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DET3TA, DET3TC, DET3TD and DET4TD
Earth Ground Electrode Testers

USER MANUAL

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Summary of Contents for DET3TA

Page 1: ...M DET3TA DET3TC DET3TD and DET4TD Earth Ground Electrode Testers USER MANUAL...

Page 2: ...the instrument is switched on Special precautions are necessary when operating in situations where live earths may be encountered isolation switches and fuses not supplied with this instrument must be...

Page 3: ...iate rubber gloves rubber soled shoes and stand on a rubber mat 2 The P S and C H terminals should be connected through a double pole isolation switch the rating of which will cope with the maximum fa...

Page 4: ...ent of ground noise voltage 11 Two terminal resistance measurement 12 Three terminal ground rod resistance measurement 12 Four terminal ground rod resistance measurement DET4TD 13 Ground resistance me...

Page 5: ...tor current The DET variants have the following features Feature DET3TA DET3TC DET3TD DET4TD Automatic C spike check Automatic P spike check Manual P spike check Automatic noise check Manual noise che...

Page 6: ...tteries and calibration certificate stored in a tough polypropylene carrying case Test lead connections at rear Rc OK Selector switch Resistance measurement settings 2P and 3P Resistance scale Voltage...

Page 7: ...cator OK or high Current probe resistance OK or high Clamp current indicator OK or low Ground noise voltage indicator OK high Test lead connections at rear of instrument Test lead connections at rear...

Page 8: ...eir condition is good with no damaged or broken insulation DET4D PREPARATIONS FOR USE ALL INSTRUMENTS Test lead connections at rear of instrument Resistance measurement settings 2P 3P and 4P Selector...

Page 9: ...FF setting on the selector switch and then switched on as normal Display symbols DET3TC DET3TD DET4TD G Warning Triangle f Fuse Blown Battery Indicator not DET3TA 100V Indicates that the ground noise...

Page 10: ...coming exhausted To replace batteries Warning Do not operate instrument with the battery cover removed 1 To avoid the possibility of electric shock switch instrument OFF and disconnect the instrument...

Page 11: ...bol f DET3TD DET3TC and DET4TD Only one fuse is contained within the instrument and is user replaceable When the fuse ruptures symbol will show and testing is inhibited To replace the fuse Warning Do...

Page 12: ...und noise voltage setting marked V 3 The ground noise voltage reading will be displayed on the LCD display as shown in Figure 3 Figure 3 Ground noise voltage reading Two terminal resistance measuremen...

Page 13: ...rror the effect can be removed from the measured resistance using the method below 1 With the selector switch in the OFF position connect the instrument as shown in Figure 5 with the lead shown dotted...

Page 14: ...the resistance measurement will be continually updated and displayed 4 The instrument will then check for ground noise the parameters of the current and voltage circuits and the integrity of the fuse...

Page 15: ...also allows individual measurement of each rod Measuring ground resistance with the ICLAMP using ART DET3TC Figure 10 Connection for measuring three terminal ground rod resistance 1 With the selector...

Page 16: ...battery life Ground noise voltage measurement DET3TA Figure 13 Connections for measuring ground noise voltage and two terminal resistance 4 The instrument will then check for ground noise voltage the...

Page 17: ...the analogue display as shown in Figure 14 Figure 14 Analogue display indicating ground noise voltage measurement Two terminal resistance measurement DET3TA 1 With the selector switch in the OFF posi...

Page 18: ...ithin acceptable limits as shown in Figure 17a within the Green region on the Rp scale release the Spike button Figure 17a P Spike OK in green zone Figure 17b P Spike NOT OK in red zone 7 Press and ho...

Page 19: ...guaranteed data Values without tolerances are for information only Resistance Measurement Range 0 01 to 2 000 Accuracy 2 3 digits DET3TC DET3TD DET4TD 2 5 of scale length DET3TA Voltage Measurement Ra...

Page 20: ...R6 AA 1 5 V Alkaline Rechargeable 8 x 1 2V NiCAD or 8 x 1 2V NiMH Battery life Approx 700 consecutive tests Fuses 500 mA F HBC 50 kA 600 V 32 x 6 mm Weight and Dimensions Weight 1kg all units Dimensio...

Page 21: ...it is necessary to return an instrument for repair a returns Authorisation number must first be obtained by contacting one of the addresses shown You will be asked to provide key information such as...

Page 22: ...egger Pty Limited Unit 26 9 Hudson Avenue Castle Hill Sydney NSW 2125 Australia T 61 0 2 9659 2005 F 61 0 2 9659 2201 E ausales megger com Megger Limited 110 Milner Avenue Unit 1 Scarborough Ontario M...

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