GEM

Government Tender Published for Distribution Transformer, 3 Phase, 11 kV > 200 KVA up to and Including 2500 KVA in CHITTORGARH, RAJASTHAN

Posted

23 Oct 2025, 02:43 pm

Deadline

13 Nov 2025, 10:00 am

EMD

₹44,020

Location

CHITTORGARH , RAJASTHAN

Progress

Issue23 Oct 2025, 02:43 pm
AwardPending
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Quantity

1

Bid Type

Two Packet Bid

Categories 4

DISTRIBUTION TRANSFORMER ELECTRICAL SUBSTATION STATIC CONVERTERS TRANSFORMER SUPPLY

Nuclear Power Corporation Of India Limited announces a tender for Distribution Transformer, 3 Phase, 11 kV > 200 KVA up to and Including 2500 KVA (Q3) in CHITTORGARH, RAJASTHAN. Quantity: 1. Submission Deadline: 13-11-2025 10: 00: 00. Last date to apply is approaching fast!

Technical Specifications 1 Item

Item #1 Details

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Category Specification Requirement
STANDARDS Energy efficiency level 2
STANDARDS BEE Star Rating 2
STANDARDS Installation, Testing and Demonstration No
STANDARDS Minimum warranty on receipt of stores (in Months) 30, 42, 54, 66, 78
STANDARDS Minimum warranty from the date of installation (in Months) 24, 36, 48, 60, 72
RATINGS Nominal system voltage, HV ( in kV) 11
RATINGS Nominal system voltage, LV ( in V) 415
RATINGS Standard ratings (in kVA) 1000
RATINGS Minimum basic insulation level (in kVP) 75
RATINGS No load voltage ratios (in Volts) 11000/433-250
RATINGS Highest system voltage for equipment (in kV) 12
RATINGS Rated lightning impulse withstand voltage (in kV Peak) (Refer IS:1180 (Part 1):2014 Annex-D) 75
CONSTRUCTION Core mateial CRGO (as per IS:3024 latest)
CONSTRUCTION Conductor (Winding) material Copper
CONSTRUCTION Vector Group Dyn-11
CONSTRUCTION Type of Mounting Ground Mounted
CONSTRUCTION Noise level at rated voltage and freqeuncy, Maximum (in dB) 45, 48, 51, 55
TRANSFORMER TANK Transformer tank cover construction Non-sealed, Bolted
TRANSFORMER TANK Tank configuration with With radiator fins
TRANSFORMER TANK Material of transformer tank Mild Steel
TRANSFORMER TANK Minimum thickness of top and bottom material of transformer tank (in mm) 5, 6, 7, 8, 9, 10
TRANSFORMER TANK Minimum thickness of side material of transformer tank (in mm) 3.15, 4, 4.5, 5, 6
TRANSFORMER TANK Material of Bolts/Nuts/Wahers exposed to atmosphere Stainless steel (for upto 12 mm size), Electro Galvanized (for above 12 mm size)
TRANSFORMER TANK Gaskets wherever used shall conform to Type III (as per IS:11149) Type C (as per IS:4253 (Pt.2)
TRANSFORMER TANK Provision of conservator Yes , for Non sealed type with Plain tank construction
Painting Type of painting on inside of tank (hint: Refer Table 12 of IS:1180 (Pt.1):2014) Oil resistant paint
Painting Type of painting on External surface of tank (hint: Refer Table 12 of IS:1180 (Pt.1):2014) Polyurethane (finish coat)
TAP CHANGER Winding tapped HV
TAP CHANGER No. of positions (in Nos.) 7
TAP CHANGER Voltage variation +5% to -15% in steps of 2.5% for variation of HV
TERMINAL ARRANGEMENT Transformer fitted with bushings of appropriate voltage and curent ratings on HV side Yes. 3 Nos. (Conforming to IS:2099)
TERMINAL ARRANGEMENT Transformer fitted with bushings of appropriate voltage and curent ratings on LV side Yes. 4 Nos. (Conforming to IS:7421)
TERMINAL ARRANGEMENT Suitable provision for adoption of cables of suitable size on LV side Yes. For PVC/XLPE Cables
TERMINAL ARRANGEMENT Cable End Box on HV side Yes, No
TERMINAL ARRANGEMENT Cable End Box on LV side Yes
MARKING Material of rating plate Anodized aluminium
MARKING Marking method on rating plate Etching, Engraved, Stamped
MARKING Rating and terminal marking plates combined into one plate Yes
OPTIONAL FITTINGS Suitable rating lightning arrestors No
OPTIONAL FITTINGS Bird guard No
OPTIONAL FITTINGS Terminal connectors Yes, No
OPTIONAL FITTINGS Oil temperature indicator and widning temperature indicator Yes, No
OPTIONAL FITTINGS Jacking pads Yes for transformer above 1600 KVA, No, Yes
OPTIONAL FITTINGS Buchholz relay Yes, NoMagnetic oil level gauge with low oil level alarm contact
OPTIONAL FITTINGS Magnetic oil level gauge with low oil level alarm contact Yes for transformer above 1600, No, Yes
OPTIONAL FITTINGS Non return valve Yes, No
OPTIONAL FITTINGS Protection relay for sealed type transformers for internal parameters that is pressure, temperature, oil level and gas detection No
OPTIONAL FITTINGS Unidirectional flat rollers Yes, No
OPTIONAL FITTINGS Drain cum sampling valve Yes with steel plug (for transformers upto 500 KVA), No, Yes
OPTIONAL FITTINGS Self protection / disconnection devices No
OPTIONAL FITTINGS Expulsion fuse as disconnection device No
SERVICE CONDITION Maximum altitude <5000 m
TEST REPORTS & CERTIFICATIONS Availability of type test reports to prove the confirmity of the specification from Central Govt. Lab (Govt. Of India), NABL Accrediated, ILAC accrediated
TEST REPORTS & CERTIFICATIONS Agreed for stage Inspection as required by buyer Yes
SPECIAL TEST REPORTS Availability of test report for Determination of sound level test Yes, No
SPECIAL TEST REPORTS Availability of test report for short circuit withstand test Yes, No
SPECIAL TEST REPORTS Availability of test report for No load current at 112.5 % Voltage Yes, No
SPECIAL TEST REPORTS Availability of test report for Paint adhesion test Yes for 1 No., No, Yes for all units
SPECIAL TEST REPORTS BDV and moisture content of oil in the transformer Yes for 1 No., No, Yes for all units
SPECIAL TEST REPORTS Other requirements Losses and Impedance values as per Cl.7.8 and Table 6 of IS:1180 (Part 1):2014 latest, Limits of temeprature-rise as per Cl.7.10 of IS:1180 (Part 1):2014 latest

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Required Documents

1

Additional Doc 1 (Requested in ATC)

2

Additional Doc 2 (Requested in ATC)

3

Compliance of BoQ specification and supporting document *In case any bidder is seeking exemption from Experience / Turnover Criteria

4

the supporting documents to prove his eligibility for exemption must be uploaded for evaluation by the buyer