Current Transformer

Overview

• The RCT Series is designed to convert high AC currents into standard 5A or 1A secondary currents for measurement, monitoring, and protection applications in low-voltage electrical systems.
• Featuring a compact ring-type construction, a flame-retardant insulated housing, and an integrated steel mounting base, the RCT Series enables quick and secure installation on cables or busbars, making it ideal for power distribution and industrial control applications.

Key Features

• Compact & Robust Design
  Compact construction with a flame-retardant insulated housing, providing excellent electrical insulation and mechanical durability.
• High-Quality Magnetic Core
  Enamelled copper windings are evenly wound around a high-permeability magnetic core to minimize core loss and magnetic flux leakage.
• High Accuracy
  Available in Class 1 or Class 0.5 accuracy for reliable current measurement and monitoring.
• Easy Installation
  Integrated steel mounting base allows quick and convenient installation on both cables and busbars.
• Wide Product Range
  Available in various sizes and current ratios to suit diverse application requirements.
• Local Manufacturing
  Manufactured locally with a stable supply chain and flexible delivery.

Applications

• Current measurement with ammeters.
• Energy Management Systems (EMS).
• Building Management Systems (BMS).
• SCADA systems.
• Energy metering applications.
• Reactive power compensation systems.
• Power distribution boards and industrial control panels.
• PLCs and other electrical monitoring devices.

iLEC RCT Ordering Code

General Specifications

Waveform & Phase Diagram

Tài liệu kỹ thuật biến dòng RCT iLEC

• Download Catalogue Biến dòng RCT iLEC

Written by: Huyen

Parent Category: product

Published: 25 May 2026

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Overview

The TPCT Series is a three-phase molded case current transformer designed for simultaneous current measurement and monitoring of all three phases. By integrating three current transformers into a single compact housing, it significantly reduces installation space, simplifies wiring, and improves the overall appearance of electrical panels.

Designed for direct mounting on the line side or load side of Molded Case Circuit Breakers (MCCBs), the TPCT Series enables faster installation while optimizing panel space. It is an ideal solution for power distribution systems, industrial control panels, and energy management applications.

Key Features

• Integrated Three-Phase Design
  Three current transformers integrated into a single compact housing for simplified installation and reduced wiring.
• High-Quality Housing
  Flame-retardant engineering plastic housing with excellent electrical insulation and thermal resistance.
• High Reliability
  Stable performance under demanding industrial operating conditions.
• High Accuracy
  Class 1 accuracy for reliable current measurement and monitoring.
• Easy Installation & Maintenance
  Designed for quick installation, easy inspection, and convenient replacement.
• Local ManufacturingManufactured locally with a stable supply chain and dependable product availability.

Applications

• Used in Energy Management Systems (EMS), Building Management Systems (BMS), and SCADA systems.
• Suitable for installation in power distribution boards, industrial control panels, and electrical monitoring systems.
• Provides current signals for ammeters, multifunction power meters, energy meters, PLCs, and other monitoring devices.

General Specifications

TPCT Ordering Code

Overal Dimensions: TPCT-103

Overal Dimensions: TPCT-203

Overal Dimensions: TPCT-403

TPCT Application Examples

Written by: Huyen

Parent Category: product

Published: 25 May 2026

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Introduction

• The PMCT current transformer is designed to convert high AC currents into standard secondary currents of 5A or 1A for use with measuring instruments and monitoring devices.
• It is widely used in industrial power systems, electrical panels, and substations to provide accurate current measurement, system monitoring, and equipment protection.

Features

• Simple, compact, and robust design, specially engineered for busbar mounting, enabling fast, convenient, and safe installation.
• Insulated ABS plastic housing with flame-retardant properties for enhanced safety and durability.
• Provides current signals for measurement and monitoring applications.
• Designed for high AC current measurement.
• Accurate, durable, and safe operation.
• Stable performance in high-temperature environments.
• Long service life and reliable performance.
• Easy yo install, maintain, and replace.

Applications

• Used in electrical monitoring systems and power substations.
• Suitable for installation in power distribution and control panels for factories and industrial facilities.
• Provides current signals to measuring devices such as ammeters, energy meters, multifunction power meters, power factor controllers, and PLCs.

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Written by: Huyen

Parent Category: product

Published: 25 May 2026

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Introduction

iLEC ZCT (Zero Phase Current Transformer) or Core Balance Current Transformer (CBCT) is a specialized device used to detect leakage current or ground fault current by measuring the vector sum of three-phase currents.

1. Operating principleIn a normal electrical system, the total vector of the three-phase current is equal to 0.\(I_A + I_B + I_C = 0\)When a leakage current or ground fault occurs, an excess current (zero-sequence current) appears . The ZCT will detect this current and send a signal to the protective relay (EFR/ELR) to interrupt the circuit, protecting equipment and people.
2. Structure & ShapeShape: Typically toroidal (round) in design, the system's phase/neutral wire is threaded through the circular hole in the center of the sensor.Characteristics: Unlike conventional CTs, it does not have a fixed current transformation ratio but operates based on the principle of direct magnetic induction of the total current flowing through the center.
3. Main functionsLeakage protection: Prevents the risk of electric shock when people accidentally touch equipment with a faulty electrical connection.Ground fault protection: Detects and disconnects the system in the event of a phase short circuit to the equipment casing, protecting cables and equipment from fire and explosion.
4. Practical applicationsCommonly installed in industrial electrical cabinets and main distribution boards (MSBs), in combination with ground fault and leakage protection relays (such as Mikro, Schneider, Omron relays, etc.).To learn more about the detailed operation or to select the appropriate leakage current range for your system, you can refer to the manufacturer's documentation for the Mikro ZCT zero-sequence current transformer to choose the most accurate measuring devices.

What is a Core Balance Current Transformer

CBCT / ZCT / ZPC working principle

CBCT's Technical parameters

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Written by: Huyen

Parent Category: product

Published: 25 May 2026

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