From electrical design thinking to production.
The supplied catalogue positions Graycell around distribution-class oil and dry-type transformers, compact substations, and medium-voltage solutions. Operating from a specialized facility at Khed-Shivapur, Pune, all units follow disciplined manufacturing, precision assembly, and multi-stage testing.
Manufacturing Setup
Advanced corrugated tank fabrication, vacuum pressure impregnation, and heavy assembly bays.
Testing Facility
Calibrated routine and type test bays verifying no-load loss, temperature rise, and impulse tolerance.
Quality Assurance
Manufactured to strict IS 2026, IEC 62271-202 and Siemens quality control directives.
Four Disciplined Stages of Manufacturing.
Every transformer and compact substation follows a rigorous 4-step engineering discipline from raw materials to final test bench dispatch.
01PLANT INFRASTRUCTUREManufacturing Setup
State-of-the-art manufacturing plant equipped with core stacking tables, vacuum ovens, and dedicated overhead cranes for heavy distribution transformer assembly.
02CORE & COIL WINDINGWinding & Assembly
High-conductivity electrolytic copper strip and foil windings with step-lap core joints engineered for minimal excitation losses across oil and dry-type families.
03HIGH-VOLTAGE BAYTesting & Diagnostics
Calibrated testing laboratory covering insulation resistance, impedance, turns ratio, dielectric oil breakdown, and high-voltage impulse performance to IS & IEC standards.
04STANDARDS & SAFETYQuality & Approvals
Rigorous stage-gate inspection from raw lamination to final tanking. Certified under Siemens 8FB20 technology partnership and CPRI / ERDA type testing.