We are looking at retrofitting a new minimum flow unit of 400kW into an existing hydro plant - in this situation would you use an induction or asynchronus generator and why?
Does anyone have experience with 3" AL pipe bus splitting along its major axis for 1-3'? This is not a welded joint, the installations are outdoor, open air bus supported at 20' spans, no other mechanical loads exist, connectors are bolted-mechanical connections with aluminum bolts which were...
I was at the IEEE T&D conference this week in Chicago. One observation is that much of the new MV utility distribution equipment (reclosers and padmounted switchgear) using vac bottles and encapsulated gear is not maintainable, i.e. you can't check or change the bottles.
Any concerns about...
Any thoughts on what standards you'd apply in performing an arc flash hazard analysis in a utility-owned power plant in the US? NESC rule 410 appears to be applicable to lines and the NEC does not apply to utility owned power plants so I'm not clear if NFPA 70E applies? Thanks in advance for...
Does anyone have experience with FAGET TM2000 CT's? I have a power transformer supplier quoting these CT's in a proposed unit - 70MVA 138kV-26.4kV delta-wye gnd. I'm somewhat concerned with using split-core CT's in a power transformer for protection.
Any feedback on these ct's or on the use...
Has anyone seen an ammeter suitable for high-voltage applications (can be placed with a hot-stick/universal adaptor) which reads not only amps but also displacement power factor? Any help is appreciated!
Question, with rule 410 in the 2007 NESC providing a table for PPE cal/cm^2 ratings based on clearing times and fault current availability has anyone heard if microprocessor based relay manufacturers or IEEE standards will develop a new family of relay curves based on the table? In other words...
Questions were started in previous threads. Can anyone discuss their reclosing scheme for a utility distribution feeder including target reset (manual or automatic upon successful reclose), reclosing open interval timing (how long do you leave the feeder off before attempting reclosing?), how...
