Dynamic Short-Circuit Resilience
Engineered with reinforced core-coil clamping, high-density insulating pressboard, and rigid coil bracing to withstand severe short-circuit electromagnetic forces and line surges without mechanical deformation.
Synergy Transformers Pvt. Ltd. is a premier Indian manufacturer and exporter of high-reliability oil-immersed power transformers. Designed and produced at our state-of-the-art facility in Rajkot, Gujarat, our power transformers are engineered to step up or step down transmission voltages across power generation plants, primary electrical substations, renewable energy parks, and heavy industrial facilities.
Built for a minimum 25-year trouble-free service life, every unit adheres strictly to IEC 60076, IS 2026, and ANSI standards. Our engineering team custom-sizes core flux density, winding arrangement, cooling systems, and protection suites to guarantee optimal voltage regulation under severe grid variations and dynamic short-circuit stresses.
Our power transformers combine precision material selection with advanced thermal and electrodynamic engineering.
Engineered with reinforced core-coil clamping, high-density insulating pressboard, and rigid coil bracing to withstand severe short-circuit electromagnetic forces and line surges without mechanical deformation.
Utilizing prime-grade Cold Rolled Grain Oriented (CRGO) steel laminations with step-lap mitred joints. This structural precision minimizes no-load losses, reduces magnetizing current, and lowers operating noise levels.
Available with On-Load Tap Changers (OLTC) integrated with Automatic Voltage Regulators (AVR) for continuous system voltage control, or Off-Circuit Tap Changers (OCTC) for manual ratio adjustments.
Below is our standard manufacturing scope for power transformers. Detailed Guaranteed Technical Particulars (GTP) are supplied with technical proposals.
| Technical Parameter | Standard Envelope & Capabilities |
|---|---|
| Rating Capacity | Up to 3500 kVA (3.5 MVA) |
| Voltage Ratings | 11 kV, 22 kV, 33 kV, 66 kV, and 110 kV primary/secondary voltage classes |
| Phase & Frequency | 3-Phase, 50 Hz or 60 Hz system operation |
| Cooling System | ONAN (Oil Natural Air Natural) / ONAF (Oil Natural Air Forced) options |
| Vector Group | Dyn11, YNd11, YNyn0, or custom configuration according to single-line diagram |
| Tap Changer | Off-Circuit Tap Changer (+5% to -10% in steps of 2.5%) or On-Load Tap Changer (OLTC) (+5% to -15% in steps of 1.25%) |
| Winding Material | High-conductivity continuous copper wire / foil with paper insulation (Class A) |
| Insulation & Dielectric | Class A insulation, uninhibited mineral oil conforming to IEC 60296 / IS 335 |
| Reference Standards | IEC 60076 series, IS 2026, IS 1180, ANSI C57, IEEE standards |
Every power transformer is fitted with industry-trusted instrumentation to ensure complete network protection and remote diagnostics.
Oil Temperature Indicators (OTI) and Winding Temperature Indicators (WTI) with micro-switch contacts for alarm, trip, and cooling fan control, complete with remote RTD sensors.
Double-float Buchholz relays with shut-off valves, magnetic oil level gauges (MOG) with trip contacts, and spring-loaded pressure relief devices (PRD) for internal fault detection.
Dehydrating silica gel breathers, conservator tanks with air-cell diaphragms, and thermosiphon filter arrangements to maintain high dielectric oil strength over time.
Our dedicated test bay in Rajkot carries out complete routine testing prior to dispatch clearance. International procurement agents and third-party inspectors are invited to witness testing.
Measurement of winding resistance, voltage ratio, phase displacement (vector group), insulation resistance, separate source AC withstand voltage, induced overvoltage, no-load loss, and load loss impedance.
We routinely accommodate Factory Acceptance Testing witnessed by independent inspection agencies, including SGS, TUV, Bureau Veritas, and Intertek for export projects.
Units are prepared for containerized export shipping using heavy-duty base frames, nitrogen-purged transport options, rust-preventive coatings, and vacuum-sealed wooden casing.
Synergy manufactures utility and industrial power transformers up to 3500 kVA (3.5 MVA) rating, with primary and secondary voltage classes up to 33 kV, 66 kV, and 110 kV. Each transformer is customized to meet specific grid conditions, vector groups, and load profiles.
Our power transformers comply with IEC 60076 (Parts 1 to 5), IS 2026, IS 1180, ANSI C57, and relevant IEEE guidelines. Design calculation sheets, routine test dossiers, and guaranteed technical particulars (GTP) are supplied for consulting approval.
We provide both On-Load Tap Changers (OLTC) for seamless automated voltage adjustment while energized, complete with Remote Tap Change Control (RTCC) panels and AVRs, as well as Off-Circuit Tap Changers (OCTC) for manual adjustments when de-energized.
Yes. We welcome customer engineers and third-party inspection firms (e.g., SGS, TUV, Bureau Veritas) to witness routine testing at our Rajkot facility. Full test schedules and documentation are prepared in advance of witness dates.