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Transformer repair and rewinding

Name: Transformer repair and rewinding
Brand: SWAPNA POWER TRANSFORMER & SERVICES
Price: 150000 INR
Availability: InStock

Price 150000 INR/ Number

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MOQ : 1 Number

Transformer repair and rewinding Specification

Load Loss
1% - 3%, as per rating

Coil Material
High Purity Copper / Aluminum

Operating Temperature
-20C to +60C

Capacity
25 kVA - 5000 kVA

Rated Voltage
Custom, up to 33 kV

Voltage Booster Type
Tap Changer/Off-circuit Tap Links

Low Voltage
433 V / 415 V / 220 V

Standard
IS 2026, IEC 60076

High Voltage
Up to 33,000 V

Dimension (L*W*H)
Varies by design, e.g. 1200 mm x 800 mm x 1500 mm

Cooling Type
ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced)

Product Type
Distribution and Power Transformer

Material
Copper/Aluminum Windings, Laminated Steel Core

Output
Custom as per design

Frequency (MHz)
50/60 Hz

Efficiency
Up to 98%

Phase
Single Phase / Three Phase

Usage
Transformer rewinding services

Coil Structure
Toroidal/Layer Wound

Coil Number
2-3 (Primary/Secondary/Tertiary)

Power Scope
Up to 5000 kVA or as specified

Weight
Varies by Rating, typically 100 kg - 3000 kg

Mounting Type
Floor Mounted

Testing
Routine & Type Tested as per IS/IEC

Insulation Class
Class A / Class B / Class F as required

Winding Resistance Tolerance
5%

Noise Level
Below 65 dB

Painting/Coating
Anti-corrosive Enamel

Impedance Voltage
Up to 6%

Core Type
CRGO / Amorphous

Dielectric Strength
Above 35 kV

Transformer repair and rewinding Trade Information

Minimum Order Quantity
1 Number

Supply Ability
1000 Per Day

Delivery Time
1 Days

About Transformer repair and rewinding

Transformer repair and rewinding is the process of fixing broken electrical coils inside a transformer. Technicians take apart the unit, remove burnt or damaged copper or aluminum wire, clean the steel core, and wrap new insulated wire to restore power efficiency and save money over buying a new unit.

State-of-the-Art Transformer Rewinding

We specialize in rewinding transformers with precision, accommodating varied coil structures such as toroidal and layer-wound designs. Our experienced technicians work with power ratings from 25 kVA up to 5000 kVA, ensuring winding resistance tolerance within 5%. Every project is completed with strict adherence to IS/IEC standards and undergoes thorough type and routine testing.

Comprehensive Repair & Upgrade Solutions

Our process involves detailed diagnostics, core and coil inspection, high-purity copper or aluminum rewinding, and meticulous dielectric tests above 35 kV. Floor-mounted units can be restored to original or enhanced specifications, including impedance voltage up to 6%, and ultra-low noise levels below 65 dB for smooth and quiet operations.

Durable and Custom-Fit for Every Requirement

We apply anti-corrosive enamel coatings to ensure strength against harsh environments. Each transformer repair is custom-built to suit the precise dimensional, voltage, and efficiency requirements of our clients, with mounting and cooling systems tailored for the application. Compliance with IS 2026 and IEC 60076 ensures reliability and industry-standard performance.

FAQ's of Transformer repair and rewinding:

Q: How is the transformer rewinding process performed to ensure quality and reliability?

A: The rewinding process begins with thorough inspection and core lamination checks. We remove existing windings, select suitable insulation (Class A, B, or F), and wind high-purity copper or aluminum wire with precision. All windings are tested for dielectric strength above 35 kV, and resistance tolerance is kept within 5%. The entire process conforms to IS 2026 and IEC 60076 standards to guarantee reliability and safety.

Q: What types of transformers can be serviced with your repair and rewinding solutions?

A: We service single-phase and three-phase transformers (up to 5000 kVA) with core types including CRGO and Amorphous. Both ONAN and ONAF cooling types are supported, and we handle custom voltages up to 33 kV. Our rewinding and repair services are suitable for industrial, commercial, and infrastructure applications.

Q: When should a transformer be considered for repair and rewinding instead of replacement?

A: A transformer should be considered for repair and rewinding when experiencing performance loss, insulation breakdown, unusually high noise, or failed routine/type tests. Timely servicing extends equipment life and saves significant costs compared to full replacement. We recommend periodic checks and prompt servicing when load losses or temperature issues are detected.

Q: Where are your transformer repair and rewinding services available, and do you offer on-site support?

A: We supply transformer repair and rewinding services to industries, utilities, and commercial clients across various regions. On-site assessment and minor repairs can be arranged, while major rewinding and refurbishments are completed at our specialized facility, equipped with advanced tools and compliance testing systems.

Q: What quality assurances and tests are conducted after rewinding a transformer?

A: After rewinding, each transformer undergoes dielectric strength testing (above 35 kV), winding resistance verification (within 5% tolerance), routine and type tests as per IS/IEC standards, and load loss assessment (1-3% as per rating). We also inspect and test for noise (below 65 dB) and confirm the integrity of anti-corrosive enamel coatings.

Q: What are the key benefits of choosing professional transformer repair and rewinding services?

A: Opting for professional repair and rewinding extends transformer life, enhances efficiency (up to 98%), reduces operational downtime, and ensures compliance with IS 2026 and IEC 60076. It also enables customized upgrades in insulation, voltage, and mounting, offering cost-effective, sustainable solutions without the expense of purchasing new equipment.

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