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Three-phase relay test system UHV-1201
simulationfor electrical networksfor transformers

Three-phase relay test system - UHV-1201 - Wuhan UHV Power Technology Co.,Ltd. - simulation / for electrical networks / for transformers
Three-phase relay test system - UHV-1201 - Wuhan UHV Power Technology Co.,Ltd. - simulation / for electrical networks / for transformers
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Go to the Wuhan UHV Power Technology Co.,Ltd. website for more information

Characteristics

Test type
simulation
Domain
for electrical networks
Applications
for transformers, three-phase relay
Configuration
modular, portable, on site
Other characteristics
automatic, precision, secondary injection

Description

Product Introduction
  • The Relay Protection Tester is a new-generation miniaturized microcomputer relay protection tester developed in accordance with the DL/T 624-2023 Technical Conditions for Microcomputer Relay Protection Test Devices issued by the Ministry of Electric Power. It has been designed by extensively incorporating user feedback and summarizing the advantages and disadvantages of similar domestic products, while fully leveraging modern advanced microelectronics technology and components.
  • The tester features flexible voltage and current output, supporting up to 6-phase voltage and 6-phase current outputs. It can be configured in various modes, including conventional 4-phase voltage with 3-phase current, 6-phase voltage only, 6-phase current only, and 12-phase output modes. This ensures compatibility with traditional testing methods while also facilitating specialized tests such as three-phase transformer differential testing and fast bus transfer / automatic transfer tests for auxiliary power systems.

Product Features
  • Flexible Voltage and Current Output: Features standard 4-phase voltage and 3-phase current output, enabling a variety of combined outputs for different types of protection tests. Each phase voltage can output up to 120V, and the three-phase current combined output can reach 120A. The fourth-phase voltage Ux is a multifunctional channel, configurable as 3U0, a synchronization voltage, or any specified voltage value as needed.
  • Easy Operation: The device panel is equipped with a trackball mouse, an optimized keyboard, and a large-screen TFT LCD display. It comes with a built-in full Chinese Windows platform operating software, allowing immediate use upon startup with simple operation.
  • Dual Operation Modes: In addition to standalone operation, the device can be connected to an external laptop or desktop computer. Both operating modes offer fully consistent functionality, providing true dual-mode versatility.
  • High-Fidelity Linear Power Amplifier: The output consistently utilizes high-fidelity, high-reliability modular linear power amplifiers rather than switching power amplifiers, delivering excellent performance. This design eliminates high- and medium-frequency interference to the test site and ensures smooth waveforms across the entire current range, from large to small values.
  • High-Performance Host Platform: The output section is controlled by a DSP, offering fast operation, strong real-time digital signal processing capability, wide transmission bandwidth, and high-resolution D/A conversion. This results in high output waveform precision, low distortion, and excellent linearity. The device incorporates advanced technologies, precision components, and high-quality materials, with a professional structural design that ensures compact size, light weight, full functionality, and easy portability. Ready for immediate use, it is highly convenient for on-site testing.
  • Powerful Software Capabilities: The software supports a wide range of large-scale, highly automated verification tasks. It enables easy testing and scanning of various protection settings, fault playback, real-time test data storage, vector diagram display, online report printing, and more.
  • Independent Dedicated DC Power Output: The device includes a dedicated adjustable DC power output, providing both 110V and 220V outputs as standard.
  • Comprehensive Interfaces: The device panel features a built-in keyboard and mouse for standalone operation, while external keyboard and mouse can also be connected via dedicated interfaces. It is also equipped with two USB ports and RS232 ports for communication with computers and other external devices.
  • Comprehensive Self-Protection Features: The device incorporates a well-designed heat dissipation structure, reliable and comprehensive hardware protection measures, and power soft-start functionality. Software-based fault self-diagnosis and output lock features further enhance operational safety.

Product Parameters
  • Current channel number: Standard 6 phase
  • Voltage channel number: Standard 6 phase
  • AC current output range: 30A/phase or 180A (six parallel)
  • DC current output range: 10ADC/phase
  • AC voltage output range: 120VAC/phase
  • DC voltage output range: 160VDC/phase
  • AC current output
  • 6 phase current output per phase (effective value): 0~30A output precision 0.2
  • 3 phase current output per phase (effective value): 0~60A
  • 6 phase parallel current output (RMS): 0~180A
  • Phase current long-term allowable working value (RMS): 10A
  • Maximum output power of phase current: 300VA
  • 6 phase parallel current maximum output power): 1000VA
  • 6 Allowable working time for maximum output of phase parallel current: 10s
  • Frequency range (fundamental): 0~1000Hz
  • Harmonic frequency: 120
  • DC current output
  • Current output: 0~±10A/phase output accuracy 0.5 level
  • Maximum output load voltage: 20V
  • AC voltage output
  • Phase voltage output (RMS): 0~120V output precision 0.2
  • Line voltage output (RMS): 0~240V
  • Phase voltage/line voltage output work : 80VA/100VA
  • Frequency range (fundamental): 0~1000Hz
  • Harmonic frequency: 1~20
  • DC voltage output
  • Phase voltage output amplitude: 0~±160V output accuracy 0.5
  • Line voltage output amplitude: 0±320V
  • Phase voltage/line voltage output power: 70VA/140VA
  • Switching value
  • 8 switch inputs Null contact 1~20mA, 24V
  • Potential contact access "0" : 0 ~ +6V; 1: +11V to +250 V
  • 4 pairs of switching output: DC:220V/0.2A; AC220 V/0.5 A
  • Time measuring range
  • Time measuring range: 0.1ms~9999s
  • Measurement accuracy: 0
  • Volume: 375×350×180 (mm3)
  • Unit weight: 17kg

Notes:
  • 1. Pay attention to operational safety and prevent electric shock accidents;
  • 2. The grounding terminal of the host is reliably grounded to prevent static electricity induction and reduce electromagnetic interference;
  • 3. It is prohibited to plug and unplug live cables. Before plugging and unplugging cables, the power of the host and computer should be turned off;
  • 4. Prohibit external current and voltage from accessing the current and voltage ports of the tester, otherwise it may damage the tester;
  • 5. The communication interface should be checked and confirmed to be connected correctly;
  • 6. After starting the tester, it is recommended to preheat for 2 minutes. After shutting down, wait for at least 1 minute before restarting, otherwise it may damage the tester or cause abnormal operation of the instrument;
  • 7. It should be ensured that the built-in testing program of the tester is started and the amplifier and DSP ready lights are on before starting the test;
  • 8. During testing, the external circuit of the device under test should be disconnected and the N terminals of the current and voltage should be grounded together, otherwise it may cause inaccurate testing;
  • 9. The analog output of the tester cannot be used as a power supply. Some models have auxiliary DC power supplies that can be used as DC power supplies for protective devices, but cannot be used as DC power supplies for operating circuits;
  • 10. Precision instruments should be waterproof, shock resistant, and dust-proof. They should be placed in a clean and dust-free area for use at power plant and power station construction sites. When not in use, please be careful to place them in the instrument box. When cleaning the surface of the instrument, turn off the power and carefully wipe it with a damp cloth.
  • 11. The normal ventilation of the tester should be ensured, and the ventilation holes and fans at the lower and rear of the instrument should not be blocked to avoid overheating;
  • 12. Be careful when using and handling, avoid heavy pressure and collision, otherwise it may cause damage and malfunction; Instruments and computers should be handled with care and managed by dedicated personnel.

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Relay Protection Tester

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