Residual CT Series: Flexible Installation, Superior Balance

Fast Installation

High Accuracy

Full Range

High Precision Residual CT

The circular through-core structure is specifically designed for cable circuit applications, offering simple construction, small size, and flexible installation. It supports multiple aperture sizes from 25mm to 200mm, adapting to different cable specifications in main circuits ranging from 63A to 2000A.

The product is available in multiple accuracy classes including 0.2, 0.5, and 1, meeting diverse measurement requirements. It also complies with strict national standards for balance performance, ensuring stable and reliable operation under complex electrical environments.

With optimized unbalanced current output performance reaching 30mA, 10mA, 5mA, and even 3mA, it significantly reduces false alarms caused by interference from current and magnetic fields, providing strong assurance for system safety and reliability. The product fully complies with GB 14287.2-2005 and GB 14287.2-2014 standards.

Application scenarios

Motor Control

Industrial motor control system

Power Distribution

High and low voltage distribution cabinet & power distribution room

Renewable Integration

PV & wind power new energy grid connection

Energy Monitoring

Building & park energy consumption metering management

Automation Control

Inverter and automatic industrial control equipment

Grid Protection

Substation and power relay protection

Technical Overview and Performance Data

Maximum Withstand Voltage
0.66kV
Rated Primary Current
0A ~ 300kA
Rated Secondary Output
With integrator:
4V / 1A (AC) or 4–20mA (DC)
Without integrator:
100mV/kA, 50mV/kV
Accuracy
1%

10%-100% Accuracy
5% (without integrator) 1% (with integrator, 45-65HZ)

Phase error
W+1°(45-65HZ) W+10°(20KHZ)
Auxiliary Power Supply
±12V, 24V, 5V DC or 220V AC
Power Consumption
≤10W
Operating Frequency
1Hz – 1MHz
Note: Other specifications can be customized according to customer requirements.
 
Performance Index
10%-100% Accuracy
5% (without integrator) 1% (with integrator, 45-65HZ)
Phase error
W±1° (45-65HZ) W±10°(20KHZ)
10%-100% Linearity
0.50%
Integrator power supply
7-30VDC
Response bandwidth
1HZ-1MHZ
Coil section diameter
W7.5、W10、W12mm or Custom made
Coil length
W2M or Custom made
Use altitude
W2000M
Protection level
IP65
Texture of material
Silicon rubber
Secondary lead
Shielded wire,length customized
Compressive strength
2KVAC/min
Insulation resistance
DC500V/100MQ
Electrical Parameters
Working frequency50~400Hz
Rated input10mA~5A
Measuring range10%In~130%In
Rated output0-1V or 0-0.5mA
Ratio difference≤+0.1%
Phase difference≤+10 points
Dielectric strength2.5KV/1mA/1min
Insulation resistanceDC500V/1000MΩ /min
Mechanical Parameters
ShellABS, Flame retardant grade 94-V0
SkeletonPBT
Iron coreNickel or nanocrystalline
Intermal structureEnvironment friendly epoxy resin casting
Construction planScrew fixation
Working temperature-12°C~+45°C
Ambient humidity≤85%
Connection modeTerminal type / shielded strand 1.5m

Note:  Other specifications can be customized according to the specific requirements of customers.

Outline and Installation Dimensions

Model and Specification Rated Input (A) Rated Output Accuracy Class Dimensions (mm)
Φ A B C D G
Y-25 0~1A 0~1V
(0.5mA)
0.1
0.2
0.5
1.0
25mm 56 60 21 48.5 M5
Y-45 45mm 79.5 83.5 24 66.5 M5
Y-65 65mm 99.5 104 24 86.5 M5
Y-80 80mm 113.5 119 26 101.5 M5
Y-100 100mm 135.5 141 26 114.5 M6
Y-150 150mm 189.5 196 27 171 M6
Y-200 200mm 239.5 246 30 221 M8

Certificates & Accreditation

We proudly showcase our enterprise honors and management system certifications, reflecting our commitment to quality, reliability, and industry excellence. These certificates demonstrate our dedication to maintaining high standards in all aspects of our operations.

           

Equipment Image Information

Explore detailed images of our equipment, showcasing the advanced technology, precision engineering, and robust build quality that support our high-performance operations. Each image is accompanied by informative descriptions to provide a comprehensive understanding of our machinery.

Fully automated sensor core continuous tunnel heat treatment furnace production line

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8 fully automatic high-speed & 14 continuous precision stamping presses

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24 Fully Automatic Magnetic Core Winding Machines

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6 Fully Automated Sensor Core Continuous Tunnel Heat Treatment Furnace Production Lines

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6 Fully Automatic Testing & Sorting Machines

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2 Solenoid (Tripper) Manufacturing Lines

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6 Fully Automatic Magnetic Core Packaging Machines

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260 Fully Automatic Winding Machines

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8 fully automatic current transformer potting machines

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2 Current Transformer Assembly Lines

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Winding Production Line Workshop 2

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6 Fully Automatic Magnetic Core Testing Machines

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Large Magnetic Core Continuous Furnace

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Strip Slitting & Cutting Production Line

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5 Fully Automatic Ultra-Microcrystalline Heat Treatment Lines

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Technology Dept / R&D Center / Material Testing

Discover our Technology Department, R&D Center, and Material Testing facilities through detailed images. These showcase our commitment to innovation, rigorous research, and precise material analysis, ensuring the highest quality and reliability in every product we develop.

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About Us

Jiangyi Yucheng Electric, Jiangsu, China, makes current sensors and smart meters for global power and industrial applications, offering reliable, high-accuracy, standards-compliant solutions.

Contact Info

No.5 Tongxin Road, Qingyang Town,Jiangsu,China