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    Current Transformer, 300/5A, 600/5A, 1000/5A to 1500/5A

    Small current transformere rate ratio range is 300/5A, 500/5A, 800/5A, to 1500/5A, rated frequency 50Hz ac circuit as the electric current energy measurement and relay protection. Secondary burden select from 1, 0.5, 0.5S, 0.2, or 0.2S.
    SKU: ATO-LMK1-0.66-60
    Delivery date: 6-12 days

    50Hz current transformer Secondary load can select 1, 0.5, 0.5S, 0.2, or 0.2S, current ratio 300:5A, 600:5A, 800:5A to 1500:5A, low cost and free shipping.


    Product Name Current Transfer
    Model Number LMK1-0.66-60
    Weight 1 kg
    Current ratio (A) VA Secondary load/ Burden (VA) Cross-core turn number
    1 0.5 0.5S 0.2 0.2S
    300/5 5 5 5 5 5 1
    400/5 5 5 5 5 5 1
    500/5 5 5 5 5 5 1
    600/5 5 5 5 5 5 1
    750/5 10 10 10 10 10 1
    800/5 10 10 10 10 10 1
    1000/5 10 10 10 10 10 1
    1200/5 10 10 10 10 10 1
    1500/5 10 10 10 10 10 1
    Rated Frequency 50 Hz
    Rated Test Voltage 3kV AC (1min)
    Rated short-time thermal current (ith) 60 in
    Rated dynamic current (idyn) 2.5 lth
    Rated voltage (Um) 0.72 kV AC
    Continuous overload (ld) 1.2 in
    Operating temperature -10℃~50℃
    Housing self-extinguishing class VO
    Safety factor FS 5
    Secondary current 5A/ 1A
    Installation sites Indoor
    Ambient humidity ≦80%
    Altitude ≦1000m
    Atmospheric conditions No serious impurity in the atmosphere

    Current Transformer Dimension

    Current Transformer

    Tips: Current Transformer Working Principle

    Working principle of the current transformer is based on the electromagnetic induction principle, circuit current often flows through its primary winding. When the current transformer works, its secondary circuit keeps closed, therefore, the impedance of series coil of measuring instrument and protection circuit are very small, the working state is close to the short circuit.

    Current transformer consists of closed iron core and winding. It has few primary winding that are connected in series in the current circuit under measurement; however, it has many secondary winding, which are connected in series in the measuring instrument and protection circuits. The current transformer plays the role of converter and electrical isolation, it’s a sensor for measuring instrument, relay protection and other secondary equipment to obtain current information of primary circuit in power system. It converts the high current to a low current by ratio, its primary end is connected with the primary system, while the secondary end is connected with the measuring instrument and relay protection.

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