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Typenbezeichnung: STS 21summation current transformer for 2 unequal Prim. transformers with low powerPrim. transformer 1: ....../1 APrim. transformer 2: ...../ 1 A class 1Power 0,2 VAInstallation location: Indoor areaambient temperature: - 5°C ...... + 55 °CRel. humidity: 5%... 85%, no condensationProtection class IP 20Standard: IEC 61010-1; IEC 61010-2-030 /2010Conditions of use: IEC 60044-1/2003Thermal rated short-time current: Ith 60 x In / 1sThermal continuous current 100%Rated insulation level: 0,72/3/-kVRated frequency: 50/60 HzInsulation material class E ( 120 °C )Primary and secondary conductor max. 1,5 mm²

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