Provision of Inverter to avoid signal blanking at interlocked LC Gates (OSL) over Sealdah division.

18% HAS BEEN SHOWN IN ITEM BREAKUP SEPARATELY.

NON-SCHEDULE/SOR ITEM vide SL. NO. 1 to 32 GIVEN IN SCHEDULE OF WORK. GST @ 18% HAS

BEEN SHOWN IN ITEM BREAKUP SEPARATELY.

S No. Item Description of Item Unit Qty Rate Amount

1 1 "Supply of pure sine wave 500 VA Online Numbers 175.00 35927.12 6287246.00

Inverter input voltage: 24V DC, output

voltage: 110V AC as per RDSO Spec No. IRS:

S-82/92 (AMD.2) or latest. Note- (i)

Installation should be done through OEM's

representative. (ii) Supply of inverter should

be of PWM (Pulse width modulated) type, in

which the 'No load' input current is within 5%

of 'Full load' input current. Warranty: This

includes Five years warranty from the date of

receive in the store. Inspection: RITES."

SEALDAH DIVISION-S AND T/EASTERN RLY

2 2 "INSTALLATION, COMMISSIONING OF Numbers 175.00 4050.00 708750.00

I N V E R T E R WHICH CONSISTS OF

BATTERY,PROGRAMME SWITCH, INCLUDING

MOUNTING ON WOODEN PLANK AND

COMPLETE WIRING WITH 10 SQ MM AND 7/22

(AS PER SITE REQUIREMENT) SWG PVC

WIRES. THIS INCLUDES SUPPLY OF ALL NUTS,

BOLTS, SPRING WASHERS, PROGRAMME

SWITCH, WIRES ETC. WITH GOOD QUALITY

LUGS WITH SUITABLE CAPACITY AS PER SITE

REQUIREMENT. ALL WIRING TO BE DONE

THROUGH PVC CHANHNEL/ DUCT/PIPE OF

SUITABLE SIZE. PVC CHANHNEL/ DUCT/PIPE

TO BE SUPPLIED BY THE CONTRACTOR.

POWER WIRES SHOULD BE AS PER SPEC. NO.

IRS-S-76/89, Amd-2 OR LATEST. Inspection:

3 3 "Supply of full size apparatus case (Large) Numbers 80.00 11793.22 943457.60

(as per DRAWING NO. SW SK NO. 4/90 &

other applicable GKP SW Drawing). This

includes supply of location box (GKP type)

with 'E' type lock & key, fitted on location

door on both side, E Type lock (ward No. will

be specified by Engineer-in Charge) as per

RDSO Drg. No. SA 3376 and Key to Drg. No.

3377 as per RDSO drawing No. RDSO/S-

11500. Inspection : RITES "

4 4 "Supply of hard wood shelves thickness 25 Numbers 80.00 477.12 38169.60

mm for keeping equipment's and batteries in

the location box (FULL or HALF GKP /other

type) with suitable varnish and anti-termite

chemicals fitted on angles with nuts & bolts.

950 x 400 x 25 MM for full size location box .

Inspection: - Consignee "

5 5 "Casting, concreting and curing of concrete Numbers 80.00 2993.22 239457.60

foundation ((in ratio 1:3:6), erection and

installation of Full size Apparatus Case (GKP

type)/Stainless Steel (SS) Apparatus Case as

per DRG.NO. S&T/C-6/98(NKG) with 'E' type

lock on CC foundation. This includes cost of

all materials required for fixing holding down

bolts, casting, concreting. Note: - bolts, nuts

and washers, bitumen compound to be

supplied by contractor and bitumen

compound to be used in between apparatus

case and foundation as per site engineer.

This also includes bottom of apparatus cases

filled with sand and the outside covered with

masonry work and neat cement plastering.

Note: - i) Location boxes to painted with anti-

corrosive paints as per IS:- 9862-1981, one

and half feet from the bottom, on all

surfaces-both inside and outside. ii) Location

box will be supplied by Rly."

