REF620 Directional Overcurrent Relay Testing | DPHLPOC1 Module | Step-by-Step Guide

🔧 REF620 Directional Overcurrent Relay Testing | DPHLPOC1 Module | Protection Relay Tutorial

In this video, we demonstrate step-by-step testing procedures for the ABB REF620 directional overcurrent relay with the DPHLPOC1 module. Learn how to verify settings, test directional functionality (67 protection), and ensure accurate tripping for fault conditions.

📌 Topics Covered:
✔️ Introduction to REF620 & DPHLPOC1 directional overcurrent protection
✔️ Relay settings configuration (directional angles, pickup values)
✔️ Testing methodology using a relay test set (Omicron, Megger, etc.)
✔️ Verifying correct operation for forward/reverse faults
✔️ Common challenges & troubleshooting tips
In this video we are going to see Direction Over current relay testing for REF620 relay of DPHLPOC1 block with phase diagram
Direction over current working principle you can see below link
   • DIRECTIONAL OVER CURRENT |  Forward and Re...  
Case 1 Forward Direction over current
Characteristics angle – 45
Max forward angle – 85
Max reverse angle -85
Case 2 Forward Direction over current
Characteristics angle – 45
Max forward angle – 90
Max reverse angle -90
Case 2 Forward Direction over current
Characteristics angle – 20
Max forward angle – 90
Max reverse angle -90
Case 4 Reverse Direction over current
Characteristics angle – 20
Max forward angle – 80
Max reverse angle -80
#RelayTesting #DirectionalOvercurrent #REF620 #DPHLPOC1 #PowerProtection #ElectricalEngineering

I have attached the omicron Test report and Omicron file for your reference you can download
https://drive.google.com/drive/folder...