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  • Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer
  • Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer
  • Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer
  • Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer
  • Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer
  • Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer
Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer

Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer

$63000.00-$237000.00/ Set|1 Set/Sets(Min. Order)

Customization:

Customized logo（Min.Order: 1 pieces）
Customized packaging（Min.Order: 1 pieces）
Graphic customization（Min.Order: 1 pieces）
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Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Power Voltage Transformation: Steps down voltage from 110kV to 6.3kV, enabling efficient power distribution in high-voltage networks.
  • On-Load Tap Changer (OLTC): Allows real-time voltage regulation without interrupting power supply, ensuring stable output under varying load conditions.
  • Toroidal Coil Structure: Enhances energy efficiency and reduces electromagnetic interference due to optimized magnetic flux distribution.

Key features

  • 1. Material Technology

    • With a corrosion-resistant metal body and toroidal coil structure, ensure durable operation in harsh industrial environments while minimizing energy loss. ~30% more efficient than traditional non-toroidal designs*

  • 2. Interactive Design

    • With an integrated on-load tap changer and digital control panel, adjust voltage output in real-time without shutdown, enhancing uptime compared to traditional offline tap changers*.

  • 3. Performance Parameters

    • Supports input voltages up to 400kV and delivers 12,500kVA output, handling heavy loads with ~20% higher capacity than standard oil-filled transformers in the same class*.

  • 4. Scenario Solutions

    • Customizable voltage ratings (6.3kV to 400kV) and robust cooling systems enable seamless integration into industrial, commercial, or grid applications, outperforming non-adaptable models in diverse scenarios*.

  • 5. Certification Standards

    • UL-certified for safety and reliability, ensuring compliance with global standards—unlike uncertified alternatives that may lack rigorous testing*.

Product details

Power transformers 12500kva 10mva 110kv 6.3KV Three Phase StepDown 5mw Oil Filled Power Transformer with on Load Tap Changer

The Power Transformers 12500kVA 110kV Three Phase Step-Down Oil-Filled Transformer with On-Load Tap Changer is a robust, high-capacity electrical solution designed for industrial power distribution. Built with corrosion-resistant steel and featuring a toroidal coil structure, this transformer ensures efficient energy transfer and stable voltage regulation. Its forced-air cooling system with vertical fins and UL certification guarantee reliability in harsh environments, while the on-load tap changer enables real-time voltage adjustments without interrupting power supply.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialSteel with corrosion-resistant paintIndustrial facilities requiring durability and longevity
Coil StructureToroidal designHigh-efficiency power transfer in substations
Cooling SystemForced-air cooling with vertical finsHigh-temperature environments (e.g., power plants)
Input Voltage69kV, 35kV, 132kV, 220kV, 400kV, 115kV, 110kVGrid integration across diverse voltage grids
CertificationUL compliantSafety-critical infrastructure projects
PhaseThree-phaseIndustrial and commercial power distribution
Output Voltage6.3kVFeeding medium-voltage loads in factories
Tap ChangerOn-load tap changerReal-time voltage regulation in fluctuating loads

Customization guide

Adjustable parameters include:

  • Voltage Ratings: Customize input/output voltages (e.g., 35kV to 400kV) to match grid requirements.
  • Cooling Capacity: Enhance thermal management with upgraded radiator fins or oil circulation systems.
  • Environmental Protection: Add IP65-rated enclosures for dusty/moist environments or Arctic-grade insulation for extreme temperatures.

Get inspired

With its scalable design and UL certification, this transformer is ideal for powering large industrial complexes, data centers, or mining operations. The toroidal coils reduce energy loss by 20% compared to conventional designs, while the on-load tap changer ensures uninterrupted operation during load fluctuations.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Efficiency95%+2% (97%)+3% (98%)
Voltage Regulation±2%±1.5%±1%
Thermal Capacity12500kVA+20% (15000kVA)+44% (18000kVA)*

Supplier's note

  1. Technical Breakthroughs:

    • Toroidal Coils: Reduce energy loss by 20% compared to conventional designs.
    • On-Load Tap Changer: Enables real-time voltage adjustments, minimizing downtime.
    • UL Certification: Ensures compliance with global safety standards for hazardous environments.

  2. Version Selection Guide:

    • Base Model: Ideal for standard industrial plants (e.g., manufacturing facilities) requiring stable 12500kVA output.
    • Advanced Model: Recommended for facilities with fluctuating loads (e.g., data centers) needing ±1.5% voltage precision.
    • Pro Model: Best for high-demand applications (e.g., mining operations) where 18000kVA capacity and ±1% regulation are critical.

*Pro Model thermal capacity exceeds industry benchmarks by 44%, enabling support for ultra-large-scale grids.

Frequently asked questions

  • Which 12500kva three-phase oil-filled transformer suits heavy industrial applications?

  • How to maintain the cooling system of a 110kv oil-filled power transformer?

  • Oil-filled vs dry-type transformer: Which is better for power plants?

  • Can 10mva power transformers be customized for 6.3kv output?

  • Is the toroidal coil structure in 5mw transformers UL-approved?

  • What’s the best 110kv transformer for on-load voltage regulation?

  • Can I upgrade a 35kv input transformer to 132kv capacity?

  • Does the 6.3kv step-down transformer resist extreme temperatures?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Voltage RatingIndustrial power grids, substationsIndustry: Up to 35kV input (IEC 60076-7)
Base: 110kV input (IEC compliant)
Advanced: 220kV input ▲▲ (higher capacity)		Handles high-power loads, integrates into high-voltage gridsRequires specialized installation for higher voltages
Cooling SystemContinuous industrial operationIndustry: Natural air cooling
Base: Forced-air cooling (15% better heat dissipation)
Advanced: Oil-forced cooling ▲ (20% efficiency)		Reduces overheating risks, extends lifespanHigher maintenance costs for advanced systems
Coil StructureHigh-efficiency power distributionIndustry: Rectangular coils
Base: Toroidal coils (10% lower losses)
Advanced: Toroidal + copper winding ▲ (15% efficiency)		Minimizes energy waste, improves power factorHigher manufacturing costs for advanced designs
CapacityLarge facilities (factories, data centers)Industry: 5000kVA
Base: 12500kVA ▲▲
Advanced: 15000kVA ▲▲▲ (supports 3x larger loads)		Accommodates heavy-duty applicationsBulkier, heavier, and requires more space
On-Load Tap ChangerDynamic voltage regulationIndustry: Off-load tap changer
Base: On-load tap changer (±5% adjustment)
Advanced: ±10% adjustment ▲ (real-time stability)		Maintains stable output without shutdownAdds mechanical complexity and cost
CertificationGlobal compliance-driven projectsIndustry: IEC
Base: UL ▲ (North America)
Advanced: UL + CE ▲▲ (global markets)		Ensures regulatory compliance in key regionsHigher certification costs and documentation requirements

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