1. Multiphase high-precision output capability

Six phase independent output: It can simultaneously output six phase current (0-100A) and six phase voltage (0-120V), simulating multiphase fault scenarios in complex power systems (such as three-phase unbalance, differential protection, busbar protection, etc.).

High precision and resolution: The current and voltage output accuracy reaches ± 0.1%, and the resolution is ≤ 0.001A/0.001V, meeting the high-precision requirements of relay protection devices for signals.

Broadband range: Supports power frequency (50/60Hz) to harmonics (up to 50th harmonic superposition), and can test the operating characteristics of protection devices under harmonic interference.

2. Advanced hardware architecture

DSP+FPGA dual core control: using digital signal processor (DSP) and field programmable gate array (FPGA) to work together to achieve high-speed signal generation and real-time closed-loop control, with a response time of less than 1ms.

Modular design: supports flexible expansion of current and voltage channels, and can be upgraded to more output phases or higher power.

Efficient cooling system: Built in intelligent temperature control fan and heat sink, ensuring stability during long-term full load operation.

3. Intelligent software functions

Automatic testing template: Built in national standard (GB/T) and international standard (IEC) testing templates, such as distance protection, overcurrent protection, reclosing, etc., support one click automatic completion of testing.

Custom programming: Users can write complex test logic through graphical interfaces or scripting languages (such as Python) to simulate special operating conditions such as oscillation, fault recording, and frequency slip.

Real time data recording and analysis: Record the current and voltage waveforms during the testing process, support fault recording playback and vector graph analysis, and quickly locate the cause of protection device misoperation or refusal to operate.

4. User friendly human-computer interaction

Touch screen operation: Equipped with a 7-inch or larger color touch screen, supporting drag and drop parameter settings and waveform visualization adjustments.

Remote control: Connect PC software through Ethernet, USB, or Wi Fi to achieve remote control and data synchronization, suitable for integration of automated testing systems.

Multi language support: Provides interfaces in multiple languages such as Chinese and English to meet the needs of users in different regions.

5. Wide compatibility and communication protocols

Device compatibility: Supports testing electromagnetic, digital, and microcomputer protection devices, compatible with mainstream brands at home and abroad (such as ABB, Siemens, NARI, Sifang, etc.).

Communication protocol integration: Supports protocols such as IEC 61850 (GOOSE/SV), Modbus, DNP3.0, etc., and can directly interact with intelligent substation equipment to verify protection logic and communication integration.

6. Security protection and anti-interference design

Multiple protection mechanisms: equipped with overcurrent, overvoltage, overheating, and short-circuit protection functions, automatically cutting off abnormal outputs to ensure equipment and personnel safety.

Electromagnetic compatibility (EMC): Complies with IEC 61000-4 standard, has strong anti-interference ability, and can work stably in strong electromagnetic environments.

Insulation and grounding protection: Adopting a dual insulation design, the shell is reliably grounded to prevent the risk of leakage during testing.

7. Synchronization and extension functions

GPS/IRIG-B synchronization: Supports external clock synchronization (accuracy ± 1 μ s), enabling synchronous testing of multiple testers or PMU devices, suitable for wide area protection system verification.

External signal triggering: External fault signals can be received through hard wiring or optical fibers to simulate the linkage response of the actual system.

8. Portability and environmental adaptability

Compact and lightweight: Equipped with an aluminum alloy shell, weighing ≤ 15kg, the portable design is easy to move and test on site.

Wide temperature working range: Suitable for environmental temperatures ranging from -10 ℃ to 50 ℃, meeting the requirements of harsh working conditions both indoors and outdoors.

Huazheng Electric HZJB-1200 6 Phase Relay Protection Tester