Data

0.25 db/km- OFC loss at 1550 nm

0.40 db/km - OFC loss at 1310 nm

1 - in Month,point resting by JE/SSE

1 - in year, painting of EC sockets

1 percent- Jointing Allowance 

1.2 dB - Permitted transmission loss per  km for BPAC applications 

2 Months  - Stipulated time to take over new signalling installation by open Line. 

2 Crore - Loss Above it is serious Accident.

2.5 Percent- Contour Allowance. 

2.5 m - loop on each side for track crossing and Short bridges 

3 m - Loose cable at LC gates to meet future need.

3m - Signal cable Distance in Station Section Non RE

3 Lakh -Serious damage to Railway property 

3.15 m - thickness of MS Sheet used in Full location box.

3 Years - Painting of Signal posts

3 Years - Experience required by Graduate Engineer as per GCC.

4 m - Distance between two earth 

4 years - validity of competency certificate by zonal railway.

5 dB -Sound level in waiting room should be higher than this 

5 Mhz paired with 700 Mhz band - LTE Spectrum for Railway 

5 Lakhs - Detailed Estimate not required to prepare below this amount.

5 Cr - Above it,PVC ( Price variation Clause) applicable 

5 Years - Periodicity of Telecom tower painting 

5 Years and 5 Correction- SWR.

5 m - Distance of Signal cable in Block section non  RE area

5 m - Coiling on either side of Major steel bridges.

5.5 m - Distance of Signal cable in Block and stn section in RE area

6 No - LC gates can be connected to electronic LC gate telephone system.

5.75 m - Distance of telecom cable from OHE mast  in RE area within Station Limit.

6 m - Large Antenna of Master earth station of VSAT.

8 Years - LED

10 m - Coiled at each end on OFC in the jointing pit.

10m - Extra on each side of Bridge /culvert crossing

10 m - Extra on each side at every joint and cable huts.

10 m - Quad Cable to be left both sides on Steel girder bridge  while laying 

10 m - Distance of telecom cable in RE area outside Station Limit.

10 dB - Sound level at platform should be higher than this .

10 Second - Point contractor relay to de-energise and cut off power to point machine to protect it.

10 Second - Alarm to SM that if any signal goes blank by providing that all ECRs are de energised.

10 Second - Alarm to SM whenever any button is stuck up in button type panels.

10 Cr - Above it Two packet system mandatory.

10 years - Track relay,ELB

10.70 to 12.75 Ghz - Downlink frequency of VSAT 

12 kms -1.4 dia Quad is used.

13.75 to 14.5 Ghz - Uplink frequency of VSAT

15 Years - Life of Kavach 

15 digit - IMEI Number

15 percent- Space in Relay rack for future expansion

15 Kmph - Speed after Authority to proceed without line clear 

15 metre / min - Speed of OFC laying 

15 metre - RS 232 in IPIS

15 Second - Alarm to SM that point has failed to operate 

15 - Hop count in RIP

20 Lever - Max ADSTE can test 

20 Years - Life of EI,Axle Counter, IPS

20 percent- Spare conductors required in each main cable upto farthest point.

25 Years - Quad, OFC

25 Kms - Range of 25 W VHF set

30 - Nos of 5W VHF sets in ART

30 m - No change of Gradient within near point. 

32 bit- MPLS header  bit

40 times - Bends allowed in quad.

41/97 - RDSO Specification of PIJF

45 sec - Accident hooter blow after accident 

48 V DC - power supply for IP Exchange and CCEO

48 bit - MAC address

50 lakh- Direct Acceptance,  TC not required. 

50 ohms - Feeder cable 

56 kbps - Max data transfer rate in dial up connection 

60 m - Distance between derailing switch and LC gate.

64 kbps - Data speed of 2G technology 

64 mm - Max height of any signalling gear between track lines

70 - No of UTS locations per area.

90 kbps - Minimum bandwidth required for good VoIP call

100 m - Distance between Quad and ofc in same trench.

100 kmph - Max speed of ART

100 - Max hop count in IGRP

120 days - Under Force Majeure Clause ,Time limit for Work contract termination 

147.975 Mhz - ART frequency 

197 - RDSO SPN of Earthing

250 kmph - max Speed in Kavach

455 mm - Max height of low level platform  

470 ohms - Impedence of unloaded PIJF cable 

600 mm - Clearance of last row of relays from floor level on Relay rack.

686 m - CSL

715 m - CSR

1060 mm - Min distance of point machine/ EPD from nearest closing rail of track

1120 Ohms - Impedence of loaded PIJF cable 

1600 mm - Point machine from centre of Track. 

1905 mm - TLJB  from centre of Track

2360 mm - Location Box from centre of Track

More than 200 routes TASSA if CIU is included- RDSO will approve

Less than 200 routes it will be approved by PCSTE.

0.03 ohm - max resistance of point motor contact

IRS S 37 - DC motor specifications in point machine 

IRS S 24/2002 - IRS point machine specifications 

No of LED - 60 - Red

60 - yellow 

30 - Green