The insulation tester C.A 6555 is ideally suited for the insulation testing of devices in production, on-site commissioning, during regular tests or during the re-commissioning of systems in its housing suitable for the building site.The device is especially designed for electricity suppliers, plant manufacturers, installers, maintenance companies, research centers and infrastructure companies.The C.A 6555 meets the IEEE 43 standard. This requires that insulation tests be performed on 12 kV rotating machines with test voltages between 5 and 10 kV.Technical data and functions:Comprehensive measurement range: 10 kΩ to 25 TΩPre-set and adjustable test voltage: 40 V to 15 kVMaximum charging current 5 mALarge, illuminated LCD display with digital display, bar graph and curve graphics R(t)+u(t), i(t), i(u)Automatic calculation of: DAR / PI / DD / DR (ppm/V)Several test methods: Stepped, rampenic test voltage, "Burning" test, "Early Break" test or test with "I-limit"Filter to stabilize the measurement resultsConversion of R to a reference temperatureMemory for 80,000 measured values and real-time clockOptically isolated USB port for data transfer to computer and DataView ® protocol softwarePower supply: NiMH battery with external chargerComplies with IEC 61557 -1 -2INSTALLATION CATEGORY: IEC 61010 1000 V CATDimensions 406 x 330 x 174 mm; weight 6 kg.