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110kV-220kV Auxiliary Transformer(Transformer for generation)

  • 110kV-220kV Auxiliary Transformer(Transformer for generation)

Key attributes

Brand ROCKWILL
Model NO. 110kV-220kV Auxiliary Transformer(Transformer for generation)
Rated frequency 50/60Hz
Series S

Product descriptions from the supplier

Description

Description of Aux Transformer

An Auxiliary Transformer (Aux Transformer) is a specialized low-to-medium voltage transformer designed to supply reliable power to auxiliary systems in industrial facilities, power plants, substations, and large commercial complexes. Its core function is to step down high-voltage electricity (typically 10kV–35kV) from the main grid or generator to low-voltage levels (380V/220V) suitable for auxiliary equipment, such as pumps, fans, lighting, control systems, and communication devices. These auxiliary systems, though not directly involved in primary power generation or transmission, are critical for maintaining the overall operational efficiency, safety, and stability of the facility.

In normal condition the standing by transformer stays in hot condition, i.e. high voltage side is charged. Once any problem happens to the main transformer, the standing by transformer will be put in operation, which is for internal use only.

Features of Aux Transformer

  • Reliability-Focused Design: Built to ensure continuous operation, with many configurations including backup units to prevent downtime caused by primary transformer failures. This redundancy is vital for facilities where auxiliary power loss could disrupt critical processes.

  • Wide Voltage Adaptability: Primary side voltage matches the facility’s main power source (e.g., 10kV grid), while secondary side outputs standard low voltages (380V three-phase for machinery, 220V single-phase for lighting/controls) to align with auxiliary equipment requirements.

  • Compact and Space-Efficient: Compared to main transformers, Aux Transformers have smaller capacities (typically 50kVA–2000kVA) and a compact structure, making them suitable for installation in confined spaces like switchgear rooms or auxiliary power rooms.

  • Enhanced Protection Mechanisms: Equipped with built-in safeguards such as overcurrent protection, short-circuit protection, and temperature monitoring to protect both the transformer and connected auxiliary loads.

  • Durability in Diverse Environments: Designed to withstand industrial conditions, including dust, vibration, and moderate temperature fluctuations. Oil-immersed variants resist moisture, while dry-type models (epoxy-cast) are ideal for indoor, low-maintenance settings.

  • Efficiency for Low-Load Operations: Optimized for partial or varying loads (common in auxiliary systems) with low no-load losses, ensuring energy efficiency even when power demand is not at peak levels.

FAQ
Q: What are the core international and domestic standards governing power transformers up to 345kV, and what are their respective focuses?
A:
Currently, mainstream standards are divided into three categories: international general standards, North American regional standards, and Chinese national standards. The core content and focus differences are as follows:
  • IEC 60076 series: The core international standard for power transformers, comprehensively covering key aspects such as design, testing, insulation requirements, and cooling systems. It serves as an important reference for national standard formulation in various countries.
  • IEEE C57 series (including ANSI C57): The dominant standard in North America, covering similar aspects of design, manufacturing, and testing as IEC 60076. It is tailored to the technical characteristics of North American power grids.
  • GB standards (e.g., GB20052-2013): Chinese national standards, most of which are harmonized with IEC standards. They propose specific requirements for efficiency and operational performance to ensure compatibility with China's power system.
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Company overview
Workplace: 108000m²m² Total staff: 700+ Highest Annual Export(usD): 150000000
Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus/Electric transformer
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

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