Salient Features

• Energy-efficient design meeting Level-2 / Level-3 (Star Rated) efficiency standards
• Available in ratings from 25 kVA to 25000 KVA
• Primary Voltage: 11 kV / 22 kV / 33 kV
• Secondary Voltage: 415 V / 433 V, 3-Phase, 50 Hz
• Vector Group: Dyn11 (standard), others on request
• Cooling Type: ONAN / ONAF
• Compact, rugged, and maintenance-free design
• Hermetically sealed or conservator type construction
• Designed for operation at ambient temperatures up to 50°C

Constructional Highlights

• Core: High-grade, cold-rolled grain-oriented (CRGO) or amorphous metal core for reduced no-load losses.
• Windings: High-conductivity electrolytic copper or aluminium with multi-layer insulation for improved dielectric strength.
• Tank: Fabricated from mild steel, pressure-tested and painted with anti-corrosive coating for longer service life.
• Oil: High-grade mineral or synthetic ester oil with excellent thermal and oxidation stability.
• Terminations: High-voltage and low-voltage bushings as per IS/IEC specifications.

Protection & Accessories

• Off-Circuit Tap Changer (±5% in 2.5% steps) or On-Load Tap Changer (OLTC)
• Oil Level Indicator, Temperature Gauge, and Pressure Relief Device
• Buchholz Relay for internal fault protection
• Lifting lugs, rollers, and earthing terminals
• Optional smart monitoring sensors (IoT-enabled)

Testing & Quality Assurance

• Every transformer undergoes routine and type testing as per IS 1180 / IEC 60076 standards at NABL-accredited laboratories.
• Strict quality control at each stage ensures reliable operation, reduced downtime, and enhanced safety in the field.

Applications

• Power Distribution Utilities
• Industrial and Commercial Complexes
• Renewable Energy Projects (Solar / Wind)
• Residential Townships
• Infrastructure and Public Utilities

Optional Features

• Hermetically sealed, maintenance-free design
• Smart monitoring with digital sensors
• Eco-friendly ester-filled transformers
• Custom designs as per customer specifications