Quality & Testing

DURAFLUX transformer quality testing laboratory

Our Quality Policy

Built Right. Tested Thoroughly.

At DURAFLUX, quality is not an afterthought — it is engineered into every transformer from the very first step. Our manufacturing processes are designed to meet and exceed the requirements of Indian Standards (IS) and industry best practices.

Every transformer undergoes a rigorous multi-stage quality inspection and testing protocol before it leaves our facility. We maintain detailed test records for every unit, ensuring complete traceability.

IS 1180 & IS 2026 Compliance
BIS Certified Manufacturing Processes
High-Grade CRGO Core Material
Premium Quality Copper / Aluminium Windings
Grade A Insulating Oil
Detailed Test Reports for Every Unit

Testing Protocols

Comprehensive Testing at Every Stage

Routine Tests

Performed on every transformer before dispatch.

Measurement of Winding Resistance
Measurement of Voltage Ratio
Measurement of Short-Circuit Impedance and Load Loss
Measurement of No-Load Loss and Current
Dielectric Tests (Induced & Applied Voltage)
Separate Source Power Frequency Voltage Test
Oil Leakage Test

Type Tests

Conducted for design qualification and standard compliance.

Temperature Rise Test
Lightning Impulse Voltage Test
Switching Impulse Voltage Test
Pressure Test on Tank
Short-Circuit Withstand Capability
Sound Level Measurement
All Routine Tests Included

Special Tests

Available on request per customer specification.

Measurement of Zero-Sequence Impedance
Harmonics Measurement
Dissolved Gas Analysis (DGA)
Sweep Frequency Response Analysis (SFRA)
Partial Discharge Measurement
Insulation Power Factor Test
Capacitance & Tan Delta Test

Our Process

Multi-Stage Quality Assurance

Step 1

Raw Material Inspection

All incoming materials — CRGO core, copper/aluminium conductors, insulation, oil — inspected to verify compliance with specifications.

Step 2

In-Process Inspection

Quality checks at every manufacturing stage — core stacking, coil winding, assembly, vacuum drying, and oil filling.

Step 3

Pre-Dispatch Testing

Complete routine testing on every finished transformer with formal test reports signed off by our QA engineer.

Step 4

Final QA Sign-Off

Final inspection of dimensions, ratings, fittings, and nameplate before the unit is approved for dispatch.