Zhejiang Donghua Electrical Appliance Co., Ltd.
Leave Your Message
Products Categories
Featured Products

Zero Sequence Current Transformer LXK‑Ø120 for Residual Current Detection

LXK-Ø120 ( 80 、 100 、 120 、 140 、 150 、 180 、 185 、 250 ) series zero sequence current transformers are suitable for cable grounding protection in low resistance current systems with rated frequency of 50Hz or 60Hz and rated voltage of 10kV and below. 
The product implementation standards are GB20840.1-2010 and GB20840.2-2014.

    Model and its meaning

    LXK-120.jpg

    Summarize

    This series of zero-sequence current transformers utilizes a split-type design, combined with an epoxy resin casting structure, for excellent mechanical strength and durability. This unique split-type design allows the transformer to be easily split into two halves during installation, facilitating operation in confined or complex spaces. This design not only increases installation flexibility but also significantly simplifies the installation process, saving time and labor costs.

    After installation, the transformer's two halves can be joined together using a clamping clamp to ensure a secure connection and prevent loosening due to vibration or other external factors. This structural design not only improves the safety and reliability of the equipment, but also ensures that the transformer maintains good performance during long-term use.

    Normal service condition

    Installation place: indoor.

    Ambient temperature: maximum temperature 40℃; Minimum temperature -5℃; The average daily temperature does not exceed 30℃.

    Atmospheric conditions: During installation and operation, the atmosphere must be free of significant contamination. This means the equipment should be used away from environments with high levels of dust, fumes, chemical corrosion, and other pollutants to ensure proper operation and extend its service life. Good atmospheric conditions help maintain stable transformer performance, reduce the likelihood of failure, and thus improve overall system safety and reliability.

    Technical parameter

    Relay model

    Relay coil
    connection method

    Relay scale value

    Azero-sequence
    current value(A)

    DD-11/60
    DD-1/60

    series

    15x1

    24~45

    30x1

    parallel connection

    15x2

    3~5

    30x2

    series

    15x1

    3~5

    30x1

    parallel connection

    15x2

    3~6

    30x2

    Structure and characteristics

    The epoxy resin casting material properties ensure that this zero-sequence current transformer offers excellent resistance to moisture, dust, and corrosion, making it suitable for use in a wide range of environmental conditions. Whether in industrial sites or power facilities, this transformer provides stable measurement and monitoring capabilities, ensuring the safe operation of power systems. In short, this series of zero-sequence current transformers, with their convenient installation and superior performance, has become an indispensable component in power systems.

    LXK-120.jpg

    Type

    A

    B

    C

    H

    d

    D

    h

    L-080

    110

    95

    57

    195

    80

    165

    110

    LK-0100

    110

    95

    57

    210

    100

    180

    120

    LK-0120

    110

    95

    57

    235

    120

    204

    135

    LXK-0150

    150

    107

    57

    265

    155

    235

    150

    LXK-0180

    220

    110

    57

    300

    180

    265

    170

    LXK-0200

    220

    130

    80

    365

    200

    330

    195