TDN1101M-22

The TDN1101M-22 device is a combination of a three-phase on-load tap changer placed inside a Solid State Logic circuit. It is designed to work in static-transfer applications and works with utility reversers to switch between various sources of power in order to maintain proper operation and balance. Aside from its two main components, the TDN1101M-22 also incorporates certain additional hardware such as a bypass contactor, current transformer, voltage regulation, and additional external controls. The device can be used in a variety of commercial and industrial applications.

The primary purpose of the TDN1101M-22 is to act as a one-way switch between two power sources. The source of power is determined by the voltage applied to the device and the configuration of the switches. When one supply is higher in voltage than the other, the source that has the higher voltage is chosen as the main source and the other as the backup. When both supplies are the same in regards to voltage, then the source with the higher frequency is chosen as the main supply.

The logic control circuit, which is the secondary component of the TDN1101M-22, is responsible for controlling the switching operation of the three-phase on-load tap changer. It takes commands from both local and remote switches and converts them into switching commands for the changer. The logic control circuit will then measure the voltage and frequency of the incoming power sources and will activate the necessary tap changer lines in order to maintain the correct balance in the system. The logic circuit also provides overload protection by initiating an automatic switchover to the backup supply if either of the two main sources are overloading.

The TDN1101M-22 is designed to provide a safe and efficient way to switch between utility sources of power in order to provide continuous and reliable operation for various commercial and industrial applications. The device offers a simple, yet reliable solution for those who are looking for an economical way to switch between utility sources. The combination of the three-phase on-load tap changer and the logic control circuit ensures an efficient operation that can stand up to any sort of power system configuration.