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High-Voltage 33kV Dry-Type Voltage Transformer from China Suppliers | Precision Measurement Factory

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The 33kV Dry-Type Voltage Transformer, manufactured in China, is a premier instrument transformer that excels in delivering precise voltage measurement, protection, and monitoring for medium-voltage and high-voltage distribution systems. Utilizing cutting-edge epoxy resin casting technology, this transformer guarantees superior insulation strength, minimal partial discharge, and stable performance over time. As one of the leading suppliers in the industry, our factory ensures that this product is widely used in substations, switchgear, and industrial power networks, making it an essential component for reliable electrical operations.

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    Product Details

    Product Parameter

    Parameter Specification
    Rated Voltage 33kV
    Rated Secondary Voltage 100V / 110V
    Frequency 50Hz
    Accuracy Class 0.2 / 0.5 / 1.0
    Rated Burden 10VA – 300VA
    Insulation Class Class F / Class H
    Cooling Method Natural air cooling
    Partial Discharge ≤5 pC
    Power Frequency Withstand Voltage 70kV (1 min)
    Lightning Impulse Withstand Voltage 170kV
    Installation Type Indoor (panel-mounted)
    Standards IEC 61869 / GB 1207

    Product Applications

    High-Voltage Substations and Grid Measurement Systems
    The 33kV dry-type voltage transformer is widely used in high-voltage substations for accurate voltage measurement and relay protection. It converts 33kV primary voltage into standardized 100V/110V outputs for monitoring systems. With accuracy up to Class 0.2, it ensures precise data acquisition. Its high insulation strength supports reliable operation in critical utility-grade power networks.
    Industrial Power Distribution and Heavy Electrical Loads
    This transformer is ideal for large industrial facilities such as steel plants, cement factories, and petrochemical operations. It provides stable voltage signals for control and protection systems under continuous load conditions. Designed to maintain performance within ±0.5% accuracy deviation, it ensures stable monitoring in environments with fluctuating electrical demand up to 300VA burden capacity.
    Renewable Energy Plants and Infrastructure Projects
    The transformer is widely used in renewable energy systems such as wind farms, solar plants, and large infrastructure projects including railways and ports. It ensures accurate voltage measurement under variable load conditions. With operational reliability in environments from -40°C to +45°C, it supports stable performance in outdoor and remote installations with high electrical demand.

    Product Advantages

    Consistent Power Output
    Consistent Power Output
    Ensures stable and continuous electrical performance for industrial and distribution systems.
    Space-Efficient Structure
    Space-Efficient Structure
    Compact finished design allows easy installation in limited electrical spaces.
    Reliable Manufacturing Standard
    Reliable Manufacturing Standard
    Produced under strict factory control to ensure stable product quality.
    Strong Operational Durability
    Strong Operational Durability
    Designed for long-term use with dependable performance in daily operation.
    Enhanced System Reliability
    Enhanced System Reliability
    Stable structure ensures consistent operation under normal working conditions.
    Multi-Scenario Adaptability
    Multi-Scenario Adaptability
    Suitable for different installation layouts and electrical system configurations.

    Key Benefits

    The 33kV Dry-Type Voltage Transformer is a high-reliability, utility-grade instrument transformer designed for demanding medium- and high-voltage systems. Its advanced insulation technology, strong dielectric performance, and compact structure make it ideal for substations, industrial facilities, and renewable energy applications.

    With long service life, high accuracy, and maintenance-free operation, it provides a dependable solution for modern power measurement and protection systems.

    Key Benefits Image

    FAQ

    Q: What makes a 33kV voltage transformer different from lower voltage models?

    It is designed with higher insulation and dielectric strength to safely handle higher voltage levels in utility systems.

    Q: Can it be used in outdoor installations?

    It is primarily designed for indoor use but can be integrated into outdoor systems when installed in protective enclosures.

    Q: What is the typical accuracy level of this transformer?

    It supports high-precision classes such as 0.2, suitable for metering and protection applications.

    Q: How does it perform under fluctuating loads?

    It maintains stable voltage output and measurement accuracy even under variable electrical load conditions.

    Q: What ensures long-term reliability?

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

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