Why are Ring Current Transformer so important in switchgear design?

For switchgear manufacturers in Africa, current transformers are not just components, but crucial elements:

• Energy measurement accuracy
• Protecting system reliability
• Distribution box load control.
• Integration of generator and solar energy.

In many African markets, switchgear must operate under the following conditions:

• Unstable power supply
• high ambient temperature
• Hybrid system (grid + generator + solar energy)
• Therefore, choosing a reliable and adaptable CT scanner is crucial.
• Why are toroidal current transformers the preferred choice for switchgear applications?

Ring current transformers are widely used in:

• Low-voltage switchgear
• Junction box
• MCC panel
• generator control cabinet

Key advantages of switchgear manufacturers:

• Compact design → Saves space in electrical panels
• Easy installation → Reduced assembly time
• High compatibility → Suitable for cables or buses
• Maintenance-free design

Excerpt from the RCT series product catalog:

• Various sizes (from RCT-25 to RCT-110)
• Various internal diameters provide greater installation flexibility.
• Stable operation and high precision.
• This flexibility is particularly important for projects that require switchgear to be developed to meet specific customer needs.
• Typical application examples in switchgear projects in Africa
• Distribution panel

use:

• Energy measurement
• Load distribution
• Surveillance system

Benefits for young researchers:

• Compatible with standard electricity meters (5A/1A).
• Assessing the stability of the invoicing system
• generator switching equipment
• This situation is very common in Africa due to the instability of the power grid.

Application areas:

diesel generator panel

ATS system

Hybrid system

Why do randomized controlled trials produce good results?

• Withstands load fluctuations
• Easy installation inside the generator housing.
• Reliable operation over a long period of time.
• Solar + hybrid system

Modern switchgear typically includes:

• solar inverter
• battery system
• connection to the power grid

Benefits for young researchers:

• Compact design, suitable for placing cabinets in limited space conditions.
• Accurate energy management monitoring
• Suitable for SCADA/monitoring systems.
• How to choose the right current transformer for switching devices
• This is a particularly important aspect for engineers.

Step 1: Select CT report.

Example:

Bus current = 630 A.
Choice: 600/5 A or 800/5 A.

Ruler:

Current transformer main current ≥ actual current

Avoid sizes that are too small.

 

Step 2: Check the inner diameter

This is of critical importance for the design of switching equipment:

Must be suitable for cables or buses.

Permissible installation distance

The RCT range includes various sizes → easily adaptable

 

Step 3: Select the accuracy level.

Class 1.0 → General Observation

Level 0.5 → Energy Measurement

 

Step 4: Installation Type

mounting plate

tire installation

The cable runs through the middle.

Installation instructions (very important for control cabinet manufacturers)

During the installation process, engineers often encounter problems.

The correct method:

The conductor passes through the center of the current transformer.

Follow the direction of polarity.

Install the CT scanner inside the control panel.

Common mistakes:

computer protection switch

The passenger door is not closed (dangerous).

Incorrect installation caused vibrations.

The RCT design allows for simple and quick installation inside the switchgear.

Why are RCT series products competitive with other switchgear manufacturers?

1.CE certification (project requirement)

Many EPC projects and switchgear manufacturing projects in Africa require:

CE Certificate

Exported documents

We help you win government contracts and major projects.

 

2.Wide range of sizes (ideal for individual panels)

Distribution devices must always be adapted individually.

Your strengths:

Several internal diameters

Flexible energy efficiency indicators

Suitable for various cabinet models.

 

3.Competitive advantage in cost (critical in Africa)

Switchgear manufacturers must remain competitive.

Your location:

Higher quality than local suppliers.

Much cheaper than European brands.

 

4.Reliability even in the most difficult conditions.

African Environment:

high temperature

Dust

voltage fluctuations

Your scanner allows you to verify the following:

Stable work

Long service life

low bounce rate

 

Compay：HEYI Electrical Co., Ltd.
Brand: HEYI/ASCT
Contact: Bethy
E-mail: heyi@heyiele.com             
Tel: 86-13968747975

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