How Does a Current Transformer Work?

A current transformer (CT) works based on the principle of electromagnetic induction. When alternating current flows through the primary conductor, it creates a magnetic field inside the CT core. This magnetic field induces a proportional current in the secondary winding, producing a smaller output current that can be safely measured by electrical meters and monitoring systems.

For example, a 400A/5A CT converts a 400A primary current into a 5A secondary signal while maintaining electrical isolation between the power circuit and measurement equipment.

Quick Answers

What is the working principle of a current transformer?

A CT works by using electromagnetic induction to transfer a proportional current from the primary conductor to the secondary winding through a magnetic core.

Does a CT reduce voltage?

No.

A current transformer primarily reduces current. It also provides electrical isolation between high-current circuits and measurement equipment.

Why does a CT secondary produce lower current?

The secondary winding has more turns than the primary conductor, allowing the current to be reduced proportionally according to the CT ratio.

Can a CT work without a core?

Traditional CTs require a magnetic core. However, Rogowski coils use an air-core design and operate differently.

Introduction

Electrical systems today operate with increasingly higher currents.

Industrial facilities, data centers, renewable energy systems, and commercial buildings may carry hundreds or thousands of amperes through their electrical distribution networks.

Directly connecting measurement instruments to these circuits creates several challenges:

• Safety risks
• Equipment limitations
• High installation costs
• Difficult maintenance

Current transformers solve this problem by creating a safe measurement interface between high-current electrical systems and monitoring devices.

But how exactly does a current transformer work?

The answer lies in one of the fundamental principles of electrical engineering:

Electromagnetic induction.

Understanding CT operation helps engineers select the correct product, improve measurement accuracy, and design reliable energy monitoring systems.

Chapter 1 — The Basic Principle of Current Transformer Operation

A current transformer operates using the same fundamental principle as a transformer:

Electromagnetic Induction

When an alternating current passes through a conductor, it generates a changing magnetic field.

If another conductor is placed within this magnetic field, a voltage and current can be induced.

A CT uses this principle to transfer current information from a high-current circuit to a measurement circuit.

Basic CT Structure

A typical current transformer contains:

        Primary Circuit

              ↓

        ┌─────────┐
        │ Magnetic│
        │  Core   │
        └─────────┘

              ↑

       Secondary Winding

              ↓

     Energy Meter / Relay

Main components:

1. Magnetic core
2. Primary conductor
3. Secondary winding
4. Insulation system
5. Output terminals

Chapter 2 — Primary Side and Secondary Side Explained

A CT has two electrical sides:

Primary Side

The primary side is connected to the electrical circuit being measured.

It carries the actual load current.

Examples:

• 100A
• 400A
• 1000A

The primary may be:

• A conductor passing through the CT window
• A busbar
• A built-in winding

Secondary Side

The secondary side connects to measurement equipment.

Typical outputs:

• 5A
• 1A
• mA

Examples:

• Energy meters
• Power meters
• Protection relays
• Power quality analyzers

Chapter 3 — Step-by-Step CT Working Process

Let’s examine the complete measurement process.

Step 1 — Current Flows Through Primary Conductor

Assume an industrial feeder carries:

500A AC current

This current flows through the CT primary.

Step 2 — Magnetic Field Is Generated

The AC current creates a changing magnetic field around the conductor.

The magnetic core concentrates this magnetic flux.

Step 3 — Magnetic Flux Passes Through Core

The magnetic core provides a low-resistance path for magnetic flux.

This improves:

• Coupling efficiency
• Measurement accuracy
• Signal stability

Step 4 — Secondary Current Is Induced

The changing magnetic field generates current in the secondary winding.

The output is proportional to the primary current.

Example:

CT ratio:

500A/5A

Primary:

500A

Secondary:

5A

Step 5 — Measurement Device Calculates Actual Current

The connected meter receives the secondary signal.

Using the CT ratio, the system calculates:

• Actual current
• Power
• Energy consumption
• Demand

Chapter 4 — Understanding CT Transformation Ratio

The CT ratio defines the relationship between primary and secondary current.

Formula:

CT Ratio = Primary Current ÷ Secondary Current

Example:

A CT rated:

600A / 5A

means:

When primary current = 600A

Secondary output = 5A

If the actual primary current is:

300A

The secondary current becomes:

2.5A

Why CT Ratio Is Important

The connected meter must be configured with the correct CT ratio.

