Power Transformer At Wholesale Price, Power Transformer Wholesaler, Trader, Exporters

Smriti Enterprise is a premier provider of top-quality lighting and electrical infrastructure solutions, specializing in a diverse range of products including Stadium High Mast Lighting Poles, LED High Mast Lighting Poles, 6 Mtr Octagonal Poles, Swaged Tubular Steel Poles, Tubular Steel Poles, Flag Masts, Octagonal Poles, and much more. Building on our strong manufacturing backbone and pan-India supply capabilities, we also offer reliable, high-efficiency Power Transformers for utilities, industrial facilities, EPC contractors, and large commercial projects.

Company Snapshot

• Business Type: Manufacturer, Wholesale Supplier / Wholesaler
• Year of ESTD: 2002
• Major Markets Covered: India

What Is a Power Transformer?

A power transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. In transmission and distribution networks, power transformers step up voltage for efficient long-distance transmission or step down voltage for safe distribution and end-use. Our portfolio covers ratings typically from 25 kVA up to 10 MVA with primary voltages from 3.3 kV to 33 kV and secondary voltages such as 433 V, 415 V, or 11 kV, depending on application.

Key Features & Specifications

1) Size / Dimensions

Dimensions vary by kVA/MVA rating and cooling type. Compact footprints are prioritized for urban substations and space-constrained plants. Representative envelope sizes:

Note: Exact dimensions/weights depend on vector group, impedance, accessories, and enclosure.

Power Transformer

Defined as one of the celebrated names in the market, we are involved in offering excellent quality Power Transformers. Power Transformers are essential electrical devices used to transfer electrical energy between two or more circuits through electromagnetic induction. They are commonly employed in power transmission and distribution systems to step up or step down voltage levels as required. Po

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Amorphous Core Transformer

Keeping in consideration the latest standards, we are involved in supplying only high quality Amorphous Core Transformer at reasonable prices. Amorphous Core Transformers are advanced electrical transformers designed for efficient power distribution and energy conservation. They feature a core made from non-crystalline or amorphous metal alloys, offering superior magnetic properties and reduced en

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Dry Type Transformer

We are reckoned as the noted Supplier of Dry Type Transformers as we are capable of meeting the exact requirements of the buyers. Dry Type Transformers are electrical transformers that use air or solid insulation instead of liquid coolant for cooling and insulation. They are commonly used in indoor environments where the use of liquid-filled transformers is impractical or prohibited. Dry Type Tra

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3D Core Transformer

Our organization is avidly engaged in supplying an exclusive range of 3D Core Transformer at reasonable prices. 3D Core Transformers utilize advanced three-dimensional core designs to enhance energy efficiency and reduce losses compared to traditional transformer designs. They are suitable for various power distribution and industrial applications. 3D Core Transformer Features: Innovative thr

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2) Material

• Core: Cold-rolled grain-oriented (CRGO) silicon steel or amorphous metal for low core losses.
• Windings: Electrolytic grade copper (preferred for lower losses) or aluminum as per specification.
• Tank & Radiators: High-grade mild steel with anti-corrosive coating; hot-dip galvanization available.
• Insulation: High-temperature cellulose paper/pressboard; Class A/F as required.
• Dielectric Fluid: Mineral oil (IS 335), FR3/ester fluid on request for enhanced fire safety.
• Bushings & Hardware: Porcelain/polymer bushings, copper/brass fittings, IP rated marshalling boxes.

3) Design / Type Variations

• Cooling: ONAN, ONAF, OFAF, ODAF; forced-oil and forced-air options for higher ratings.
• Core Type: Core-type (standard) and shell-type (special applications).
• Mounting: Pole-mounted (up to ~250 kVA) and ground/substation-mounted (400 kVA and above).
• Enclosure: Outdoor IP55/IP65; indoor IP41; tamper-proof for utility distribution.
• Tapping: Off-Circuit Tap Changer (OCTC) or On-Load Tap Changer (OLTC) with AVR panel.
• Vector Groups: Dyn11, Yyn0, YNd1, etc., as per system requirements.
• Standards: IS/IEC compliant designs (e.g., IS 1180 for distribution, IEC 60076 for power units).

