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YADA YDBH0.66-III Series Split Core Class 0.2S, 0.5S, 0.2, 0.5,1.0 Current Transformer – CE Certified 100A-7500A to 5(1)A for Energy Monitoring & Metering
YADA YDBH0.66-III Series Split Core Class 0.2S, 0.5S, 0.2, 0.5,1.0 Current Transformer – CE Certified 100A-7500A to 5(1)A for Energy Monitoring & Metering - Image 2
YADA YDBH0.66-III Series Split Core Class 0.2S, 0.5S, 0.2, 0.5,1.0 Current Transformer – CE Certified 100A-7500A to 5(1)A for Energy Monitoring & Metering - Image 3
YADA YDBH0.66-III Series Split Core Class 0.2S, 0.5S, 0.2, 0.5,1.0 Current Transformer – CE Certified 100A-7500A to 5(1)A for Energy Monitoring & Metering - Image 4

YADA YDBH0.66-III Series Split Core Class 0.2S, 0.5S, 0.2, 0.5,1.0 Current Transformer – CE Certified 100A-7500A to 5(1)A for Energy Monitoring & Metering

  • The primary current is 100A~7500A,while the secondary current is 5A or 1A. The products line covers accuracy of 0.2S, 0.5S, 0.2, 0.5, and 1.0.
  • The core undergoes high-vacuum heat treatment, ensuring excellent performance and stable accuracy.；
  • The housing is made of high-impact, flame-retardant PC material, offering good safety and an attractive appearance；
  • Features a flip-type transparent terminal cover for convenient wiring；
  • Easy to install with clamp plate fixation；
  • The performance meets the standard of CE (EN 61010-1:2010+A1:2019)
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Product Description

The YADA YDBH0.66-III Series Split-Core Current Transformer is a precision instrument transformer designed for industrial energy monitoring, meter-grade current measurement and retrofit installations. With its split-core design, it enables quick installation without disconnecting the conductor, making it ideal for power distribution panels, switchgear upgrade projects, metering cabinets and smart-grid systems.

Key Attributes Specifications
Model Number YDBH0.66-III-B Series
Brand Name YADA
Frequency 50 Hz
Input Voltage 0.66KV
Winding Material Copper
Coil Number Multi-Winding Coil
Coil Structure Wound Coil
Phase Single
Material Copper
Shape Rectangle
Type Instrument Transformer, Distribution Transformer
Application Current
Certificate CE (EN 61010-1:2010+A1:2019)
Operating Temperature -40℃ ~ +120℃
Input Current 100A to 7500A
Output Current 5A or 1A
Relative Humidity 10% ~ 95%
Altitude ≤4000m
Insulation Withstand Voltage AC 3.0kV/min (secondary to ground)
Accuracy Class 0.2S, 0.5S, 0.2, 0.5, and 1.0

Model Specification
Rated Input Current
Rated Output Current
Dimensions (mm)
W*L*H
YDBH0.66-30Ⅱ-B
100A~600A
5A / 1A
62*101*45
YDBH0.66-40Ⅱ-B
150A~1200A
78*106*41
YDBH0.66-50Ⅱ-B
150A~1500A
87*116*45
YDBH0.66-60Ⅱ-B
300A~2500A
102*128*45
YDBH0.66-60×50Ⅱ-B
300A~2500A
102*145*45
YDBH0.66-80Ⅱ-B
400A~3000A
117*122*45
YDBH0.66-80×50Ⅱ-B
400A~3000A
120*144*45
YDBH0.66-100Ⅱ-B
500A~4000A
145*128*45
YDBH0.66-100×50Ⅱ-B
500A~4000A
145*158*50
YDBH0.66-100×80Ⅱ-B
600A~4000A
152*193*55
YDBH0.66-120Ⅱ-B
800A~5000A
174*171*48
YDBH0.66-120×70Ⅱ-B
1000A~5000A
160*196*60
YDBH0.66-130Ⅱ-B
1000A~5000A
176*163*50
YDBH0.66-150Ⅱ-B
1000A~6000A
210*179*55
YDBH0.66-180Ⅱ-B
1500A~6300A
239*184*60
YDBH0.66-220Ⅱ-B
1500A~6300A
280*193*60
YDBH0.66-260Ⅱ-B
1500A~6300A
320*194*60
YDBH0.66-260×70Ⅱ-B
2000A~7500A
308*221*63

Certifications

  • CE Certification: Meets Standard of EN 61010-1:2010+A1:2019, Certificates No.: TASH-250918444-V3

  • Complies with international safety standards for current transformers

Key Features

  • Split-Core Convenience – Clamp-on installation simplifies field upgrades and maintenance without system shutdown.

  • Wide Primary Range – Available ratios from 100A to 7500A  (depending on variant) to match diverse load conditions.

  • Metering-Grade Accuracy – Designed to meet accuracy classes such as 0.5, 1.0 for reliable billing and monitoring.

  • High-Quality Construction – Resin-sealed core, flame-retardant housing and robust mechanical structure to suit industrial environments.

  • CE Certified & Export-Ready – Ensures compliance with European safety and measurement directives, trusted globally.

  • Low Loss & Minimal Burden – Minimizes disturbance to the measured circuit and ensures accurate output for energy management systems.

Applications

  • Energy management systems (EMS) for commercial & industrial sites

  • Smart grid current monitoring and load-profiling

  • Metering retrofit in existing switchgear and panelboards

  • Renewable systems (solar, wind, battery storage) requiring precise current sensing

  • Electrical panel upgrades, fault-detection and power quality monitoring

Installation & Best Practices

  1. Ensure power conductor is isolated or safe to access.

  2. Insert the conductor through the CT split core, ensuring full closure and firm fastening.

  3. Connect secondary terminals to meter or monitoring instrument, respecting polarity.

  4. Never leave the secondary open-circuited while the primary is energized — always load or short the secondary.

  5. Use shielded wiring and ensure proper grounding in electrically noisy environments.

  6. After installation, perform calibration or verification against a known reference to ensure accuracy.

Why Choose YADA YDBH0.66-III?
With decades of experience in power instrumentation design, YADA provides export-ready, high-accuracy sensors tailored for system integrators, panel builders and energy service providers. The YDBH0-66-III Series offers easy installation, wide adaptability, and the precision required for today’s industrial energy monitoring and billing systems.

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