Circuit Analyzer with RCD & Impedance Test, MY5908

Product Introduction

Circuit Analyzer with RCD & Impedance Test, MY5908 is a compact multifunctional electrical testing instrument designed for circuit safety inspection, electrical troubleshooting, commissioning, and performance verification. It combines RCD testing, leakage protector testing, loop impedance measurement, voltage drop analysis, voltage measurement, frequency measurement, and True RMS functions in one handheld device.

The MY5908 helps electricians and electrical professionals evaluate circuit conditions without relying on multiple separate instruments. Its combination of RCD trip testing, impedance measurement, and voltage drop testing makes it suitable for identifying potential wiring problems, checking protective devices, and verifying electrical circuit performance.

With a compact size of 194 × 78 × 37 mm and a weight of only 254 g, the analyzer is convenient to carry between job sites and suitable for routine inspection and commissioning work.

Key Features

1. RCD Trip Test

The instrument supports RCD trip-time testing with a measurement range of 1 ms to 6.500 s. It supports a 30 mA trip current with an accuracy of ±1.0%, helping users evaluate whether residual current protection devices respond within the required test conditions.

2. Leakage Protector Testing

The MY5908 also supports leakage protector testing at a 6 mA trip current with ±1.0% accuracy. This function provides an additional method for checking the response of protective devices during electrical safety inspections.

3. Loop Impedance Measurement

The analyzer measures loop impedance between line-to-neutral/ground over a range of 0.00 to 3.00 Ω, with 0.1 Ω resolution.

Loop impedance testing can help electricians identify circuit conditions that may affect protective device operation and electrical system performance.

4. Voltage Drop Testing

The voltage drop function measures from 0.1% to 99.9%, helping identify potential undersized wiring or excessive voltage loss in electrical circuits.

This makes the instrument useful when checking whether a circuit can deliver stable voltage under operating conditions.

5. True RMS Measurement

True RMS measurement provides accurate electrical readings when working with distorted or non-sinusoidal waveforms. This feature makes the analyzer suitable for modern electrical systems containing electronic loads and other equipment that can produce waveform distortion.

6. Wide Line Voltage Measurement

The MY5908 measures line voltage from 85.0 to 265.0 V. It can also provide neutral-ground voltage, peak voltage, and frequency measurements for more comprehensive circuit analysis.

7. Voltage Test Under Load

The voltage test under load covers 10.0 to 265.0 V, allowing users to check circuit voltage while the circuit is subjected to operating conditions.

This function can help evaluate actual circuit capacity and identify voltage-related issues that may not be apparent during simple no-load measurement.

8. Dual Display

The analyzer features a dual display that allows two parameters to be viewed simultaneously. This can make measurements easier to compare during circuit inspection and reduce the need to switch repeatedly between measurement screens.

9. Backlit LCD

The backlit LCD improves display visibility in different working environments, including areas where ambient lighting is limited.

10. Data Hold Function

The data hold function allows users to retain the displayed measurement value, making it easier to record or review test results without continuously watching the instrument screen.

11. Automatic Shut-Off

An automatic shut-off function helps reduce unnecessary battery consumption when the instrument is not being used.

12. Compact and Portable Design

Measuring only 194 × 78 × 37 mm and weighing approximately 254 g, the MY5908 is designed for convenient handheld operation and transportation. Its compact form is suitable for electricians and inspectors who need to perform electrical tests at multiple locations.

Measurement Functions

The MY5908 integrates multiple electrical test functions into one portable analyzer:

• RCD trip-time testing

• RCD trip-current testing

• Leakage protector testing

• Loop impedance measurement

• Voltage drop measurement

• Line voltage measurement

• Neutral-ground voltage measurement

• Peak voltage measurement

• Frequency measurement

• True RMS measurement

• Voltage testing under load

• Dual-parameter display

• Data hold

• Automatic power-off

Technical Specifications

Applications

Circuit Analyzer with RCD & Impedance Test, MY5908 is suitable for a wide range of electrical inspection and testing applications, including:

• Electrical safety inspection

• RCD and leakage protection testing

• Circuit commissioning

• Electrical troubleshooting

• Loop impedance testing

• Wiring condition assessment

• Voltage drop analysis

• Building electrical inspection

• Facility maintenance

• Electrical installation verification

• Commercial building commissioning

• Industrial electrical maintenance

Suitable for Electrical Professionals

The MY5908 is designed for professionals who need a portable instrument for multiple circuit testing tasks. It can be used by electricians, electrical safety inspectors, facilities engineers, maintenance technicians, and building commissioning professionals.

Instead of carrying several individual meters for different inspection tasks, users can perform multiple circuit checks with one compact analyzer. This can make routine electrical testing more convenient, particularly when measurements need to be taken across different rooms, distribution points, buildings, or job sites.

Electrical Safety and Circuit Performance Analysis

A reliable electrical inspection process requires more than measuring line voltage alone. RCD response, loop impedance, voltage drop, and voltage under load can provide additional information about circuit condition and protective device performance.

By combining these functions in one instrument, MY5908 Circuit Analyzer provides a practical solution for electrical safety checks and circuit performance evaluation. The True RMS function further supports reliable measurement when testing circuits with distorted waveforms or modern electronic loads.

Main Advantages at a Glance

• Multifunction circuit testing in one handheld instrument

• RCD trip testing from 1 ms to 6.500 s

• 30 mA RCD trip current

• 6 mA leakage protector testing

• Loop impedance measurement up to 3.00 Ω

• Voltage drop measurement up to 99.9%

• True RMS measurement

• 85.0–265.0 V line voltage measurement

• 10.0–265.0 V voltage testing under load

• Neutral-ground and peak voltage measurement

• Frequency measurement

• Dual-parameter display

• Backlit LCD

• Data hold function

• Automatic shut-off

• Compact 194 × 78 × 37 mm design

• Lightweight 254 g construction

• Suitable for electricians, inspectors, engineers, and commissioning professionals

Portable Solution for Electrical Testing

For professionals who need to inspect protective devices, evaluate circuit impedance, check voltage conditions, and identify potential wiring problems, Circuit Analyzer with RCD & Impedance Test, MY5908 combines essential testing functions in a compact and portable instrument.

Its RCD testing, leakage protector testing, loop impedance, voltage drop, True RMS, voltage, frequency, and load-voltage functions provide a comprehensive tool for electrical safety inspection, maintenance, troubleshooting, and commissioning work.

For product details, technical specifications, and supply information, contact Dongguan Mayilon Electronic Technology Co., Ltd. for further assistance.

Circuit Analyzer with RCD & Impedance Test, MY5908 provides a compact solution for convenient electrical safety and circuit performance testing.