An Second-Hand Characteristic Tester

Direct Current Circuit Breaker Amperage-Time Characteristic Tester Product Introduction

As the rapid growth in electricity demand highlights the crucial role of direct current (DC) power systems in grid safety, the accuracy and reliability of the operation characteristics of DC circuit breakers, as key protective devices, are vital for the stable operation of the entire DC system. However, in actual operation, due to equipment aging, environmental factors, and incorrect configuration, the operation characteristics of DC circuit breakers may change, potentially leading to safety incidents such as overstep tripping.

To address this issue, State Grid Corporation has clearly specified the operational characteristics of DC protective devices and emphasized the importance of conducting safety and timing tests on newly installed and operating equipment. Safety and timing tests can evaluate the tripping time of circuit breakers under different short-circuit currents, thereby determining if their operational characteristics meet the requirements and if the coordination between upper and lower-level circuit breakers is reasonable.

However, traditional safety second characteristic test equipment is large and heavy, making it inconvenient for on-site inspections at substations and similar locations. Additionally, the conventional testing methods require complex wiring and conventional instruments, resulting in cumbersome operations and low efficiency.

To address this issue, we have launched the Direct Current Circuit Breaker Time-Current Characteristic Tester. This tester features the following:

High portability: Compact and lightweight, easy for mobile inspections at sites like substation.

High Automation: Built-in high current power supply and load resistor, no need for external equipment, simplifying the testing process.

User-Friendly Operation: Equipped with a touch screen interface, it is intuitive and easy to understand, allowing operators to start using it without professional training.

High Precision Testing: Utilizes advanced measurement technology to accurately measure the trip time and operating current of circuit breakers.

FeatureAll.SurfaceOur products not only undergo safety and reliability tests but also include overcurrent and short-circuit characteristics testing for circuit breakers.

In summary, the DC circuit breaker amp-second characteristic tester is a highly efficient, portable, and easy-to-operate testing device specifically designed for substation field use. It accurately evaluates the operational characteristics of DC circuit breakers, providing robust technical support to the operation and maintenance department, enhancing the reliability of DC systems, and ensuring the safe and stable operation of the power grid.