3-Phase Relay Tester

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3-Phase Relay Tester

The 3 - Phase Relay Tester is a professional device designed for the testing and calibration of relay protection devices in power systems. Based on modern microelectronics technology and advanced testing concepts, it can simulate various power system faults and operating conditions. Widely used in testing, calibration, and research in the power industry, this device is an essential tool for power system maintenance and repair personnel due to its high precision, multifunctionality, and portability.

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Description

Technical Parameters

Product Overview & Application Scenarios

Product Overview

The 3 - Phase Relay Tester is a professional device designed for the testing and calibration of relay protection devices in power systems. Based on modern microelectronics technology and advanced testing concepts, it can simulate various power system faults and operating conditions. Widely used in testing, calibration, and research in the power industry, this device is an essential tool for power system maintenance and repair personnel due to its high precision, multifunctionality, and portability.

Application Scenarios

Power System Maintenance and Repair: Used for testing and calibrating various relay protection devices, such as current protection, voltage protection, and differential protection, to ensure they operate accurately during faults.

Power Equipment Commissioning: Validates the settings and operating characteristics of protection devices during the installation and commissioning stages of power equipment.

Research and Education: Provides an experimental platform for power system - related research projects and serves as a practical training device for power engineering education.

Fault Simulation and Analysis: Simulates various instantaneous and permanent faults to help analyze the behavior of protection devices and identify fault causes.

Automated Testing and Calibration: Connects with a computer to achieve automated testing processes, improving testing efficiency and accuracy.

Key Features & Advantages

Multifunctional Output

Standard 4 - phase voltage and 3 - phase current output can be flexibly combined to meet various protection testing requirements.

Each phase voltage can output up to 120V, and the combined 3 - phase current can output up to 120A, offering strong output capabilities.

The 4th phase voltage (Ux) is a multifunctional voltage option that can be set as 3U₀ or synchronization voltage, adapting to complex testing scenarios.

Convenient Operation

Standalone Operation: Equipped with a large LCD display and a rotary mouse controller, the intuitive Chinese interface allows for easy on - site testing without additional external devices.

Dual Operation Modes: With the Windows - based Chinese operation software, more complex automated testing can be achieved, supporting data storage, fault waveform plotting, and report printing.

High Precision and Reliability

AC output accuracy reaches 0.2 grade, and DC output accuracy reaches 0.5 grade, ensuring the accuracy of test results.

The device features rational heat dissipation design and multiple protection measures, with a fault self - diagnosis function for stable and reliable operation.

Rich Switching Interfaces

8 switching input channels and 4 pairs of relay outputs are provided, compatible with both open contacts and potential contacts, and can be expanded according to user needs.

High Cost - Performance Ratio

Combines the high performance of large testers with the portability of small testers, offering a reasonable price and excellent performance - to - price ratio.

Operating Conditions

Environmental Conditions

Temperature Range: - 10℃～+50℃

Relative Humidity: ≤90% (at 40℃)

Atmospheric Pressure: 80kPa～106kPa

Power Requirements

Input Voltage: AC 220V±10%

Frequency: 50Hz±0.5Hz

Power Consumption: ≤500W

Installation Conditions

The device should be placed in a well - ventilated area free from strong electromagnetic interference.

Avoid direct sunlight and prolonged exposure to damp environments.

Ensure proper grounding of the device to guarantee operational safety and testing accuracy.

Additional Information

Device Dimensions and Weight

Dimensions: 400mm×300mm×180mm (L×W×H)

Weight: Approximately 10kg, portable and easy for on - site operation.

Software Support

Windows - based Chinese operation software is provided, supporting automated testing, data storage, fault waveform plotting, and report printing.

The software supports online upgrades to meet evolving testing requirements.

After - Sales Service

Comprehensive after - sales service includes device installation, operation training, and technical support.

Free repairs during the warranty period, and paid repair services are available after the warranty period to ensure long - term stable operation of the device.

Maintenance & FAQs

Q: What should I do if the device suddenly freezes during use?

A: Check if the power supply is stable and restart the device after reinserting the power cord.
If the problem persists, check the device's heat dissipation and clean the dust from the cooling fan and vents.
Contact after - sales service personnel for further inspection and repair.

Q: How can I calibrate the device if the output current or voltage accuracy is inaccurate?

A: Check if the input power supply meets the requirements, ensuring stable voltage and frequency.
Use a high - precision standard source to calibrate the device according to the calibration steps in the user manual.
If the accuracy is still off after calibration, the internal components may be aged or damaged, and you should contact the manufacturer for repair.

Q: How can I solve the issue of increased fan noise after prolonged operation?

A: Check if the cooling fan is blocked by dust and clean the fan and vents.
Check if the fan is loose or damaged and replace it if necessary.
Ensure the device is placed in a well - ventilated area to avoid prolonged high - temperature operation.

Q: How can I troubleshoot if the device cannot recognize the switching input signal?

A: Check if the input signal meets the device's requirements (open contact or potential contact).
Check if the signal cable is securely connected and free from short circuits or open circuits.
Use a multimeter to measure the voltage and current of the input signal to ensure it is within the device's allowable range.
If the problem persists, the internal interface of the device may be damaged, and you should contact the manufacturer for repair.

Q: What should I do if the device cannot communicate with the computer during connected operation?

A: Check if the connection cable between the device and the computer is correctly connected and ensure the communication interfaces match.
Check if the communication software on the computer is correctly installed and configured, reinstall the software, and restart the computer.
Check if the device's communication settings match those on the computer, such as baud rate and data bits.
If the problem persists, the communication module of the device may be faulty, and you should contact the manufacturer for repair.

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