HT HT9020, User Manual

Page: 26 / 52

HT9020
EN - 24
5.6.2. Dynamic Inrush current measurement
CAUTION

The maximum measurable AC/AC+DC current is 1000A. Do not measure
currents exceeding the limits given in this manual. Exceeding these limits
could result in electrical shocks to the user and damage to the instrument.

We recommend holding the clamp respecting the safety area created by
the hand protection (see Fig. 3).

Currents <2A are zeroed.
1. Press
F1
(
Mod
) to select the inrush current measurement
between the “
Inrush 100A
” (for inrush current <100A) or
“
Inrush 1000A
” (for inrush current <1000A) options as
shown asideress
F4
(
OK
) to confirm
Mod Har Fnc OK
50HzA C 5 0 . 0
10 A
2. Press
F3
(
Lim
) for the setting of limit threshold value on
inrush current and the type of measurement as shown aside
Mod Dsp Lim Run
D y n a m i c I R
C
---- A
Fix – LIM 2A
3. Press
F2
(  ) or
F3
(  ) to set the reference threshold for the
saving of event (
2A

100A
for “Inrush 100A” and
5A

900A
for “Inrush 1000A”)
4. Press
F4
(
OK
) to confirm and return to main screen.
 
OK
T h r e s . :
002 A
5. Press
F4
(
Run
) key to start the detection of the inrush
current event. Press
F4
(
Stp
) to stop the detection of the
inrush current event in any time. After the detection of the
event (when the measured current is over the limit
threshold),
the measurement is automatically stopped
by
the instrument and the maximum RMS value in 100ms is
displayed as shown aside
Mod Par Lim Run
D y n a m i c I R
C
100ms
14.3 A
Fix – LIM 2A
AC
DC
Inrush 100A
Inrush 1000A
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