The LDJB-1200 6 Phases Relay&Protection Tester is developed by Wuhan Longdian Electrical Equipment Co., Ltd. It is a high-performance, multi-functional portable testing device designed specifically for the debugging and calibration of various relay protection devices. The instrument is equipped with a high-performance industrial computer, Windows XP operating system, 10.4-inch LED touch screen, and optimized keyboard, allowing for convenient operation without the need for external devices. Its core hardware includes DSP digital signal processing system, high-precision D/A and A/D conversion module, linear power amplifier, etc. It supports independent or parallel output of 6-phase voltage (120V per phase) and 6-phase current (30A per phase) (maximum 6-phase parallel current of 180A), and can accurately simulate complex power fault scenarios such as harmonic superposition and transient waveforms. In addition, the instrument provides 8 switch inputs, 4 switch outputs, and an independent DC power supply (± 110V) to meet diverse testing needs. Through interfaces such as USB and Ethernet, users can easily complete data communication, software upgrades, and multi machine control, suitable for on-site testing of power systems and high-precision calibration in laboratories.
| AC current source (6 * 30a) | |
| Single phase current output (RMS) | 0 -- 30A / phase, accuracy: 0.2% ± 5mA |
| six phase parallel output (RMS) | 0 -- 180a / 6 same phase parallel output |
| Allowable working value of phase current for a long time (effective value) | 9.9A |
| Maximum output power per phase | 320VA |
| Maximum output power of six phase parallel current | 1800VA |
| Six and the maximum output current allowed working time | 5s |
| frequency range | 0 -- 1000Hz, accuracy 0.01Hz |
| Harmonic number | 2--20second |
| phase | 0--360The accuracy is 0.1 degree |
| DC current source | |
| DC current output | 0--± 10A / phase, accuracy: 0.5% ± 5mA |
| AC voltage source | |
| Single phase voltage output (RMS) | 0 -- 120V / phase, accuracy: 0.2% ± 5mv |
| Line voltage output (RMS) | 0--240V |
| Phase voltage / line voltage output power | 75VA/100VA |
| frequency range | 0 -- 1000Hz, accuracy: 0.01Hz |
| Harmonic number | 2--20second |
| phase | 0--360Degree, accuracy: 0.1 degree |
| DC voltage source | |
| Single phase voltage output amplitude | 0--± 160V, accuracy: 0.5% ± 5mv |
| Output amplitude of line voltage | 0--±320V |
| Phase voltage / line voltage output power | 90VA/180VA |
| switching value terminal | |
| Switch input terminal | 8yes |
| Air contact | 1 -- 20 mA, 24 V, internal active output of the device |
| Potential reversal | Passive contact: low impedance short-circuit signal Active contact: 0-250V DC/AC |
| Switch output terminal | 4 pairs, empty contacts, interruption capacity: DC: 0-30V/5A, AC:0-250V/5A |
| others | |
| time frame | 1ms -- 9999s, measuring accuracy: 1ms |
| Volume and weight of single machine | Volume 390 x 290 x 170mm3, about 15.5kg |
| Power Supply | AC220V±10%，50/60Hz，10A |
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
Multiphase high-precision output: supports 6-phase voltage (0-120V/phase) and 6-phase current (0-30A/phase), with a parallel connection of up to 180A and an accuracy of up to 0.2%. The frequency range is 0-1000Hz, meeting the testing requirements of complex protection devices.
Intelligent control and display: Built in industrial computer and Windows system, 10.4-inch touch screen+industrial keyboard, intuitive and convenient operation; DSP+FPGA hardware waveform generation technology ensures high-frequency accuracy and stability of output waveforms.
Multiple safety protections: The power amplifier is equipped with overheat, overcurrent, overvoltage, and short-circuit protection. The current circuit allows for open circuit, and the voltage circuit automatically alarms for short circuit. The hardware time limited circuit ensures the safety of high current output.
Rich interfaces and expandability: Provides USB, Ethernet ports (optional), switch input/output terminals, and independent DC power supply, supporting external device control, data access, and multi machine joint control, with strong expandability.
Portability and reliability: Compact design (380 × 157 × 267mm), lightweight body (about 15kg), equipped with self restoring CF card, strong anti-interference ability, suitable for on-site and laboratory environments.
User friendly design: The panel displays real-time output waveforms and parameters, LED indicator lights indicate working status, light/heavy load switching function extends the duration of high current output, and the test process is highly automated.
