ABB隔离开关.docx

Medium Voltage productsIndoor disconnectors OWD and OWIIIContentsIntroduction4Indoor disconnectors type OWD.5Indoor disconnectors 3-poles type OWIII13Manual operating mechanisms type NRWO4-320Motor operating devices type UEMC 40_22Electromagnetic interlock type NO5.34Indoor disconnectors OWD and OWIII 3IntroductionABB indoor disconnectors, type OWD and OWIII are meant for closing and opening electrical circuits in currentless state. In open position, they make a visible and safe isolating gap in the circuit which cuts off the circuit from the side of the power supply. These disconnectors may work in horizontal and vertical position, in one?, two? and three?pole versions depend of apparatus type. ABB offers wide range indoor disconnectors:Rated voltages: 1,2–36 kVRated normal currents: 630–4000 ARated short-time withstand current 1s up to 80 kA4 Indoor disconnectors OWD and OWIIIIndoor disconnectors type OWD1. Operating conditionsThe disconnectors type OWD are to be installed indoors under the following conditions:the ambient temperature rangefor standard model N3: 268 – 313K (?5 , +40°C)for tropical model T3: 268 – 328K (?5 , +55°C)the relative humidityfor standard model N3: 70% at 303K (+30?C)for tropical model T3: 85% at 303K (+30?C)maximum altitude for installation (above sea level): 1000 m.2. Designations and switch typesThe structure of product marking is presented below:OWD310w. 01/1TypeNumberRatedRatedType of operatingofvoltagecurrentmechanism or polepolesdistance (specifiedonly for non-standarddistances)1– one01– 1,2 kVw. 01– 4000 A (N3)1 – with lever for2– two03– 3,6 kV3150 A (T3)coupling with3– three10– 12 kVw. 02– 2500 A (N3)manual operating20– 24 kV2000 A (T3)mechanismw. 03– 2000 A (N3)NRWO4?3 or anw. 04– 1600 Aisolating rod for 1,2(N3, T3)kV disconnectors,2– pneumatic operatingmechanism typeNP8 on the righthand side,3– pneumatic operatingmechanism typeNP8 on the left handside,4– two pneumaticoperatingmechanisms typeNP8,500– pole distance 500 mmlocated o