HT 400 Series User Manual

400 Series
EN - 14
CAUTION
If message “Measuring…” appears on the display, the instrument is
performing measurement. During this whole stage, do not disconnect the
test leads of the instrument from the mains.
5. Once the test is completed, if
all measured values are
correct, the instrument gives
a double acoustic signal and
displays the message “OK”,
which signals that the test
has been completed
successfully, and a screen
similar to the one reported
here to the side
AUTO
Ra = 49.1
Trcd = 24ms
RP-Pe > 999M
Value of earth resistance
Value of the RCD’s tripping time
Value of the phase-to-earth
insulation resistance
OK
30mA 50V 500V
IdN RCD UL VNom
6.
The results displayed can be saved by pressing the SAVE key twice or the
SAVE key and, subsequently, the ENTER key (§ 8.1)
6.1.1. Description of anomalous results
1. The instrument detects a
resistance higher than the
calculated limit value UL/IdN
(1666Ω @ UL=50V and
IdN=30mA) or higher than
the full scale value. A screen
similar to the one reported
here to the side is displayed,
a long acoustic signal is
given and the automatic test
is interrupted
AUTO
Ra = 1789
Trcd = ----ms
RP-Pe = ----M
Value of earth resistance
NOT OK
30mA 50V 500V
IdN RCD UL VNom
2. The instrument detects that
the RCD trips out of its limit
time, or does not trip at all.
A
screen similar to the one
reported here to the side is
displayed, a long acoustic
signal is given and the
automatic test is interrupted
AUTO
Ra = 1789
Trcd > 999ms
RP-Pe = ----M
Value of earth resistance
Value of the RCD’s tripping time
NOT OK
30mA 50V 500V
IdN RCD UL VNom

HT 400 Series Specifications

General

Type	Digital Multimeter
Diode Test	Yes
Auto Ranging	Yes
Data Hold	Yes
Operating Temperature	0°C to 40°C
DC Current Range	400μA to 10A
AC Current Range	400μA to 10A
Resistance Range	400Ω to 40MΩ
Continuity Test	Yes
Display	LCD, 4000 counts
Measurement Range	As per individual functions