ELECTRIC BLOCK INSTRUMENT/ OBJECTIVES OF ELECTRICAL BLOCK INSTRUMENT (BWM-1.05)
1. The object of signaling trains by Electrical block Instruments is to provide, at all times a visual indication of the Block Sections to which they refers and to guard against two trains being admitted into a block section at the same time.
2. Each Instrument is connected to a similar instrument at the next block station and the two block instruments work together.
3. The pair of instruments is used for working of both UP and DN Trains over the block section so that each is used both for sending train to the next station or receiving train from the next station.
4. Each section controls the line by which trains approach it and the line by which trains leave it, is controlled from the station at the other and of the block section.
