Three Phase Secondary Current Injection Relay Test Set

The MOEORW-WTW43 is a portable touch-screen relay protection tester adopting Android operating system and dual-DSP architecture. It features lightweight design, heat dissipation optimization and rich built-in test modules. With 4-phase voltage and 3-phase standard outputs, this device supports multiple test modes and remote connection functions, and is applicable to field commissioning, daily maintenance and laboratory testing of relay protection equipment in power systems.

Analog Output

Switching Quantity & Timing

Physical & Power Parameters

Auxiliary DC Power

Switchable 110 V / 220 V independent DC auxiliary power supply.

Hardware Configuration & Structural Design
1.Touch Control & Intelligent System: Equipped with 10.5-inch high-definition touch screen and Android system, the human-computer interaction is intuitive and responsive, with no complex mechanical keys.
2.Dual-core DSP Processor: Adopts dual-DSP architecture and high-bit D/A converter to ensure smooth output waveforms and high signal fidelity.
3.Optimized Heat Dissipation: The fan adjusts speed automatically according to internal temperature, which reduces operating noise while ensuring heat dissipation efficiency.
4.Rich Communication Interfaces: Built-in WiFi, Bluetooth, network port and USB interface, supporting local wireless connection and remote equipment interconnection.
5.Lightweight Portable Structure: The overall size is slightly larger than A4 paper, with a net weight of only 7.2 kg, which is convenient for field carrying and mobile operation.
6.Self-calibration Function: Supports software automatic calibration, eliminating the need for opening the cabinet to adjust potentiometers and improving long-term precision stability.
 

Performance Advantages
1.High-precision Output: AC signal accuracy is 0.2 class and DC signal is 0.5 class, complying with national industrial test standards.
2.Flexible Signal Combination: 4 voltage channels and 3 current channels support arbitrary amplitude and phase configuration; series connection of voltage channels for higher output, and parallel connection of current channels for large current output.
3.Diverse Test Modes: Integrates manual, automatic increment and automatic decrement test modes, adapting to different test scenarios.
4.Wide Compatibility: The linear power amplifier realizes non-impact signal output, which is compatible with various types of protection devices without causing signal interference.
 

Functional & Application Value
1.Full-featured Test Modules: Contains AC test, DC test, frequency test, state sequence, differential protection, synchronous test and other modules, covering all conventional relay protection test items.
2.Built-in Calculation Tools: Embeds short-circuit calculation, power measurement and other auxiliary tools to simplify parameter setting for complex fault simulation.
3.Convenient Upgrade: Supports offline upgrade via USB flash drive, which is simple and fast for function iteration and version update.
4.Complete Protection Mechanism: Multiple protection designs including over-current, over-voltage, short-circuit and over-temperature effectively avoid equipment damage caused by misoperation.

1.Industrial Power Maintenance: Periodic inspection and fault troubleshooting of relay protection for industrial power distribution systems.
2.Distribution Network Engineering: Field commissioning and acceptance of 6~35 kV distribution line protection equipment.
3.Relay Manufacturer: Factory testing and performance verification of various voltage/current relays, directional relays and synchronous relays.
4.On-site Emergency Repair: Portable test equipment for emergency detection of protection faults in power grids.
Technical Training: Practical training for power operation and maintenance personnel.

Interface Layout
1.Front panel: 10.5-inch touch screen, function shortcut area.
2.Rear panel: 4 voltage output terminals (UA, UB, UC, UX), 3 current output terminals (IA, IB, IC), 8 binary input ports, 4 binary output ports, independent DC power terminal, grounding terminal.
3.Side panel: Network port, USB interface, power input socket, power switch, heat dissipation vents.
 

Standard Accessories
1.Power cord × 1
2.High-voltage test cables, current test cables (complete set)
3.Binary input/output connecting wires × 1 set
4.User manual × 1
5.USB flash drive (for driver and upgrade files) × 1

Core Operation Specifications
1.Before wiring, confirm all output terminals are in non-output status to prevent accidental power transmission.
2.When using potential binary input, connect the positive pole to the common terminal to guarantee signal recognition.
3.For large current output (＞10 A), use thick and short cables and control the working time within the specified range.
4.Do not block the heat dissipation vents during operation to avoid over-temperature protection.

Software Upgrade Steps
1.Copy the upgrade file to the root directory of the USB flash drive.
2.Insert the USB flash drive into the device's USB port, click the upgrade icon on the system interface.
3.Select "Upgrade DSP" or "Upgrade Android APP" as required, and wait for the progress bar to complete the upgrade.
4.Restart the device after the upgrade is finished.

Routine Maintenance
1.Keep the equipment dry and clean, and avoid exposure to humid, dusty and corrosive environments.
2.Check the integrity of test cables regularly and replace damaged cables in a timely manner.
3.Do not install third-party applications on the Android system to avoid system failure.