Handheld Optical Digital Relay Protection Tester
Product Introduction
The MES-W402C Handheld Optical Digital Relay Protection Tester is a detection and testing instrument developed based on smart substation standards. It enables parsing of SV, GOOSE, B-code, and IEEE1588 messages; calculation of voltage and current magnitude, phase, and frequency; and real-time monitoring of GOOSE virtual terminals. It performs closed-loop testing of smart devices by sending SV and GOOSE messages and subscribing to/publishing GOOSE messages. Phase comparison is achieved through parsing and calculating different control blocks. Measurement of transmission delay for smart operation boxes and SOE timing accuracy is accomplished using hard contacts for inputs and outputs. Analysis, statistics, and synchronization of abnormal SV and GOOSE messages enable measurement of discrete events, frame loss, and absolute delay for merging units. The MES-402C's compact size, intuitive touchscreen operation, and robust measurement/analysis capabilities fully meet the testing and commissioning requirements for protection devices, measurement/control units, smart terminals, merging units, and station control systems during operation, maintenance, and commissioning of smart substations.
Product Parameter (specification)
2.1 Power Supply
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Power supply |
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Battery |
12.6V, 4400mAh high-capacity lithium battery |
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power adapter |
Input: AC100～240V, 50/60Hz, 0.7A Output: DC15V, 1.66A |
2.2 Power Consumption
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Power consumption |
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Overall power consumption |
≤6W |
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Full power operating time |
One charge provides more than 10 hours of continuous operation. |
2.3 Communication Interface Parameters
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Optical Ethernet communication interface: |
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model |
100Base-FX (100M full-duplex fiber optic network) |
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Number of ports |
3 pairs |
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Interface type |
LC |
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wavelength |
1310nm |
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Transmission distance |
≥1km |
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Scope of application |
Receive/transmit IEC61850-9-2/LE messages, receive/transmit GOOSE messages; IEC61588 time synchronization and other network messages. |
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Optical serial communication interface: |
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Number of ports |
2 |
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Interface type |
ST |
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wavelength |
62.5/125μm multimode fiber, wavelength 850nm |
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Transmission distance |
≥1km |
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Scope of application |
Receive/transmit IEC60044-7/8 (FT3), IRIG-B code time synchronization signal |
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Analog input communication interface: |
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Number of ports |
1 pair |
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Interface type |
rubber terminals |
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Hard-connector input/output communication interface: |
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Number of ports |
2 pairs |
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Interface type |
Aviation plug to rubber terminal |
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TF card slot interface: |
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Number of ports |
1 |
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Scope of application |
The TF card is used for importing full-site configuration files, exporting and storing waveform recordings and test reports, and upgrading application software. |
2.4 Time synchronization signal
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Time signal |
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IRIG-B code |
Time synchronization accuracy <1µs typ |
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IEC 61588 |
Time synchronization accuracy <1µs typ |
2.5 Mechanical Parameters
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Mechanical parameters |
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Display screen |
4.3-inch LCD screen (with touch functionality) |
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External dimensions |
176×100×58 mm |
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Total weight |
≤0.75kg |
2.6 Environmental Conditions
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Environmental conditions |
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Altitude |
≤5000m |
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Ambient temperature |
Normal operating temperature: -10～55℃ Storage and transportation: -25～85℃ |
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relative humidity |
5% to 95% |
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Atmospheric pressure |
60～106 kPa |
Product feature and application
I. Portable and Easy to Carry
- Dimensions: 176×100×58mm, Weight ≤0.75kg, comfortable to hold.
- 12.6V 4400mAh lithium battery provides over 10 hours of continuous operation on a full charge.
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II. Comprehensive Functionality
- Measurement & Analysis: Covers SV/GOOSE message parsing, voltage/current parameter measurement, harmonic analysis, phase verification, optical power/flow monitoring, etc.
- Testing Capabilities: Supports manual testing, status sequence testing, harmonic superposition testing, smart terminal testing, and compatibility with multiple IED device types.
- Anomaly Monitoring: Tracks frame loss, sequence errors, and other anomalies; measures merging unit delay and dispersion.
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III. User-Friendly Operation
- 4.3-inch touchscreen + shortcut keys for intuitive, logical operation.
- Supports SCD file import for batch parameter configuration and test report export.
- Graphical display of vector diagrams, waveforms, and other data for intuitive visualization.
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IV. Strong Adaptability
- Rich interfaces: 3 pairs of optical network ports, 2 optical serial ports, and compatibility with multiple message protocols.
- Compatible with smart substation protection devices, merging units, smart terminals, and other equipment.
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V. Stable Performance
- Total power consumption ≤6W, operating temperature -10°C to 55°C, suitable for field environments.
- Time synchronization accuracy ≤1μs, ensuring precise and reliable measurement data.
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Prodection details
1. Testing of protection, measurement and control devices, smart terminals, merging units, and station control systems
2. SV/GOOSE message parsing, parameter verification, and anomaly monitoring
3. Measurement of voltage/current magnitude, phase, frequency, harmonics, and other parameters
4. Specialized tests including phase verification, polarity testing, and MU delay measurement
5. Verification of protection trip values and times, plus complete unit testing
Company Qualifications
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