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0102030405

China LXK-Ø120 Series Zero Sequence Current Transformers - Reliable Suppliers & Factory for Cable Grounding Protection

Introducing the LXK-Ø120 series zero sequence current transformers, available in models ranging from 80 to 250. These high-performance transformers are specifically designed for cable grounding protection in low resistance current systems, operating at a rated frequency of 50Hz or 60Hz and a rated voltage of 10kV and below. Manufactured in China, our transformers adhere to strict industry standards, including GB20840.1-2010 and GB20840.2-201As a reliable supplier and factory, we ensure high-quality products that meet the needs of modern electrical systems. Choose our zero sequence current transformers for dependable performance and safety in your applications

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Product Detail

Model and its meaning

Summarize

This series of zero-sequence current transformers utilizes a split-type design, combined with an epoxy resin casting structure, for excellent mechanical strength and durability. This unique split-type design allows the transformer to be easily split into two halves during installation, facilitating operation in confined or complex spaces. This design not only increases installation flexibility but also significantly simplifies the installation process, saving time and labor costs.

After installation, the transformer's two halves can be joined together using a clamping clamp to ensure a secure connection and prevent loosening due to vibration or other external factors. This structural design not only improves the safety and reliability of the equipment, but also ensures that the transformer maintains good performance during long-term use.

Normal Service Condition

🏭 Installation Place: Indoor

🌡️ Ambient Temperature: Maximum 40°C | Minimum -5°C | Average daily temperature does not exceed 30°C

🌬️ Atmospheric Conditions: During installation and operation, the atmosphere must be free of significant contamination. The equipment should be used away from environments with high levels of dust, fumes, chemical corrosion, and other pollutants to ensure proper operation and extend its service life. Good atmospheric conditions help maintain stable transformer performance, reduce the likelihood of failure, and thus improve overall system safety and reliability.

Technical Parameter

Relay Model	Relay Coil Connection Method	Relay Scale Value	Zero-Sequence Current Value (A)
DD-11/60 DD-1/60	Series	15x1	24~45
		30x1
	Parallel Connection	15x2	3~5
		30x2
	Series	15x1	3~5
		30x1
	Parallel Connection	15x2	3~6
		30x2

Structure and Characteristics

The epoxy resin casting material properties ensure that this zero-sequence current transformer offers excellent resistance to moisture, dust, and corrosion, making it suitable for use in a wide range of environmental conditions. Whether in industrial sites or power facilities, this transformer provides stable measurement and monitoring capabilities, ensuring the safe operation of power systems. In short, this series of zero-sequence current transformers, with their convenient installation and superior performance, has become an indispensable component in power systems.

Frequently Asked Questions

Q What is the main advantage of the split-type design of this zero-sequence current transformer?

The split-type design allows the transformer to be easily divided into two halves during installation, making it ideal for confined or complex spaces. It significantly increases installation flexibility, simplifies the installation process, and reduces both time and labor costs.

Q How are the two halves of the transformer secured after installation?

After installation, the two halves of the transformer are joined and secured using a clamping clamp. This ensures a firm, reliable connection that prevents loosening caused by vibration or other external factors, thereby improving the safety and reliability of the equipment.

Q What are the recommended ambient temperature conditions for this transformer?

The transformer is designed for indoor use with an ambient temperature range of -5°C (minimum) to 40°C (maximum). The average daily temperature should not exceed 30°C to ensure stable and reliable performance.

Q What atmospheric conditions are required for proper operation of this transformer?

The transformer should be installed and operated in an environment free from significant contamination, including high levels of dust, fumes, chemical corrosion, and other pollutants. Clean atmospheric conditions help maintain stable performance, reduce the risk of failure, and extend the service life of the equipment.

Q Why is epoxy resin casting used in the construction of this transformer?

Epoxy resin casting provides excellent resistance to moisture, dust, and corrosion. This material ensures the transformer can perform reliably across a wide range of environmental conditions — including demanding industrial sites and power facilities — while maintaining long-term structural integrity and measurement accuracy.

Q What relay models are compatible with this zero-sequence current transformer?

This transformer is compatible with relay models DD-11/60 and DD-1/60. Depending on the relay coil connection method (series or parallel) and scale value (15x1, 30x1, 15x2, 30x2), the zero-sequence current values range from 3~5A, 3~6A, or 24~45A.