The LDJB-702 3 Phases Relay&Protection Tester is designed specifically for testing and verifying relay protection devices in power systems. This tester adopts advanced 0.2 level microcontroller technology, which has the characteristics of high precision, multifunctionality, and easy operation. The equipment supports standard 4-phase voltage and 3-phase current output, which can simulate various complex power system faults and fully meet the testing requirements of relay protection devices. Not only does it provide a standalone operation mode for quick on-site testing, but it also supports external PC operation to achieve more complex and automated verification work. Built in multiple testing modules, including AC test, DC test, synchronous low cycle test, whole group test, etc., covering almost all testing items of relay protection devices. In addition, the tester also has rich switch contacts, self-protection functions, and independent dedicated DC power output, ensuring safety and reliability during the testing process.
| AC current output | |
| Phase current output (effective value) | 0~40A |
| Output Precision | 0.2 degree |
| 3 phase parallel current output (effective value) | 0~120A |
| A Long-time Phase current | 10A |
| Maximum output power of Phase current | 450VA |
| Maximum output power of 3 parallel current | 900VA |
| Maximum Permitted work time of 3 parallel current | 10S |
| Frequency range ( fundamental) | 0~1000Hz |
| Harmonic time | 0~20 |
| DC current output> | |
| Current output | 0～±10A / phase, 0～±30A / 3 parallel |
| Output Precision | 0.5 degree |
| AC voltage output | |
| Phase voltage output (effective value) | 0~120V |
| Output Precision | 0.2 degre |
| Line voltage output (effective value) | 0~240V |
| Phase voltage / Line phase output power | 80VA / 100VA |
| Frequency range (fundamental) | 0~1000Hz |
| Harmonic time | 0~20 |
| DC voltage output | |
| Phase voltage output range | 0～±160V |
| Output Precision | 0.5 degree |
| Line voltage output range | 0～±320V |
| Phase voltage / Line phase output power | 70VA / 140VA |
| 10 path digital input and 8 path digital output | |
| Time measuring range | 0.1ms ～ 9999s |
| accuracy of measurement | ＜0.1ms |
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. 2. To learn more about Longdian products, please enter the product center. Service Hotline: 400-6727-238
High precision output: With standard 4-phase voltage and 3-phase current output capabilities, each phase voltage can output up to 120V, and the current can output up to 120A, ensuring the accuracy and reliability of test results. The output accuracy reaches 0.2 level, meeting the requirements of high-precision testing.
Multi functional testing module: This tester is equipped with various testing modules, including AC test, DC test, synchronous low cycle test, whole group test, power direction and impedance test, differential test, harmonic superposition test, frequency and high low cycle test, etc. It covers almost all testing items of relay protection devices and meets the testing needs of different types of protection devices.
Dual operation mode: supports both standalone operation and connected computer operation modes. Single machine operation is convenient and flexible, all displayed in Chinese, operated through a large LCD screen and a rotating mouse; Connecting to a computer allows for more complex and automated verification work through the full set of Chinese operating software on the Windows platform.
Rich switch contacts: The tester provides 8 contact inputs and 4 pairs of null contact outputs. The input contacts are compatible with null contacts and 0-250V potential contacts, with intelligent automatic recognition to meet the needs of complex testing scenarios.
Self protection function: The device adopts a reasonably designed heat dissipation structure, with reliable and complete multiple protection measures and power soft start function, and has certain fault self diagnosis and locking functions to ensure safety during the testing process.
High cost-effectiveness: The tester is a cross disciplinary joint design product that integrates advanced technological achievements from multiple disciplines, combining the performance of large testers with the price of small testers, and has a high cost-effectiveness.
Independent dedicated DC power output: The tester is equipped with one 110V and 220V dedicated adjustable DC power output, which can be used as an auxiliary power supply for on-site testing to meet the needs of various testing scenarios.
Intelligent test guidance: The equipment provides detailed test guidance, and users can intuitively understand the test steps and parameter setting methods through the operation interface, reducing the difficulty of operation and improving testing efficiency.
