Zero Sequence Current Transducer

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  • The product is a zero sequence AC current isolation transducer, mainly used to measure the three-phase current phasor or current change of neutral line N (zero line) in three-phase four-wire circuit. Compared with the zero sequence current transformer (CT) detection, there are obvious advantages on signal isolation and stability, standard output signal can be directly connected to the host of the final stage control (such as PLC, etc.). The shell is made of flame-retardant ABS plastic shell. It adopts resin pouring, which effectively avoids the corrosion of transformer in the course of long-term use. Products with characteristics of good  insulating property, good linearity, reliable operation, easy installation and so on. Can widely used in electricity, communication, railways and industrial control fields. In the electrical fire monitoring, fire leakage systems, small current grounding systems and computer equipment protection is also widely used.

    Data Sheet

    * Power supply: DC + 11 ~ + 28V;

    * Maximum current impact adaptability: 1000A / 0.2S, 5 times;

    * Rated operating current: <30mA;

    * Input range: AC Current: 0 ~ 5A; 0 ~ 10A; 0 ~ 15A, optional; 

    * Frequency:  50Hz/60Hz; 

    * Output: 0 ~ 5V / 0 ~ 20mA / 4 ~ 20mA;              

    * Accuracy class: 0.5 (adopts fiducial error);

    * Load capacity: voltage output>1KΩ,current output<300Ω;

    * Temperature drift: ≤200ppm/℃;

    * Isolation voltage: ≥2500 V DC;

    * Response time: ≤200 mS;

    * Rated power consumption: ≤ 0.4W

    * Output ripple: ≤10mV

    * Frequency range: 45~65Hz(up to 5K,please specify when ordering)

    * Surge impact immunity: 

       Power port three-level 2KV (L-N / 2Ω / integrated wave)

       Output port three-level 2KV (L-N / 40Ω / integrated wave) 

    * Impulse immunity: Input / power port ± 4KV 

                                      Analog I /O port ± 4KV

    * Input overload capacity: Continuous overload: 120%, Short-term overload: 1000A / 0.2S, 5 times;

    * Operating temperature: -20~ +70°C; humidity: ≤95% (no dew) 

    * Storage temperature: -55 ~+65°C; humidity: ≤95% (no dew)



                                                                                               Appearance of the product


      Connection diagram ( Note:measure the three-phase motor load of zero sequence current as an example )


                                                                          Overall dimensions ( in mm )

    High accuracy, superior to class 0.5; 

    Wide power supply DC + 11 ~ + 28V;

    Standard signal output, can be directly connected to the PLC equipment;

    High anti-interference ability, surge impact immunity 2KV, pulse immunity 4KV;

    Epoxy resin packaging technology, high degree of electrical isolation;

    Compact structure, easy installation, little space occupation, various shapes for optional;

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