Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
ABB REL650-REL670 protection XRIO Problem (OMICRON)
- Thread starter rayas91
- Start date
davidbeach
Electrical
But why? The relay settings are immaterial to the test set. The test set needs to provide a number of test cases based on the location where the relay is installed, and the relay needs to produce trips (or not) in appropriate times. There is absolutely no reason or need for the test set to have any knowledge of the actual relay settings. The whole point of the testing is to insure that the relay will trip with an appropriate delay for a set of test cases. Who ever prepares those test cases should have access to the system model and the setting criteria but doesn't need to know, nor should really know, what the actual settings are.
If the setting criteria include a zone 1 trip at 85% of the line, it should be sufficient to know that the relay trips zone 1 at 80% of the line and trips zone 2 at 90% of the line.
If you look at just below and just above the zone 1 setting, as set, and read that out of the relay and then use those as test values you might as well stay home, you've not done anything of any lasting use.
If the relay is actually set with zone 1 at 120% of the line, the 90% trip that turns out to be zone 1 will be a clear red flag, but if you read the settings in use test values based on those all you'll do is prove that the relay trips at (say) 121% of the line and doesn't trip at 119% of the line without ever making note that the set point is ridiculously wrong.
Test sets should never, never, ever know what the actual relay settings are.
If the setting criteria include a zone 1 trip at 85% of the line, it should be sufficient to know that the relay trips zone 1 at 80% of the line and trips zone 2 at 90% of the line.
If you look at just below and just above the zone 1 setting, as set, and read that out of the relay and then use those as test values you might as well stay home, you've not done anything of any lasting use.
If the relay is actually set with zone 1 at 120% of the line, the 90% trip that turns out to be zone 1 will be a clear red flag, but if you read the settings in use test values based on those all you'll do is prove that the relay trips at (say) 121% of the line and doesn't trip at 119% of the line without ever making note that the set point is ridiculously wrong.
Test sets should never, never, ever know what the actual relay settings are.
- Thread starter
- #4
DTR2011 I have got PTL file...When I import settings , The parameters are not imported.I wıll check again for filter on website.
davidbeach I think you didnt get what I mean
... I do this job for 3 years..I did this many time for Alstom Micom,SIEMENS, Schnedier Sepam,GE,SEL.....But for ABB i coulndt import,
It s not about settings, I can test relay without test set.
Thanks for your time.
davidbeach I think you didnt get what I mean
... I do this job for 3 years..I did this many time for Alstom Micom,SIEMENS, Schnedier Sepam,GE,SEL.....But for ABB i coulndt import, It s not about settings, I can test relay without test set.
Thanks for your time.
- Status
Similar threads
- Question
- Locked
- Question
- Question