Testing Siemens 7SD522 POTT Teleprotection Using RelaySimTest & OMICRON CMC

In this video, we perform a complete practical validation of the Siemens 7SD522 POTT (Permissive Overreaching Transfer Trip) teleprotection scheme using OMICRON RelaySimTest and two synchronized CMC test sets. The session starts with a review of the POTT operating principle and communication logic between both line ends. We then walk through the RelaySimTest project configuration, including power system modeling, line parameters, CT/VT settings, relay configuration, binary I/O mapping, and time synchronization using PTP. Several testing scenarios are demonstrated, including normal distance protection time grading, double-infeed and single-infeed faults, arc resistance faults, busbar faults, and teleprotection-assisted tripping. The video also explains how to define assessment criteria, analyze trip times, evaluate send/receive teleprotection signals, and generate professional test reports. This tutorial is intended for protection engineers, commissioning engineers, relay testing specialists, and power system professionals working with Siemens SIPROTEC relays, teleprotection schemes, and OMICRON testing solutions. #siemens #7SD522 #RelaySimTest #omicron #teleprotection #distanceprotection #relaytesting #powersystemprotection #electrical #electricalengineering #protection #electric #POTT 00:00 POTT Teleprotection Principle Overview 02:09 RelaySimTest Project Setup 03:38 Power System and Network Configuration 05:55 Relay and Binary I/O Configuration 07:21 CMC Configuration and Time Synchronization 09:25 Template & Test cases explanation 16:55 Time Grading Tests Without Teleprotection 20:20 POTT Teleprotection Performance Tests 22:44 Single-Infeed and line Fault Scenarios 24:12 Single-Infeed and Busbar Fault Scenarios 27:12 Report Generation and Test Results Review