Page 426 - IRSEM_Main Book

Note: This chapter has under mentioned Maintenance Schedule in Appendix-I

S.No. Annexure No. Description
1 18-MS1 Maintenance Schedule of Block Instruments (Single Line, Double
Line, Push Button)

2 18-MS2 Maintenance Schedule of Block Instrument – Double Line (Lock
& Block)
3 18-MS3 Maintenance Schedule of Tokenless Block Instrument - Single
Line (Push Button type)

4 18-MS4 Maintenance Schedule of Analog Block Axle Counter Systems
(BPAC): CEL MAKE
5 18-MS5 Maintenance Schedule of Tokenless Block Instrument-Single
Line (Handle Type)

6 18-MS6 Maintenance Schedule of Universal Fail-Safe Block Interface
(UFSBI)

Note: This chapter has under mentioned Drawings in Appendix-II
S.No. Drawing No. Description

1 18-D1 IB Hut Layout Plan (Double line/Single line)

2 18-D2 IB Signalling with MSDAC & OFC (Double line)
3 18-D3 IB Signalling with MSDAC & OFC (Single line)

4 18-D4 Filter Unit for Block Circuits

5 18-D5 Protective devices for AC Electrified Area of Neale’s ‘A’ Type
Token Instrument-Earth Return
6 18-D6 Protective devices for AC Electrified Area of Neale’s ‘A’ Type
Token Instrument-Metallic Return

7 18-D7 Double line Block working with Protective Device for AC
Electrified Area.

Chapter 18: Block Instruments, BPAC & IBS Working Page 374 of 535