Electronic Components Supplier | Transformers, Inductors, Inverters
High-voltage Current Transformer

New 1250KVA Three-Phase Dry-Type Epoxy Resin Low-Voltage High-Current Transformer Input 10KV Output 440V and 380V

10kv Inside Double Cable High Voltage Outdoor 600/5 2000/5 Oil-filled Erected Current Transformer

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High Voltage Current Transformer Best for 300A/500A/700/5A Multiple Output Voltages & Frequencies Single Three Phases

Custom Factory SG-60KVA 50kva High Current Voltage Step up Transformers 220v to 380v Three Phase Dry Type Transformer

High Voltage Indoor Industrial Current Transformer Cast Resin Potential Voltage Transformer 35KV Voltage Transformers

High Voltage Two Phase Instrument Transformer Outdoor Combined Voltage Current Transformer

High-voltage Transformer Power 12.5VA Input 220V Frequency 60Hz Output Voltage 2500V Output Current 5mA

Push Pull 12v 20a Single Phase High Voltage Low Frequency Power Current Flyback transformers

Heavy Duty Sealed Current Transformer for Outdoor Industrial Power Equipment and Distribution Network Protection High Voltage

High-Voltage 33KV Current Transformer 110V/220V Three-Phase Power Usage Input Combination for Efficient for Transformers
Overview of High-Voltage Current Transformer


High-voltage current transformers (CTs) are essential instrument transformers used in electrical power systems to measure and monitor high currents safely. They convert high current levels in transmission lines into proportional low current signals that can be used by meters, protection relays, and monitoring equipment.
These transformers are widely used in power plants, electrical substations, and high-voltage transmission networks, ensuring accurate current measurement and reliable protection of power system equipment.
How High-Voltage Current Transformers Work



High-voltage current transformers operate based on electromagnetic induction, converting large primary currents into smaller, standardized secondary currents.
| Component | Function |
|---|---|
| Primary Conductor | Carries the high current from the power system |
| Magnetic Core | Transfers magnetic flux efficiently |
| Secondary Winding | Produces reduced current for measurement |
| Insulation System | Ensures safe operation in high voltage environments |
| Protective Housing | Protects internal components |
The typical secondary current output is 1A or 5A, which can be safely measured by monitoring devices.
Types of High-Voltage Current Transformers



- Oil-Immersed Current Transformer – Used in outdoor high-voltage substations.
- Cast Resin Current Transformer – Suitable for indoor switchgear systems.
- Ring Type Current Transformer – Installed around conductors for measurement.
- Outdoor Instrument Transformer – Designed for high-voltage transmission networks.
Advantages of High-Voltage Current Transformers
- Accurate Current Measurement for power system monitoring
- Improved Protection for electrical equipment and circuits
- High Insulation Strength for high-voltage applications
- Reliable Operation in substations and transmission systems
- Compact and Durable Design
Company Profile
Luoyang Datang Energy Technology Co., Ltd. is a high-tech enterprise integrating R&D, manufacturing, and supply of power equipment and renewable energy solutions. Specializing in transformers, new energy components, distribution cabinets, and inverters, we have expanded our portfolio to include solar power systems, energy storage solutions, and air source heat pumps. With technological innovation as our core, we focus on creating high-reliability and high-performance power and energy efficiency solutions to serve global customers. Through a strict quality control system and international standard certification, we continuously deliver excellent products that empower our customers to build safe, stable, and sustainable power systems.
If you want a high-quality, high-voltage current transformer supplier, we invite you to contact us or inquire about related products.
Payment Methods for High-Voltage Current Transformer
L/C, T/T, Western Union, Paypal, Credit Card etc.
Shipping of High-Voltage Current Transformer
Once payment is received, by sea, air, or express as soon as possible.
FAQs of High-Voltage Current Transformer
1. What is a current transformer (CT)?
A current transformer is an instrument transformer used to measure high electrical currents safely.
2. Where are high-voltage CTs used?
They are commonly used in substations, power plants, and electrical transmission systems.
3. What is the standard secondary current of a CT?
Most current transformers provide a 1A or 5A secondary current output.
4. Why are CTs important in power systems?
They enable accurate measurement and protection of high-voltage electrical networks.
5. Can CTs be used for protection relays?
Yes, current transformers are widely used in protection and metering systems.

