Product Introduction

The LDJB-702A Three-phase Relay Protection Tester can be used to calibrate various relays (such as current, voltage, inverse-time, power direction, impedance, differential, low frequency, phase coincidence, frequency, DC, intermediate, time, etc.) and microcomputer protection, and can simulate various complex transient and switching faults for comprehensive testing.

Product Synonyms: Microcomputer Relay Protection Tester, Microcomputer Relay Protection Instrument, Relay Protection Tester, Three-Phase Relay Protection Tester, Relay Protection Tester, Three-Phase Relay Protection Tester, Three-Phase Relay Protection Verifier, Relay Protection Verifier, Three-Phase Relay Protection Verifier, Relay Instrument, Relay Protection Device Tester

Product Features

● Intelligent Mainframe - Equipped with a high-speed, high-performance digital signal processor, offering fast computation and wide bandwidth transmission. The software employs double-precision algorithms to generate high-precision waveforms for any phase. The integrated structure ensures tight integration of components, short data transmission distance, and compact design.

● Standalone Operation - The unit operates independently via a user-friendly rotary mouse through a large LCD screen with full Chinese display. It can complete most on-site testing and calibration tasks, and can calibrate various relays (such as current, voltage, inverse-time, power direction, impedance, differential, low-frequency, synchronous, frequency, DC, intermediate, time, etc.) and microcomputer protection. It can also simulate various complex transient and switching faults for comprehensive testing.

● Connect to computers for operation. With the complete set of Chinese operation software on Windows platforms, it allows for various large-scale, complex, and highly automated verification tasks. It enables easy testing and scanning of various protective setpoints, real-time storage of test data, display of vector graphics, drawing fault waveforms, and online printing of reports, etc.

● Large Screen LCD Display: The unit features a large, high-resolution graphic LCD display. All operations are set on the display screen, with both the operation interface and test results displayed in Chinese for clear and intuitive viewing.

● "Dummy-proof" operation with the advanced "rotary mouse" controller significantly simplifies the structure of the operation part, making it easy and quick to operate, and easy to master.

● New High-Fidelity Amplifier - The output stage employs a new, high-power modular high-fidelity amplifier component, which can function as both a current and voltage output. It boasts high output power, excellent precision, and superior reliability.

● Direct current and voltage output; phase voltage and current use DC power amplifier output method, capable of directly outputting AC voltage, AC current, DC voltage, and DC current; adjustable in angle and frequency; can superimpose 1-20 harmonics.

● Self-protection: Equipped with a reasonably designed heat dissipation structure, reliable and comprehensive protection measures, soft power start, and certain fault self-diagnosis and locking functions.

● Features an independent dedicated DC power output; the device is equipped with a dedicated DC power output of either 110V or 220V.

● Rich in contacts - featuring 8 input contacts and 4 open contact outputs. Input contacts are compatible with open contacts and 0-250V potential contacts, capable of intelligent automatic identification.

● Integrated single machine structure with AC 220V power supply. Compact, lightweight, easy to carry, and convenient for mobile testing.

High cost-performance ratio; a cross-disciplinary joint design product, integrating advanced scientific and technological achievements from multiple fields. Combines the performance of large-scale testing instruments with the price of small-scale testing instruments, offering an excellent performance-to-price ratio.