SEALDAH DIVISION-S AND T/EASTERN RLY

6 6 "Fixing by slotted angle, wiring of terminal Numbers 80.00 4093.22 327457.60

strips, hylam strip, relays, fuses with base,

fixing of hard wood shelves for Full size

Apparatus Case with termination & Earthing

of cables and wiring with lettering as

required including supply of slotted angles,

wires, ferrules for marking and miscellaneous

materials per location to be supplied by

contractor. (all materials except relay,

terminal strips, Bakelite strip, fuses with base

and hard wood shelves to be supplied by the

contractor). Wires to be used for this purpose

should be procured from RDSO'S approved

firm and to be inspected by RDSO. [Quantity

of wires to be specified by contractor]. NB-

power cable to be terminated with proper

lugs and required buss bar and other

terminals to be supplied by the contractor.

Inspection : Consignee"

7 7 "Supply of paper base hylam sheet 12 mm Sqm 5.00 4550.85 22754.25

thick. Inspection: consignee."

8 8 "Supply of PBT ARA terminal, 6 WAY, DRG. Numbers 100.00 411.02 41102.00

No. 23756, ALT-3. as per IRS Spec. No. IRS: S-

75-2006(REV-2) or Latest. Material to be

procured from RDSO's approved firm only.

Inspection: RDSO. "

9 9 "Supply of fuse block (PBT) to spec.no.IRS-S- Numbers 10.00 150.85 1508.50

75/2006(REV-2) OR LATEST,DRG.NO.SA-

23748 with fuse inserts cartridge, non-

deteriorating type to spec.IRS-S-78/92 with

latest amendment, to be mounted inside the

location box on hylum sheet. Fuse Base

Inspection: -RDSO."

10 10 "Supply of fuse block (PBT) to spec.no.IRS-S- Numbers 100.00 51.69 5169.00

75/2006(REV-2) OR LATEST,DRG.NO.SA-

23748 with fuse inserts cartridge, non-

deteriorating type to spec.IRS-S-78/92 with

latest amendment, to be mounted inside the

location box on hylum sheet. Fuse, non-

deteriorating(2A/6A/10A/16A) type,

cylindrical(IRS-S-78/92) Inspection: -RDSO."

11 11 "Supply of Earth electrode mild steel Numbers 80.00 1267.80 101424.00

galvanized, light class, IS:1239(PART-I)-

1979.earth electrode pipe should be with 3

mm thick, 50 mm dia and

perforated(staggered),5 mm dia holes, 2 nos

per 305 mm length. Earth pipe should

include CI threaded cap. Materials to be

procured and designed as per PCSTE/ER's

Drg No. SI/TYP/ 0097 dated 25.03.25 or latest

Inspection: Consignee"

12 12 "Supply of MS FLAT (SPEC. NO. 226 STD or Numbers 80.00 772.03 61762.40

latest) of size 35 mm x 6 mm. To supplied in

length of minimum 5 mtr or more as per

PCSTE/ER's Drg No. SI/TYP/ 0097 dated

25.03.25 or latest Inspection: Consignee."

SEALDAH DIVISION-S AND T/EASTERN RLY

13 13 Fixing of earth electrode including laying and Numbers 80.00 983.90 78712.00

installation of MS flat of size 35 mm x 6 mm

with length 5 mtr or as per extant practice of

Eastern Railway. As per PCSTE/ER'S DRG. NO.

SI/TYP/0097 dated 25.03.2025 or latest. for

apparatus cases, signal post & other

equipment as per instruction of site

engineer. Provision for fixing MS flat at

apparatus cases/ signal post/other

equipment should be made by the firm at

site. Where required necessary holes to be

drilled on the MS Flat . Full threaded bolts of

10 mm dia and length 40 mm should be

welded in the apparatus cases in such way

that the MS flat at apparatus case end can

be fixed from outside or from inside (bolts of

10 mm dia and length 40 mm should be

supplied by the contructor). Welding

arrangement with accessories and welding

materials should be arranged by the

contractor for fixing of bolts at equipment

end where required as per instruction of site

engineer. All hardware and other

miscellaneous materials required for

installation to be supplied by the contractor

except earth electrodes and MS flat. Sig.

Cable as provided by Railway is also to be

laid and terminated on Earth Electrode and

to GI Wire/GI Flat in Location Box.

