Product Introduction

       ND2000A-6H Microcomputer-Based Relay Protection Test Set, also known as the Six-Phase Microcomputer-Based Relay Protection Test Set and Six-Phase Microcomputer Relay Protection Calibrator, is a specialized power test instrument for relay protection. The six-phase microcomputer relay protection test set features 6-phase voltage and 6-phase current output, suitable for testing various types of relay protection devices. Each phase voltage can output 125V, each phase current 30A, and the three-phase current combined can output 180A.

       ND2000A-6H Series Microcomputer-Based Relay Protection Test Set is developed based on the "Technical Conditions for Microcomputer-Based Relay Protection Test Equipment (Discussion Draft)" issued by the Ministry of Electric Power, incorporating extensive user feedback and summarizing the strengths and weaknesses of similar domestic products. It fully utilizes modern advanced microelectronic technologies and components to achieve a new compact microcomputer-based relay protection test set. This six-phase microcomputer relay protection test set uses a high-performance industrial computer as the control unit, running the Windows operating system directly. The device panel is equipped with an 8.4" TFT true-color LCD display, touchpad mouse, and optimized keyboard, allowing direct use without external mouse or keyboard. The back panel includes USB ports, communication ports, etc., facilitating data storage, data communication, and software upgrades. Throughout the test process and results, everything is displayed on the LCD screen with a full Chinese interface that is clear, bright, and intuitive. Operation control is performed via the touchpad and panel keyboard. Simple and convenient to operate, it requires only basic computer knowledge and is easy to master. The Six-Phase Microcomputer Relay Protection Test Set is an indispensable tool for relay protection testing professionals.

Product Features

☆、Meets all on-site testing requirements. This instrument has standard six-phase voltage and six-phase current output, with 125V per phase voltage and 30A per phase current. Six-phase parallel output can reach 180A. It can test both traditional relays and protection devices, as well as modern microcomputer-based protections, especially providing convenient and perfect testing for transformer differential protection and automatic transfer schemes.

☆、All technical indicators fully comply with the standards of DL/T624-1997 "Technical Conditions for Microcomputer-Based Relay Protection Test Equipment" issued by the Ministry of Electric Power.

☆、Classic Windows XP operating interface, user-friendly, simple and quick to operate; high-performance embedded industrial control computer and 8.4-inch TFT true-color display with 800×600 resolution provide rich and intuitive information, including the current working status of the device and various help information.

☆、The built-in Windows XP system has a recovery function to avoid system crashes caused by illegal shutdowns or misoperations.

☆、Equipped with an ultra-thin industrial keyboard and optical mouse, allowing operations to be performed via keyboard or mouse just like a regular PC.

☆、The main control board uses a DSP+FPGA structure with 16-bit DAC output, generating a high-density sine wave of 2000 points per cycle for the fundamental wave, greatly improving waveform quality and test set accuracy.

☆、The power amplifier uses a high-fidelity linear amplifier, ensuring both the accuracy of small currents and the stability of large currents.

☆、Uses USB interface to communicate directly with a PC, no additional cables needed, convenient to use.

☆、Can be connected to a laptop (optional) for operation. The laptop and industrial computer use the same software, no need to relearn operation methods.

☆、GPS synchronization test function. The device can have a built-in GPS synchronization card (optional) connected to the PC via RS232 port, enabling synchronous testing between two test sets at different locations.

☆、Comes with an independent dedicated DC auxiliary voltage source output, with output voltages of 110V (1A) and 220V (0.6A), for use with relays or protection devices that require DC working power.

☆、Software self-calibration function avoids the need to open the chassis and adjust potentiometers for calibration, greatly improving accuracy stability.

Technical Parameters

☆、AC Current Source  

      Single-phase current output (RMS) 0 - 30A/phase, accuracy: 0.2%  ±5mA

      Six-phase parallel output (RMS)    0 - 180A/six-phase, in-phase parallel output

      Continuous allowable operating value per phase (RMS)  10A

      Maximum output power per phase  320VA

      Six-phase parallel current maximum output power  1000VA

      Maximum allowable operating time for six-phase parallel current  10s

      Frequency range  0 - 1000Hz, accuracy 0.01Hz

      Harmonic orders  2 - 20

      Phase: 0 - 360°, accuracy 0.1°

☆、DC Current Source

      DC current output  0--±20A/phase, accuracy: 0.2%  ±5mA

☆、AC Voltage Source

      Phase voltage output (RMS) 0--125V/phase, accuracy: 0.2%  ±5mV

      Line voltage output (RMS) 0--250V

      Phase voltage/line voltage output power 75VA/100VA

      Frequency range 0 - 1000Hz, accuracy 0.01Hz

      Harmonic orders 2 - 20

      Phase 0 - 360°, accuracy 0.1°

☆、DC Voltage Source

      Phase voltage output amplitude: 0--±150V, accuracy: 0.2%  ±5mV

      Line voltage output amplitude: 0--±300V

      Phase voltage/line voltage output power: 90VA/180VA

☆、Switch Terminals

      Switch input terminals: 8 pairs

      Dry contact: 1--20mA, 24V powered output from device

      Potential flip: Passive contact: low-resistance short signal   Active contact: 0-250V DC

      Switch output terminals: 4 pairs, dry contact, breaking capacity: 110V/2A, 220V/1A

☆、Others

      Time range: 1ms--9999s, measurement accuracy: 1ms

      Dimensions and weight: 570 (mm)×250 (mm)×580 (mm), approx. 32Kg

      Power supply: AC220V±10%, 50Hz, 10A