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Airports Authority Of India Bhavnagar isolation transformer procurement 2026 Gujarat IS/IEC 60947 2026

Bid Publish Date

18-Feb-2026, 5:41 pm

Bid End Date

05-Mar-2026, 5:00 pm

Value

₹3,94,461

Location

BHAVNAGAR , GUJARAT

Progress

Issue18-Feb-2026, 5:41 pm
AwardPending
Explore all 4 tabs to view complete tender details

Quantity

5

Category

Isolation Transformer

Bid Type

Two Packet Bid

Key Highlights

  • • Explicit 25% quantity fluctuation clause with contract rate protection
  • • IS/IEC:60947 latest enclosure and transformer terminal box IP ratings required
  • • Need for Type test reports to prove conformity of isolation transformer specifications
  • • 7+ years residual market life requirement for offered transformers
  • • Routine and special test reports on demand; OEM conformity certificates
  • • Demurrage penalties at 0.5% daily, destruction after 1 month for unlifted items
  • • Delivery and installation address at Bhavnagar Nav-Aids Site, Airports Authority of India
  • • GST handling: bidder bears tax; Buyer reimburses as per actuals or quoted rate

Categories 6

POWER CONDITIONING ELECTRICAL SUBSTATION STATIC CONVERTERS AC AND DC POWER SUPPLY MICROWAVE SWITCH SUB STATION

Tender Overview

Airports Authority Of India invites bids for an isolation transformer to be installed at the Bhavnagar Nav-Aids Site, Bhavnagar, Gujarat (364001). Estimated value: ₹394,461. Scope covers transformer rated in KVA, single/double/three-phase configuration, HV/LV winding arrangement, voltage ratio, insulation class, and enclosure with IP rating per IS/IEC:60947. Delivery to: Airports Authority Of India, Nav-Aids Site, Bhavnagar Airport, Bhavnagar, Gujarat. Bid includes option to increase quantity up to 25%, with contract rates unchanged and delivery time recalculated. Special test and type test reports must be available on demand. Unique requirement: adherence to specified enclosure and terminal box protections and routine/special testing on demand.

Technical Specifications & Requirements

  • Category: Isolation transformer suitable for installed location; Rating to be specified in KVA; No. of phase to be specified
  • Winding connection: HV/LV configuration; Voltage ratio to be specified; Insulation class to be specified
  • One minute power frequency withstand voltage: to be specified in kV; Material of enclosure: as per tender; Enclosure IP Rating per IS/IEC:60947 latest
  • Enclosure protection transformer terminal box IP rating: per IS/IEC:60947 latest; Fittings per transformer: includes termination insulators, windings temp indicators with alarm/trip, cover lifting eyes, lifting lugs, core/winding lugs, earthing terminals, cable boxes, tap changing links; other requirements as applicable
  • Tests: routine test reports to be furnished; special test reports on demand; Certifications: availability of Type test reports proving conformity
  • Additional generic details repeat across categories (store description, rating, phase, winding, voltage ratio, insulation class, IP protection, fittings)

Terms, Conditions & Eligibility

  • Delivery address: Bhavnagar Airport Nav-Aids Site, Bhavnagar, Gujarat
  • Option clause: Purchaser may increase/decrease quantity by up to 25% during contract; extended delivery timelines follow a calculated method with minimum 30 days
  • Delivery & installation: Actual delivery and commissioning at the stated address; installation if covered in scope
  • Bidder financial standing: Not under liquidation or bankruptcy; must upload a supporting undertaking
  • Product life: Offered equipment must have at least 7 years residual market life and not be declared end-of-life by OEM
  • GST/taxes: Bidder to determine GST; reimbursement as per actuals or applicable rates, capped to quoted GST
  • Demurrage: 0.5% of total contract value per day for rejected items not lifted within 48 hours; after 1 month, items may be destroyed with no claim
  • ATC/ATC: Upload required certificates and documents as per terms; inability to submit may lead to rejection

Key Specifications

  • Isolation transformer with rated KVA (as specified) and appropriate phase configuration

  • Winding HV/LV connections as per design; exact voltage ratio to be specified

  • Insulation class meeting project requirement; withstand voltage per 1 minute power frequency rating

  • Enclosure and transformer terminal box IP ratings per IS/IEC:60947 latest

  • Required fittings: termination insulators, winding temperature indicators with alarm/trip, cover lifting eyes, lifting lugs, core winding lugs, earthing terminals, cable boxes, tap changing links

