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Protection Functions

E

EngTips202506

Electrical
Joined
Feb 6, 2025
Messages
2
What are the protection functions displayed in the below image?
1742952748151.png
 
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In my opinion all the symbols except Ursd and df/dt are IEC 60617 protection graphical symbols.
Ursd may be Residual Voltage Relay and df/dt it has to be rate of change ROCOF relay .Protection Symbols IEC-ANSI.jpg
 
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