745-W2-P15-G1-LO-A-R

About the 745-W2-P15-G1-LO-A-R

The 745-W2-P15-G1-LO-A-R is a transformer management relay produced by GE Multilin and protects transformer systems by monitoring and responding to physical and electronic variables, such as harmonics, overexcitation, temperature, and currents. The 745 is able to adapt to shifting conditions within the transformer system, taking necessary steps to alleviate strain. It is able to protect and manage transformer systems small, medium, and large. Users can establish setpoints (analogous to settings) that help determine how the relay manages and protects the system. Setpoints can be easily saved and loaded from file using a computer running EnerVista 745 connected to the device’s RS232 port.

The body of the device itself is divided up into approximately four sections, which includes the display, status indicators, keypad, and RS232 interface. The display is a forty character LCD which is capable of displaying screens needed to assign and edit setpoints. The liquid crystal display also can indicate errors as they emerge, especially in response to incorrect keypad entry. The liquid crystal display can also passively read off different system values when not in active use, and users can edit the relay’s settings to shift what appears during the idle process. In addition to the LCD, a number of LEDs located at the front of the case provide insight into system functionality, indicating if issues such as self-test errors or transformer overloads occur. The keypad can be used to manually adjust setpoints, and the RS232 port can connect computers running the EnerVista 745 software to the 745 relay itself, which allows for quicker and easier programmability.