Ch 21 Relays and EI PDF

Chapter21 Relays EI The of panels button are different colors Running signal Red Shunt signal Yellow Calling on Red with white dot Enit button white Alternate overlap white with...

Chapter21 Relays EI The of panels button are different colors Running signal Red Shunt signal Yellow Calling on Red with white dot Enit button white Alternate overlap white with black dot Alternate Route point BlackGrey slot Green Crank Handle Blue Paint group Black with Red dot slot given by two Agencies Any but widthrawl by any agencies Point Indication white Yellow or green light near individual point During operation of points light strip light for the intended position shall flash till points are corred set and locked The point locked indication in route shall be given by illumination of small white light near the point or points button Route indication Route set and locked shall be given by a set white light not less than two on each track of section when route is not set route indicator lamps any Shall be extinguished Signal indications Stop signal is ON Red In Permissive signed is on Yellow  signal All Aspeed lable P Failure of green green Flashes Red Blank Failure of Fellow Green Flashes Red lit Failure of Double fellow Both Green and Red flash Failure of Red Green Blank Red flashing Shunt signal OFF slanting white light strip or two miniature slating whitelight Calling ON OFF white light on panel miniature yellow at site Track Circuit indication when track occupied Red light not less than two other indication Approach track cut Approch track controlling Caling on signal cut warning of Approey track Audio visual signal temp failure alarm CH indication when CH key in Locked Yellow steady when CH key realsed from Central panel but CH key is not extracted when are key is inserted but CH Control is not back taken back from Control panel Red Flashing When CH key released key entracted Redsteady CH when Emergency Cre key release control given from control panel with 120 seconds times in progress Yellow Flashing signal to indication white light Geate Central when gate is closed Locked Yellow steady When gate slot released from control panel to  open bell gate open when gale but gate slot is not taken back from Control Panel Yellow flashing when Gate is open Red steady The control panel indication lamps shall be operated by not more than Uv miniature type bedbs or light emitting diodes 120 when anApproved Electronic Flasher Relay other than Mercury type is provided A flashing white indication shall be provided at corner of the control panel Interlocking Circuit Regt Common Return shall not be provided in vital circuit where relays other than 240 1000 I relay with metal to carbonontaitsarcredhelirai.is shall be so designed that not more than 45 Such contacts are used in series of Circuit The interlocking bow conflecting routes shall be achieved through route electric Circuit interlacting at route initiation stage For calling on signals provision of trall cut inthe route anlap are not req Point in route isolation Req stop signal ahead is not blank isotneeded for clearing of shunt signal provision of berthing track liruit points 21 gates in aurley stop signed ahead is not blank is not needed A white indication for block Central on the Last stop signal should be provided on  p Ii section ahead is worked on Absolute Block System and control panel and block instrument are placed at different locations Iii Block working is by means of and counter or track Circuits Route Relase Circuits Sequential route release shall be provided Route is released only after the vent track Circuit is also dropped and picked up Incept inCase when the last track is a track berthing In case where the route is controlled by single track Circuit the route release shall be controlled after predetermined time delay The route relase cut shall be so designed that it will be release only when at least two track circuits drop 3 pick up in sequence Sectional saute release shall be provided if nos of routes are more than 100 When the route is released by the passage train the overlap points shall be released only after of the lapse of Suitable time after clearance delay of Last point track circuit of the route i e the trainis on berthing track Emergey Route Sub soute Cancellation Shall be done after physical verification of the line by traffic Representative Signal Control Circuits In case self Restoring typeof push buttons are used Signal shall not assume OFF aspect unless concerned push buttons are pressed simultaneously for 3 Seconds and released Fouling Protection Approch locking indication Locking Route tacking siding control key locking CH tooling Tracle Locking shall be incorporated in the relened Control circuits  esp ce of P so elays and Points indication Relays may be proved in signal cut before the signal displays an OFF aspect Locking of Advanced starter and starter signal at Junction signal Starter Released by Advanced Starter is not Required at may side station having single double line block where track circuiting have working been completed Starter released by Advanced starter is regt at all diverging ends of function stations station having twin single line block working and also at stations where track circuiting has not been provided b w starter and Advanced starter Level crossing Gates Clits Mid section Grate signals shall be provided with Dead Approch locking with time delay i Back Looking for Gate signals in Automatic signalling territory shall be provided Iii Back locking may also be provided if the distance gate of a signal to Le gate of780 cut is more than Mtr by two tracks Point Control Circuits Isolation points of Catch siding slip siding may operate automatically after the passage of train to the isolation position where sectional route release is provided Point Central cut shall be so designed that a cross connection or a short cut cannot operate a point or give a false indication of the same The Pt operation Central Ckt Shall have track Circuit Control overload protection Cress Protection Crank Handle and siding controlkey  O 1 king of by using MI key of different wards If the route remains locked due to what so ever reason it shall be possible to release the CH PointN key after a time delay of 120 seconds from the time the signals have been put back to ON Normal Entreme Emergency Button for failure of i.e Et key AM CH Interlocking Entracting Cocess Protection Features for internal cut not Regs for Ext Cut it is Reg Control Panel video Display unit VDU Physical SM be provided in separate box and key may key Contact are taken to pickup two separate in room for Redundary SM key relays relay purpose I Also taken two different EI input cards All Emergency operations shall