The iRelay 50-P is CET's elaborately designed Dual and Self Powered Protection Relay for LV, MV and HV power systems featuring compact construction, integrating a 32-bit low-power embedded processor, a 16-bit A/D converter, and a large-capacity high-speed non-volatile memory chip. The iRelay 50-P is CET's elaborately designed Dual and Self Powered Protection Relay for LV, MV and HV power systems featuring compact construction, integrating a 32-bit low-power embedded processor, a 16-bit A/D converter, and a large-capacity high-speed non-volatile memory chip. The iRelay 50-P is CET's elaborately designed Dual and Self Powered Protection Relay for LV, MV and HV power systems featuring compact construction, integrating a 32-bit low-power embedded processor, a 16-bit A/D converter, and a large-capacity high-speed non-volatile memory chip with unlimited. In electrical engineering, a protective relay is a relay device designed to trip a circuit breaker when a fault is detected. : 4 The first protective relays were electromagnetic devices, relying on coils operating on moving parts to provide detection of abnormal operating conditions such as. This device can be installed by the professional personnel only. For any failure caused due to the non-compliance with the instructions in this Manual, we will not bear any responsibility. Thank you for using the product of CET Electric Technology Inc.