469-P5-HI-A20-E

About the 469-P5-HI-A20-E

The 469-P5-HI-A20-E is a Motor Protection Relay within the General Electric Multilin 469 series and is capable of monitoring, controlling, and safeguarding medium and large motors. 

All units in the 469 series (unlike in the 369 series) are equipped with metering functions, allowing users to track system variables such as voltage, demand, and frequency. This data can be displayed on the enhanced 40-character LCD or viewed in the EnerVista 469 software program. The RS232 port and RS485 ports can both establish connections between the relay and a computer running the EnerVista software program.

Motor protection features include torque protection, overtemperature protection, stator differential protection, and undervoltage & overvoltage protection. The relay is able to intervene when it detects negative states within the relay, quickly appraising the severity and tripping the system or employing another solution when necessary (rapid motor restarts, etc.) These methods help to reduce overall downtime of the motor system and promote longevity in regard to motor life.

The data logging feature allows the user to select parameters to measure and the interval at which it should be measured. These parameters can be trended and graphed at intervals ranging from one second to one hour. Some of these parameters include motor load, power factor, torque, hottest RTD, and peak apparent power. Data logging allows for greater user insight, increasing knowledge of the overall motor system. In the long-term, this decreases troubleshooting time and enables users to make better adjustments to the setpoint configuration.