Phase Sequence Indication - HT 10 Manuel D'utilisation

5.5.

PHASE SEQUENCE INDICATION

 The maximum input for AC voltage is 1000V. Do not try to measure
higher voltages to avoid risk of electrical shocks or serious damages to
the instrument

probes over 50V
1. Perform the preliminary Autotest function (see § 4.4)
2. Connect L1 probe on L1 phase and L2 probe on L2 phase of the three-phase system
under test (see Fig. 8). The measurement is performed only with contact of probes
directly on metal parts of conductors
3. The LED
displayed and an acoustic signal is emitted
4. The symbol (clockwise) is displayed in case of correct phase sequence indication.
The symbol (anticlockwise) is displayed in case of incorrect phase sequence
indication
5. Connect L1 probe on L2 phase and L2 probe on L3 phase of the three-phase system
under test. The
indication. The
sequence indication
6. Connect L1 probe on L3 phase and L2 probe on L1 phase of three-phase system
under test. The
indication. The
sequence indication
7. Press the H/ key to activate/deactivate the HOLD function at display. Press and hold
the H/ key in order to activate/deactivate the display backlight
8. Press the / key to activate/deactivate the white LED torch
Warning LED turns ON and the buzzer sound for voltage between
Fig. 8: Phase sequence test
and the "AC" indication switch on, the AC voltage measurement is
symbol (clockwise) is displayed in case of correct phase sequence
symbol (anticlockwise) is displayed in case of incorrect phase
symbol (clockwise) is displayed in case of correct phase sequence
symbol (anticlockwise) is displayed in case of incorrect phase
CAUTION
EN - 12
HT10