desain tripping circuit main protection relays
desain tripping circuit main protection relays
(OP)
What are the advantages and disadvantage using 2 tripping circuits from main protection relays (distance relays, differential relays, etc)to circuit breaker with 2 tripping coils in substation with only 1 DC supply system?
In my company, I find design of tripping circuit main protection relay only connected to 1 tripping coil and another tripping coil is used for back up protection and manual open circuit breaker.
In my company, I find design of tripping circuit main protection relay only connected to 1 tripping coil and another tripping coil is used for back up protection and manual open circuit breaker.






RE: desain tripping circuit main protection relays
RE: desain tripping circuit main protection relays
RE: desain tripping circuit main protection relays
RE: desain tripping circuit main protection relays
-Multiple tripping paths makes testing more complicated. The circuits should be designed so that every trip path can be independently tested.
RE: desain tripping circuit main protection relays
What are concerns if we design trip circuit from main protection to 2 tripping coils?
1. MCB DC supply must enough to supply 6 tripping coil. Using 2 MCBs DC supply to separate supply to TC 1 and TC2 is better.
2. ?????