The LZJC-10 Series Current Transformers, including models LZJC-10Q and LZJC-10G, are fully enclosed epoxy resin-cast insulated pillar-type products designed for indoor use in power systems with a rated voltage of 10kV or below and a frequency of 50Hz or 60Hz. These transformers are ideal for current measurement, energy metering, and relay protection applications. Compact, lightweight, and compliant with IEC60044-1 and GB1208 standards, the LZJC-10 Series offers flexible installation in any position, meeting the demands of modern power systems.

LZJC-10 Type designation

The model designation reflects the key features of these current transformers:

• L: Denotes “Current Transformer” (CT).
• Z: Indicates “Casting Resin Insulated.”
• J: Represents “Differential Protection.”
• C: Refers to “Enhancement Type.”
• 10: Indicates the voltage grade, with a rated voltage of 10kV.

This clear designation ensures straightforward identification of the product’s structure and technical specifications.

LZJC-10Q, LZJC-10G Service conditon

• Altitude: ≤1000m
• Temperature: -5°C to +40°C
• Humidity: ≤80% at 20°C
• Environment: Free from harmful gases, chemicals, or pollutants that could damage insulation.
• Operational Stability: Designed for stable operation without chattering or impac

LZJC-10 Current Transformer Construction

The LZJC-10 features a fully enclosed pillar-type structure with durable epoxy resin insulation, offering exceptional safety and reliability. The design provides strong resistance to arcs, aging, and UV radiation, ensuring long service life in diverse conditions.

• Primary and Secondary Windings:
  • Primary Windings (P1, P2): Two busbars extend from the top, facilitating straightforward identification and connection.
  • Secondary Windings (S1, S2): Located beneath the cast body with exposed terminals for easy access, quick installation, and secure connections.
• Core Material: High-quality silicon steel minimizes losses and enhances accuracy.
• Compliance: Fully adheres to GB1208-1997 and IEC60044-1 standards.
• Applications: Ideal for current measurement, energy metering, and relay protection in 10kV power systems.

LZJC-10Q, LZJC-10G CT Technical Parameters

Designed for 10kV power systems, the LZJC-10 Series supports primary currents ranging from 5A to 1000A and offers multiple accuracy classes (0.2S, 0.2, 0.5, 10P10, 10P15). With short-time thermal currents up to 63kA and dynamic currents up to 130kA, these transformers deliver reliable measurement and protection performance.

Rated Primary Current (A)	Rated Output (VA)					Rated Short-time Current (kA/1s)	Rated Dynamic Current (kA)
	0.2S	0.2	0.5	10P10	10P15
5-100	10	10	10	15 15 15 20	15	100|1n	250|1n
150						13.5	34
200						18	45
300						27	67.5
400						36	90
500						45	112.5
600
750				20		63	130
800~1000

Customization and Support: Tailored solutions are available for LZJC-10, LZJC-10Q, and LZJC-10G models, including specific current ratios, enhanced outputs, and environmental adaptations. Contact us to design a product that matches your exact requirements.

LZJC-10 Outline and Dimensions of Installation

For detailed installation drawings and dimensions, please refer to the accompanying technical documentation or consult our technical team for further guidance. Ensuring proper installation is essential to achieve the stability, safety, and reliable long-term performance of the LZJC-10, LZJC-10Q, and LZJC-10G Current Transformers.

FAQs for LZJC-10 Current Transformers

1. What are the primary applications of the LZJC-10 Series Current Transformers?
   The LZJC-10 series is designed for current measurement, energy metering, and relay protection in 10kV indoor power systems.
2. How does the epoxy resin insulation benefit these transformers?
   The epoxy resin provides superior insulation, UV resistance, and protection against aging, ensuring reliability and a long service life in diverse conditions.
3. Can these transformers be customized for specific applications?
   Yes, customization options include specific current ratios, higher-rated outputs, and environmental adaptations to meet unique operational needs.
4. What safety measures are required during operation?
   Always ensure that the secondary circuit is closed during operation to prevent high voltage from being generated, ensuring safety and operational stability.
5. Are these transformers compliant with international standards?
   Yes, they comply with IEC60044-1 and GB1208 standards, guaranteeing reliability and compatibility with global power systems.
6. What is the operating temperature range for the LZJC-10 Series?
   The transformers operate reliably between -5°C and +40°C. For applications outside this range, modifications can be made to meet the required conditions.

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