01140nam a22002651i 450099100300896970753620040510151857.0040624s1971 xxua||||||||||||||||eng b13010979-39ule_instARCHE-096865ExLDip.to Beni CulturaliitaA.t.i. Arché s.c.r.l. Pandora Sicilia s.r.l.938.5Frantz, Alison167121The church of the holy apostles /by Alison FrantzPrinceton :The american school of classical studies at Athens,1971XII, 44 p., [41] p. di tav. :ill. ;31 cmThe athenian Agora : results of excavations conducted by The american school of classical studies at Athens ;20ArchitetturaChieseAteneSec. 1.AteneSanti Apostoli.b1301097902-04-1412-07-04991003008969707536LE001 AR IX 15/1612001000128365le001C. 1-E0.00-l- 00000.i1362252312-07-04Church of the Holy Apostles72923UNISALENTOle00112-07-04ma -engxxu4103524nam 2200757z- 450 991055772650332120220111(CKB)5400000000046059(oapen)https://directory.doabooks.org/handle/20.500.12854/76336(oapen)doab76336(EXLCZ)99540000000004605920202201d2021 |y 0engurmn|---annantxtrdacontentcrdamediacrrdacarrierEnvironmental Compatible Circuit Breaker TechnologiesBasel, SwitzerlandMDPI - Multidisciplinary Digital Publishing Institute20211 online resource (156 p.)3-0365-0384-6 3-0365-0385-4 Recent research and development in the field of high-current circuit breaker technology are devoted to meeting two challenges: the environmental compatibility and new demands on electrical grids caused by the increasing use of renewable energies. Electric arcs in gases or a vacuum are the key component in the technology at present and will play a key role also in future concepts, e.g., for hybrid and fast switching required for high-voltage direct-current (HVDC) transmission systems. In addition, the replacement of the environmentally harmful SF6 in gas breakers and gas-insulated switchgear is an actual issue. This Special Issue comprises eight peer-reviewed papers, which address recent studies of switching arcs and electrical insulation at high and medium voltage. Three papers consider issues of the replacement of the environmentally harmful SF6 by CO2 in high-voltage gas circuit breakers. One paper deals with fast switching in air with relevance for hybrid fault current limiters and hybrid HVDC interrupters. The other four papers illustrate actual research on vacuum current breakers as an additional option for environmentally compatible switchgear; fundamental studies of the vacuum arc ignition, as well as concepts for the use of vacuum arcs for DC interruption.Technology: general issuesbicsscablationair arc plasmacircuit breakerCO2CuFcurrent interruptioncurrent zeroDC circuit breakerdouble breakfast switchgaseous breakdownhybrid dc circuit breakermagnetic fieldmagnetohydrodynamic simulationsoptical absorption spectroscopyoptical diagnosticsoptical emission spectroscopyplasma physicsprestrike characteristicsprestrike gapPTFESF6SF6 alternative gasessolid-state switchstatistical enlargement lawssurface roughnessSwan bandsswitching arcThomson actuatorvacuum arcvacuum arc commutationvacuum arc voltagevacuum circuit breakervacuum interrupterzero-crossingTechnology: general issuesUhrlandt Dirkedt1309865Uhrlandt DirkothBOOK9910557726503321Environmental Compatible Circuit Breaker Technologies3029678UNINA