Udstyr til lokalisering af isolationsfejl i IT-systemer (IFLS)
Anvendes til hovedstrømkredse
12 målekanaler for tilslutning til måletransformer serierne W…, WR…,WS…
Overvågning af forbindelse og tilslutning til måletransformer
Universelt systemkoncept
ISOSCAN® EDS460/490 i kombination med ISOMETER® IRDH575, eller pulsgeneratoren PGH, er materiel beregnet til automatisk lokalisering af isolationsfejl i IT-systemer, dvs. i isolerede net.
Strømsignalet som anvendes til lokalisering af fejl, genereres af isolationsovervågningen IRDH575, eller af PGH, og registreres af de måletransformere som er tilsluttet lokaliseringsudstyret.
Der kan tilsluttes op til 12 målstrømtransformere pr. EDS460/490. I alt kan der i ét og samme system, tilsluttes op til 90 EDS-lokaliseringsmoduler via RS-485 interface (BMS-protokol). Således kan der automatisk fejllokaliseres på op til 1080 afgående kredse i et og samme IT-system. Den maksimale scanning tid er 10 s, se TGH1394.
Da både person- og driftssikkerhed er af særlig væsentlig betydning ved bl.a. raffinering af olie og gas - både når det drejer sig om offshore og onshore installationer – tilsvarende i forsyninger til medicinske områder gruppe 2 på et sygehus og på hospitaler (fx forsyning til en intensiv stue med mange stikkontakter), og i installationer der kræver en sikker strømforsyning, er det en væsentlig fordel at anvende udstyr til lokalisering af isolationsfejl.
Dette er eksempelvis også tilfældet i datacentre, hvor oppetid er af væsentlig betydning, hvorfor automatisk lokalisering af isolationsfejl er en af de mest optimale løsninger.
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