Special Repair Works of replacement of Existing Transformer at JNV-1 in the District of Malkangiri and JNV Jajpur, Odisha.

ABSTRACT OF COST

Sl.No. Description Unit

Special Repair Works of Existing

Transformer at JNV Jajpur, Odisha

Special Repair Works of Existing

2 Transformer at JNV-1 in the District of ₹ ₹10,80,378.48

Digitally signed by JAYA

Special Repair Works of Existing Transformer at JNV Jajpur, Odisha

Bill of Quantities

Sl No. Description Unit Quantity Rate (Rs.) Amount (Rs.)

Supplying, installation, testing and commissioning of following capacity (continuous loading) BEE 4 Star rated

(Corresponding Level as per BIS amended upto date of receipt of tender) , 11/0.433 KV step down, 3 Phase, 50 Hz,

Dyn 11 vector group, ONAN (Oil Natural Air Natural) copper wound transformer (Electrolytic grade 99.9% pure

copper, Core made of first grade Cold Rolled Grain Oriented (CRGO) Core grade MOH or better, suitable for out

door/indoor applications with Offload Tap Changer/ On Load Tap Changer (OLTC) ( below 500 KVA offload and

above 500 KVA On Load Tap Changer) on HV side having AVR relay and Remote Tap Changer Control (RTCC) for

automatic sensing of incoming voltage, automatic 134DELHI SCHEDULE OF RATES (E&M)-2025operation of OLTC

and facility for remote and manual operation of OLTC HV side in range of +5% to -15% in steps of 2.5%, having

cable end boxes on HV side suitable for 3x300 sq.mm XLPE cable of 11 KV grade, including bus trunking

arrangement on LV side including supplying and laying of copper conductor multicore control cable from

transformer to HT breaker/panel for safety tripping, complete with all accessories and safety provisions as per

relevant IS Code including first filling of filtered dehydrated oil, i/c supplying and grouting of suitable M.S. Channel

with all accessories and transformer shall be confirming to IS : 2026 (Part 1 to Part 5), IS : 1180 and as per CPWD

specifications complete in all respects etc as required at site. The maximum flux density in any part of the core and

yoke at rated voltage and frequency shall be such that the flux density with + 12.5 percent combined voltage and

frequency variation from rated voltage and frequency does not exceed 1.9 Tesla. The permissible temperature-rise

shall not exceed 35 0C for oil and 40 dg. C up to 200 KVA and 40 0C for oil and 45 0C for above 200 KVA for

winding. Inside of tank shall be painted with varnish or liquid resistant paint. For external surfaces one coat of

thermo setting powder paint or one coat of epoxy primer followed by two coats of polyurethane base paint shall be

used. IS: 1180 (Part 3) shall be referred to for paint thickness for normal to medium corrosive atmosphere. For

highly polluted atmosphere and special application external paint work shall be as per direction of Engineer-in-

Charge. Design ambient condition : a) air temperature 50 0C, b) Relative Humidity 90 % Max, c) Seismic Zone as

1 NDSR per location of site, d) Altitude asper location/site. Noise level Shall not exceed limits asper NEMA TR-1 with all

accessories runningmeasured as per IEC 551 / NEMA standard. Thetransformer should have QR code which

shouldcontain drawing, test report OEM manual, Geo- Tag ofmanufacturing location etc. Marking Each

transformershall be provided with rating plate made of anodizedaluminium/ stainless steel material securely fixed

onthe outer body, easily accessible, as per IS: 1180Part-3. The entries on the rating plate shall beindelibly

marked.Fitting and Accessories : The following fittings shall be provided:- a) Two earthing terminals with the

earthing symbol b) Oil level gauge indicating oil level at minimum, 30°C and maximum operating temperature; c)

Air release device (for non-sealed type transformers) d) Rating and terminal marking plates; e) Silica gel breather f)

Drain-cum-sampling valve (¾″ nominal size thread, IS 554) preferably steel with plug for three phase

transformers; g) Thermometer pocket with cap; h) Oil filling holes having (1¼″ nominal size thread) with cover (for

sealed type transformers without conservator); i) Lifting lugs for the complete transformer as well as for core and

winding assembly; j) Pressure relief device or explosion vent above 200 kVA; k) One filter valve on the upper side

of the tank (for transformers above 200 kVA); l) Unidirectional flat rollers (for transformers above 200 kVA); m)

Inspection hole (for transformers above 200 kVA); n) HV side neutral grounding strip (where one of the HV bushing

terminal is connected to earth); o) Buchholz relay for transformers above 800 kVA. p) Arcing horns or suitable

rating lightning arrestors for HT side – 3 Nos. q) Bird guard; r) Oiltemperature indicator and winding temperature

indicators for transformers above 200 kVA with suitable tripping mechanism above permissible limit s) Jacking pads

(for transformer above 1 600 kVA); t) Additional Neutral separately brought out on bushing for earthing. u)

Magnetic oil level gauge (for transformer above 1600 kVA) with low oil level alarm contact; v) Non return valve (for

conducting pressure test); w) Pressure relief device or explosion vent x). Monogram Plate y) Inspection cover z).

