Podcast
Questions and Answers
What type of lightning protection device is required at the output of power supply equipment?
What type of lightning protection device is required at the output of power supply equipment?
Which of the following is NOT a requirement for earthing wires as outlined for electronic interlocking?
Which of the following is NOT a requirement for earthing wires as outlined for electronic interlocking?
What is the recommended earth value for earthing in electronic interlocking?
What is the recommended earth value for earthing in electronic interlocking?
Which color is recommended for earth wires to ensure quick identification?
Which color is recommended for earth wires to ensure quick identification?
Signup and view all the answers
What is an ideal characteristic of the earth wire from the surge protection device to the main earth terminal?
What is an ideal characteristic of the earth wire from the surge protection device to the main earth terminal?
Signup and view all the answers
What should be done according to the approved system maintenance manuals for Electronic Interlocking systems?
What should be done according to the approved system maintenance manuals for Electronic Interlocking systems?
Signup and view all the answers
Where is the Maintenance Terminal for the Electronic Interlocking system located?
Where is the Maintenance Terminal for the Electronic Interlocking system located?
Signup and view all the answers
What should be updated on the centralized server for Electronic Interlocking systems?
What should be updated on the centralized server for Electronic Interlocking systems?
Signup and view all the answers
What is necessary for periodic testing of redundant systems?
What is necessary for periodic testing of redundant systems?
Signup and view all the answers
Which standards are applicable to the development and implementation of Electronic Interlocking?
Which standards are applicable to the development and implementation of Electronic Interlocking?
Signup and view all the answers
What must be done to protect electrical and electronic signaling equipment from lightning?
What must be done to protect electrical and electronic signaling equipment from lightning?
Signup and view all the answers
What is stated about equi-potential bonding in lightning and surge protection?
What is stated about equi-potential bonding in lightning and surge protection?
Signup and view all the answers
Which of the following systems must be grounded and protected from lightning surges?
Which of the following systems must be grounded and protected from lightning surges?
Signup and view all the answers
Study Notes
Electronic Interlocking System Maintenance
- Maintenance is performed per approved manuals
- A general maintenance schedule is provided in Annexure 21-MS3
- Stations with high traffic/speed may require more frequent inspections
- Maintenance terminals are provided in Signal Technician Duty rooms
- Latest station database files are kept updated on a centralized server
- Redundant systems are periodically tested, with checksum verification
Lightning and Surge Protection
- Electrical and electronic signalling equipment needs protection from lightning and surges
- Protection follows National Building Code 2016 (NBC 2016) and IEC 62305 standards
- Equipment like Electronic Interlocking Installations, Object Controllers, BPAC Systems, Axle Counter Systems, and Integrated Power Supply Systems need grounding
- Equipotential bonding protects all equipment in Signal Equipment Rooms
- External Lightning Protection (Class I, II, and III devices) must be provided
- Specific device types (Class B/Type-I, Class C/Type-II, Class D/Type-III) protect different equipment areas
- Earthing must meet specifications, drawings, and codes
- Perimeter earthing around Electronic Interlocking rooms is recommended
- Annual earth value testing (less than 1 ohm) needed during dry seasons
- Copper tape bonding rings cover maximum area and connect to equipment at the nearest point
- Earth wires should be straight and short to minimize impedance
- Earthing wires for interlocking subsystems are color-coded (green/yellow) for easy identification
- Earth wires should be solid copper, with a minimum cross-section of 4 sq. mm, and not coiled
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz focuses on the maintenance of electronic interlocking systems and lightning protection for signaling equipment. It covers maintenance schedules, inspections, and compliance with national standards. Quiz takers will evaluate their knowledge on maintaining and protecting critical electrical equipment.
