About the 745-W2-P1-G1-HI-A-L-R-E
The 745-W2-P1-G1-HI-A-L-R-E is a 745 Transformer Protection System from GE Multilin. The 745-W2-P1-G1-HI-A-L-R-E is designed to protect and control small, medium, and large power transformers, reactors, and autotransformers. This relay is a three-phase, two winding system that can be used for primary or backup protection.
There are a number of protective features that the 745-W2-P1-G1-HI-A-L-R-E has. Some of these features are:
- Percent differential protection
- Overcurrent protection
- Overexcitation protection
- Under/overfrequency protection
There are two types of overcurrent protection: instantaneous overcurrent (IOC) elements and time overcurrent (TOC) protection elements. The IOC can clear severe internal and external faults. The TOC allows coordination to adjacent protection zones and is a backup protection element.
The 745-W2-P1-G1-HI-A-L-R-E also has metering and monitoring functions. The relay provides accurate measurements of multiple types of currents. The built in metering system eliminates the needs for an auxiliary metering device. There are also asset monitoring and event recording features. The last 128 events on the relay are recorded, which provides operators with the date, time, cause, and system parameters of each event.
