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China F Series Current Transformer - Reliable Suppliers & Factory Options for Power System Protection

For effective monitoring, management, and safeguarding of power systems, a current transformer (CT) is an indispensable electrical component. This device efficiently converts high alternating currents (AC) into lower, measurable values. As one of the leading suppliers in China, we provide high-quality current transformers ideal for bridging high-current power circuits with sensitive measurement devices or protective relays. Our products are widely utilized in power generation, transmission, distribution, and various industrial applications. Trust our factory to deliver reliable and precise current transformers to enhance your power system's efficiency and safety
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    Product Details

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    Product Overview

    A primary winding (few turns, connected in series with the high-current circuit) and a secondary winding (many turns, coupled to safety or measurement devices) make up a CT, which operates by electromagnetic induction. The secondary winding, which is usually standardized to 5A or 1A for the majority of industrial applications, receives a proportionally low current while the primary winding receives a big current. This proportionality, also known as the transformation ratio, guarantees precise current measurement without subjecting workers or equipment to potentially hazardous voltages.

    High accuracy (required for energy metering), robust linearity (to prevent measurement distortion), and insulation strength (to maintain high voltage between windings) are crucial features of CTs.

    ⚠️ Crucial Safety Warning: A CT's secondary winding should never be open-circuited while in use. This is because an open circuit could produce dangerously high voltages that could damage equipment.

    In conclusion, current transformers are essential to preserving the dependability, effectiveness, and safety of contemporary electrical systems since they offer accurate current monitoring and efficient fault protection.

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    Technical Parameters

    Type Main Loop Current (mm) Outline Size
    F-1025 - 156 54 19 - 100 25
    F-1435 < 250A 204 71 - 188 140 35
    F-1835 - 246 71 - 230 180 35
    F-2245 < 630A 282 84 - 266 220 45
    F-2645 < 800A 327 86 24 311 260 45
    F-3045 - 366 86 24 351 300 45
    F -3445 <2000A 426 86 24 410 340 45
    F-4045 <2500A 486 86 24 470 400 45
    F-4545 - 517 86 24 502 450 45
    Rated Primary Current: IA Rated Second Current: 0.5mA
    ❓ Frequently Asked Questions
    1. What is the primary function of a Current Transformer (CT)?
    A CT reduces high primary currents to a proportionally lower, standardized secondary current (typically 5A or 1A) to allow for safe measurement and monitoring of electrical systems.
    2. Why is the transformation ratio important?
    The transformation ratio ensures that the current measured at the secondary winding accurately reflects the actual current in the primary circuit, allowing for precise monitoring without exposure to high voltages.
    3. What are the essential features of a high-quality CT?
    Crucial features include high accuracy for energy metering, robust linearity to prevent measurement distortion, and strong insulation to maintain safety between windings.
    4. Why must the secondary winding never be open-circuited?
    An open circuit in the secondary winding during operation can generate dangerously high voltages, which can lead to equipment failure and pose significant safety risks to personnel.
    5. What is the rated secondary current for the F-series models?
    As per the technical specifications provided, the F-series current transformers feature a rated secondary current of 0.5mA.
    6. How do CTs contribute to electrical system safety?
    They provide accurate current monitoring and efficient fault protection, which are essential for maintaining the dependability and effectiveness of modern electrical systems.