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    Current Transformer, 600/5A, 1000/5A, 2000/5A to 3000/5A

    5 out of 5 based on 1 reviews | Write a review
    High accuracy current transformer rated frequency can choose 50 Hz or 60Hz, current ratio can be 600/5A, 1000/5A, 1500/5A to 3000/5A, accuracy classes can select 1, 0.5, 0.5S, 0.2 or 0.2S. Direct sales from manufacturer and free shipping.
    SKU: ATO-CT-100II
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Low cost current transformer accuracy classes 0.5S or 0.2s, rated ratio 600:5A, 800:5A, 2000:5A or 3000:5A. Current transformer is one of important devices for power system and used to transform the voltage or current.

    Note: The installation method of current transformer can be fixed by busbar and fixed by the bottom plate, suitable for installation in any direction. The primary conductor can be busbar or cable.


    Model ATO-CT-100I
    Weight 1kg
    Current Ratio (A) VA Secondary load/ Burden (VA) Cross-core Turn Number
    0.2 0.5S 0.2S
    1000/5 / 5 5 1
    1200-2000/5 / 15 10 1
    2500-2000/5 / 20 20 1
    3000/5 / 20 20 1
    4000/5A / 20 20 1
    Rated Frequency 50/60Hz
    Rated Test Voltage 3kV AC (1min)
    Rated Short-Time Thermal Current (ith) 60 in
    Rated Dynamic Current (idyn) 2.5 lth
    Rated Voltage (Um) 0.66 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
    Bus Specification (mm)/Number 1

    Dimension (unit: mm)

    Current transformer dimension 1500 5a

    Model Dimensions Perforation size Installation size
    W H D a e φ M N
    ATO-CT-30I 62 78 45 32 11 22 40 57.5
    ATO-CT-3030I 85 102 50 32 11 28 / 57.5
    ATO-CT-40I 75 95 45 42 11 31 40 57.5
    ATO-CT-60I 102 130 45 61.5 21 45 42 57.5
    ATO-CT-60II 102 125 45 31 33 / 42 57.5
    ATO-CT-80I 118 140 45 82 11 52 60 57.5
    ATO-CT-100II 145 125 45 103 35 / 80 57.5

    Tips: The Principle of Current Transformer Connection

    Wire connection of current transformer shall follow a series principle: namely the primary winding should be connected in series with the circuit under test, while the secondary winding should be connected in series with all instruments and loads.

    Choose the right change according to the magnitude of measured current, otherwise the error will increase. Meanwhile, one end of the secondary side must be grounded, so as to avoid personnel and equipment accidents caused by high voltage at the primary side when the insulation is damaged.

    The secondary side is not allowed for open circuit. Once it's open circuited, current I1 at the primary side would fully turn to magnetizing current, φm and E2 would increase sharply. As a result, the iron core would occur supersaturation magnetization, heat seriously and even burn out coils. Meanwhile, supersaturation magnetization of the magnetic circuit would increase errors. Under normal operation, secondary side of the current transformer is nearly short circuited, if it's broken suddenly, the excitation electromotive force increases sharply, the magnetic flow in the iron core shows seriously saturated flat waves. As a result, the secondary side winding would induce high spike waves when the magnetic flow passes through zero, it can be thousands or even tens of thousands of volts, thus endangering the personnel safety and insulation performance of instruments.

    Existing reviews of Current Transformer, 600/5A, 1000/5A, 2000/5A to 3000/5A
    What are the units on the accuracy of your current transformer?
    What are the units on the accuracy of your current transformer?  Amps?  % of rated amps?
    From: Bourgeois | Date: 06/11/2019
    Was this review helpful? Yes No (1/0)
    ATO Responded
    The CT has accuracy levels of classes 1, classes 0.5 and classes 0.2. For example: classes 0.5, means that the measurement error is within ±0.5% of the standard test data.
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