Incorrect settings cause:

• Wrong energy readings
• Incorrect demand calculation
• Poor energy analysis

Chapter 5 — Why Does a CT Provide Electrical Isolation?

One of the most important advantages of CTs is isolation.

Without CT

A meter directly connected to a 1000A circuit would require:

• Large terminals
• Heavy wiring
• Complex protection

With CT

The meter only receives:

• 5A
• 1A
• mA signal

Advantages:

✔ Safer operation
✔ Smaller equipment
✔ Easier maintenance
✔ Lower installation cost

Chapter 6 — Why Must CT Secondary Never Be Open-Circuited?

This is one of the most important safety rules for CT operation.

Never Open the CT Secondary While Primary Current Is Flowing

When the secondary circuit is open:

• Secondary current becomes zero
• Magnetic flux increases dramatically
• Dangerous high voltage may appear

Possible consequences:

• Insulation damage
• Equipment failure
• Safety hazards

Correct Practice

Before disconnecting:

✔ Short the CT secondary terminals
✔ Remove the measurement device
✔ Follow manufacturer procedures

Chapter 7 — CT Construction and Internal Design

The performance of a CT depends heavily on its construction.

1. Magnetic Core

The core determines:

• Accuracy
• Saturation performance
• Frequency response

Common materials:

• Silicon steel
• Ferrite
• Nanocrystalline materials

2. Primary Conductor

The primary design affects:

• Current capacity
• Thermal performance
• Installation method

3. Secondary Winding

The secondary winding determines:

• Output accuracy
• Ratio performance
• Phase error

4. Insulation System

Insulation protects:

• Operators
• Measurement devices
• Electrical systems

Chapter 8 — Split Core CT Working Principle

Split core CTs operate using the same electromagnetic principle as traditional CTs.

The difference is the mechanical design.

Traditional Solid Core CT

Installation requires:

• Disconnecting conductor
• Removing busbar connection
• Shutting down system

Split Core CT

The magnetic core can open.

Installation:

Open CT

↓

Place Around Cable

↓

Close Core

↓

Connect Meter

Advantages:

• No shutdown required
• Fast installation
• Ideal for retrofit monitoring

Applications:

• Existing buildings
• Factories
• Data centers
• Energy-saving projects

Chapter 9 — CT Output Signal and Energy Monitoring

A CT itself does not measure energy.

It provides current information.

A complete monitoring system requires:

Electrical Load

↓

Current Transformer

↓

Energy Meter

↓

Communication Interface

↓

EMS Platform

The energy meter combines:

• Voltage measurement
• CT current input

to calculate:

• Active power
• Reactive power
• Energy consumption
• Power factor

Chapter 10 — CT Working Principle in Modern Smart Energy Systems

Traditional CT applications focused on measurement.

Modern applications focus on intelligent energy management.

Today CTs support:

Energy Monitoring

Real-time consumption analysis.

Power Quality Analysis

Monitoring:

• Current imbalance
• Harmonics
• Abnormal loads

Predictive Maintenance

Detecting:

• Overloading
• Equipment degradation
• Electrical abnormalities

Carbon Management

Providing accurate energy data for:

• ESG reporting
• Carbon accounting
• Energy optimization

Chapter 11 — Common CT Working Problems

Problem 1 — Incorrect Polarity

Symptoms:

• Negative power readings
• Incorrect energy direction

Solution:

Check:

• P1/P2
• S1/S2 polarity

Problem 2 — Wrong CT Ratio Setting

Symptoms:

• Incorrect current display
• Wrong energy calculation

Solution:

Match:

Meter setting = CT rating

Problem 3 — CT Saturation

Causes:

• Excessive current
• Incorrect CT selection

Effects:

• Measurement errors

Problem 4 — Excessive Burden

Causes:

• Long cable distance
• High resistance connections

Effects:

• Accuracy reduction

Chapter 12 — Practical Example: CT + Energy Meter System

Example application:

Industrial factory monitoring

Requirements:

• Monitor 400A feeder
• Track energy consumption
• Connect to EMS

Solution:

400A Electrical Feeder

↓

400A/5A Split Core CT

↓

Smart Energy Meter

↓

RS485 Modbus RTU

↓

EMS Dashboard

Result:

• Real-time monitoring
• Energy analysis
• Cost optimization
• Remote management

Chapter 13 — Understanding Current Transformer Accuracy

Accuracy is one of the most important characteristics of a CT.

A current transformer does not produce a perfectly proportional output.