Detachable type radiators with top and bottom shutoff valve. aa) Oil Conservator with Oil level indicator, minimum

level marking and drain plug for all transformers of capacity 50 KVA and above. bb) Necessary hardware, clamps,

lugs etc. for termination on HV/MV etc. for all transformers.

Removal of Existing Transformer , unwanted cables and related serviceable accessories from defined Location and

transporting to desired location of Storage to Client for their use as per direction of Engineer-In-Charge/Client

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade of following size direct in

ground including excavation, sand cushioning, protective covering and refilling the trench etc as required.

3.1 22.1.2 Above 120 sq. mm and upto 400 sq. mm Meter 50 694 34,700.00

Supplying and making outdoor cable end jointing with cast resin compound, including lugs and other jointing

materials, for following size of 3 core, XLPE aluminium conductor cable of 11 KV grade as required :

Supplying and making straight through cable jointing with heat shrinkable jointing kit complete with all accessories

including ferrules suitable for following size of 3 core, XLPE aluminium conductor cable of 11 KV grade as required :

Supplying and making outdoor cable end termination with heat shrinkable jointing kit complete with all accessories

including lugs suitable for following size of 3 core, XLPE aluminium conductor cable of 11 KV grade as required :

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size direct

in ground including excavation, sand cushioning, protective covering and refilling the trench etc as required.

7.1 10.1.3 Above 95 sq. mm and upto 185 sq. mm Meter 100 497 49,700.00

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC

insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

Supplying and making outdoor end termination with cast resin compound including aluminium lugs and other

9 11.2 jointing materials for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV

grade as required

Supplying and making straight through joint with heat shrinkable kit including ferrules and other jointing materials

for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry

11 5.4 enclosure with cover plate having locking arrangement and watering pipe of 2.7 Meter long etc. with charcoal/ coke Each 1 8351 8,351.00

and salt as required.

Earthing with copper earth plate 600 mm X 600 mm X 3 mm thick including accessories, and providing masonry

12 5.6 enclosure with cover plate having locking arrangement and watering pipe of 2.7 Meter long etc. with charcoal/ coke Each 1 13733 13,733.00

and salt as required.

Supplying and laying 25 mm X 5 mm copper strip at 0.50 metre below ground as strip earth electrode, including

13 5.8 connection/ terminating with nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and Meter 30 1024 30,720.00

with 2 sets of brass nut bolt & spring washer spaced at 50mm)

Providing and fixing 25 mm X 5 mm copper strip in 40 mm dia G.I. pipe from earth electrode including connection

with brass nut, bolt, spring, washer excavation and re-filling etc. as required.

15 5.14 Providing and fixing 25 mm X 5 mm copper strip on surface or in recess for connections etc. as required. Meter 10 1246 12,460.00

Supplying and laying 25 mm X 5 mm G.I strip at 0.50 metre below ground as strip earth electrode, including

16 5.9 connection/ terminating with G.I. nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping Meter 30 160 4,800.00

and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

Providing and fixing 25 mm X 5 mm G.I. strip in 40 mm dia G.I. pipe from earth electrode including connection with

G.I. nut, bolt, spring, washer excavation and re-filling etc. as required.

18 5.15 Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required. Meter 10 287 2,870.00

Termination of existing overhead lines with inew transformers as required, along with execution of all associated

and miscellaneous electrical works as directed by the Electrical Authority / Client / Engineer-in-Charge.”

Coordination with Local Electrical Authority for necessary clearance, inspection and charging of the new transformer

19 NDSR as per local electrical norms and procedures and obtaining clearance from State Electrical Authority including LS 1 100000 1,00,000.00

Processing Fees.

