COMBI521
EN - 106
63. Press the
SAVE
key to partially save the test and to
end
the sequence of tests
. The instrument shows the
message contained in the following screen for a few
seconds.
Repeat the sequence again, if necessary.
STS
15/10 – 18:04
Sequence completed
FAULT E
STATUS
Test 4
Measurement of overall earth resistance of the EVSE system
TT system
64. Connect the instrument to the adapter as shown in the
diagram on the display (input
B4
to input
N
, input
B3
to
input
E
and input
B1
to input
L1
).
Use the three
selectors of the adapter and set the following
positions:
PP State
13A,20A,32A
or
63A
CP State
C
Fault
OK
LOOP
15/10 – 18:04
4/6 – Ra No Trip Loop
65. This test is carried out by the instrument
only in "3-wire
Ra NoTrip
mode"
. Please refer to § 6.7.9 for a
description of the setting of the test parameters as
regards the RCD's tripping current of the EVSE system
and to § 6.7.2 for a preliminary calibration of the test
leads.
Notice the presence of the correct voltage values
between L-PE and L-N as shown in the screen on the
side.
LOOP
15/10 – 18:04
T T
R
A
U t
=
=
- - -
- - -
V
FREQ. = 50.00Hz
VL-PE=232V VL-N= 231V
Ra 3-wire 30mA
FUNC
MODE
I
n
66.
Press the
GO/STOP
key.
The instrument will start
measuring and the display will show the message
“
Measuring
…”
.
During this whole stage, do not
disconnect the test leads of the instrument from the
system being tested. The following screen appears on the
display.
In case of a
positive
result (
overall earth resistance
R
A
<(Utlim / I
n
), the instrument displays the message “
OK
”
and the screen on the side, which contains the value of
contact voltage on the secondary display.
LOOP
15/10 – 18:04
T T
R
A
U t
=
=
3 4 6
1 0 . 4
V
FREQ. = 50.00Hz
VL-PE=232V
VL-N= 231V
OK
Ra 3-wire 30mA
FUNC
MODE
I
n
Содержание COMBI521
Страница 1: ... Copyright HT ITALIA 2021 Release EN 1 01 27 09 2021 COMBI521 User manual ...
Страница 143: ......