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Protection Relays are commonly used components in electrical control systems, utilized for functions such as circuit switching control and signal transmission. To ensure the normal operation and performance of relays, rigorous testing and inspection are required. In today's ever-evolving power systems, the accuracy and reliability of protection relays are crucial. Protection relay testing is an important step to ensure the safe operation of power systems, and the demands on relay testing equipment are also increasing.
Protection Relay Tester: Measures and analyzes contact resistance, coil resistance, insulation resistance, and operating time of relays to ensure their normal operation.
Power Simulator: In relay testing, power simulators can be used to simulate the power conditions of actual circuits, testing the performance of relays under various working conditions.
Signal Generator: In relay testing, signal generators can simulate signal inputs in actual circuits, testing the relays' response and switching capabilities to different signals.
Load Box: In relay testing, load boxes can simulate working conditions under different loads to test the performance and stability of relays under various load conditions.
High-performance relay testing equipment generally needs to combine high current output with intelligent control.
Relay testing equipment can test various overcurrent relays, including electromechanical, solid-state, and microprocessor-based relays.
Relay testing equipment typically has 4 voltage channels and 6 current channels to meet various testing requirements.
Some high-quality relay testing equipment is also equipped with a brand new smart touch interface, allowing users to easily perform manual tests, quickly save, and download test results without needing to connect to a computer, simplifying the testing process.
Protection relay testing equipment uses a new high-power voltage-current amplifier, capable of continuously providing maximum constant current voltage to the load during testing and automatically adjusting the range. This not only enhances the accuracy of test results but also saves testing time, as there is no need to turn off the output to adjust the range during testing. Additionally, constant power output allows for many high voltage relay tests to be completed without needing to parallel or series current channels.
Protection relay testing equipment can conduct steady-state tests for relay protection through manual control, as well as dynamic tests through computer control, including programmable waveforms of DC offset and harmonics.
The output of protection relay testing equipment is not affected by sudden changes in input voltage or frequency, which increases test accuracy and reduces test time.
Programmable switching inputs and outputs provide real-time sequencing and logic operations for voltage and current output, suitable for complex power system simulations.
The frequency range of the current and voltage channels of protection relay testing equipment ranges from DC to 1kHz, supporting multiple commonly used test frequencies, enhancing the flexibility and versatility of the testing system.
