Siemens SIREMOBIL Iso-C Troubleshooting Manual

Also see for SIREMOBIL Iso-C: Installation instructions Installation and setting instructions Service instructions Installation and setting instructions Service instructions

16 PrerequisitesSIREMOBIL Iso-C SPR2-230.840.01.01.02 © Siemens, 200808.08 CS PS SPPage 16 of 148For internal use onlyNOTE For evaluation purposes, the first measured value and thevalues documented during previous maintenance or safetychecks must be compared to the measured values.A sudden or unexpected increase of the measured valuesmay indicate a safety-relevant defect - even if the limit valueof 0.2 ohms is not exceeded (protective ground wire or con-tacts).Notes on device leakage current measurement 0Follow the instructions in the safety rules for installation and repair (ARTD-002.731.17...).WARNING Electric voltage!Noncompliance can lead to severe injuries and even death.¹ The device leakage current measurements may be per-formed on systems of protection class I only after theprotective conductor test has been passed.First measured valueIn most cases, the first measured value has already been determined and documented inthe device leakage current record.The measurement was performed with the recorded line voltage and line frequency, andwith the measuring equipment recorded.If the local line voltage or line frequency deviates from the line voltage or line frequencydocumented in the record (e.g. change of location with different local line voltage / line fre-quency), or if no documented measured values are available, then perform the device leak-age current measurement. Mark the old values as invalid. Cross out the values, enter thecomment "invalid values" and confirm with name, date, and signature.Adjust or program the system to the local line voltage or line frequency before the measure-ment.MeasurementPerform the measurement according to DIN VDE 0751, Part 1 (see ARTD-002.731.17....),and record the value determined as the first measured value.Measurement of the device leakage current according to the residual current procedure(measuring arrangement according to (Fig. 3 / p. 17)) must be given preference, since nodanger for the person performing the measurement or any other persons arises during themeasurement.However, please note the minimum resolution of the leakage current measuring instrumentand any additional manufacturer's data restricting the use of the measuring instrument.