A compressor relay (RLA) is a crucial component in the operation of compressors, responsible for starting and protecting these devices. IEEE/IAS/I&CPSD Protection & Coordination WG Chair Jacobs Canada, Calgary, AB rasheek. com IEEE Southern Alberta Section PES/IAS Joint Chapter Technical Seminar - November 2016 Protective Relays - Technical Seminar Nov 2016 - Copyright: IEEE 2 Abstract: Protective relays and devices. Relays associated with motor protection are smart devices crafted to track the operational conditions of motors, identifying potential issues and disconnecting the motor from the power source to prevent further damage. In overload cases, the motor protection relay will interrupt the power supply so. Long term cost reduction (TCO) for trainings and maintenance by reduce variety of relays A fast and selective arc fault mitigation for air-insulated LV & MV switchgear and Relion protection and control relays and sensor technology protect staff and plant facilities for many years. Hey, in this article, we are going to see OLP and Relay Wiring Diagram with Compressor and Connection between them. The primary function of the OLP is to protect the motor from damage. Licensed professional engineer for 15 years. 25 years in the electrical industry including 10 years as a MEP consulting engineer.