Hi
Someone here is asking about the conformity of deformed stranded copper ground conductors in a 161kV substation.
I could not find any info, but I guess there could be a problem under fault current. Is there any standard or book that gives a criterion about the acceptability of deformed cable?
Hi guys!
Here is a question for short-circuit study experts.
A small plant is fed by a 750 kVA, Yg-Yg transformer. The utility wont give X/R ratios.
IEEE std C37-010 gives a typical ratio of around 7 for that transformer.
Given that X1/R1 ratio, is there a way to estimate the X0/R0 ratio?
Hi guys
I'm trying to learn more on motor protection. Topic of the moment: single-phasing protection.
I know about standard loss-of-phase and unbalance relays.
My question is: for a lightly loaded motor, say 50% of nominal HP, would a phase loss be dangerous for the motor?
Because of the...
Hi everyone,
Anybody knows where I could find the TCC of a ST-TE3 trip unit (on a ST-TE 600 V, 1 600 A, 50 kA breaker)?
Data collection was made live, so that is all the information I could find...
Hi all,
Anyone knows a good reference that can explain what would happen to fault current and 3rd harmonic levels if the H0 of a Yg-Yg transformer is deconnected?