14 14 "Supply of cement concrete enclosure for Numbers 80.00 483.90 38712.00

earth electrodes as per Drg No. S&T/C-

36(NKG) & PCSTE/ER's Drg No. SI/TYP/ 0097

dated 25.03.25 or latest. Inspection:

15 15 "Supply of battery charger input 110 V AC 50 Numbers 10.00 17321.19 173211.90

HZ single phase output 24VDC, output

current 15 Amps as per specification no. IRS-

86 2000 WITH AMD.4 (for signalling purpose).

Note: - charger to be supplied with one

active potential free contact to monitor

status of charger. Inspection : RDSO."

16 16 "Charging of lead acid cell (Secondary cell) of Numbers 120.00 311.02 37322.40

2V 80AH capacities as per

Manufacturer's/Railway engineer's

instruction. Acid and distilled water to be

supplied by the contractor. Specific gravity

acid should be approved type duly inspected

by consignee. This includes installation and

commissioning of battery in circuit. Battery

to be kept on wooden rack. Inspection:

17 17 "Charging of lead acid cell (Secondary cell) of Numbers 120.00 333.05 39966.00

2V 120AH capacities as per

Manufacturer's/Railway engineer's

instruction. Acid and distilled water to be

supplied by the contractor. Specific gravity

acid should be approved type duly inspected

by consignee. This includes installation and

commissioning of battery in circuit. Battery

to be kept on wooden rack. Inspection:

SEALDAH DIVISION-S AND T/EASTERN RLY

18 18 "Laying of S&T Cables of various cores/ pairs/ RMT 4922.00 4.24 20869.28

quads in trenches/ GI pipes/ RCC pipes/ DWC

pipes/ Trunking. This also includes laying of

cables in track crossings & road crossings.

Item includes provision of labels of coloured

plastic adhesive tapes or any other

identifiable material on each cable to give

the cable number at each Gantry

Post/hectometre post. (Cables will be

meggered before and after its laying by

contractor under supervision of Railway

Representative and he will submit the

meggering report of each testing). Length of

the cable laid includes the length of the cable

coiled for termination purposes. "

19 19 "Excavation of cable trench as per cable cum 4000.00 207.63 830520.00

route plan, 1.2 Mtr. deep and of 0.3 Mtr. to

0.6 Mtr. wide at bottom without brick as per

DRG. NO. S&T/C-40(NKG), SK/4/95/NKG,

SK/8/95/NKG. or latest alongside the track in

all kinds of soil, conforming to distances as

per cable route plan and refilling. This work

includes clearing of route from bushes etc.

The work shall be done as per the extant

practice on Eastern Railway and instructions

of Railway Engineer at site. Note:-(a) for all

trenches from distant signal to home signal

and to relay room, the minimum headway

above the uppermost cable in the trench

should be 600mm. If due to a large no. Of

cables headway is not available, 4"" of 1:2:4

concreting should be done. Note:-(b-1)

payment will be made as per actual work

done on pro-rata basis, if required depth is

not available at site. (b-2) if the depth of

trench is not uniform in a span of 100 mtr. or

shorter lengths if site condition demands

along the cable run, minimum depth will be

taken for that particular stretch for payment

(c ) All kinds of soils means including ballast

mixed soil of Railway Track."

20 20 Digging of trench 1.2 Mtrs. deep from rail cum 200.00 235.59 47118.00

flange/ road level and 0.3 Mtrs to 0.6 Mtrs

wide and back filling after placing of DWC/

RCC/GI pipe. (Placing of DWC/RCC/GI pipe

covered separately). The ballast disturbed be

screened and dressed as required by

Engineer-in-charge or his representatives

and road tarred immediately. For Track

c r o s s i n g , RDSO sketch No. SDO/CABLE

LAYING/009 or latest and for Road Crossing,

RDSO sketch No. SDO/CABLE LAYING/010 or

latest are to be followed.

21 21 "Repair of pucca roads to original state in Metre 100.00 216.95 21695.00

level crossing area after cable laying. Note :

All the materials required for this woprk to be

supplied by the Contractor except GI/ DWC

pipe, which is to be supplied by the Railway."

