ETRA RAIL TRACTION Oil-Filled Power Transformer

0,00 €

KOLEKTOR ETRA NORTHBRIT, Power Transformer: High-Voltage, Oil-Immersed, for railway traction

Range of oil power transformers from 10 to 500 MVA and up to 420 kV, designed for railway traction. Custom-made power transformers manufactured in Europe.

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SKU: KOLEKTOR ETRA RAIL TRACTION Category: Tags: , , , , , , , , , , , , , , , , , Brand:

Description

Description

KOLEKTOR ETRA’s Traction Transformer Solutions

KOLEKTOR ETRA® provides custom-designed traction transformers tailored to the rigorous demands of railway systems. Our solutions ensure high performance, reliability, and efficiency across a range of rail applications.

  1. Custom Engineering for Rail Systems:
    • Transformers designed for both AC and DC rail networks.
    • Configurations tailored for locomotives, high-speed trains, metros, and light rail systems.
  2. Compact and Lightweight Design:
    • Optimized for limited space and weight requirements in railway vehicles and substations.
    • Ensures easy integration into existing rail infrastructure.
  3. High Mechanical and Electrical Endurance:
    • Built to handle the stresses of frequent load variations and regenerative braking cycles.
    • Designed for continuous vibration and shock resistance.
  4. Advanced Thermal Management:
    • Cooling options such as ONAN, ONAF, or forced air cooling ensure stable operation even in extreme conditions.
  5. Energy Efficiency:
    • Use of high-grade materials and advanced manufacturing techniques to reduce no-load and load losses, lowering overall energy consumption and lifecycle costs.

US-ISATION Program

Through our US-ISATION program, launched in partnership with NORTHBRIT and the KOLEKTOR ETRA® Group, we bring comprehensive traction transformer solutions to the U.S. market:

  • Local Engineering Expertise: U.S.-based support ensures compliance with American rail standards and seamless project execution.
  • Integrated Project Management: From initial design to manufacturing, delivery, and installation, our teams provide end-to-end solutions tailored to U.S. rail systems.
  • Compliance with U.S. Standards: Fully adherent to U.S. rail and safety regulations, ensuring reliability and compatibility with local networks.

Why KOLEKTOR ETRA for Traction Transformers?

With over 90 years of expertise, KOLEKTOR ETRA® delivers robust, efficient, and tailored traction transformers for railways, metros, and high-speed rail. Our focus on energy efficiency, compact design, and reliability ensures seamless integration into modern rail systems while minimizing operational costs. Combined with our U.S.-based support and engineering expertise, we provide unmatched solutions for the American railway market.

Technical data

Additional information

Scope of application

Rail transport
Conditions of use

outside

Additional information

Generic Design Data of KOLEKTOR ETRA TRANSFORMERS

Magnetic Laminations

  • Materials:
    • Conventional Oriented C.G.O. Class Laminations
    • HI-B High Magnetic Orientation Steel Sheets
    • Laser-Treated Magnetic Laminations
  • Core Construction:
    The magnetic core (available in 2, 3, or 5 legs) is constructed by stacking steel sheets. Laminations are secured using heat-shrink polyglass strips and anti-magnetic steel clamps, with varnish-glued lower yokes and limbs to minimize oscillations and vibrations caused by magnetostriction forces.
  • Frame Design:
    The core is enclosed in a rigid frame with clamps and legs to ensure safe transportation and withstand short-circuit forces.

Windings

  • Material: High-purity electrolytic copper (Cu-ETP).
  • Design Specifications:
    • Single- or multi-layer windings for phase currents up to 1,000 A and voltages up to 72.5 kV (245 kV for custom designs).
    • Disc windings (helical, continuous, or interlaced) for higher voltage applications.
  • Properties:
    • Specific electrical conductivity: 58 Sm/mm² (10.0 MS/in²).
    • Yield strength (Rp0.2): 90–160 N/mm² (13–23 ksi).

Thermal Insulation Classes

  • Enamel Insulation (PVA): Thermal Class E (120°C/248°F), IEC 60317-0-2 compliant.
  • Paper Insulation:
    • Thermal Class A (105°C/221°F), IEC 554-3-5 compliant.
    • Thermally Improved Paper, Thermal Class E (120°C/248°F), IEC 554-3-5 compliant.

Cooling Systems

  • Designed per IEC 60076-7 and IEEE C57.12.00 standards.
  • Configurations include radiators, oil coolers, and heat exchangers (OF and OD types only) with modular components for easy installation and maintenance.
  • Cooling systems can be installed remotely and equipped with pumps for high-efficiency oil circulation and enhanced heat dissipation.

Heritage and Innovation

With a repository of over 4,000 transformer models, KOLEKTOR ETRA® blends decades of expertise with innovation, offering field-proven solutions tailored to demanding high-voltage applications in the U.S. and globally.

Testing and Standards

All transformers meet dual standards for compatibility with U.S. and international requirements:

  • IEC 60076 / IEEE C57.12.90: Temperature rise, dielectric, short-circuit, and insulation tests.
  • IEC 60354 / IEEE Loading Guide: Loading recommendations for oil-immersed transformers.
  • NF C13-200 / NESC C2: Guidelines for installations with voltages >1 kV to ≤245 kV.

Assembly Inspections

Each core, winding, reservoir, and component undergoes rigorous inspections, including:

  • Voltage ratio and interphase measurements.
  • Insulation resistance testing.
  • Short-circuit loss measurement before drying.
  • Monitoring of transformer oil during the drying process.

Tailored for the U.S. Market

Through our US-ISATION program, we adapt our transformers to meet U.S. standards and industry needs:

  • Imperial/Metric Dual Configuration: Components and systems available in imperial (lbs, inches, gallons) or metric (kg, mm, liters).
  • Compliance: Fully compliant with U.S. IEEE, ANSI, and NESC standards, ensuring seamless integration into American infrastructure.

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