Power Quality Analyzer Model 3945-B 7CHAPTER 1INTRODUCTIONWarning• Never use on circuits with a voltage higher than 600V and an overvoltagecategory higher than CAT III or IV (probe dependant)• Use in indoor environments only.• Only use accessories that are compliant with the safety standards(IEC 664-1 Ed. 92) 600V min and overvoltage CAT III or IV.• Only use factory specified replacement parts.• Always disconnect the power cord, measurement leads and sensors be-fore replacing the battery.1.1 International Electrical SymbolsSignifies that the instrument is protected by double or reinforced insulation.CAUTION - DANGER! Read the User Manual.Risk of electric shock. The voltage at the parts marked with this symbol maybe dangerous.Refers to a type A current sensor. This symbol signifies that application aroundand removal from HAZARDOUS LIVE conductors is permitted.Refers to a type B current sensor. Do not apply around or remove from HAZARD-OUS LIVE conductors without additional protective means (de-energizing thecircuit or wearing protective clothing suitable for high voltage work).Important instructions to read and understand completely.Important information to acknowledge.USB socketThe CE marking guarantees conformity with European directives and withregulations covering EMC.The trash can with a line through it means that in the European Union, theproduct must undergo selective disposal for the recycling of electric andelectronic material, in compliance with Directive WEEE 2002/96/EC.