HT PV-ISOTEST User Manual page 28

10. With no fault conditions (Rp≥Lim), the instrument
shows the screen to the side and the message "OK"
appears on the display.
11. In case a fault is present (Rp<Lim) in position 0
(upstreams of the first module), the instrument shows
the screen to the side and the message "GND: Fault
(+)..1" on the display.
conductor (+) coming from the string
12. In case a fault is present (Rp<Lim) in position
NMOD+1 (downstream of the last module), the
instrument shows the screen to the side and the message
"GND: Fault NMOD..(-)" on the display.
insulation state of the conductor (-) coming from the string
13. In case a fault is present (Rp<Lim) in position 1
(between module 1 and 2), the instrument shows the
screen to the side and the message "GND:Fault 1..2" on
the display. Check the state of insulation of the junction
boxes of the modules indicated (1 and 2 in the example)
and related connection cables
Check the insulation state of the
EN - 27
GFL
R p
V P N
1 4 8 0 V
14
NMOD
GFL
R p
V P N
1 4 8 0 V
14
NMOD
GFL
R p
Check the
V P N
1 4 8 0 V
14
NMOD
GFL
R p
V P N
1 4 8 0 V
14
NMOD
PV-ISOTEST
15/10 – 18:04
M 
> 1 0 0
V P E V N E
- 7 5 0 V 7 4 8 V
OK
1500V 0.10M
Vtest. Lim.
15/10 – 18:04
M 
0 . 0
V P E V N E
- 7 5 0 V 7 4 8 V
GND: Fault (+)..1
1500V 0.10M
Vtest. Lim.
15/10 – 18:04
M 
0 . 0
V P E V N E
- 7 5 0 V 7 4 8 V
GND:Fault 14...(-)
1500V 0.10M
Vtest. Lim.
15/10 – 18:04
M 
0 . 0
V P E V N E
- 7 5 0 V 7 4 8 V
GND: Fault 1..2
1500V 0.10M
Vtest. Lim.