Residual CT Series: Flexible Installation, Superior Balance

Fast Installation

High Accuracy

Full Range

High Precision Residual CT

Suitable for cable circuit environments with a compact structure, small size, and flexible installation. It supports through-hole diameters from 45mm to 100mm and main circuit currents from 63A to 2000A.

 

High magnetic conductivity nickel steel or nanocrystalline core materials provide excellent linearity, high sensitivity, and stable current detection performance.

 

Outstanding balance characteristics and anti-electromagnetic interference capability greatly reduce false alarms and ensure reliable operation of monitoring and protection equipment.

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 CTYD-0990 CTYD-1490 CTYD-1990 CTYD-2490 CTYD-2990 CTYD-3490 CTYD-3990 CTYD-4490 CTYD-4990 CTYD-5490 CTYD-5990 CTYD-6490 CTYD-09140 CTYD-14140 CTYD-19140 CTYD-24140 CTYD-29140 CTYD-34140 CTYD-39140 CTYD-44140 CTYD-49140 CTYD-54140 CTYD-59140 CTYD-64140
Rated Input 0~1A
Rated Output 0~1V (0.5mA)
Accuracy Class 0.1 / 0.2 / 0.5 / 1.0
A 150200250300350400450500550600650700 150200250300350400450500550600650700
B 169169169169169169169169169169169169 219219219219219219219219219219219219
K 90140190240290340390440490540590640 90140190240290340390440490540590640
F 909090909090909090909090 140140140140140140140140140140140140
C 47
D 106156206256306356406456506556606656 106156206256306356406456506556606656
E 55
G M6

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

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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