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Compact High-Accuracy 11kV Dry-Type Voltage Transformer for Medium-Voltage .jpg

High-Insulation Precision 20kV Class Dry-Type Voltage Transformer for Advanced Medium-Voltage Monitoring

The 20kV Class Dry-Type Voltage Transformer is a high-performance instrument transformer designed for accurate voltage measurement and protection in medium-voltage systems. Featuring advanced epoxy resin casting technology, it offers excellent insulation strength, low partial discharge, and long-term operational stability. It is ideal for switchgear, substations, and industrial electrical systems requiring precise voltage monitoring.

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    product details

    Product Parameter

    Parameter

    Specification
    Rated Voltage 20kV
    Rated Secondary Voltage 100V / 110V
    Frequency 50Hz
    Accuracy Class 0.2 / 0.5 / 1.0
    Rated Burden 10VA – 200VA
    Insulation Class Class F / Class H
    Cooling Method Natural air cooling
    Partial Discharge ≤5 pC
    Power Frequency Withstand Voltage 50kV (1 min)
    Lightning Impulse Withstand Voltage 125kV
    Installation Type Indoor (panel-mounted)
    Standards IEC 61869 / GB 1207

    Product Applications

    Medium-Voltage Switchgear and Smart Distribution Panels
    The 20kV dry-type voltage transformer is widely used in medium-voltage switchgear and intelligent distribution panels for precise voltage measurement and protection. With accuracy up to Class 0.2, it provides reliable voltage data for digital monitoring systems. Its compact epoxy-cast structure supports easy installation and enhances system safety in modern smart grid environments.
    Power Substations and Grid Protection Systems
    In substations, this transformer converts 20kV primary voltage into standard 100V/110V outputs for relay protection and monitoring devices. With partial discharge controlled below 5 pC, it ensures high insulation reliability and stable long-term operation. It plays a critical role in maintaining voltage stability and protecting medium-voltage networks from faults and fluctuations.
    Industrial Automation and High-Load Electrical Systems
    The transformer is extensively used in industrial plants such as manufacturing facilities, energy systems, and process industries. It provides accurate voltage signals for control and automation systems, maintaining performance within ±0.5% accuracy deviation. Designed for continuous operation, it ensures system reliability and minimizes downtime in high-demand industrial applications.

    Product Advantages

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    Dependable Power Performance
    Ensures stable and reliable transformer operation in industrial power systems. 
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    Compact Integrated Structure
    Finished transformer design provides strong durability and stable operating performance. 
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    Reliable Manufacturing Process
    Factory-standardized production ensures consistent quality and operational reliability. 
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    Long-Term Operational Stability
    Designed for stable performance during continuous industrial operation. 
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    Maintenance-Friendly Design
    Reliable structure helps reduce operational maintenance requirements. 
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    Flexible Operating Configuration
    Supports different industrial operating requirements with multiple specification options.

    Key Benefits

    The 20kV Class Dry-Type Voltage Transformer is a reliable, accurate, and high-performance instrument transformer for medium-voltage systems. Its advanced insulation, compact design, and stable operation make it ideal for switchgear, substations, and industrial automation environments.

    With long service life, minimal maintenance, and strong safety performance, it provides a dependable choice for modern voltage monitoring and protection applications.

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    FAQ

    1. What makes a 20kV voltage transformer different from lower voltage models?

    It offers higher insulation strength and dielectric performance to safely handle increased voltage levels.

    2. Can this transformer be used in digital substations?

    Yes, it is compatible with modern monitoring systems and supports precise voltage data for digital grid applications.

    3. What ensures its long-term reliability?

    Epoxy resin insulation, low partial discharge, and high-quality materials contribute to stable long-term performance.

    4. Is it suitable for high-precision measurement systems?

    Yes, accuracy classes up to 0.2 make it suitable for precise metering and monitoring applications.

    5. What installation environments are recommended?

    It is designed for indoor installation in switchgear, control panels, and substations.

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