Kyoritsu 4140 User Manual

INSTRUCTION MANUALDIGITAL LOOP/PFC/PSC TESTERＫＥＷ 4140

̶ 8 ̶ 5. Specification 5.1 Measurement SpecificationLoopImpedanceFunction(Operating Voltage)Rated VoltageRange(Auto-Ranging)NominalTestCurrentat

̶ 9 ̶PHASEROTATIONRatedVoltageRemarks50∼500V45~65HzCorrectphasesequence:displayed“1.2.3”and markReversedphasesequence:displayed“3.2.1”an

̶ 10 ̶5.3 General specificationInstrument dimensions 84X184X133mmInstrument weight:- 860g(includingbatteries.)Reference conditions Specification

̶ 11 ̶ 6. Preparation for Measurement CheckofBatteryvoltage(1)See“12.Batteryreplacement”andinstallbatteriesinKEW4140.(2)PressthePower

̶ 12 ̶ 7. LOOP/ PSC/PFC Test 7.1 Principles of measurement of fault loop impedance and PFCIf an electrical installation is protected by over-curren

̶ 13 ̶AccordingtotheInternationalStandardIEC60364,forTTsystemsthe characteristics of the protective device and the circuit resistance shall

̶ 14 ̶Forthisexamplethemaxpermissiblevalueis1667Ω(RCD=30mAand contactvoltagelimit of 50 V).The instruments reads 12.74Ω,thus the

̶ 15 ̶　-400msforfinalcircuitsnotexceeding32A(at230/400VAC)　-5sfordistributioncircuitsandcircuitsover32A(at230/400VAC)The co

̶ 16 ̶Fig.7-4MaxvalueofZsforthisexampleis1.44Ω(MCB16A,characteristicC),theInstrumentreads1.14Ω(or202AonFaultcurrentrange)it

̶ 17 ̶　　　　　　Fig.7-57.3. Operating instructions for LOOP and PSC/PFC7.3.1 Initial Checks: to be carried out before any testing1. Preparation Always

CONTENTS1. Safe Testing ･･･････････････････････････････････････････ 12. Instruments Layout ･･････････････････････････････････････ 33. Accessories ･･

̶ 18 ̶or symbol is indicated on the LCD, DO NOT PROCEEDASTHEREISINCORRECTWIRING.Thecauseofthefaultmustbeinvestigated and rectif

̶ 19 ̶7.3.3 Contents displayed on Sub DisplayLOOP test results are displayed as illustrated below.Resultsdisplayed on the LCD are de

̶ 20 ̶●Measured result may be influenced depending on the phaseangle of the distribution system when making measurement near a transformer

̶ 21 ̶ Fig.7-10ConnectionforLine–NeutralmeasurementFig.7-11ConnectionforLine–Linemeasurement

̶ 22 ̶ 8. Phase Rotation Tests 1.OperatethePowerswitchandturnontheinstrument.PressthePHASEROTATIONfunctionswitch.2.InserttheTest

̶ 23 ̶ 9. Volts 1.OperatethePowerswitchandturnontheinstrument.PresstheVOLTSfunctionswitch.2.InserttheTestLeadsintotheinstrumen

̶ 24 ̶ 12. Battery Replacement # DANGER●Never open the battery compartment cover while makingmeasurement. To avoid possible electrical shoc

̶ 25 ̶ 13. Servicing If this tester should fail to operate correctly, return it to your distributor stating the exact nature of the fault. B

̶ 26 ̶ 14.Case and Strap Assembly 14-1HowtofastentheStrapbelt(1)Pass the Side Belt throughth e Bu ckle as sho wn i n Fig.14-1.(2pc

̶ 27 ̶14-2HowtostoreinSoftCaseFollow the procedure (1) and (2) as illustrated below to store the instrumentintheSoftCase.     Fig14-4

̶ 1 ̶ 1. Safe Testing Electricity is dangerous and can cause injury and death. Always treat it with the greatest of respect and care. If you

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DISTRIBUTOR10-05 92-2019AKyoritsu reserves the rights to change specifications or designs described in this manual without notice and without

̶ 2 ̶# DANGER●This instrument is designed to work in distribution systemswhere the line to earth has a maximum voltage of 300V 50/60Hz and f

̶ 3 ̶ 2. Instrument Layout 1. Front ViewFig.2-1Name Operation①Display(LCD) --②Test Switch Start measurements. ③BackLightSwitch Switches on/off th

̶ 4 ̶2. Input TerminalFig.2-2①Terminal Names for :LOOP,VOLTSL:LinePE:ProtectiveEarthN:Neutral(forLOOP)②Terminal Name for L1:Line1PHASEROT

̶ 5 ̶List of Display MessageBattery symbolDisplayedwhenthemeasuredvaluesexceedthedisplayable range. (over-range)e.g.Thedisplayshows“>199

̶ 6 ̶ 3. Accessories 1.MainTestLead(Model7218) Fig.3-12.DistributionBoardTestLead(Model7246) Fig.3-2 3.SoftCas

̶ 7 ̶ 4. Features The KEW4140 LOOP/PFC/PSC tester performs three function inone instrument.1Loopimpedancetester2 Voltage tester3Phasero