There are always small differences between:

• Actual primary current
• Measured secondary current

These differences are called CT errors.

Two Main CT Errors

A CT has two major accuracy errors:

1. Ratio Error

Ratio error is the difference between the actual transformation ratio and the rated CT ratio.

Example:

Rated CT:

400A / 5A

Ideal secondary current:

5A

Actual output:

4.98A

The difference creates measurement error.

2. Phase Displacement Error

Because the CT has magnetic losses and impedance, the secondary current is slightly shifted in phase compared with the primary current.

This affects:

• Power factor measurement
• Active power calculation
• Energy measurement accuracy

Why CT Accuracy Matters

A small CT error may appear insignificant, but in large facilities it can create substantial measurement deviations.

Example:

Industrial facility:

Annual electricity consumption:

10 million kWh

A 1% measurement error could represent:

100,000 kWh difference

Therefore, high-quality CTs are critical for:

• Energy management
• Cost allocation
• Carbon reporting
• Efficiency improvement

Chapter 14 — CT Accuracy Class Explained in Engineering Applications

CT accuracy classes define the maximum permitted measurement error.

Common classes include:

• Class 0.2
• Class 0.5
• Class 0.5S
• Class 1.0

Class 0.2 CT

Accuracy:

±0.2%

Applications:

• Precision measurement
• Laboratory testing
• High-accuracy revenue metering

Advantages:

• Excellent ratio accuracy
• Low phase error

Class 0.5 CT

Accuracy:

±0.5%

Applications:

Most common industrial energy monitoring applications:

• Smart energy meters
• Factory EMS
• Building energy monitoring

This is the typical choice for industrial monitoring.

Class 0.5S CT

The “S” means a special accuracy class.

Compared with Class 0.5:

Advantages:

• Better low-current accuracy
• Improved phase performance
• More stable measurement range

Applications:

• Commercial billing
• High-precision sub-metering
• Utility applications

Class 1.0 CT

Accuracy:

±1%

Applications:

• Basic monitoring
• Load indication
• General measurement

Accuracy Class Selection Guide

Chapter 15 — CT Saturation Explained

CT saturation is one of the most important concepts in current transformer engineering.

What Is CT Saturation?

A CT core can only handle a limited amount of magnetic flux.

When the magnetic core reaches its maximum capability:

The core becomes saturated.

At this point:

• Secondary current no longer increases proportionally
• Measurement accuracy decreases
• Output waveform becomes distorted

Normal CT Operation

Under normal conditions:

Primary Current ↑

↓

Magnetic Flux ↑

↓

Secondary Current Proportional ↑

↓

Accurate Measurement

Saturation Condition

During excessive current:

Primary Current ↑↑↑

↓

Magnetic Core Saturation

↓

Secondary Output Distortion

↓

Measurement Error

Causes of CT Saturation

1. Excessive Primary Current

Example:

CT rating:

400A

Actual fault current:

5000A

The core may saturate.

2. Incorrect CT Selection

A CT with insufficient capability may saturate during abnormal conditions.

3. Excessive Burden

High secondary load increases magnetic requirements.

Why Saturation Matters

For measurement CTs:

Saturation causes:

• Incorrect energy readings
• Wrong power calculation

For protection CTs:

Saturation may cause:

• Protection delay
• Incorrect relay operation

Chapter 16 — CT Burden Explained

Burden is another critical CT parameter.

What Is CT Burden?

CT burden is the maximum load connected to the secondary circuit while maintaining specified accuracy.

It is measured in:

VA (Volt-Amperes)

Example:

CT specification:

400A/5A

Class 0.5

10VA

means:

The CT maintains Class 0.5 accuracy when the secondary load is within 10VA.

Components of CT Burden

The total burden includes:

1. Meter Input Resistance

Example:

Energy meter input impedance.

2. Cable Resistance

Long secondary cables create additional burden.

3. Connection Resistance

Includes:

• Terminals
• Connectors
• Switches

Burden Calculation Example

A CT secondary circuit has:

Cable resistance:

0.2Ω

Meter resistance:

0.1Ω

Total resistance:

0.3Ω

Secondary current:

5A

Burden:

I²R

= 5² × 0.3

= 7.5VA

Therefore:

A CT rated 10VA is suitable.

Chapter 17 — CT Excitation Curve and Magnetic Performance

The excitation curve describes the relationship between:

• Secondary voltage
• Excitation current

It shows how the CT behaves under increasing magnetic conditions.

