LZX-10, LZZ-10, LZZW-10 Current Transformers – High-Voltage Epoxy Resin-Cast, are fully enclosed, epoxy resin-cast pillar-type devices designed for both indoor and outdoor use. Suitable for power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 10kV or below, these transformers comply with IEC44-1 and GB1208 standards, ensuring high accuracy and reliable performance for current measurement, energy metering, and relay protection in demanding environments.

LZX-10, LZZ-10 CT Type designation

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

• L: Denotes “Current Transformer” (CT).
• Z: Indicates “Casting Resin Insulated.”
• Z: Specifies “Post Type” construction.
• 10: Refers to the voltage grade, indicating a rated voltage of 10kV.

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

LZX-10, LZZW-10 Current Transformer Service conditon

• Altitude: ≤1000m
• Temperature: -25°C to +40°C
• Humidity: ≤90% at 20°C
• Environment: Free from harmful gases and pollutants
• Vibration: Designed for stable, impact-free operation.

The epoxy resin structure provides excellent resistance to pollution and humidity, ensuring reliable performance in specified conditions. Customization is available to meet stricter environmental requirements based on user needs.

LZX-10, LZZ-10 CT Construction

• Epoxy Resin-Cast Design: Fully enclosed pillar-type structure with resistance to arcs, aging, and UV radiation, ensuring excellent insulation, durability, and a long service life.
• Primary and Secondary Windings:
  • Primary Windings (P1, P2): Emerge from the top for easy identification and connection.
  • Secondary Windings (S1, S2): Accessible from the lower side, designed for convenient installation and secure connections.
• Core Material: High-quality silicon steel core minimizes losses and delivers high accuracy.
• Compliance: Fully adheres to GB1208-1997 and IEC44-1 standards, ensuring reliable and consistent performance.
• Applications: Ideal for current measurement, energy metering, and relay protection in 10kV power systems.

LZX-10, LZZ-10 CT Technical Parameters

The LZX-10 and LZZ-10 Current Transformers are designed for 10kV power systems, supporting primary currents from 5A to 400A and offering multiple accuracy classes, including 0.2S, 0.2, 0.5, 10P10, and 10P15. With short-time thermal currents up to 45kA and dynamic currents up to 112.5kA, meet power grid standards with a rated insulation level of 12/42/75 kV, they deliver reliable performance for both measurement and protection.

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	13.5	34
150	10	10	10	15	15	18	45
200	10	10	10	15	15	27	67.5
300	10	10	10	15	15	36	36
400	10	10	10	15	15	45	112.5

Customization and Support: We offer tailored solutions for LZX-10, LZZ-10, and LZZW-10 Current Transformers to meet unique requirements, such as specific current ratios, higher-rated outputs, or stricter environmental adaptations. Contact us for customized designs to perfectly match your application needs.

LZZW-10 Epoxy Resin-Cast Current Transformer – Outline

For detailed installation drawings and dimensions, refer to the provided documentation or contact our technical team for assistance. Proper installation guarantees the stability, safety, and long-lasting performance of the LZX-10, LZZ-10, and LZZW-10 Current Transformers.

FAQs for LZX-10 Current Transformers

1. What are the main applications of LZX-10, LZZ-10, and LZZW-10 Current Transformers?
   These transformers are used for current measurement, energy metering, and relay protection in indoor and outdoor 10kV power systems.
2. How does the epoxy resin-cast structure enhance performance?
   The epoxy resin-cast structure provides superior insulation, arc resistance, UV protection, and durability, ensuring long-term reliable operation in harsh environments.
3. Can the LZX-10, LZZ-10, and LZZW-10 Current Transformers be customized?
   Yes, customization options include tailored current ratios, higher-rated outputs, and adaptations for stricter environmental conditions.
4. What are the safety measures required during operation?
   The secondary circuit must remain closed during operation to avoid high voltage generation, ensuring safety and operational stability.
5. What compliance standards do these transformers meet?
   They comply with IEC44-1 and GB1208-1997 standards, ensuring reliability, precision, and compatibility with power grid systems.
6. Are these transformers suitable for outdoor applications?
   Yes, the robust epoxy resin-cast structure and high insulation levels make them ideal for both indoor and outdoor use, even in challenging environments.

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