  • Availability of routine test reports and special test reports on demand; Type test reports proving conformity

Terms & Conditions

  • 25% quantity flexibility with unchanged rates and extended delivery calculations

  • Delivery/installation at Bhavnagar Nav-Aids Site; GST to be self-managed by bidder

  • Mandatory testing documentation: routine, special, and type test reports as required

Important Clauses

Payment Terms

Not specified in data; ensure compliance with ATC terms and standard procurement payment procedures

Delivery Schedule

Delivery period to commence after last date of original delivery order; extended time as per option clause with minimum 30 days

Penalties/Liquidated Damages

Demurrage charges at 0.5% of total contract value per day for unlifted items within 48 hours; destruction after one month if not lifted

Bidder Eligibility

  • No liquidation, court receivership, or bankruptcy proceedings

  • Not listed as obsolete by OEM within remaining market life

  • GST registration and financial solvency documentation

Documents 5

GeM-Bidding-8984325.pdf

Main Document

CATALOG-Specification-1

CATALOG Specification

CATALOG-Specification-2

CATALOG Specification

Buyer uploaded ATC document

ATC

GEM General Terms and Conditions Document

GEM_GENERAL_TERMS_AND_CONDITIONS

Past Similar Tenders (Historical Results)

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Posted: 28 July 2025
Closed: 8 August 2025
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Posted: 5 January 2026
Closed: 10 January 2026
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Technical Specifications 2 Items

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 Neutral Grounding
GENERIC Rating (in KVA) 10
GENERIC No. of phase (in Nos.) 1
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") 0, 1, 2, 3, 4, 5
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") 0, 1, 2, 3, 4, 5
FITTINGS FOR EACH TRANSFORMER Number of Transformer lifting lugs (hint: If not applicable select "0") 0, 1, 2, 3, 4, 5
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 Rating and diagram plate
TESTS Agreed to furnish additional routine test reports for Insulation resistance
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
CERTIFICATIONS Availability of Type test reports to prove conformity of the specification From Central Govt. Lab, NABL AccreditedLab

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Required Documents

1

GST registration certificate

2

Permanent Account Number (PAN) card

3

Experience certificates for similar isolation transformer supply

4

Financial statements and solvency undertaking

5

EMD/Security deposit documents (if applicable in ATC)

6

Technical bid documents and compliance certificates

7

OEM authorizations and Type test/type conformity certificates

8

Any additional documents specified in ATC/ATC corrigendum

Frequently Asked Questions

Key insights about GUJARAT tender market

How to bid for isolation transformer tender in Bhavnagar Gujarat 2026

Bidders must submit GST registration, PAN, experience certificates, financial statements, and EMD as applicable. Provide OEM authorizations and Type test reports proving conformity to IS/IEC 60947. Include routine and any demanded special test reports. Ensure compliance with the 25% option quantity clause and delivery to Bhavnagar Nav-Aids Site.

What documents are required for AAI Bhavnagar transformer procurement

Required documents include GST certificate, PAN, company financials, experience certificates for similar transformers, OEM authorization, Type/test conformity certificates, and routine/special test reports. Submit bid compliance, price bid, and any ATC-specific documents by the stated tender submission deadline.

What are the technical standards for the isolation transformer bid in Bhavnagar

Must comply with IS/IEC 60947 for enclosure IP rating and transformer terminal boxes; provide Type test reports proving conformity; insulation class and voltage ratio must meet project specifications; routine and special test reports must be available on demand.

What is the delivery address for the Bhavnagar isolation transformer supply

Delivery and installation, if covered, must occur at Airports Authority Of India, Nav-Aids Site, Bhavnagar Airport, Bhavnagar, Gujarat. Schedule follows the original order date, with potential 25% quantity-based extensions at contract rates.

What is the option clause for quantity changes in this tender

Purchaser may increase/decrease order quantity up to 25% at contract rates; extended delivery time is calculated as (increase/original quantity) × original delivery period, minimum 30 days, and may extend up to original delivery period.

What are the penalties for not lifting rejected items in Bhavnagar tender

Demurrage charges will apply at 0.5% of total contract value per day for 48 hours non-lift; if items remain after one month, they may be destroyed with no claim admissible by the buyer.