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Type designation: STS 30summation current transformer for 3 identical Prim. transformers with low powerPrimary transformer ratio 1:1:1Class 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 /2010Application conditions: 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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