SEALDAH DIVISION-S AND T/EASTERN RLY

22 22 "Supply of Double Wall Corrugated (DWC)- Metre 150.00 336.44 50466.00

HDPE pipe/duct of size 200 mm outer dia, &

175 mm inner dia. It includes supply of

Double Wall Corrugated -HDPE pipe/duct as

per RDSO Specn.No. RDSO/SPN/ 204/2011

(version 1.1) or latest and conforming to ISI

Spec. No.IS:14930, Part-II. (The

manufacturers, suppliers must produce valid

IS license and should be certified under ISO

9000 and shall submit copy of certificate).

One of the following coupling arrangements

should also be supplied with each pipe as per

the site requirement.1) Suitable snap fit

coupler with rubber O-Ring 2) Spacers3)

Tees4) Bend,5) End-cap DWC pipe shall be

marked at every 1 mtr length in such a way

that manufacturer's name, vendor name and

year of manufacture can be easily identified.

Inspection: Consignee"

23 23 "Supply of Medium class GI pipes 100 mm Metre 100.00 645.76 64576.00

dia (4.5 mm thickness) as per IS 1239 (Part

1): 2004 for use in ASM room and at any

other location as decided by Site Engineer. It

includes supply of all material required for

fixing arrangement. At the ends of GI pipe,

flexible/ corrugated HDPE pipe will be

provided by contractor to protect cables from

sharp edges and sudden bends. Inspection:

24 24 Placing of DWC/HDPE/RCC/GI pipes along Metre 250.00 26.27 6567.50

with collars in trenches at places near track

and road, crossings, platform cuttings etc.

25 25 "Cement concrete work for miscellaneous cum 50.00 3047.46 152373.00

items in the ratio 1: 3: 6. Item includes

excavation, ramming, curing and plastering

with cement & sand mixture (aggregate not

exceeding 3.8 cm.) (Aggregate cement &

sand to be supplied by the contractor).

Wherever depth of 0.5 m cable trench is not

feasible, cable shall be protected as :-

Preparation of cement mixture 1:3:6 with

contractor's own materials and spreading

cement concrete mixture layer of 100 mm

thick over the already laid cables in the

excavated trench. Note : Cable to be covered

with RCC Slab of 1000mmX300-

600mmX100mm, where the depth of trench

26 26 "Supply of Digital Multimeter of Rishabh Numbers 4.00 19689.00 78756.00

6016 Advanced Multimeter or Similar/

superior, True RMS as per Technical Spec. -

TS-1. Inspection : Consignee . The

Functionality test of the Multimeter has to be

checked by consignee."

27 27 "Supply of Hand Held True RMS smart Numbers 2.00 25307.00 50614.00

leakage Clamp Meter of Rishav ALCT-60A or

Similar/ sipirior as per Technical Spec. -TS-2.

Inspection : Consignee. The Functionality test

of the Multimeter has to be checked by

28 28 "Supply of Handheld Digital Earth Clamp Numbers 2.00 80474.58 160949.16

Tester for clamp on earth/ground resistance

measurement up to 1000 ohms. Accuracy

current leakage up to 20A. No spines

required for measurement Model - DECT-2 or

equivalent / higher version make

Motwane/Stanlay/Fluke/Megger.Item to be

supplied after successful demonstration and

Approval of Railway. Inspection: Consignee"

SEALDAH DIVISION-S AND T/EASTERN RLY

29 29 Alteration/modification in the existing Numbers 51.00 2357.63 120239.13

location boxes (full size), fixing of

equipment's, cable insertion, termination,

wiring, testing & commissioning, two coat

painting, lettering to suit the circuits as per

approved wiring diagrams. This includes

filling with sand and plastering the same.

interconnecting earth electrodes. Inspection:

connecting Main earth pit to other earth pit

in case of loop earth. Note: i) 'No' in the unit

column indicates 'per pair of earth pit' ii) All

the locations where inverter will be installed,

should be checked for proper Equipotential

Earthing and compliance should be done."

32 32 "Termination of Outdoor Cables (Main Cables Per 2530.00 7.63 19303.90

/tail cables) at both ends in location boxes, Conductor

cable termination rack in relay room, station

building, generator room etc. The item

includes dressing of cables and wires with

dressing threads as per standard practice. All

material required for this item will be

supplied by contractor. The outdoor cable

shall be terminated in Relay Room, DG

Room, ASM Room etc under supervision and

instructions issued by Engr. incharge of the

work. Inspection: Consignee "