Ht-instruments FULLTEST3 Manual do Utilizador descarregar pdf (Página 2)

FULLTEST 3

EN - 1

Table of contents:

1. SAFETYPRECAUTIONSANDPROCEDURES.............................................................................................3

1.1. PRELIMINARYINSTRUCTIONS......................................................................................................4

1.2. DURINGUSE................................................................................................................................4

1.3. AFTERUSE...................................................................................................................................5

1.4. OVERVOLTAGECATEGORIES‐DEFINITIONS..................................................................................5

2. GENERALDESCRIPTION.........................................................................................................................6

2.1. WORKING....................................................................................................................................6

2.2. OPENINGTHEINSTRUMENT'SCOVER...........................................................................................8

3. PREPARATIONFORUSE........................................................................................................................9

3.1. PRELIMINARYCHECKS..................................................................................................................9

3.2. POWERSUPPLY...........................................................................................................................9

3.3. CALIBRATION...............................................................................................................................9

3.4. TRANSPORTANDSTORAGE..........................................................................................................9

4. OPERATINGINSTRUCTIONS................................................................................................................10

4.1. INSTRUMENT‐DESCRIPTION.....................................................................................................10

4.2. TURNINGONTHETESTER..........................................................................................................11

4.3. MEASUREMENTFUNCTIONSELECTION......................................................................................12

5. MEASUREMENTS................................................................................................................................13

5.1. CONTINUITY‐TWOWIREMETHOD(RPE‐2WIRE)........................................................................13

5.1.1. RPE‐2WIREDISPLAYEXPLANATION...............................................................................................13

5.1.2. CALIBRATIONOFTESTLEADS........................................................................................................14

5.1.3. LIMITVALUEADJUSTMENT...........................................................................................................15

5.1.4. RPE‐2WIREMEASUREMENT..........................................................................................................16

5.2. CONTINUITY‐FOURWIREMETHOD(RPE‐4WIRE).......................................................................18

5.2.1. RPE‐4WIREDISPLAYEXPLANATION...............................................................................................18

5.2.2. CALIBRATIONOFTESTLEADS........................................................................................................19

5.2.3. RPE‐4WIREMEASUREMENT..........................................................................................................20

5.3. INSULATIONRESISTANCE(M



)..................................................................................................22

5.3.1. RISODISPLAYEXPLANATION.........................................................................................................22

5.3.2. RISOMEASUREMENT....................................................................................................................23

5.4. DIELECTRIC(DIELECTRIC)............................................................................................................ 25

5.4.1. WARNINGS....................................................................................................................................25

5.4.2. DIELECTRICDISPLAYEXPLANATION..............................................................................................26

5.4.3. DIELECTRICTEST............................................................................................................................27

5.5. RCD(RCD)..................................................................................................................................29

5.5.1. RCDDISPLAYEXPLANATION..........................................................................................................29

5.5.2. EXPLANATIONOFRCDTESTCURRENTS........................................................................................30

5.5.3. RCDMEASUREMENT.....................................................................................................................31

5.6. LOOPIMPEDANCE/SHORT‐CIRCUITCURRENT(LOOP)...............................................................33

5.6.1. LOOPDISPLAYEXPLANATION........................................................................................................33

5.6.2. LIMITVALUEEXPLANATION..........................................................................................................34

5.6.3. PROSPECTIVESHORT‐CIRCUITCURRENTCALCULATION...............................................................35

5.6.4. LOOPMEASUREMENT...................................................................................................................36

5.7. GLOBALEARTHRESISTANCE/CONTACTVOLTAGE(RA)..............................................................39

5.7.1. RALIMITVALUECALCULATION.....................................................................................................39

5.7.2. RADISPLAYEXPLANATION............................................................................................................39

5.7.3. RAMEASUREMENT.......................................................................................................................40

5.8. RESIDUALVOLTAGE(URES)........................................................................................................42

5.8.1. EXPLANATIONOFLINEARMODE..................................................................................................42

5.8.2. EXPLANATIONOFNONLINEARMODE...........................................................................................43

5.8.3. URESDISPLAYEXPLANATION........................................................................................................44

5.8.4. TRIGGERCONDITIONS...................................................................................................................44

5.8.5. URESMEASUREMENT...................................................................................................................45

5.9. POWER(POWER).......................................................................................................................48

5.9.1. POWERDISPLAYEXPLANATION....................................................................................................48

5.9.2. POWERMEASUREMENT...............................................................................................................49

5.10. PHASESEQUENCE(PHASESEQ)................................................................................................... 51

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