Normal Region

At low magnetic flux:

• Linear relationship
• Accurate measurement

Knee Point

The knee point is where:

A small voltage increase causes a large increase in excitation current.

Beyond this point:

• Core approaches saturation
• Accuracy decreases

Why Engineers Care About Knee Point

Important for:

• Protection CT design
• Fault current measurement
• Relay applications

Chapter 18 — How CT Affects Energy Meter Accuracy

An energy meter calculates power based on:

Voltage × Current × Power Factor

The current value comes from the CT.

Therefore:

CT accuracy directly affects:

• Power calculation
• Energy calculation
• Demand measurement

Complete Measurement Chain

Electrical Load

↓

Current Transformer

↓

Energy Meter

↓

Communication System

↓

EMS Platform

Every component affects final accuracy.

Example

Assume:

Energy meter accuracy:

±0.5%

CT accuracy:

±1.0%

The total system accuracy will be worse than the meter accuracy alone.

Therefore:

High-quality meters require suitable CTs.

Chapter 19 — CT Installation Best Practices

Correct installation is essential for achieving rated performance.

1. Correct CT Direction

CT polarity must be correct.

Typical markings:

Primary:

• P1
• P2

Secondary:

• S1
• S2

Incorrect polarity causes:

• Negative power
• Wrong energy direction

2. Correct Secondary Wiring

Recommendations:

• Use appropriate cable size
• Keep cable length reasonable
• Ensure tight connections

3. Avoid Open Circuit Operation

Never disconnect CT secondary while primary current exists.

Correct procedure:

1. Short secondary terminals
2. Disconnect meter
3. Perform maintenance

4. Match CT Installation Position

Correct installation:

• Around the measured conductor
• Proper orientation
• Secure mechanical mounting

Chapter 20 — Engineering Example: Selecting CT for Industrial Monitoring

Project Requirement

A factory wants to monitor:

Main feeder current:

350A

System:

400V three-phase

Monitoring:

EMS energy analysis

Step 1 — Select CT Ratio

Recommended:

400A/5A

Reason:

Normal operation:

70–85% loading

Good measurement range.

Step 2 — Select Accuracy

Requirement:

Energy monitoring

Choose:

Class 0.5

Step 3 — Select Installation Type

Existing operating factory:

No shutdown allowed

Choose:

Split Core CT

Step 4 — Integration

Solution:

400A Feeder

↓

400A/5A Split Core CT

↓

Energy Meter

↓

RS485 Modbus RTU

↓

EMS

Chapter 21 — Common Engineering Questions

Can one CT connect to multiple meters?

Normally no.

A CT secondary should be designed for a specific burden and measurement circuit.

Why does CT secondary need shorting?

Because an open secondary can generate dangerous voltage.

Does CT accuracy change with load?

Yes.

Accuracy varies depending on:

• Current level
• Burden
• Frequency
• Temperature

Are split core CTs less accurate than solid core CTs?

Not necessarily.

High-quality split core CTs can achieve industrial measurement accuracy.

Chapter 22 — Key Engineering Takeaways

For reliable CT applications:

Always consider:

✔ CT ratio
✔ Accuracy class
✔ Burden
✔ Installation method
✔ Application purpose

Remember:

• CT accuracy determines measurement quality.
• CT saturation affects performance during abnormal conditions.
• Burden influences accuracy and reliability.
• Correct installation is essential.
• CT selection must match the complete measurement system.

Chapter 23 — Current Transformer Applications in Modern Energy Systems

Current transformers are widely used wherever electrical current measurement is required.

The major application areas include:

• Industrial manufacturing
• Renewable energy
• EV charging infrastructure
• Data centers
• Smart buildings
• Power distribution systems

1. Current Transformer for Industrial Energy Monitoring

Industrial facilities consume large amounts of electricity through:

• Motors
• Compressors
• Pumps
• Production lines
• Heating systems

Without detailed monitoring, companies cannot identify:

• Energy waste
• Equipment inefficiency
• Abnormal loads

CT Application Architecture

Industrial Feeder

↓

Current Transformer

↓

Energy Meter

↓

RS485 Modbus RTU

↓

EMS Platform

↓

Energy Analysis

Benefits

CT-based industrial monitoring enables:

Energy Optimization

Identify high-consumption equipment.

Production Cost Analysis

Allocate electricity costs by:

• Workshop
• Production line
• Machine group

Predictive Maintenance

Detect:

• Overcurrent
• Load imbalance
• Abnormal operating conditions

2. Current Transformer for Solar PV Systems

Solar photovoltaic systems require accurate current measurement for energy generation monitoring.

