What is the criteria for determining whether you need self contained metalclad swithgear at the 208/120VAC level or just go with separate individual indoor AC breaker panels...For example from a 13.2kv:208V transformer feed to a control building at a substation.
We have a situation on some of our older 115KV:13.2KV substations where we are still using flying grounds in lieu of higher rated circuit switchers between our station transformers and our 115KV T-lines. Does anyone know the concept behind this original design and why it would be justifiable to...
Does anyone know how to calculate the ferroresonance between a three phase 115KV 52.5 MVAR capacitor bank and a 115KV:23KV transformer that is lightly loaded?
Yes, the following two sources will give you simple formulas you can use to calculate the inductance and current you will see based on a selected inrush current:
(1)UNITED STATES DEPARTMENT OF AGRICULTURE
Rural Utilities Service
RUS BULLETIN 1724E-300
(2)IEEE Std C37.012™-2005 IEEE...
