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GEM

Tender Notice for Isolation Transformer

Bid Publish Date

19-Jan-2026, 12:20 pm

Bid End Date

09-Feb-2026, 6:00 pm

Progress

Issue19-Jan-2026, 12:20 pm
AwardPending
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Quantity

16

Bid Type

Two Packet Bid

A tender has been published for Mahanadi Coalfields Limited Isolation Transformer (Q2). Quantity: 16 by. Submission Deadline: 09-02-2026 18: 00: 00. Check eligibility and apply.

Documents 9

GeM-Bidding-8812430.pdf

Main Document

CATALOG-Specification-1

CATALOG Specification

Other Documents

OTHER

Other Documents

OTHER

Other Documents

OTHER

Other Documents

OTHER

Other Documents

OTHER

Buyer uploaded ATC document

ATC

GEM General Terms and Conditions Document

GEM_GENERAL_TERMS_AND_CONDITIONS

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Technical Specifications 1 Item

Item #1 Details

View Catalog
Category Specification Requirement
CONSTRUCTION Isolation transformer suitable for installed at Inside the Lighting Distribution Board (LDB), at Welding DB panel itself, By the side of respective LDB, By the side of respective Welding DB, Inside Neutral Grounding Cubicle
GENERIC Description of store Isolation transformer for lighting, Dry type, Isolation transformer for Neutral Grounding
GENERIC Rating (in KVA) 100, 20, 10, 30, 50
GENERIC No. of phase (in Nos.) 3
GENERIC Winding connection HV/LV Delta/Star
GENERIC Voltage ratio 415/415V, +/- 5% taps (OCTC) in steps of 2.5%
GENERIC Insulation class F
GENERIC One minute power frequency withstand voltage (in KV) 2.5
GENERIC Material of enclosure CR sheet (2.0 mm thick)
GENERIC Enclosure protection (IP Rating), Ref. IS/IEC:60947 latest IP 42, Not applicable for Isolation transformer for Neutral Grounding
GENERIC Enclosure protection transformer terminal box (IP Rating), Ref. IS/IEC:60947 latest IP 52, Not applicable for Isolation transformer for Neutral Grounding
FITTINGS FOR EACH TRANSFORMER Number of Termination insulators (hint: If not applicable select "0") 2
FITTINGS FOR EACH TRANSFORMER Number of Winding temperature indicator (s) with alarm and trip contact (as applicable) (hint: If not applicable selet "0") 0, 1, 2, 3, 4, 5
FITTINGS FOR EACH TRANSFORMER Number of Cover lifting eyes (hint: If not applicable select "0") 2
FITTINGS FOR EACH TRANSFORMER Number of Transformer lifting lugs (hint: If not applicable select "0") 2
FITTINGS FOR EACH TRANSFORMER Number of Core and winding lifting lugs (hint: If not applicable select "0") 0, 1, 2, 3, 4, 5
FITTINGS FOR EACH TRANSFORMER Number of Earthing terminals (hint: If not applicable select "0") 0, 1, 2, 3, 4, 5
FITTINGS FOR EACH TRANSFORMER Number of Cable boxes (hint: If not applicable write "0") 0, 1, 2, 3, 4, 5
FITTINGS FOR EACH TRANSFORMER Number of Tap changing links Not applicable
FITTINGS FOR EACH TRANSFORMER Other requirements for each transformer Supporting structure, Foundation Bolts, Rating and diagram plate, Towing holes
TESTS Agreed to furnish additional routine test reports for Insulation resistance, Iron loss, Paint shade, thickness/adhesion, Enclosure sheet thickness, Not applicable
TESTS Agreed to furnish special test reports to buyer /consignee on demand Partial discharge measurement, Measurement of acoustic sound level, Short-circuit test, IP protection for Cable box and Enclosure, Not applicable

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Required Documents

1

Certificate (Requested in ATC)

2

OEM Authorization Certificate

3

OEM Annual Turnover

4

Additional Doc 1 (Requested in ATC)

5

Additional Doc 2 (Requested in ATC)

6

Additional Doc 3 (Requested in ATC)

7

Additional Doc 4 (Requested in ATC) *In case any bidder is seeking exemption from Experience / Turnover Criteria

8

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

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