01
WINDINGS & ACTIVE PARTS
HV and LV rewinding, conductor replacement and winding restoration for disc, helical and layer constructions, matched to the original design or an engineered improvement.
TRANSFORMER REPAIR · REWINDING · REBUILD
Transformer Repair & Rewinding Services
From power and distribution transformers to furnace, solar and special-purpose units, INDULF delivers comprehensive repair, rewinding and rebuilding services backed by technical assessment, component expertise and electrical testing across India.
Rating
UP TO 10 MVA
Service
On-site & Workshop
Coverage
Pan-India
Failure diagnosis
Winding rewind
HV test reports
On-site & workshop
Pan-India
Warranty on repair
Overview
Expertise that keeps transformers in service.
INDULF provides comprehensive transformer repair, rewinding and rebuilding services across power, distribution, furnace, solar, special-purpose and other transformer types. From winding failures and insulation issues to damaged bushings, tap changers, cooling systems and other critical components, our repair capability is built around understanding the condition of the transformer and determining the right scope of work.
Every repair begins with technical assessment and diagnosis. The transformer is evaluated to identify the failure, its underlying cause and the condition of critical components before the repair scope is defined. Depending on the requirement, our services include rewinding, core and clamping work, bushing and OLTC replacement or repair, oil processing, cooling-system repairs, component replacement and complete transformer rebuilding.
Following repair, the transformer undergoes the required electrical and diagnostic testing to verify its condition and performance before return to service. With experienced technical teams, structured repair practices and Pan-India service capability, INDULF supports customers with dependable transformer repair when replacement is not the only or most practical solution.
Repair capability
A complete repair scope for critical transformers.
From winding and active-part restoration to mechanical repairs, insulation treatment and final testing, INDULF provides a complete repair scope for transformers across a wide range of applications.
02
CORE & CLAMPING
Core inspection, lamination assessment, restacking, joint correction and clamping restoration to recover mechanical and electrical integrity.
03
BUSHINGS & TAP CHANGERS
Bushing replacement, OLTC and off-circuit tap-changer servicing, contact replacement and mechanism inspection to restore reliable operation.
04
OIL & INSULATION
Oil filtration, dehydration, degassing or replacement, supported by insulation inspection, drying and restoration where required.
05
TANK, COOLING & MECHANICAL
Tank and cover repairs, radiators, conservators, gaskets, cooling fans, pumps and other mechanical systems restored as required.
06
TESTING & VALIDATION
Pre- and post-repair electrical and diagnostic testing, including insulation resistance, winding resistance, turns ratio, tan delta and other applicable tests, with documented results.
Technical capability
Capability that extends across transformer types
Power range
01UP TO 10 MVA
Distribution to substation
Voltage class
02up to 132 kV class
11 / 33 / 66 / 110 / 132 kV
Transformer types
03Power & Distribution
Auto · Furnace · Special-purpose
Oil and dry-type
Repair scope
04Repair · Rewind · Rebuild
Winding · Core · OLTC · Oil · Components
Full or targeted overhaul
Service delivery
05Pan-India Coverage
Repair support across India
Why INDULF for transformers
The expertise behind every successful repair.
From diagnosis and repair to testing, warranty and nationwide support, INDULF brings the technical expertise and accountability required to return critical transformers to reliable service.
- 01
ENGINEERING-LED DIAGNOSIS
Every repair begins with assessing the transformer, understanding the failure and identifying the underlying cause before the repair scope is defined.
- 02
COMPLETE REPAIR CAPABILITY
From rewinding and core work to bushings, tap changers, oil treatment, cooling systems and mechanical repairs, our capabilities cover both targeted repairs and complete rebuilding.
- 03
TESTED & WARRANTED
Every completed repair undergoes the required electrical and diagnostic testing, with documented results and warranty coverage for the agreed repair scope.
- 04
PAN-INDIA SUPPORT
From on-site assessment and workshop repair to transportation and return to service, INDULF provides coordinated support across India through one accountable team.
Find the right solution
Repair, replace or rent. Choose what makes sense.
The right solution depends on the transformer’s condition, urgency, technical requirements and long-term needs. INDULF helps you evaluate whether repair, a refurbished transformer or temporary rental provides the most practical path back to reliable power.
When repair makes sense
Repair Your Existing Transformer
When the transformer remains technically viable, targeted repair or complete rebuilding can restore service while avoiding the cost and lead time of replacement.
When refurbished makes sense
Choose a Refurbished Transformer
When repair is uneconomical or a replacement is needed quickly, a tested and warranted refurbished transformer can provide a faster, more economical alternative to a new build.
When rental makes sense
Rent for Immediate Power Needs
When power is needed before a permanent solution is available, transformer rental provides temporary capacity to maintain operations through failures, shutdowns or project requirements.
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Next step
Get your transformer assessed
Tell Us What Happened. We'll Work Out the Next Step.
Share the transformer nameplate, failure details or your latest test report. Our team will review the requirement and come back with a clear repair assessment, recommended scope, estimated timeline and quotation.
- 01Share the transformer details, fault symptoms and any test reports you have.
- 02We assess the condition and define the recommended repair scope, timeline and testing requirements.
- 03Receive a clear quotation and repair plan before work begins.