Six-Phase Microcomputer Relay Protection Tester - Yangzhou Darui Electric Co., Ltd.

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Six-Phase Microcomputer Relay Protection Tester

Published: 2020-08-27 16:56:51

Views: 2922

Category: Microcomputer Relay Protection Tester

Product Description

Six-Phase Microcomputer Relay Protection Tester

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The Six-Phase Microcomputer Relay Protection Tester uses the latest generation of high-speed DSP digital signal processor as the core, adopts dual 12-bit DAC, applies full-fidelity high-performance linear amplifier, with high output accuracy, good waveform, and stable performance.

Development History

The Six-Phase Microcomputer Relay Protection Tester is a new type of intelligent testing instrument. The previous relay protection test tools were mainly composed of voltage regulators and phase shifters, which were bulky and had low accuracy, and could no longer meet the calibration work of modern microcomputer relay protection. With the continuous development of science and technology, microcomputer relay protection has been widely used in line protection, main transformer differential protection, excitation control, and other fields. Comprehensive automation of substations has become the mainstream. Modern microcomputer relay protection testers can be divided into two forms: one uses traditional OCL power amplifiers, which are large in size and weigh about 25Kg, relatively bulky, and the power amplifier tubes operate in the amplification region, which is prone to damage over time, with narrow dynamic range and low accuracy. The other uses switching power supplies and digital power amplifiers, which are small in size, light in weight, and high in efficiency, representing the development direction of relay protection testers. It can test various types of voltage, current, frequency, power, impedance, harmonics, differential, synchronization, and other relays manually or automatically. It can simulate various fault types for distance, zero-sequence protection device setting calibration, and complete group tests of protection devices. It can automatically scan the ratio braking curves of microcomputer and digital transformers and generator-transformer differential protection, and has GPS trigger function. The microcomputer-based relay protection test device is an important testing tool to ensure the safe and reliable operation of the power system. With the rapid development of computer technology, microelectronics technology, and power electronics technology, it is an inevitable trend of technological progress to continuously introduce new high-performance microcomputer relay protection test devices by applying the latest technological achievements. The relay protection test device is an important testing tool to ensure the safe and reliable operation of the power system. With the continuous expansion of the modern power system scale and the increasing requirements for the reliability and efficiency of power system operation and management, the testing work of relay protection personnel has become more frequent and complex. In today's rapid development of computer technology, microelectronics technology, and power electronics technology, it is an inevitable trend of technological progress to continuously introduce new high-performance relay protection testers by applying the latest technological achievements, and it is also our responsibility given by the times. The relay protection tester is a new type of miniaturized microcomputer relay protection tester that fully utilizes modern advanced microelectronics technology and devices, based on the People's Republic of China electric power industry standard "Technical Conditions for Microcomputer-Based Relay Protection Test Devices" (DL/T 624 ─ 1997). It adopts an advanced structure that can operate independently as a single unit or be connected to other computers for operation. The host has a built-in high-performance industrial computer and high-speed digital signal processor, true 16-bit DAC module, new modular high-fidelity high-power amplifier, with built-in TFT true color LCD display and embedded microcomputer keyboard. It can be operated independently as a single unit or connected to a laptop for operation. It has powerful operation functions, small size, and high accuracy. It not only has the superior performance and advanced functions of large testers, but also has the compactness, flexibility, ease of operation, and high reliability of small testers.

Instrument Features

1. Six-phase current and six-phase voltage output simultaneously.

2. Convenient testing of backup auto-switching devices and microcomputer differential protection devices.

3. Can calibrate various relays, protections, and safety automatic devices on site, and simulate various complex transient, permanent, and conversion faults for complete group tests. Can save test data in real time, display vector diagrams, draw various characteristic curves, and print reports online.

4. Uses USB2.0 interface to connect with PC, no need for any conversion cables, easy to use.

Technical Parameters

AC/DC Voltage Source:

Maximum voltage: AC　6×125V ；DC　6×150V

Maximum power: AC 6×75VA ；DC 6×100VA

Resolution: 1mV

Measurement accuracy: 0.2%

Harmonic distortion: ≤0.1%

AC/DC Current Source:

Maximum current: AC　6×30A ；DC　6×30A

Maximum power: AC　6×300VA ；DC　6×300VA

Resolution: 1mA

Measurement accuracy: 0.1%-0.2% ultra-high precision small current

Harmonic distortion: ≤0.1%

Auxiliary Voltage Source:

Output voltage: DC110V/220V

Maximum power: 100W

Time test range:

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