4) Capacity / Performance

• Ratings: 25 kVA to 10 MVA and above (custom on request).
• Primary Voltage: 3.3/6.6/11/22/33 kV (others on request).
• Secondary Voltage: 433/415 V, 3.3/6.6/11 kV, etc.
• Frequency: 50 Hz (60 Hz on request).
• Impedance: As specified (e.g., 4% to 8% typical), ensuring fault level coordination.
• Losses: Meets/starred energy-efficiency levels; low no-load and load losses for lifecycle savings.
• Temperature Rise: 50/55°C (oil/winding) or as per project specifications.
• Noise Level: Optimized core clamping and step-lap design for reduced hum in urban settings.

Types / Variants Available

1) Distribution Transformers (25 kVA – 2.5 MVA)

Use Cases: Housing colonies, commercial complexes, MSMEs, educational campuses, hospitals, and retail parks where dependable LV supply is crucial.

• Pole-mounted compact units for rural/urban distribution.
• Ground-mounted, tamper-proof designs for utilities and DISCOMs.
• Energy-efficient amorphous-core options for reduced no-load losses.

2) Power Transformers (3 MVA – 10 MVA+)

Use Cases: Grid substations, industrial plants, independent power producers, and renewable evacuation yards requiring step-up/step-down at 11/22/33 kV and above.

• OLTC with AVR for precise voltage regulation under varying loads.
• Enhanced cooling (ONAF/OFAF/ODAF) for continuous duty at higher loads.
• Custom vector groups and impedance for parallel operation.

3) Furnace / Rectifier Transformers

Use Cases: Steel, foundry, and metallurgical processes needing high currents and robust duty cycles.

• Special insulation and thermal design for frequent load swings.
• Optional DC rectifier integration, harmonic mitigation features.

4) Solar / Wind Evacuation Transformers

Use Cases: Solar PV parks and wind farms for evacuation to 11/22/33 kV networks with fluctuating generation profiles.

• Low-loss cores for improved plant CUF; provision for SCADA/IoT monitoring.
• FR3/ester fluids option for enhanced fire safety and sustainability.

5) Auto-Transformers (Special Order)

Use Cases: Interconnecting grids of different voltages; soft-starting large motors.

• Lower size and cost at certain ratios; used where isolation is not mandatory.

Representative Models & Quick Selection Guide

Advantages / Benefits

• Energy-Efficient Operation: Low core and copper losses for reduced lifecycle cost.
• Robust Reliability: Vacuum oil filling, effective cooling, and quality insulation extend service life.
• Safety & Compliance: Designs aligned with relevant IS/IEC standards; options for ester fluids.
• Custom Engineering: Vector group, tapping, enclosure, and accessories tailored to your network.
• Smart Readiness: Sensors for oil temperature, winding temperature, and provision for remote monitoring.
• Ease of Installation: Skid and wheel options, standardized pad-mount arrangements, and clear terminal markings.
• After-Sales Support: Commissioning assistance, spares, oil testing, and preventive maintenance programs.

Applications

• State utilities and DISCOM substations.
• Industrial plants: textiles, chemicals, steel, FMCG, agro-processing.
• Infrastructure: airports, railways, metro, smart-city grids.
• Commercial real estate: malls, IT parks, hospitals, hotels.
• Renewables: solar/wind evacuation and hybrid microgrids.

Quality Assurance & Testing

Each unit undergoes routine and type tests as per applicable standards. Tests typically include: turns ratio, polarity and phase, winding resistance, no-load losses and current, load losses and impedance, induced over-voltage, separate source withstand, insulation resistance (IR), oil BDV, temperature-rise (for type), and noise measurement. Factory acceptance test (FAT) reports are provided with dispatch.

Accessories & Options

• Oil level indicator, pressure relief device, magnetic oil gauge.
• Winding/Oil temperature indicators with alarms and trips.
• Buchholz relay (for conservator-type transformers).
• Marshalling box with terminal blocks and space heaters.
• On-Load Tap Changer (OLTC) with AVR control panel.
• Off-Circuit Tap Links (OCTC) for distribution units.
• RTCC panel, SCADA/IoT gateway, digital meters.
• Oil conservator with breather or sealed tank design.
• Pad-mount/tamper-proof enclosures for public areas.

