thoughts around Breaker Maintenance switch (240kV)
thoughts around Breaker Maintenance switch (240kV)
(OP)
With the design of a single line (240kV) breaker for 6 feeders (34.5kV). I am curious what people's thoughts are around adding a breaker maintenance switch for the breaker's Line protections.
Unecessary? good idea? Old fashioned? inadequate?
-Sn0
Unecessary? good idea? Old fashioned? inadequate?
-Sn0






RE: thoughts around Breaker Maintenance switch (240kV)
RE: thoughts around Breaker Maintenance switch (240kV)
Re-word, please.
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]
RE: thoughts around Breaker Maintenance switch (240kV)
What i am referring to as a "maintenance switch" is no more than a module inside the control building that takes in the status of the breaker and then it gives a "maintenance" logical 1 or 0 to the line protection and breaker control in order to trip block as well as visual aid and lock out for crews working on the line during routine maintenance or during fault conditions. My opinion is that this is being done through the bus or TX lock out relays or even within the settings in most relays. I know some clients are moving away from using this separate module.
RE: thoughts around Breaker Maintenance switch (240kV)
RE: thoughts around Breaker Maintenance switch (240kV)
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]
RE: thoughts around Breaker Maintenance switch (240kV)
RE: thoughts around Breaker Maintenance switch (240kV)
jghrist: This is exactly what i've seen too. Which is why i think adding the redundant switch might be overkill.
crshears: no worries, I can see why. i think this switch is an old fashioned way of doing it in my province.
bacon4life: 100%