Podcast
Questions and Answers
As Per IRTEM, what is the recommended action to prevent electric shock during the jointing of copper cable screens and armour?
As Per IRTEM, what is the recommended action to prevent electric shock during the jointing of copper cable screens and armour?
- Using rubber gloves during the jointing process.
- Applying a thick layer of insulation around the joint.
- Jointing through suitable wires to achieve specified screening factor and earthing at stations. (correct)
- Ensuring the location box is painted with black and yellow stripes.
As Per IRTEM, when planning a cabling route, what initial determination should be made?
As Per IRTEM, when planning a cabling route, what initial determination should be made?
- The specific brand of cable to be used for the project.
- The depth at which the cables will be buried along the route.
- The number of conductors, sizes, and type of cable required based on the circuits desired. (correct)
- The color of the cable markers to be used.
As Per IRTEM, what percentage of spare conductors is generally recommended for cables carrying 5 or more pairs, to accommodate future expansions?
As Per IRTEM, what percentage of spare conductors is generally recommended for cables carrying 5 or more pairs, to accommodate future expansions?
- 25% or more (correct)
- 50% or more
- 10% or more
- 5% or less
As Per IRTEM, after deciding upon a cable route, what should be charted on a route plan?
As Per IRTEM, after deciding upon a cable route, what should be charted on a route plan?
As Per IRTEM, what is the standard practice for laying telecom cables relative to the Railway boundary?
As Per IRTEM, what is the standard practice for laying telecom cables relative to the Railway boundary?
As Per IRTEM, how far should telecom cables be separated from electrical power cables?
As Per IRTEM, how far should telecom cables be separated from electrical power cables?
As Per IRTEM, what is the nominal interval at which cable markers should be provided along the cable route on the Indian Railways?
As Per IRTEM, what is the nominal interval at which cable markers should be provided along the cable route on the Indian Railways?
As Per IRTEM, what is the minimum depth at which a cable should be buried below the surface of the ground?
As Per IRTEM, what is the minimum depth at which a cable should be buried below the surface of the ground?
As Per IRTEM, in exceptional cases where the cable trench depth is limited to 0.5 m near OHE masts, under what condition can the minimum distance between the cable and the OHE mast be brought down to 0.5m?
As Per IRTEM, in exceptional cases where the cable trench depth is limited to 0.5 m near OHE masts, under what condition can the minimum distance between the cable and the OHE mast be brought down to 0.5m?
As Per IRTEM, what is the recommended bending radius for cables with aluminium sheathed armour?
As Per IRTEM, what is the recommended bending radius for cables with aluminium sheathed armour?
Flashcards
Copper Cable Jointing
Copper Cable Jointing
Screen and armor of copper cables must be jointed with suitable wires for specified screening factor and earthing.
Earthing Copper Cables
Earthing Copper Cables
The copper cable screen and armor must be earthed with a low value earth (<1Ω) at stations.
Cable Planning
Cable Planning
Determine the number, size, and type (quad/PIJF) of cable based on the circuits desired.
Spare Cable Conductors
Spare Cable Conductors
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Cable Bending Radius
Cable Bending Radius
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Unwinding Cables
Unwinding Cables
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Cable Laying Methods
Cable Laying Methods
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Direct Laying Prep
Direct Laying Prep
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Cable Bedding
Cable Bedding
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Cable Trench Sharing
Cable Trench Sharing
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Study Notes
- EC Sockets should be fixed on the location box and the location box should be painted with black and yellow stripes.
- Copper cable screens and armour to be jointed must use suitable wires to achieve the specified screening factor when earthed at stations. It must be done first to avoid electric shock due to induction.
- Copper cable screen and armour must be earthed with a low value earth () at stations to achieve the specified screening factor.
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