Six-Phase Microprocessor-Based Relay Protection Tester

Six-Phase Microprocessor-Based Relay Protection Tester

    MOEORW-WTW76 six-phase microprocessor relay protection tester is a professional test system independently developed for 500kV and above UHV relay protection test. Based on years of industry experience, the whole machine is optimized and designed to replace imported equipment, meeting the requirements of fast transient change and high precision of UHV protection test. It can output 12 channels of current and voltage, support amplitude modulation, phase shift, independent frequency conversion, multi-state fault simulation and harmonic superposition, with distortion alarm and waveform playback function. It is equipped with Windows system software, which automatically generates test database and reports, and is widely used in power plants, substations and research institutions.

1.1.1 AC/DC Current Source

a. Communication

Maximum output current (RMS): 30A/phase, three-phase parallel connection: 90A.

Maximum output power: ≥400VA/phase.

Output accuracy: 0.1% (0.2-Max), <1mA (1-200mA).

Output frequency: 0-1KHz.

Amplitude-frequency response: Amplitude variation ≤ ±1.5% in the 10-1000Hz range.

b. DC

Maximum output current: 0-15A/phase or 0-20A/phase, three-phase parallel connection: 45A or 60A.

Maximum output power: 200W or 250W continuous operation.

Output accuracy: 0.5%.

c. Other

Resolution: 1mA.

Three or six channels share a common neutral point current source.

The amplitude, frequency, and phase of the output current of each phase can be adjusted independently.

The current rise and fall time is less than 100µs.

Automatic detection and protection against open circuit, overheating, overload, and distortion.

1.1.2 AC/DC voltage source

a. Communication

Maximum output voltage (RMS): 125V/phase, two phases in series: 0-250V.

Maximum output power (rated voltage): ≥75VA/phase.

Output accuracy: 0.1% (0.5-125V).

Output frequency: 0-1KHz.

Amplitude-frequency response: Amplitude variation ≤ ±1.5% in the 10-1000Hz range.

The fourth voltage can be set to zero-sequence voltage or any other setting.

b. DC

Maximum output voltage: 0-150V/phase, two phases in series: 0-300V.

Maximum output power: 100W continuous operation.

Output accuracy: 0.5%.

c. Other

Resolution: 1mA.

Three or six channels share a common neutral point voltage source.

The amplitude, frequency, and phase of the output voltage of each phase can be adjusted independently.

The voltage rise and fall time is less than 100µs.

Automatic detection and protection against short circuits, overheating, overload, and distortion.

1.1.3 Phase

Phase angle range: 0°～360°.

Phase resolution: 0.001°.

Phase angle accuracy: ±0.2°.

1.1.4 Frequency

Frequency range: 0-1000Hz.

Frequency accuracy: Absolute deviation ≤ 2mHz.

Resolution: 1mHz.

It can superimpose harmonics and DC of any amplitude from 2 to 20th order.

1.1.5 Synchronization

Voltage and current synchronization ≤100μS.

1.1.6 Input Quantity and Time Measurement Requirements

Eight pairs of independent non-polar input terminals, either dry contact or 0-250V potential.

The timer range is 1ms to 9999.999s.

Resolution: 1ms.

1.1.7 Output Quantity

4 sets of programmable auxiliary dry contacts.

Contact capacity: 0-250V, 0.5A.

1.1.8 Independent Auxiliary DC Power Supply

DC 110V/220V±10% independent auxiliary DC power supply.

Capacity: 100W continuous operation.

Short circuit and overload protection.

1.1.9 Input Power

AC220V±15%, 50HZ, 10A (Max)

1.1.10 Other

The device has a built-in industrial control computer, which can independently perform all testing functions without the need for an external computer.

Testing software with a built-in Windows operating interface;

It features a large color LCD screen and offers touchpad and keyboard operation;

It provides a USB interface, which can be used to connect an external keyboard and mouse for operation, and can also be used to exchange data and upgrade software via USB flash drive;

The device is equipped with a network communication interface and can also be connected to an external computer to perform various testing functions.

1. Complete test functions: relay test, differential test, fault simulation, impedance characteristic test, line protection test, programmable signal generator, automatic device test
2. Multi-channel output: support 6-phase current + 6-phase voltage, suitable for differential protection and fast switching test
3. High stability and precision: independent adjustment of each channel, fast response, perfect protection
4. Friendly software: graphical interface, automatic report generation, easy data management

1. Power plants: relay protection parameter setting and performance test
2. Substations: 500kV and above UHV protection verification and fault simulation
3. Power supply bureaus: line protection and automatic device maintenance
4. Research institutes: new technology development and performance evaluation
5. Manufacturing enterprises: factory inspection and fault diagnosis of protection equipment