HT COMBI521, User Manual

Page: 95 / 144

COMBI521
EN - 95
16.
For single-phase EVSE systems , press the GO/STOP
key on the instrument. The instrument starts the
automatic test sequence of insulation resistance among
L-N, L-PE and N-PE respectively, and displays the
message "
Measuring... ". The instrument displays the
message " OK " in case of a positive result of every test
(value higher than the set minimum threshold).
M

15/10 – 18:04
RL-N
>
999 M

Vt
=
523 V
RL-PE = 250 M 
Vt = 525 V
RN-PE > 999 M 
Vt = 524 V
OK
AUTO 500V 1.00M

MODE Vtest Lim.
17.
Press the SAVE key to partially save the test, and to carry on with the subsequent test
(no. 26).
18.
For three-phase EVSE systems , press the GO/STOP
key on the instrument. The instrument starts the
automatic test sequence of insulation resistance between
L1-N and L1-PE respectively, and displays the message
" Measuring... ". The instrument displays the message
" Connect phase L2 " in case of a positive result of the
tests (value higher than the set minimum threshold).
Press the SAVE key to partially save the test, and to
carry on with the test on Phase L2. The following screen
appears on the display:
M

15/10 – 18:04
RL1-N >
999 M

Vt = 514 V
RL1-PE > 999 M 
Vt = 511 V
RL2-N =
- - - M

Vt = - - - V
RL2-PE = - - - M 
Vt = - - - V
RL3-N =
- - - M

Vt = - - - V
RL3-PE = - - - M 
Vt = - - - V
RN-PE = - - - M 
Vt = - - - V
Connect phase L2
AUTO 500V 1.00M

MODE Vtest Lim.
19. 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 L2 ). Use the three
selectors of the adapter and set the following
positions
:
 PP State  NC
 CP State  A
 Fault  OK
M

15/10 – 18:04
2/6 – L2 Insulation test
20. Press the
GO/STOP key on the instrument. The
instrument starts the automatic test sequence of
insulation resistance between
L2-N and L2-PE
respectively, and displays the message " Measuring... ".
The instrument displays the message " Connect phase
L3 " in case of a positive result of the tests (value higher
than the set minimum threshold).
Press the SAVE key to partially save the test, and to
carry on with the test on Phase L3. The following screen
appears on the display:
M

15/10 – 18:04
RL1-N > 999 M  Vt = 514 V
RL1-PE > 999 M 
Vt = 511 V
RL2-N =
250 M

Vt = 517 V
RL2-PE > 999 M

Vt = 514 V
RL3-N =
- - - M

Vt = - - - V
RL3-PE = - - - M 
Vt = - - - V
RN-PE = - - - M 
Vt = - - - V
Connect phase L3
AUTO 500V 1.00M

MODE Vtest Lim.