10KV Indoor Current Transformer

The 10KV Indoor Current Transformer (model LZZBJ9-10) is designed for accurate current measurement and protection in medium-voltage indoor power systems. It is commonly installed in switchgear panels, metering cabinets, and compact substations where stable signal output and insulation reliability are required under continuous operation.

In distribution automation and industrial power networks, the 10KV Indoor Current Transformer plays a critical role in converting high primary current into standardized secondary signals for metering instruments and protection relays. Its epoxy resin cast structure improves mechanical strength and ensures stable performance in humid or dusty indoor environments.

Product display and dimensions diagram

Engineering Design and Functional Structure

This series adopts a fully enclosed epoxy resin casting process, which integrates the iron core, secondary winding, and insulation system into a compact body. The design reduces partial discharge risk and enhances dielectric strength, making it suitable for long-term operation in energized switchgear.

The 10KV Indoor Current Transformer is also equipped with a reinforced terminal box for secondary wiring protection, along with a grounding base that ensures safe installation and compliance with electrical safety standards in industrial environments.

Technical Parameters

The model LZZBJ9-10 supports multiple primary current configurations and accuracy classes to meet different metering and protection requirements in power distribution systems.

Rated secondary current: 5A or 1A

Rated insulation level: 12/42/75KV

Application Scenarios

This type of current transformer is widely used in power distribution cabinets, indoor substations, industrial automation systems, and energy management systems. It is especially suitable for environments requiring high measurement accuracy and long-term stability under continuous load conditions.

The 10KV Indoor Current Transformer is commonly integrated with protection relays, energy meters, and monitoring systems in smart grid infrastructure and industrial power control networks.

Installation and Safety Design

The product base is designed with multiple mounting holes and grounding terminals, ensuring stable fixation and electrical safety during operation. The secondary terminal box provides additional protection against accidental contact and external interference.

Its compact structure allows easy installation in limited space switchgear systems, reducing wiring complexity and improving maintenance efficiency.

FAQ

Q1: What is the main function of this current transformer?
A: It converts high primary current into standardized low secondary current for metering and protection in indoor medium-voltage systems.

Q2: Where is the 10KV Indoor Current Transformer usually installed?
A: It is mainly used in indoor switchgear, distribution cabinets, and compact substations in industrial and utility power systems.

Q3: What are its key advantages compared with conventional CTs?
A: It offers epoxy resin insulation, compact design, high accuracy, and strong resistance to moisture and dust, making it suitable for long-term operation.

Q4: Can it support different current ranges?
A: Yes, multiple primary current ratings are available to match different load and system requirements.

Q5: Is it suitable for smart grid applications?
A: Yes, it is widely used in smart metering systems and automated distribution networks due to its stable signal output.

Q6: Does it require frequent maintenance?
A: No frequent maintenance is required. Periodic inspection of terminals and insulation condition is usually sufficient.