6300kVA~120000kVA Three-winding transformer with NVTC

6300kVA~120000kVA Three-Winding Transformer with NVTC

When your power system demands reliable voltage regulation and robust capacity, our 6300kVA~120000kVA three-winding transformer with NVTC delivers enterprise-grade performance you can count on. Manufactured by Lijie Electric Power Technology Group across two advanced facilities spanning 500,000 square meters, these transformers feature on-load tap-changing capability with ±4×2.5% or ±8×1.25% regulation range. You'll benefit from multi-winding configurations designed for 110kV and 220kV substations, achieving temperature rises ≤65K for windings and ≤55K for top oil. With short circuit impedance of 10-18% and flexible cooling methods (ONAN/ONAF/OFAF), you get customizable solutions backed by over 160 specialized engineers.

Why Choose Three-Winding Transformers with On-Load Tap Changers?

Your control conveyance challenges require shrewd arrangements. Three-winding setups permit you to interface numerous voltage levels simultaneously—perfect when you're overseeing complex substations serving assorted loads.

The NVTC (on-load tap changer) innovation implies you can alter voltage without hindering control supply. This gets to be basic when your office encounters fluctuating loads all through day and night cycles or regular variations.

You'll appreciate the adaptability in voltage combinations. Whether you require 220kV/110kV/35kV or 110kV/35kV/10.5kV courses of action, these transformers adjust to your particular framework requirements.

Large-capacity operations advantage most from this plan. Mechanical complexes, territorial substations, and renewable vitality integration ventures all request the steadiness these transformers give.

Technical Specifications

Key Features That Benefit Your Operations

Continuous Voltage Control

You keep up steady yield voltage indeed amid top request periods. The NVTC framework alters taps whereas your transformer remains energized, avoiding expensive downtime.

Multi-Level Control Distribution

Three isolated windings donate you greatest adaptability. You can nourish diverse voltage systems from a single transformer, lessening foundation costs and impression requirements.

Advanced Cooling Efficiency

Choose the cooling strategy that matches your stack profile. Characteristic cooling (ONAN) works for unfaltering loads, whereas constrained discuss (ONAF) or constrained oil (OFAF) handles top capacity demands.

Robust Brief Circuit Protection

With impedance carefully calibrated between 10-18%, you get ideal adjust between voltage control and blame current confinement. Your framework remains secured amid irregular conditions.

Energy-Efficient Design

Class A cover and optimized center development minimize misfortunes. You'll see diminished operational costs over the transformer's 30+ year benefit life.

Applications Across Industries

Regional Substations

Power utilities depend on these transformers for venturing down transmission voltages to conveyance levels whereas serving different voltage systems simultaneously.

Industrial Manufacturing

Heavy businesses with shifting stack profiles advantage from steady voltage direction. The three-winding plan bolsters production line control dissemination nearby devoted bolsters for basic equipment.

Renewable Vitality Integration

Wind ranches and sun oriented plants utilize these transformers to interface era resources to transmit lattices whereas giving assistant control at diverse voltage levels.

Mining Operations

Remote mining destinations require reliable control change. The rough development and voltage direction capability guarantee persistent operation in requesting situations.

Why Partner with Lijie Electric?

You're working with a manufacturer that produces over 5 billion RMB in annual sales. Our two production bases in Xuzhou and Nantong employ 2,000+ professionals dedicated to transformer excellence.

Every 6300kVA~120000kVA three-winding transformer with NVTC undergoes rigorous testing at the National Transformer Quality Supervision and Inspection Center. You receive complete documentation including test reports, drawings, and operation manuals.

Our certifications speak to quality: ISO 9001:2015, CE, UL, and IEC compliance ensure your transformer meets international standards. Energy efficiency verification by CQC and PCCC confirms performance claims.

Customization capabilities mean you get exactly what your project needs. Production cycles range from 6 to 30 days depending on specifications. We provide installation guidance and spare parts support throughout your transformer's operational life.

Frequently Asked Questions

What's the difference between two-winding and three-winding transformers?

Three-winding transformers include an additional tertiary winding, allowing you to connect three different voltage levels. This eliminates the need for separate transformers when serving multiple networks, saving space and investment costs.

How does NVTC improve system reliability?

On-load tap changers adjust voltage ratios without de-energizing the transformer. You maintain power supply to critical loads even during voltage adjustments, which is impossible with off-load tap changers requiring shutdown.

Which cooling method should I choose?

ONAN suits continuous loads at rated capacity. If you experience regular overloads or operate in hot climates, ONAF provides forced air cooling. OFAF offers maximum cooling for the highest capacity applications or extreme conditions.

What's your delivery timeline for custom specifications?

Standard configurations ship within 6-15 days. Complex customizations requiring special voltage combinations or unique impedance values typically require 20-30 days. We'll provide a detailed schedule after reviewing your specifications.

Do you provide installation support?

Yes, we supply comprehensive technical documentation and can arrange installation guidance. Our engineers assist with commissioning and provide training for your maintenance teams.

What voltage combinations are available?

Common arrangements include 220/110/35kV and 110/35/10.5kV. We customize voltage ratios to match your system requirements, including special combinations for industrial or renewable applications.

Contact Us

Ready to discuss your 6300kVA~120000kVA Three-winding transformer with NVTC power transformation needs? Reach out to our engineering team at lijieelectrical@gmail.com for technical specifications and quotations.