0.5kv Zero-Sequence CT Low Voltage Indoor Single Phase Resin Cast Current Transformer

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0.5kv Zero-Sequence CT Low Voltage Indoor Single Phase Resin Cast Current Transformer

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Product Description

Basic Specifications

Model NO.

LXK-120

Phase

Single

Operation Condition

Indoor

Usage

Protection, Measurement

Product Name

Current Transformer

Diameter of Inner Hole

120mm

Accuracy Class

5p10

Voltage Principle

Electromagnetic Induction

Origin

China

Insulating Medium

Resin Cast

Product Overview

0.5kV Low voltage indoor single phase residual current transformer

This current transformer is an indoor type, applied to rated voltage 0.5kV and rated frequency 50-60Hz. It is specifically designed for zero sequence overcurrent protection in power systems, high voltage three-phase AC generators, and motors. The design features a split-core structure (two halves) poured with resin and connected via clamps, making installation extremely convenient without disconnecting primary cables.

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Principle: Uses electromagnetic induction to convert zero-sequence current into a low-voltage signal through the interaction of the core and winding.

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Structure: Consists of a core, winding, and housing, supported by high-quality insulating materials. Available in single-phase or three-phase configurations.

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Features: Compact structure, reliable performance, high accuracy, and strong anti-interference capability for precise measurement.

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Application: Widely used for detecting grounding faults. It identifies large zero-sequence currents to trigger protective measures.

Operating Conditions

Altitude: Not exceeding 1000m.
Ambient Temperature: Range between -30°C and +40°C.
Relative Humidity: Less than 85%.
Environment: Free from steam, chemical deposition, explosive or corrosive media, and serious vibrations.

Technical Details & Applications

Frequently Asked Questions

1. What is the primary application of the LXK-120 current transformer?

It is primarily used for zero sequence overcurrent protection in power systems, specifically for high voltage three-phase AC generators and motors.

2. Can this transformer be installed on existing cables without cutting them?

Yes, the transformer is designed in two halves (split-core). It can be divided during installation and then combined using clamps, making it very convenient for existing setups.

3. What is the maximum cable diameter supported by the LXK-120?

The diameter of the inner hole is 120mm, meaning the outside diameter of the transmission cable should not exceed 120mm.

4. What are the required environmental conditions for operation?

It should be used indoors at altitudes below 1000m, with temperatures between -30°C and +40°C, and relative humidity below 85%.

5. What is the accuracy class of this current transformer?

The LXK-120 current transformer features an accuracy class of 5p10, suitable for protection and measurement purposes.

6. How does the zero-sequence current transformer work?

It operates on the principle of electromagnetic induction, converting the zero-sequence current in a three-phase circuit into a low-voltage signal for fault detection.