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FZ transformer manufacturer .jpg

China FZ Series Current Transformer - Reliable Power Monitoring Solutions from Top Suppliers and Factory

A current transformer (CT) is a crucial electrical device designed for controlling, monitoring, and protecting power systems. In China, suppliers and factories produce high-quality current transformers that efficiently reduce large alternating currents (AC) into small, measurable quantities. These transformers are essential in various applications, including power generation, transmission, distribution, and industrial settings. By linking high-current power circuits with safety relays or sensitive measuring devices, our current transformers ensure the reliability and safety of power systems across the industry
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    Product Details

    Product Overview

    A Current Transformer (CT) uses electromagnetic induction and contains two windings: a primary winding with a few turns connected in series to the high-current circuit, and a secondary winding with numerous turns connected to safety or measurement devices.

    ⚙️ Transformation Ratio

    The primary winding receives a large current, while the secondary winding is typically tuned to 5A or 1A for industrial applications. This proportionality enables precise monitoring.

    🛡️ Safety & Protection

    CTs protect personnel and equipment from potentially harmful voltages by isolating measurement tools from high-voltage primary circuits.

    📈 Performance Keys

    CTs require high linearity to reduce measurement error, high precision for energy metering, and robust insulation between windings.

    ⚠️

    CRITICAL SAFETY NOTE: Never leave the secondary winding open circuit when using a CT. Extremely high voltages produced by an open circuit can damage electrical equipment and pose severe safety risks.

    Lastly, current transformers are essential to guaranteeing the dependability, effectiveness, and safety of contemporary electrical systems since they allow for more accurate current monitoring and enhanced problem identification.

    Technical Parameters

    Type Main Loop Current (mm) Outline Size
    A B C D E F G H M
    FZ-1025 <100A 175 75 37 36 100 25 150 18 c4*10
    FZ-1435 < 250A 216 87 37 36 140 35 .5 18 c4*10
    FZ-1835 < 400A 256 87 37 36 180 35 .5 18 c4*10
    FZ-2245 <630A 62311 100 37 36 220 45 286 18 c4*10
    Rated Primary Current: IA Second Current: 0.5mA

    Frequently Asked Questions

    What is the main function of a Current Transformer (CT)?
    A CT transforms high-magnitude primary currents into lower, standardized secondary currents (usually 1A or 5A), allowing safe measurement and monitoring of electrical systems.
    Why is the transformation ratio important?
    The transformation ratio ensures that the current delivered to measurement devices is proportional to the actual current in the high-power circuit, enabling accurate data without direct exposure to high currents.
    What are the dangers of an open-circuit secondary winding?
    An open secondary winding can generate extremely high induced voltages. This can lead to insulation breakdown, equipment failure, and significant danger to personnel working on the system.
    How do CTs improve system reliability?
    By providing precise current data, CTs allow for enhanced problem identification, more accurate energy metering, and the efficient operation of protective relays.
    What does linearity mean in terms of CT performance?
    Linearity refers to the CT's ability to maintain a consistent transformation ratio across its operating range, which is crucial for reducing measurement errors and ensuring data integrity.