Digitally signed by JAYA

Execution of Special Repair Maintenance Work - SITC of 250 kVA Transformer at JNV Malkangiri, Odisha

Special Repair Works of Existing Transformer at JNV-1 in the District of Malkangiri

Bill of Quantity

S. DSR/ NS DSR-2023/ DSR-2023/

Description of items Unit Qty

No. Item No. DSR-2025 DSR-2025/

I Sub Head - I - Supply, Installation, Testing and Commisioning of Transformer

Supplying, installation, testing and commissioning of following capacity (continuous loading) BEE 5

Star rated (Corresponding Level as per BIS amended upto date of receipt of tender) , 11/0.433

KV step down, 3 Phase, 50 Hz, Dyn 11 vector group, ONAN (Oil Natural Air Natural) Copper wound

transformer (Electrolytic grade 99.9% pure copper, Core made of first grade Cold Rolled Grain

Oriented (CRGO) Core grade MOH or better, suitable for out door/indoor applications with Offload

Tap Changer/ On Load Tap Changer (OLTC) ( below 500 KVA offload and above 500 KVA On Load

Tap Changer) on HV side having AVR relay and Remote Tap Changer Control (RTCC) for automatic

sensing of incoming voltage, automatic operation of OLTC and facility for remote and manual

operation of OLTC HV side in range of +5% to -15% in steps of 2.5%, having cable end boxes

1 24.9 on HV side suitable for 3x300 sq.mm XLPE cable of 11 KV grade, including bus trunking

arrangement on LV side including supplying and laying of copper conductor multicore control cable

from transformer to HT breaker/panel for safety tripping, complete with all accessories and safety

provisions as per relevant IS Code including first filling of filtered dehydrated oil, i/c supplying

and grouting of suitable M.S. Channel with all accessories and transformer shall be confirming to

IS : 2026 (Part 1 to Part 5), IS : 1180 and as per CPWD specifications complete in all respects etc

as required at site. The maximum flux density in any part of the core and yoke at rated voltage

and frequency shall be such that the flux density with + 12.5 percent combined voltage and

frequency variation from rated voltage and frequency does not exceed 1.9 Tesla. The permissible

temperature-rise shall not exceed 35 0C

temperature-rise shall not exceed 35 0C for oil and 40 dg. C up to 200 KVA and 40 0C

for oil and 45 0C for above 200 KVA for winding. Inside of tank shall be painted with

varnish or liquid resistant paint. For external surfaces one coat of thermo setting

powder paint or one coat of epoxy primer followed by two coats of polyurethane base

paint shall be used. IS: 1180 (Part 3) shall be referred to for paint thickness for

normal to medium corrosive atmosphere. For highly polluted atmosphere and special

application external paint work shall be as per direction of Engineer-in-Charge. Design

ambient condition : a) air temperature 50 0C, b) Relative Humidity 90 % Max, c)

Seismic Zone as per location of site, d) Altitude as per location/site. Noise level Shall

not exceed limits as per NEMA TR-1 with all accessories running measured as per IEC

551 / NEMA standard. The transformer should have QR code which should contain

drawing, test report OEM manual,Geo- Tag of manufacturing location etc. Marking

Each transformer shall be provided with rating plate made of anodized aluminium/

stainless steel material securely fixed on the outer body, easily accessible, as per IS:

Part-3. The entries on the rating plate shall be indelibly marked.

Fitting and Accessories : The following fittings shall be provided:- a) Two earthing

terminals with the earthing symbol b) Oil level gauge indicating oil level at minimum,

30°C and maximum operating temperature; c) Air release device (for non-sealed type

transformers) d) Rating and terminal marking plates; e) Silica gel breather f) Drain-

cum-sampling valve (¾″ nominal size thread, IS 554) preferably steel

with plug for three phase transformers; g) Thermometer pocket with cap; h) Oil filling

holes having (1¼″ nominal size thread) with cover (for sealed type transformers

without conservator); i) Lifting lugs for the complete transformer as well as for core

and winding assembly; j) Pressure relief device or explosion vent above 200 kVA; k)

One filter valve on the upper side of the tank (for transformers above 200 kVA); l)

Unidirectional flat rollers (for transformers above 200 kVA); m) Inspection hole (for

transformers above 200 kVA); n) HV side neutral grounding strip (where one of the HV

bushing terminal is connected to earth); o) Buchholz relay for transformers above 800

kVA. p) Arcing horns or suitable rating lightning arrestors for HT side – 3 Nos. q) Bird

guard; r) Oil temperature indicator and winding temperature indicators for

transformers above 200 kVA with suitable tripping mechanism above permissible limit

s) Jacking pads (for transformer above 1 600 kVA); t) Additional Neutral separately

brought out on bushing for earthing. u) Magnetic oil level gauge (for transformer

above 1600 kVA) with low oil level alarm contact; v) Non return valve (for conducting

pressure test); w) Pressure relief device or explosion vent x).

Monogram Plate y) Inspection cover z). Detachable type radiators with top and bottom

shutoff valve. aa) Oil Conservator with Oil level indicator, minimum level marking and

drain plug for all transformers of capacity 50 KVA and above. bb) Necessary

hardware, clamps, lugs etc. for termination on HV/MV etc. for all transformers.

