications
- Fiber Optic and Digital Transmission: Backbone for data and voice communication.
- Train-to-Ground Communication: GSM-R, LTE-R, or TETRA-based radio networks.
- Control Center Communication: SCADA, PIS, CCTV, and PA system integration.
3. Power Supply and Backup Systems
- Primary Power Source: 25kV AC (overhead) or 750V DC (third rail) for traction power.
- Backup Systems: UPS, diesel generators, and battery backup for signaling and communication.
- Earthing and Lightning Protection: Grounding requirements for safety compliance.
03.
Importance of System Specifications
- Ensures Standardization: Facilitates interoperability between different railway systems and vendors.
- Improves Safety and Reliability: Establishes fail-safe measures and performance benchmarks.
- Optimizes Cost and Implementation: Defines clear procurement requirements, reducing risks of design changes.
- Facilitates Future Upgrades: Provides a foundation for system scalability and modernization.
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