As is well known, a frequency converter is a power control device that uses the switching operation of power semiconductor components to convert a fixed-frequency AC power supply into electrical energy at a different frequency. Since frequency converters often operate in complex environments—affected by factors such as temperature, humidity, vibration, or performance drift over time—their characteristics may change, potentially leading to various malfunctions. If operated incorrectly or maintained inadequately, operational failures can occur, preventing the converter from functioning normally and even causing premature damage, thereby disrupting the normal operation of production equipment.

The quality of a frequency converter is directly tied to the quality of its application. The environment in which it is manufactured, along with the safety protocols and quality control systems of the producing company, fundamentally determine the reliability of the product. Nanjing Oulu Electric has long prioritized these critical aspects.

On September 5, 2019, Oulu Electric participated in a comprehensive emergency rescue drill organized in the Liuhe District of Nanjing. Government officials from the urban district attended and observed the exercise. At 9:30 AM, a simulated scenario unfolded in which a building’s machining workshop experienced a compressed air leak on the first floor—caused by delayed maintenance and inadequate cleaning—leading to an “explosion” and “fire.” Employees immediately reported the incident and initiated an evacuation. The onsite commander promptly notified company leadership, triggering a Level-1 emergency response. The entire process was carried out in an orderly manner, and the situation was effectively brought under control. The drill was highly commended by all attendees.

       The EV510A series frequency converters produced by Oulu Electric were designed with comprehensive consideration of various potential safety risks during application, which is why they have achieved excellent quality and maintained a strong reputation. A secure frequency converter must originate from a safety-certified factory.