2 NSI-1 Providing & fixing GI chain link fencing with in mesh size 50x50mm SQM 30 3,666.30 1,09,989.00

3 NSI-2 Removal of Existing Old Transformer Job 1 35,000.00 35,000.00

Total Carried to Summary Sheet for SubHead I 7,67,276.00

II Subhead - II - Earthing

Earthing with G.I. earth pipe 4.5 metre long, 40 mm dia including accessories, and

4 5.2 providing masonry enclosure with cover plate having locking arrangement and Sets 2 7,658.00 15,316.00

watering pipe etc. with charcoal/ coke and salt as required.

Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories,

5 5.4 and providing masonary enclosure with cover plate having locking arrangement and Sets 2 8,351.00 16,702.00

watering watering pipe 2.7 metre long etc. with charcoal/ coke and salt as required.

Earthing with Cu. earth Plate 600mm x 600mm x 3mm thick including accesssories,

and providing masonary enclosure with cover plate (CI heavy duty) having locking

arrangement and watering pipe pipe of 2.7 mtr long etc. with charcoal or coke and

salt) as required.

Authorised Signatory

Bidder BoQ Page 3 of 5 Digitally signedNBCC

Execution of Special Repair Maintenance Work - SITC of 250 kVA Transformer at JNV Malkangiri, Odisha

S. DSR/ NS DSR-2023/ DSR-2023/

Description of items Unit Qty

No. Item No. DSR-2025 DSR-2025/

Supplying and laying 25 mm X 5 mm G.I. strip in 40 mm dia G.I. pipe from earth

7 5.11 electrode, including connection with G.I. nut, bolt, spring, washer excavation and Mtrs. 10 755.00 7,550.00

refilling etc. as required.

Providing and fixing 25 mm X 5 mm copper strip on surface or in recess for

8 5.14 connections etc. as required. 2 nos used for 50 x 5 for the Neutral earthing of Mtrs. 20 1,246.00 24,920.00

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections

etc. as required.

Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing etc.

Total Carried to Summary Sheet for SubHead II 1,01,076.00

III Subhead - III - Supplying & Laying of Cable

Supplying and laying of following size DWC HDPE pipe ISI marked along with all

accessories like socket, bend, couplers etc. conforming to IS 14930, Part II complete

11 15.16 with fitting and cutting, jointing etc.direct in ground (75 cm below ground level)

including excavation and refilling the trench but excluding sand cushioning and

protective covering etc., complete as required.

Supplying and laying of following size DWC HDPE pipe ISI marked along with all

12 15.15 accessories like socket, bend, couplers etc. conforming to IS 14930, Part II complete

with fitting and cutting, jointing etc. in the existing trench, complete as required.

Laying of one number PVC insulated & PVC sheathed/ XLPE Power cable of 1.1 KV

grade of following size in the existing RCC/HUME/METAL pipe as required.

13.4 10.5.4 Above 185 sq.mm and upto 400 sq.mm 0 170.00 -

Supply of following sizes of XLPE insulated Aluminum conductor strip/ wire Armoured,

14 11.1 overall PVC sheathed 1.1 KV grade cables conforming to relevant IS-7098 Code and

technical specifications.

14.1 NSI-3 6 sq. mm 4 core 0

Providing, laying and fixing following dia RCC pipe NP2 class (light duty) in ground

15 15.14 complete with RCC collars, jointing with cement mortar 1:2 (1 cement : 2 fine sand)

including trenching (75 cm deep) and refilling etc as required.

16 NSI-4 Supply of First Aid box as directed by Engineer Incharge No 3 4,370.72 13,112.16

Supply of tool kit with 1 pair 11 KV rubber hand gloves as directed by Engineer

Supplying & fixing standard shock treatment charts in English & Hindi duly framed and

covered with glass as directed by Engineer Incharge.

Authorised Signatory

Bidder BoQ Page 4 of 5 Digitally signedNBCC

Execution of Special Repair Maintenance Work - SITC of 250 kVA Transformer at JNV Malkangiri, Odisha

S. DSR/ NS DSR-2023/ DSR-2023/

Description of items Unit Qty

No. Item No. DSR-2025 DSR-2025/

Providing Safety mat made of elastomeric polymers Material (Class B) 1.2 M wide with

thickness 2.5 mm to withstand 12KV dielectric strength AS PER relevant IS Code

Providing a mat made of elastomeric polymers Material (Class A )1.2 M wide with 2

mm thickness to withstand 1.1 KV dielectric strength AS PER relevant IS Code

Total Carried to Summary Sheet for SubHead III 2,12,026.48

Authorised Signatory

Bidder BoQ Page 5 of 5 Digitally signedNBCC