To further standardize the operational order at high-voltage power testing sites, strengthen the safety management of instrument power usage, strictly implement industry standards such as the "Power Safety Work Regulations" and "High-Voltage Laboratory Safety Specifications," effectively prevent safety risks like electric shock during high-voltage testing, equipment breakdown, and residual voltage discharge, and comprehensively enhance the standardization, regulation, and safety levels of power testing operations, the power testing sector has recently intensified efforts in equipment safety control and regulation implementation. Guided by systems and measured by standards, it is committed to building a robust safety defense line for power testing operations.

High-voltage power testing is a core and critical component in the operation and maintenance of power grids, hydropower stations, pumped storage facilities, renewable energy power stations, and the construction of power transmission and transformation projects. Precision testing instruments such as series resonance withstand voltage equipment, power quality analyzers, current transformer testers, and relay protection testers serve as essential technical tools for ensuring accurate test data and controllable equipment conditions. The standardized use and operation of these instruments are directly linked to the personal safety of test personnel and the overall safety and stability of the construction site.

In accordance with current national and industry regulations and standards, on-site operations for power testing equipment strictly adhere to standardized procedures, comprehensively reinforcing safety control measures. Before commencing work, personnel must thoroughly inspect the power supply lines, insulated casings, grounding devices, and the intact condition of power cables to eliminate hazards such as aging, damage, or loose connections. They must strictly separate low-voltage power circuits from high-voltage test circuits, ensuring zoned layout and physical isolation, prohibiting any mixed or incorrect connections. Additionally, safety barriers and warning signs must be properly installed to clearly demarcate high-voltage hazardous work zones, with a dedicated supervision system implemented to achieve a standardized "one operator, one supervisor" operational model.

During the equipment power usage and testing operations, strictly adhere to the procedural requirements, standardizing the entire process of equipment grounding, voltage boosting, testing, voltage reduction, and discharge. All testing equipment must be reliably grounded, ensuring the grounding resistance complies with industry standards. The voltage-boosting process should proceed step-by-step and smoothly, prohibiting unauthorized voltage escalation or out-of-range testing. Throughout the testing operation, continuously monitor the equipment's operational status and test data in real time, promptly identifying and addressing any abnormal risks. After the test, strictly follow the procedures of step-by-step voltage reduction, power disconnection, static placement, and thorough discharge. Multiple verification and discharge tests must be conducted on the high-voltage components of the testing equipment and samples. Only after confirming no residual voltage remains can the wiring be disconnected and the site vacated, eliminating the risk of residual voltage injury from the source.