be two step process protected against Unintrepted operation All un block option shall be provided while EI Starts up to un block all signals points lines after a time delay of at least 120 second Indication that E I System is healthy shall be displayed on the control panel using a blinking green LED or blinking green indicator can Control terminal Each normal or Revere operation of point shall be Controlled through two output Relays derived from two output bits should be from different output Cards E I of Last controlled position of points shall be available by using latch relay in point control circuits 70 Mid stroke point reversal preventing features shall be provided to prevent starting of operation when the point is under operation or tried for  post ng so Block working Built into EI shall be Provided for line clear Purpose TCF TUT TOL etc Timers Main stop signal Route cancellation Home Starter etc ERRB 120 sec Sub Route Emergery cancellation 120 sec EWUYL CH emergey key Relase time 120 see Shunt signal Route cancelation 120 sec ERR B Calling on signal Route cancellation 120 Sec ERR B of CO ON Signal overlap Release 720 sec OVYL it 60 see for big yard After Approval may be of PCSTE Calling on initiation 60 see Calling on starter 0 sec LC Grate gate signal at 780 mtr from 21 60 so opening of Geate gate signed at more than 180mtr opening of LC 120See opening of LC Grate Trapp gate 120 sec 10 opening of LC gate Automatic section 720 sec CH  t gale ay key other timer If Point Failure Alarm 75 sec Point operation timer 10 sec Signal Blank buzzer 10 see Panel Button struck up Alarm 10sec HR Relay de energisation 5 set Holding HR relay energized 3 HRConttltimere energization 5dec 5sec Power failure Alarm 5 sec Installation Testing of Relays Relays General Requirement Time element relays of Approved type shall be used where Approved electronic time element relays are used there shall be two in number and their Contact shall be in series in concerned time release clit All Relays encept Track Relay shall have 10 1 contact of one back working minimum one front Entra space for Repeater Relay 10 wiring of 01 type relays shall be done through fluible multi strand cuire 16 0.2 Relays involving internal Circuits shall have cross protection and double cutting Signal Control Relays Shall be provided with double cutting Number of contacts in a circuit shall not enceed 45 was due to voltage drop consideration  The voltage Acct R1 R2 of a Relay Shall not be less than 221 Sealing of Plug in Relays metal to Carbon done only at manufacturer premises Metal to metal not done below JE Signed Rank Replacement of Relays Track Relay 1240 As per SEM 10 Yr Asper Codallie Line Relay 25 to 30 Yr Installation of Relay Interlocking wiring used in various eg as per IRS specification 5 23 Grade of PVC insulated Unarmoured 1100N grade Type size of 1 Single core size 1mm 2 Multi core each coresize 1mm 3 Multi Core each core size 0.6mm 4 Flexible insulated wire size 1610.20mm If 5 Flexible Multi strand cuire size 3 0 75 mm Rack to Rack wiring Yo 6 mm for multi core Cable 160.2 mm multi strand  I es Following Practice shall be adopted for internal wiring 11 All connection to plug in non proved means Q suies relays themible wire ofK 50 16 0.20 mm Ii All connection to proved shall be done with type relay 0 6 1mm single strand multi core cable iii termination to tag blocks 1mm single strand in Circuit Breaker lever locks etc 1.5 1.6 sqmm Relay Racks shall have sufficent Capacity to take additional equipment to entent 15.1 Fuses Terminals and Terminal links Cartidge type fuse Non Deteriorating type Different colour codes for different satting General Regs AC provided for CPI RRT where Portle more then 100 Less than 100 Route He may be provided based on Condition for entremtemp with agreement PCSTE PCE of Automatic Fire Suppression System along with Automate fire Detection and Alarm system may be provided at stations with more anon lion routes  Electronic Interlocking EI ET shall be Route setting type using Drop down menu or Entry Enit Control with facility for individual operation of points A proper Record of checksums shall be maintained at station Division Headquarter and Lone Installation of EI Shall be followed by Approved guidline TAN Application logic site specific logic shall be wiped by officer Authorized by PLSTE The input and output cables of E I Shall be twisted to minimize EMI EMC effect when embedded block working in EI is used all indication like TGT TCF LC etc required for Block working shall also be displayed FRP or insulated ladders arrangement shall be used to wires from rack to rack or from other Carry equipment Electrostatic Floor pads and Hand bands shall be provided near electronic equipment to preventdamages to electronic equipment due to electrostaic discharges The room where EI is installed shall be provided with AC In case there is any other metallic earthed structure is available nearby which protects the EI building then separate class A at top of E I room is not  eque per val Building of 1 deal 16 Emammadisting.tn cleananddrtyining Indicative type surge protection deviceshall be used Testing of ElectronicInterlocking Tested at factory Factory Acceptance test FAT Tested at site and interface Connected then test wiring isTest SAT carried out Site Acceptance I it with the computer simulation is performed Software with reduce time testing i control table with he Cross table testing Iii square sheet testing I is performed at site with EI hardware and simulations panel it include is Logic interlocking testing ii Interface Equipment test Note FAT SAT should be done by septate official Power supply for EI wires connecting equipment shall be of adequate Size so that there is not more than 0.5 Loss in voltage The power supply for tan shall be fed with separate enteral supply Maintenance of Interlocking physical inspection once in a year System integrity test Five year earlier if or interlacting is altered All Electrical signalling cut Personal Responsibility of SSE JE fig up to 20 route 11 Aste DSTE more than 20 route Specific Tuts for EI Maintenance Terminal Electronic Interlocking System of shall be provided in the signal Technician Duty room encept Ansaldo IEC International Electro Technical Commission CENELEC European Committee for Electro Technical standarization Lighting Surge Protection for signaling Equipment SBT equipment shall be protected as per National Building Code 2016 IEC 62305 ClassB Type I device at the input of powersupplyEquipment class C Type II device at the outputof powersupply Eg classD type III device at the indoor and field Equipment Earthing for EI Should be less than 12 Earth wire Green or GreenYellow GNY E wire should not less than u sq mm Cross section