Dc Current Measurement; Ac Current Measurement - HT HT9025 User Manual

5.9. DC CURRENT MEASUREMENT

Make sure that all the test leads are disconnected from
the meter terminals for current measurement
1. Select position 60A
2. Press key MODE/VFD to select measurement "A
3. Long press key HOLD/REL to perform the zeroing of residual
magnetization current (see § 4.3)
4. Put the conductor to be tested inside to the center of clamp jaw
(see Fig. 31) in order to perform accurated measurements in the
direction from positive pole "+" (see Fig. 1 – part 2) to the
negative pole "-" (see Fig. 2 – part 1). Consider the notches on
jaws as reference (see
5. The display shows the value of DC current.
6. If the display shows the message
measurable value has been reached.
" "
7. When symbol -
that current has the opposite direction with respect to the
connection in Fig. 31
8. To use the HOLD function, see § 4.2
9. To use the internal functions, see § 4.3
10. To save the measured result, see § 4.3

5.10. AC CURRENT MEASUREMENT

Make sure that all the test leads are disconnected from
the meter terminals for current measurement
1. Select positions 60A
2. Press the MODE/VFD key to select
3. Put the conductor to be tested inside to the center of clamp jaw
(see Fig. 32) to perform accurate measurements. Consider the
notches on jaws as reference (see Fig.3)
4. The display shows the value of current.
5. If the display shows the message
measurable value has been reached.
6. To use the HOLD function, see § 4.2
7. To use the internal functions, see § 4.3
8. To save the measured result, see § 4.3
77
CAUTION
, 600A o 1000A
Fig. 3
)
appears on the instrument's display, it means
CAUTION
, 600A or 1000A
"
A
HT9025 - HT9025T
"
" "
OL , the maximum
"
measurement
" "
OL , the maximum