PV71L22-21SY

PV71L22-21SY is a type of ultrahigh voltage protectors, mainly used to protect the electrical system from operating overload and short circuit conditions. This device has been widely used in a variety of applications, such as power converters, instrumentation, and industrial equipment. In this article, the application field and working principle of PV71L22-21SY will be discussed in detail. The application field of PV71L22-21SY includes but is not limited to aerospace, automobile, medical equipment, railway, aviation, and electric power systems. As a high-end voltage protector, this device provides high level of protection for the small electronic components and equipment from severe operating overload or short circuit conditions. It is designed with a high breaking capacity and a current limiting capability, which can effectively reduce the short circuit damage and protect the system from the risk of failure. The working principle of PV71L22-21SY is based on the principle of reverse current protection. When a SMD electronic device connected to the protector is operated under an overload or short-circuit condition, the protective element, which is an electromagnet, is energized and adjusts the clearance of interrupter contacts. This results in the formation of a current path which opposes the current from the overload/short-circuit source, thus limiting the current and isolation of the protected device from the power circuit. The protection principle is based on the selection of current limiting device with the proper voltage rating, current rating, and time delay. To ensure the best performance of this voltage protector, the correct voltage and current ratings must be selected according to the application conditions. It is also essential to properly install the protector to avoid additional installation faults which may lead to further device failure.In conclusion, PV71L22-21SY is an ultrahigh voltage protector which is widely used in various applications to protect the connected electronic devices from severe overload and short circuit conditions. It works on the principle of reverse current protection and must be installed correctly to ensure the best performance.