Buying Guide (Optional)

Factors to Consider Before Purchasing

1. Load Study: Calculate present and future kVA demand, diversity factor, and growth projection.
2. Voltage Levels & Vector Group: Match to your upstream/downstream systems (e.g., Dyn11 for distribution).
3. Efficiency & Losses: Evaluate no-load and load loss guarantees; lower losses reduce lifetime energy cost.
4. Impedance & Short-Circuit Levels: Ensure coordination with switchgear and fault current ratings.
5. Tap Changer Selection: OCTC for stable loads; OLTC with AVR for fluctuating or critical processes.
6. Cooling Method & Noise: Choose ONAN for simplicity; ONAF/OFAF where high duty or ambient temperatures apply.
7. Location & Enclosure: Outdoor/indoor, IP rating, salt-mist/corrosion protection if coastal.
8. Fluid Choice: Mineral oil vs. ester fluids depending on fire safety and environmental goals.
9. Accessories & Monitoring: Alarms, trips, RTCC, remote monitoring for predictive maintenance.
10. Compliance & Documentation: Standards, routine/type test certificates, drawings, and QAP.

Indicative Wholesale Price Ranges (Ex-Factory)

Prices vary with copper/aluminum windings, loss level, OLTC/OCTC, enclosure, and accessories. Typical indicative ranges:

Disclaimer: These are broad market estimates for guidance only. Final pricing depends on specification, copper index, and order quantity.

Maintenance Tips (Maximize Uptime)

• Conduct visual inspections for leaks, corrosion, unusual noise, or hot spots.
• Monitor oil level, oil temperature, and winding temperature indicators.
• Test oil BDV and moisture content periodically; replace/rehabilitate oil if below thresholds.
• Check bushings for tracking/cracks; clean insulators to prevent surface leakage.
• Verify protection devices: Buchholz relay, pressure relief device, alarms/trips, AVR operations.
• Maintain earthing resistance within norms; tighten terminals and check for hot connections.
• Keep radiators/airways free of dust; ensure fans and pumps (if any) are operational.
• Record a maintenance log with load profile and event history; use condition monitoring analytics when available.

Packaging, Logistics & Delivery

• Skid-mounted and braced for overland transport; weather-proof tarping.
• Oil-filled or dry-shipped with nitrogen padding as specified.
• Clear lifting points, center of gravity marking, and handling instructions.
• Dispatch dossier: test reports, drawings, manuals, and warranty documents.

Why Buy Power Transformers from Smriti Enterprise?

• Manufacturing Heritage: Since 2002, trusted by utilities, EPCs, and industrial buyers across India.
• Engineering Depth: Cross-domain expertise from high-mast poles to substations ensures system-level thinking.
• Customization: Tailored ratings, vector groups, enclosures, and monitoring packages.
• Pan-India Supply: Streamlined logistics and service network for quick turnarounds.
• Competitive Wholesale Pricing: Value-engineered designs without compromising safety or reliability.

Frequently Asked Questions (FAQs)

Q1: How do I choose between OCTC and OLTC?

Go with OCTC for stable loads where occasional manual tap change during shutdown is acceptable. Choose OLTC with AVR for critical facilities or varying loads that need live voltage regulation.

Q2: Copper vs. Aluminum windings — which is better?

Copper offers lower losses and compact size; aluminum can reduce initial cost. Both are reliable when designed correctly; your choice should balance efficiency goals and budget.

Q3: What is the typical delivery time?

Lead time depends on rating and options. Standard distribution units are generally faster than large OLTC power transformers. For current schedules, check with our sales team for your exact configuration.

Q4: Can you provide ester-fluid transformers for fire-sensitive sites?

Yes. We offer natural ester (FR3) fluid options with enhanced fire point and biodegradability for hospitals, malls, and indoor substations.

Q5: Do you support installation and commissioning?

We provide on-site supervision, testing, and commissioning support. Comprehensive AMC (Annual Maintenance Contract) plans are also available.

Request a Quote

Share your single-line diagram (SLD), expected load profile, voltage levels, preferred vector group, tapping range, cooling type, enclosure IP rating, and accessory list. Our engineering team will revert with an optimized specification and competitive wholesale price.

Company Details

• Business Type: Manufacturer, Wholesale Supplier / Wholesaler
• Year of ESTD: 2002
• Major Markets Cover: India
• Product Lines: Power Transformers, Stadium High Mast Lighting Poles, LED High Mast Lighting Poles, 6 Mtr Octagonal Poles, Swaged Tubular Steel Poles, Tubular Steel Poles, Flag Masts, Octagonal Poles, and more.

Quick Specification Template (Copy & Fill)

Get in Touch

Looking for Power Transformers at Wholesale Price? As a trusted manufacturer and wholesaler since 2002, Smriti Enterprise delivers engineered reliability across India. Send us your requirement to receive a tailored quotation and technical offer.