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LMK1(BH)-0.66 current transformer

0102030405

LZZBJ9-35 Current Transformer - 35kV Power Measurement Solution from China Suppliers & Factory

The LZZBJ9-35 type current transformer is a high-quality device designed for power systems operating at a rated frequency of 50Hz or 60Hz and a rated voltage of 35kV. This essential component is primarily used for electric energy metering, current measurement, and relay protection, making it a vital part of efficient power management. Manufactured in compliance with the rigorous standards of GB20840.1-2010 and GB20840.2-2014, this product ensures reliability and accuracy. As a leading factory in China, we are proud to supply top-notch current transformers to meet the diverse needs of our clients worldwide. Choose us as your trusted suppliers for superior electrical solutions

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Product Detail

⚙️ Model and its Meaning

LZZBJ9-35 Current Transformer Model Diagram

📋 Overview

⚡ 15–40.5kV Indoor 🏭 Indoor Substation Use ✅ Industry Standard Compliant 🔒 High Reliability

15–40.5kV indoor current transformers are key components in electrical engineering, possessing excellent insulation performance, strong environmental adaptability, and high measurement accuracy. Their design and functionality comply with industry standards, ensuring compliance with the stringent requirements of indoor power systems. As we move towards a future centered on energy efficiency and reliability, the role of current transformers will become increasingly prominent, making them an indispensable part of building a sustainable and efficient energy future.

The 15–40.5kV indoor current transformer is an important electrical device used in power systems. It is widely used in various indoor substations, distribution rooms, and other power locations, and can be used in conjunction with switchgear, metering cabinets, and other equipment to provide strong support for the safe, stable, and efficient operation of the power system. Whether in industrial power supply systems or urban power grid substations, the 15–40.5kV indoor current transformer plays an indispensable role.

🌡️ Normal Service Conditions

🏢 Installation Location: Indoor, suitable for use in various environments such as power equipment and control rooms, to ensure the safe and stable operation of equipment and provide good working conditions.
🌡️ Ambient Temperature: Maximum temperature 40℃; minimum temperature -5℃; daily average temperature not exceeding 30℃, to adapt to climate changes in different seasons, ensure normal operation of the equipment under various temperature conditions, avoid performance impact due to excessively high or low temperatures, and guarantee the long-term stability of the equipment.
🌬️ Atmospheric Conditions: The atmosphere is free of severe pollution, ensuring that the equipment operates in a good environment, thereby improving its reliability and service life, reducing the possibility of failure, ensuring the stability and safety of the power system, and also providing convenience for equipment maintenance and management.

📊 Technical Parameters

Product Model	Rated Primary Current	Accuracy Level Combination	Rated Output	Rated Short-Term Thermal Current	Rated Dynamic Stability Current
LZZBJ9-35	15	0.2/10P10 0.5/10P10 0.2/5P20 0.5/5P20 0.2/0.5/10P10 0.2/0.5/5P20 0.2/10P10/5P20 0.5/10P10/5P20	15/20 20/20 15/20 20/20 15/20/20 15/20/20 15/20/20 20/20/20	1.5/1	3.75
	20			2/1	5
	30			3/1	7.5
	40			4/1	10
	50			5/1	12.5
	75			7.5/1	18.75
	100			10/1	25
	150			15/1	37.5
	200			20/1	50
	300			31.5/1	80
	400			31.5/2	80
	500			31.5/2	80
	600			31.5/2	80
	800			31.5/3	80
	1000			31.5/3	80
	1200			31.5/3	80
	1500			31.5/3	80
	2000			31.5/3	80

⚡ Rated Secondary Current: 5A or 1A.

🔋 Rated Insulation Level: 40.5 / 95 / 185 kV.

🔩 Structure and Characteristics

This type of current transformer features a fully enclosed epoxy resin casting structure, providing excellent insulation and moisture resistance, ensuring stable operation under various environmental conditions. The product has a clear outline, an attractive appearance, and is easy to clean, facilitating daily maintenance and management.

A junction box is installed at the secondary wiring point, with holes on the front and side to mate with the output terminals for wiring, ensuring safety and reliability, effectively preventing wiring faults, and ensuring accurate current signal transmission.

The base plate has a grounding bolt, a nameplate, and four mounting holes for installation. This rational design allows for flexible installation and fixation, adapting to different installation needs and further enhancing the stability and safety of the equipment.

🛡️ Epoxy Resin Casting 💧 Moisture Resistant 🔌 Junction Box Included 🔧 Easy Installation

❓ Frequently Asked Questions

Q What voltage range does the LZZBJ9-35 indoor current transformer support?

The LZZBJ9-35 indoor current transformer supports a voltage range of 15 to 40.5kV, with a rated insulation level of 40.5/95/185kV, making it suitable for a wide range of indoor medium-voltage power system applications.

Q What are the available accuracy level combinations for this current transformer?

The LZZBJ9-35 offers multiple accuracy level combinations including 0.2/10P10, 0.5/10P10, 0.2/5P20, 0.5/5P20, 0.2/0.5/10P10, 0.2/0.5/5P20, 0.2/10P10/5P20, and 0.5/10P10/5P20, allowing flexible configuration to meet various metering and protection needs.

Q What is the rated secondary current of the LZZBJ9-35 current transformer?

The rated secondary current is either 5A or 1A, depending on the specific application requirements. The appropriate secondary current should be selected based on the connected metering or protection equipment specifications.

Q What environments are suitable for installing the LZZBJ9-35 current transformer?

This current transformer is designed for indoor installation and is suitable for environments such as power equipment rooms, control rooms, indoor substations, and distribution rooms. The ambient temperature should be between -5℃ and 40℃, and the atmosphere should be free of severe pollution to ensure optimal performance and longevity.

Q What structural features make the LZZBJ9-35 reliable for long-term use?

The transformer features a fully enclosed epoxy resin casting structure that provides excellent insulation and moisture resistance. It includes a junction box at the secondary wiring point for safe and reliable connections, a grounding bolt on the base plate, and four mounting holes for flexible installation, all of which contribute to its long-term stability and safety.

Q What is the maximum rated primary current available for the LZZBJ9-35 model?

The LZZBJ9-35 model supports rated primary currents ranging from 15A up to 2000A. For higher current ratings such as 800A to 2000A, the rated short-term thermal current is 31.5/3 kA, and the rated dynamic stability current reaches up to 80 kA.