File name: Electrical testing sequence pdf
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The The following procedures should be followed as part of the periodic test and inspection sequence: Continuity. Insulation Inspection before Test Sequence of Tests Conductor Continuity Insulation Resistance Polarity Earth Electrode Resistance Earth Fault The test results should be recorded on an installation schedule similar to the diagram in Figure The list above indicates the order in which the tests should be conducteddeveloped for each test referencing the equipment to be used, drawings to be followed, and step by step procedures with readings to be recorded and forms for the resultsSystem commissioning testing Electrical systems commissioning on new projects is critical to ensure that a system is installed properly and that it will operate as designed The following procedures should be followed as part of the periodic test and inspection sequence: Continuity. Ring Circuit Continuity. Polarity. Bonding Conductors Continuity. All that is needed for basic electrical testing is a DVOM (digital-volt-ohm-meter) and a wiring diagram Insulation Resistance. BPA has hundreds of power transformers installed throughout the system, and few of them are identical. Earth Fault Loop Impedance. Ring Circuit Continuity. RCD testing. Initial verifi cation testingSequence of testsPeriodic inspectionExtent and limitationsVisual inspectionContents INSPECTION v the person(s) making the final electrical tests on the transformers. Bonding Conductors Continuity. Earth Electrode Resistance. Functional testing of isolators and breakers Practical Guide to Inspection, Testing and Certifi cation of Electrical Installations INSPECTION i/02/ FigureTesting requirements and sequence according to IEC Annex C. Selection of the test Insulation resistance Visual inspection Functional test Protective earth resistance Reporting of results Leakage current Evaluation Check and prepare for normal use Start Basic electrical safety testing with the ESA The ESA integrates all Testing is as easy as 1, 2, 3, andFor any circuit to operate four items must be present) voltage; 2) load; 3) ground; 4) continuity.