CTs are commonly installed on:

• AC inverter output
• Grid connection points
• Distribution cabinets

Solar PV Monitoring Architecture

PV Array

↓

Solar Inverter

↓

AC Distribution Panel

↓

Current Transformer

↓

Energy Meter

↓

Monitoring Platform

CT Benefits in Solar Applications

Generation Monitoring

Track:

• Daily production
• Monthly yield
• System efficiency

Grid Interaction Analysis

Measure:

• Import energy
• Export energy
• Power flow direction

Fault Detection

Identify:

• Inverter problems
• Abnormal current
• System degradation

3. Current Transformer for EV Charging Stations

The rapid expansion of EV charging infrastructure creates new requirements for current measurement.

CTs support:

• Charger monitoring
• Load management
• Energy billing
• Power allocation

EV Charging Application

Power Grid

↓

Distribution Panel

↓

Current Transformer

↓

Energy Meter

↓

Charging Management System

Benefits

Dynamic Load Balancing

Prevent:

• Transformer overload
• Peak demand problems

Accurate Billing

Provide accurate:

• kWh measurement
• Charging records

Fleet Energy Management

Monitor:

• Multiple chargers
• Charging schedules
• Energy consumption trends

4. Current Transformer for Data Centers

Data centers require extremely reliable power monitoring.

Modern facilities monitor:

• UPS output
• PDU feeders
• Rack distribution
• Cooling systems

Data Center Monitoring Architecture

Utility Power

↓

UPS System

↓

PDU

↓

Current Transformer

↓

Power Meter

↓

DCIM / EMS Platform

Benefits

CT monitoring helps data centers achieve:

Higher Reliability

Detect:

• Overloading
• Current imbalance
• Abnormal consumption

Better Capacity Planning

Analyze:

• Available power capacity
• Future expansion capability

Energy Efficiency

Optimize:

• PUE performance
• Cooling efficiency
• Load distribution

5. Current Transformer for Smart Buildings

Smart buildings use CTs for:

• Tenant sub-metering
• HVAC monitoring
• Lighting monitoring
• Building energy analytics

Typical Applications

Commercial buildings:

• Office towers
• Shopping centers
• Hospitals
• Universities

Benefits

CT-based monitoring enables:

• Energy transparency
• Cost allocation
• Energy-saving management

Chapter 24 — Current Transformer vs Hall Effect Sensor

Engineers often need to decide between CTs and Hall sensors.

Both provide electrical isolation, but they serve different applications.

Current Transformer (CT)

Working Principle

Electromagnetic induction.

Advantages

✔ High AC measurement accuracy
✔ Passive operation
✔ No external power supply
✔ Mature technology
✔ Lower cost

Best Applications

• AC distribution
• Energy meters
• Industrial monitoring
• Building EMS

Hall Effect Current Sensor

Working Principle

Measures magnetic field generated by current.

Advantages

✔ Measures AC and DC
✔ Compact design
✔ Fast response
✔ Suitable for power electronics

Best Applications

• Battery systems
• EV chargers
• Solar storage
• DC systems

CT vs Hall Sensor Comparison

Chapter 25 — Current Transformer vs Rogowski Coil

Rogowski coils are another current measurement technology.

Rogowski Coil

A flexible air-core sensor used for measuring high-speed changing currents.

Advantages

✔ Flexible installation
✔ Very large current range
✔ No magnetic saturation
✔ Lightweight

Limitations

• Requires signal processing
• Lower accuracy for some metering applications
• More complex electronics

Comparison Table

Chapter 26 — International Standards for Current Transformers

Professional CT products must comply with international standards.

The most important standard is:

IEC 61869 Series

IEC 61869-1

General requirements for instrument transformers.

Covers:

• Safety
• Environmental conditions
• General performance

IEC 61869-2

Specific requirements for current transformers.

Defines:

• Accuracy
• Testing methods
• Performance requirements

Other Related Standards

Why Certification Matters

Certified CT products provide:

• Reliable measurement
• International acceptance
• Easier project approval
• Improved system reliability

Especially important for:

• EPC projects
• Data centers
• Renewable energy systems
• Industrial automation

Chapter 27 — YADA Current Transformer Solutions

YADA provides current transformer products designed for intelligent energy monitoring applications.

