Ht-instruments HT77N Manual de usuario descargar pdf (Pagina 10)

HT77N

EN - 9

4.3.2. Leakage current measurement

CAUTION

Insert the cable(s) in the middle of the clamp jaws, in order to obtain

accurate measures. Use the marks as a reference (see § 4.1.2)

Fig. 4: Measuring leakage current with direct

method in a single phase load

Fig. 5: Measuring leakage current with

indirect method in a single phase load

Fig. 6: Measuring leakage current with direct

method in a three phase load

Fig. 7: Measuring leakage current with

indirect method in a three phase load

Leakage current measurement with Direct method on earth conductors

1. Switch on the clamp by pressing the key

2. Select the desired capacity with the Range key or keep in the Autorange mode

3. Open the clamp jaw and connect the clamp as shown in Fig. 4 or Fig. 6. The leakage

current value will be shown on the display

4. For Hold, Data Hold, Auto Hold and Peak Hold feature refer to § 4.2

Leakage current measurement with Indirect method

1. Switch on the clamp by pressing the key

2. Select the desired capacity with the Range key or keep in the Autorange mode

3. Open the clamp jaw and connect the clamp as shown in Fig. 5 or Fig. 7. The leakage

current value will be shown on the display

4. For Hold, Data Hold, Auto Hold and Peak Hold feature refer to § 4.2

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Ht-instruments HT77N Manual de usuario Pagina 10