“Where Expertise Meets Performance.”
Our Products & Services
What We Offer?
At Stelor, we offer a complete range of transformer solutions designed to meet the needs of utilities, industries, infrastructure developers, and international clients. Backed by four decades of experience and a legacy of uncompromising quality, our products are engineered for reliability, efficiency, and long operational life.
Our offerings cover manufacturing, special-purpose solutions, repair & refurbishment, and end-to-end service support.
Distribution Transformers
Reliable, efficient, and built to withstand real-world grid conditions across India and international markets.
Key Features
- Wide rating range (6.3 kVA to 2000kVA)
- CRGO high-grade core
- Copper or aluminium windings
- ONAN cooling
- Low-loss designs
- Robust tank construction
- Suitable for rural, semi-urban & urban electricity networks
Typical Applications
- Housing colonies
- Industrial estates
- Commercial complexes
- Institutional facilities
- Agriculture & rural distribution networks
Power & Special Purpose Transformers
We offer a range of custom-built transformers for specialised industrial and operational needs.
Furnace Transformers
Designed to handle extreme thermal cycles and harmonic distortions in steel and melting industries.
Applications:
Induction furnaces, steel melting units, industrial heating operations.
Dry-Type Transformers
Safe, low-maintenance transformers ideal for indoor and sensitive installations.
Options:
- Cast resin dry-type
- VPI/VPE construction
Applications:
Hospitals, high-rise buildings, malls, data centres, commercial buildings
Isolation & Earthing Transformers
For controlled power distribution, sensitive load protection, and enhanced safety.
Applications:
IT facilities, telecom, industrial plants, laboratories
Solar & Renewable Duty Transformers
Designed for inverter-driven loads, harmonics, and fluctuating input/output from renewable systems.
Applications:
Solar farms, solar parks, rooftop solar infrastructure
Compact Substations (CSS)
Integrated transformer + HT/LT panel solutions for modern infrastructure.
Applications:
Smart townships, commercial buildings, hospitals, railways, metro systems.
Services Offered
- Rewinding (HT/LT coils)
- Core Building & Replacement
- Tank Repairs & Fabrication
- Oil Filtration, Dehydration & Replacement
- Bushing Replacement
- Gasket & Sealing Work
- Conservator Overhauling
- Vacuum Drying
- Full Diagnostic Assessment
What Stelor Choose
- Proven expertise since 1987
- 1,00,000+ transformers delivered & serviced
- Tank Repairs & Fabrication
- Oil Filtration, Dehydration & Replacement
- Full Diagnostic Assessment
With more than 40 years of PSPCL-trusted repair experience, Stelor offers complete refurbishment solutions for all categories of electrical transformers
Transformer Repair & Refurbishment Services
Annual Maintenance Contracts (AMC)
Comprehensive maintenance packages to ensure uninterrupted operation and long-life performance.
AMC Includes
- Preventive maintenance visits
- Routine oil testing
- Visual inspection & minor rectification
- Thermal scanning
- Load analysis
- Emergency support
- Performance diagnostics
Suitable For
- Private developers
- Industrial plants
- Educational & healthcare institutions
- Govt. utilities
- Renewable power installations
Testing & Quality Control
Every Stelor transformer undergoes a structured, multi-stage quality process.
In-House Tests Include
- Turns ratio Test.
- Winding resistance Test.
- IR value Testing.
- No-load & full-load loss Tests.
- Polarity Test.
- High Voltage Test.
- BDV Testing.
- Visual and Dimensional Inspection.
A detailed test report is provided for every unit.
Engineering &
Custom Solutions
Stelor provides design support and custom solutions for clients requiring specialised engineering.
Capabilities
- Tailor-made kVA ratings
- Custom vector groups
- Special cooling arrangements.
- Higher efficiency designs.
- Industry-specific configurations
- Export-specific customisation
Industries We Serve
Electricity Board & Utilities
Industrial & Manufacturing Plants
Steel & Furnance Units
Infrastructure Developers
Hospitals & Institutions
Residential & Commercial Townships
Oil & Gas Installation
Renewable Energy Projects
Export & International Clients
Service and Support
We offer end-to-end assistance throughout the lifecycle of our products.
Support Includes
- Pre-sales guidance
- Technical assistance
- Installation support
- On-site troubleshooting
- AMC & periodic maintenance
- Post-service performance monitoring
Our team ensures reliable, responsive, and transparent service always.