From raw material inspection to final testing, every Heptacare transformer passes through rigorous quality checks backed by national and international certifications.
Four independent audits, surveilled annually. National Accreditation Board for laboratories, Bureau of Indian Standards for products, and ISO certifications for environmental and occupational-safety systems.
Unit I at Meerut is the manufacturing headquarters, with the NABL-accredited 700 kV test laboratory. Unit II at Kashipur adds dedicated production capacity, including a resin-cast line, for growing demand across India.
Manufacturing headquarters with complete end-to-end production capability, in-house fabrication unit, and NABL accredited 700 kV PD-free testing laboratory. Houses winding, insulation, drying, and assembly facilities for both MV and HV instrument transformers.
Dedicated production facility located 200 km from Delhi, expanding capacity for growing demand across India. Equipped with controlled-environment winding and insulation halls, drying autoclaves, and resin-cast manufacturing capability.
One Incoming Test Lab. Three Intermediate Test Labs. Three Final Test Labs — a gated flow of checks that follows every unit from raw material to dispatch.
Every batch of raw material is cleared here before it enters the shop floor. A dedicated oil testing facility anchors the lab, with complementary benches for paper, CRGO, conductor, and hardware checks against vendor certificates.
Stage-gate testing runs parallel to production. Core stacks, windings, and insulation assemblies are checked at every critical step so defects are caught early, never on a finished unit.
In-house capability for every routine test up to 400 kV and type / special tests per IS/IEC. The Final Testing Lab is accredited by NABL for ISO/IEC 17025:2017 — the internationally recognised standard for laboratory testing.
Five gated checkpoints. Each one sequential, each one mandatory. Non-conforming material or finished units cannot advance to the next stage without documented clearance.
Every batch of CRGO steel, copper conductor, insulating paper, and transformer oil is tested against purchase specifications before acceptance. Vendor-supplied test certificates are cross-verified with in-house measurements. Non-conforming material is quarantined and returned.
Stage-gate inspections at each critical manufacturing step: core stacking, winding, insulation wrapping, and assembly. Operators use calibrated instruments and follow documented procedures. Deviations trigger hold-point reviews before work proceeds.
All units undergo the full suite of routine tests per IEC 61869: power frequency withstand, partial discharge, ratio, polarity, and accuracy class verification. Type tests are performed on new designs and whenever design parameters change.
Dedicated witness testing bays allow customer representatives and third-party inspectors to observe tests in real time. Test reports are generated on-site and reviewed jointly before approval. NABL-endorsed certificates accompany every shipment.
Completed units pass through a final checklist covering nameplate accuracy, paint finish, terminal markings, and packaging integrity. Oil-filled units are topped up and sealed under vacuum. Dispatch clearance requires sign-off from quality, production, and logistics.
Customer witness testing and pre-despatch inspection are welcome at both manufacturing units. Bring your inspectors and we will run the routines on your schedule.