Zhejiang Donghua Electrical Appliance Co., Ltd.
Leave Your Message
Products Categories
Featured Products
GN27‑40.5 Indoor High Voltage Disconnector | 40.5kV Rotary Multi‑contact Disconnector

GN27‑40.5 Indoor High Voltage Disconnector | 40.5kV Rotary Multi‑contact Disconnector
GN30‑12 Indoor Rotary High Voltage Disconnector | 12kV Rotary‑blade Disconnector

GN30‑12 Indoor Rotary High Voltage Disconnector | 12kV Rotary‑blade Disconnector
GNF38‑12‑630A Indoor High Voltage Disconnector | 12kV Three‑Position Disconnector

GNF38‑12‑630A Indoor High Voltage Disconnector | 12kV Three‑Position Disconnector
JN15‑12/31.5 Indoor High‑Voltage Earthing Switch

JN15‑12/31.5 Indoor High‑Voltage Earthing Switch
JN22‑40.5‑31.5 Indoor High‑Voltage Earthing Switch

JN22‑40.5‑31.5 Indoor High‑Voltage Earthing Switch
VEF(R)-12 Draw‑out Type Indoor Vacuum Load Switch (Fuse‑Combination Unit)

VEF(R)-12 Draw‑out Type Indoor Vacuum Load Switch (Fuse‑Combination Unit)
VYF-12GD Three-position Combined Vacuum Circuit Breaker | 12kV Indoor Vacuum Circuit Breaker with Disconnector & Earthing Switch

VYF-12GD Three-position Combined Vacuum Circuit Breaker | 12kV Indoor Vacuum Circuit Breaker with Disconnector & Earthing Switch
VZG5 Indoor High-Voltage Vacuum Circuit Breaker | 12kV 24kV 40.5kV VCB

VZG5 Indoor High-Voltage Vacuum Circuit Breaker | 12kV 24kV 40.5kV VCB
ZN23-40.5-1600-25 Indoor High-Voltage AC Vacuum Circuit Breaker

ZN23-40.5-1600-25 Indoor High-Voltage AC Vacuum Circuit Breaker
ZN28‑12 Indoor High‑Voltage AC Vacuum Circuit Breaker

ZN28‑12 Indoor High‑Voltage AC Vacuum Circuit Breaker
0102030405
LSY-3-10-127.jpg

LSY‑3‑10/127 10kV Three‑Phase Combined Zero‑Sequence CT for Medium Voltage Switchgear

In the power system field, accurate measurement and monitoring of current is crucial for ensuring operational efficiency and safety. The three-phase integrated current transformer is a high-performance measurement device designed specifically to meet these needs. This innovative product integrates multiple functions into one, making it an essential tool for electrical engineering professionals.

    Preview Data Contact us
    Outline and Installation Dimension Drawing
    Dimensional Drawing

    Model and its meaning

    LSY-3-10-127.jpg

    Summarize

    The LSY-3-10/127 features a three-phase integrated design, combining current measurement, protection, and switching functions into a compact device. This integration simplifies installation and wiring, significantly improving the overall reliability of the power system. By reducing the number of required components, the LSY-3-10/127 minimizes potential points of failure, thereby enhancing system robustness and lifespan.

    One of the most notable features of the LSY-3-10/127 is its high-precision measurement capability. This transformer is designed to accurately convert large current signals into easily manageable small current signals, thereby ensuring measurement accuracy in power systems. This accuracy is crucial for a wide range of applications, including power monitoring, protection, and control, as even minute deviations can lead to serious operational problems. Therefore, the LSY-3-10/127 is ideal for professionals seeking reliable and accurate current measurement in power systems.

    Durability is another key feature of the LSY-3-10/127. This three-phase integrated current transformer is manufactured using high-quality materials, exhibiting excellent corrosion resistance and high-temperature performance. These characteristics enable it to operate stably in harsh environmental conditions, making it suitable for a wide range of applications. Whether deployed in industrial or outdoor environments, the LSY-3-10/127 can withstand demanding operating conditions.

    The versatility of the LSY-3-10/127 is also reflected in its compatibility with 50Hz and 60Hz power systems. This adaptability allows the transformer to meet the standards of different countries and regions, making it a globally applicable solution. As power systems continue to evolve, the ability to adapt to different frequency standards is crucial for ensuring seamless integration and functionality across a wide range of applications.

    Technical parameter

    Rated frequency: 50Hz or 60Hz

    Rated secondary current: 5A or 1A

    Rated short-term thermal current: 40kA,2 seconds

    Rated continuous thermal current: 1200%In

    Power factor of load: COC < P=0.8 (lag)

    Instrument security factor (measurement) : FS < 10

    Accurate limit system (protection) : 10P10,10P15,10P20

    Model

    Purpose

    Measure the
    current transformer

    Protect the
    current transformer

    Double-winding
    current transformer

    Stabilize
    the primary
    current

    Accuracy level and
    rated load（VA）

    Accuracy level and
    rated load（VA）

    Accuracy level and
    rated load（VA）

    0.2s

    0.2

    0.5

    10P5

    10P10

    10P15

    0.5

    1

    10P10

    10P5

    LSY-127

    75

    –

    –

    1

    –

    –

    –

    –

    1

    –

    –

    100

    –

    –

    2.5

    –

    –

    –

    –

    1

    –

    –

    150

    –

    –

    2.5

    2.5

    –

    –

    –

    1.5

    –

    –

    200

    –

    2.5

    2.5

    5

    –

    –

    –

    2.5

    –

    5

    300

    2.5

    2.5

    5

    5

    –

    –

    –

    2.5

    –

    5

    400

    5

    5

    5

    7.5

    –

    –

    –

    5

    –

    7.5

    500

    5

    5

    10

    10

    –

    –

    –

    5

    –

    10

    600

    5

    10

    10

    10

    –

    –

    –

    5

    –

    10

    800

    10

    10

    10

    10

    –

    –

    –

    5

    –

    10

    LSY-3-10-127.jpg