Publicité
5.7.
AC/DC LEAKAGE CURRENT MEASUREMENT
Insert the cable(s) in the middle of the clamp jaws, in order to obtain
accurate measures (see § 4.1.1).
Fig. 10: Use of the instrument for AC or DC leakage current measurement
Measuring with direct method on earth leads
1. Select position
2. To measure DC current, press the ZERO key to zero residual magnetization current.
3. Open the clamp jaws and connect the instrument as shown in Fig. 10 for DC systems
or single-phase/three-phase 4-wire AC systems. The display shows the value of
leakage current.
4. To use the HOLD, MIN/MAX and ZERO functions, please refer to § 4.3.
Measuring with indirect method
1. Select position
2. To measure DC current, press the ZERO key to zero residual magnetization current.
3. Open the clamp jaws and connect the instrument as shown in Fig. 10 for DC systems
or single-phase/three-phase 4-wire AC systems. The display shows the value of
leakage current.
4. To use the HOLD, MIN/MAX and ZERO functions, please refer to § 4.3.
(AC current) or
(DC current)
(AC current) or
(DC current)
CAUTION
EN - 14
HT79
Publicité
