HT COMBI521, Руководство пользователя

Страница: 107 / 144

COMBI521
EN - 107
67. Press the SAVE key to partially save the test, and to carry on with the subsequent test
(no. 75).
68.
In case of a negative result ( overall earth resistance R
A
>(Utlim / I

n ), the instrument displays the message “ NO
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
=
=
1 7 6
5
> 5 0

V
FREQ. = 50.00Hz
VL-PE=232V
VL-N= 231V
NO OK
Ra 3-wire 30mA
FUNC MODE I

n
69. 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.
LOOP 15/10 – 18:04
Sequence completed
Ra 3-wire 30mA
FUNC MODE I

n
TN system
70. This test is carried out by the instrument
only in "3-wire
Ra NoTrip mode" with fixed RCD protection . Please
refer to § 6.7.7 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 N
I s c = - - - A Z L - N = - - - Ω
I f c = - - - A Z L - P E = - - - Ω
F R E Q = 5 0 . 0 0 H z
V L - P E = 2 3 2 V V L - N = 2 3 1 V
Ra 3-wire 30mA
FUNC MODE I

n
71.
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.
In case of a
positive result ( ZL-PE <Utlim/I

n ), the
instrument shows the message “ OK ” and the screen on the
side.
LOOP
15/10 – 18:04
T N
I s c = 1 3 6 5 A Z L - N = 0 . 1 6 Ω
I f c = 1 2 1 3 A Z L - P E = 0 . 1 8 Ω
F R E Q = 5 0 . 0 0 H z
V L - N = 2 3 2 V V L - P E = 2 3 1 V
O K
Ra 3-wire 30mA
FUNC MODE I

n