The product portfolio supports:

• Energy meters
• EMS systems
• Industrial monitoring
• Renewable energy
• Smart buildings

1. SCT24L Split Core Current Transformer

Positioning

Compact retrofit CT solution.

Typical Applications

• Smart energy meters
• Building energy monitoring
• Existing distribution panels

Key Advantages

Easy Installation

No power shutdown required.

Compact Design

Suitable for limited cabinet space.

Accurate Measurement

Supports industrial energy monitoring requirements.

2. SCT40L Split Core Current Transformer

Positioning

Higher-current industrial monitoring solution.

Applications

• Industrial feeders
• Large distribution panels
• Energy management projects

Advantages

✔ High current capability
✔ Reliable performance
✔ Retrofit-friendly installation

3. CTF Series Current Transformer

Designed for:

• Industrial measurement
• Electrical distribution
• Power monitoring systems

Applications

• Switchgear
• Control cabinets
• Energy monitoring equipment

4. ZCT Residual Current Transformer

Designed for:

• Leakage detection
• Ground fault monitoring
• Electrical safety applications

Chapter 28 — Complete YADA CT + Energy Monitoring Solution

Modern energy monitoring requires more than a CT.

A complete solution includes:

Electrical System

↓

YADA Current Transformer

↓

Smart Energy Meter

↓

RS485 Modbus Communication

↓

EMS / BMS / SCADA

↓

Energy Analytics Platform

Solution Benefits

Real-Time Monitoring

Monitor:

• Current
• Voltage
• Power
• Energy

Intelligent Analysis

Analyze:

• Load profile
• Energy consumption
• Abnormal conditions

Remote Management

Support:

• Centralized monitoring
• Data reporting
• Energy optimization

Chapter 29 — Frequently Asked Questions

1. How does a current transformer work?

A CT uses electromagnetic induction to convert high AC current into a smaller proportional current signal for measurement.

2. Why are current transformers used?

Because they allow safe measurement of high-current electrical systems while providing electrical isolation.

3. Can CT measure DC current?

Traditional CTs cannot measure DC current.

DC applications require:

• Hall sensors
• DC current transducers

4. What is CT ratio?

CT ratio defines the relationship between primary current and secondary output.

Example:

400A/5A.

5. What happens if CT secondary is open?

Dangerous high voltage may appear.

Never open a CT secondary circuit while energized.

6. What CT accuracy should I choose?

Typical selection:

• Class 0.5 → Industrial energy monitoring
• Class 0.5S → Precision metering
• Class 1.0 → General monitoring

7. Are split core CTs suitable for retrofit?

Yes.

They are specifically designed for existing electrical systems.

8. Can CTs be used with smart meters?

Yes.

Most industrial smart meters use CT inputs.

9. What industries use current transformers?

Common applications:

• Manufacturing
• Solar PV
• EV charging
• Data centers
• Commercial buildings

10. What is the difference between CT and sensor?

CTs are mainly AC measurement devices, while sensors may include technologies for AC and DC measurement.

Technical Glossary

Current Transformer (CT)

An instrument transformer used to measure AC current safely.

Primary Current

The current flowing through the measured electrical circuit.

Secondary Current

The reduced current output generated by the CT.

CT Ratio

The ratio between primary and secondary current.

Accuracy Class

The maximum allowable measurement error.

Burden

The allowable secondary circuit load.

Saturation

A condition where the magnetic core can no longer maintain proportional current transformation.

Key Takeaways

• A current transformer works through electromagnetic induction to safely measure high electrical currents.
• CT performance depends on:
  • Ratio
  • Accuracy class
  • Burden
  • Core design
  • Installation method
• CTs are essential components in:
  • Industrial energy monitoring
  • Solar PV systems
  • EV charging infrastructure
  • Data centers
  • Smart buildings
• Split core CTs provide an ideal solution for retrofit projects.
• Selecting a reliable CT manufacturer ensures accurate measurement and long-term system reliability.
• YADA CT solutions integrate seamlessly with energy meters and EMS platforms to support intelligent energy management.

Need a Reliable Current Transformer for Your Energy Monitoring System?

YADA provides industrial current transformer solutions for:

✔ Smart energy meters
✔ EMS and BMS systems
✔ Industrial power monitoring
✔ Solar PV monitoring
✔ EV charging infrastructure
✔ Data center power management

Available solutions:

• Split Core CT
• Precision Current Transformer
• Residual Current Transformer
• Customized OEM CT Solutions

Contact YADA engineering team for CT selection support and customized energy monitoring solutions.