Power system testing is a crucial process in ensuring the reliability, safety, and efficiency of electrical power systems. It involves a series of diagnostic procedures to assess the performance of electrical components such as transformers, circuit breakers, generators, and transmission lines. The testing process includes checking for proper voltage levels, current flow, insulation resistance, and overall system stability. It helps to identify potential issues such as faults, overloads, or inefficiencies that could lead to power outages or equipment damage. Regular power system testing is essential for preventive maintenance, ensuring compliance with industry standards, and extending the lifespan of electrical infrastructure. By conducting thorough testing, electrical engineers can mitigate risks, improve system performance, and ensure the safe and continuous delivery of power.