Government Tender for Overhauling OLTC Power Transformers at Savarkundla Substation

This government tender invites qualified electrical contractors to undertake the Overhauling of On-Load Tap Changers (OLTC) for various 66/11KV Power Transformers at multiple 66kV substations within the Savarkundla AM division, Gujarat. The project aims to enhance the reliability and efficiency of power transmission infrastructure managed by Gujarat Energy Transmission Corporation Limited (GETCO). The scope involves comprehensive maintenance, testing, and replacement of OLTC components to ensure optimal transformer performance. Bidders must meet strict eligibility criteria, including valid electrical licenses, experience, and financial stability. The project duration is approximately 6 months, with a total estimated cost of around ₹6,29,757. The tender process is open, with detailed documentation available for download. This opportunity is ideal for experienced electrical maintenance firms specializing in power transformer servicing and overhaul, seeking government contracts in the power and energy sector.

The scope of work includes:

• Overhauling of OLTC for 66/11KV Power Transformers at designated substations.
• Testing and inspection of existing OLTC components.
• Replacement of worn-out parts with approved spares.
• Calibration and tuning of OLTC mechanisms.
• Ensuring compliance with safety and quality standards.

The process involves:

1. Site assessment and preparation.
2. Removal of existing OLTC components.
3. Inspection and testing of parts.
4. Replacement with certified components.
5. Reinstallation and calibration.
6. Final testing and commissioning.

Key specifications:

Parameter	Details
Transformer Voltage	66/11KV
Overhaul Duration	Approx. 6 months
Certification	Valid Electrical Contract License
Experience	Minimum 3 years in transformer OLTC maintenance
Payment Terms	As per contract agreement

Bidders must submit detailed work plans, safety procedures, and compliance certificates as part of their proposal.

✓ Must possess valid electrical contractor license with latest validation.
✓ Minimum 3 years of experience in transformer OLTC maintenance.
✓ Proven track record with at least 2 similar projects completed successfully.
✓ Financial stability demonstrated through latest ITR, balance sheet, and profit-loss statements.
✓ Minimum bank solvency of 20% of the bid value.
✓ GST registration with active GST number.
✓ Valid MSME registration (if applicable).
✓ Submission of experience work orders and experience certificates.
✓ Submission of all required documents listed in the tender.

Qualification Criteria	Minimum Requirement
Experience	3 years in transformer maintenance
Financials	Latest 3 years ITR, balance sheet
Bank Solvency	20% of bid amount
License	Valid electrical license
Registration	GST, MSME (if applicable)
Other	Experience certificates, work orders

Bidders must meet all criteria to qualify for the bidding process.

The technical specifications include:

• Transformers rated at 66/11KV with OLTC mechanisms.
• OLTC components must conform to IS standards.
• Replacement parts should be of OEM quality.
• Calibration accuracy within ±0.5 degrees.
• Testing procedures include insulation resistance, contact resistance, and operational testing.

Sequence of procedures:

1. Disconnection and safety checks.
2. Removal of OLTC assembly.
3. Inspection and testing.
4. Replacement of defective parts.
5. Reinstallation and calibration.
6. Final testing and commissioning.

Technical parameters:

Parameter	Specification
Voltage Rating	66/11KV
OLTC Type	On-Load Tap Changer
Calibration Tolerance	±0.5 degrees
Standards	IEC, IS

All work must adhere to the specified technical standards and safety protocols.

The estimated project cost is approximately ₹6,29,757. The bid submission must include a detailed cost breakdown:

Item	Cost (INR)
Labour	40%
Materials	35%
Testing & Calibration	15%
Miscellaneous	10%

Payment terms: - 30% advance upon award. - 40% after successful installation and testing. - Remaining 30% after final acceptance.

Bidders must submit a comprehensive financial proposal aligned with the tender specifications, including all taxes and duties.

The bidding process involves the following steps:

1. Download tender documents from the official portal.
2. Submit the technical bid and EMD of ₹7,500 via online RTGS/NEFT.
3. Ensure all required documents are uploaded before the deadline.
4. The technical evaluation will be conducted on 20-06-2025 at 16:30.
5. Shortlisted bidders will be invited for commercial bid opening.
6. The commercial bid will be opened on 20-06-2025 at 17:00.
7. Final award will be based on combined technical and financial evaluation.

Important timelines:

Event	Date & Time
Bid Submission Start	30-05-2025 13:00
Bid Submission End	20-06-2025 16:00
Technical Evaluation	20-06-2025 16:30
Commercial Bid Opening	20-06-2025 17:00

Bidders must follow all instructions strictly and ensure timely submission to qualify.

The evaluation will be based on:

Criteria	Max Marks
Technical competence and experience	60
Financial proposal	30
Past performance and project quality	10

Minimum qualifying marks: - Technical score of at least 45 marks. - Financial bid within the prescribed budget.

Evaluation factors include:

• Experience in transformer OLTC maintenance.
• Quality of proposed methodology.
• Financial competitiveness.
• Compliance with tender conditions.

Date	Event	Details
30-05-2025	Tender Download Start	Bid documents available online
20-06-2025	Bid Submission End	Last date for bid submission at 16:00
20-06-2025	Technical Evaluation	Scheduled at 16:30
20-06-2025	Commercial Bid Opening	Scheduled at 17:00
20-06-2025	Bid Opening Closure	Final date for all submissions

All deadlines are strict; late submissions will be rejected.

For queries and assistance, contact:

• Superintending Engineer (Tr.), Tr. Circle Office, Amreli
• Email: setramreli@rediffmail.com
• Address: Near 66 KV sub-station, Keriya Road, Amreli, Gujarat
• Phone: +91-79-40007517, 40007514, 40007515
  Support and clarifications regarding the bidding process can be obtained during official working hours. Bidders are advised to contact well in advance of deadlines.

All bidders are encouraged to participate in the free vendor training sessions organized every Saturday at (n)code solutions, Ahmedabad, to familiarize themselves with the online bidding process. The tender documents include detailed technical, financial, and contractual terms. Ensure all required documents are correctly uploaded and adhere to specified formats. The project offers a significant opportunity for experienced electrical maintenance firms to contribute to Gujarat's power infrastructure development under a transparent government procurement process.