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PV-ISOTEST
EN - 23
6.2.3. Anomalous situations
1. In case the instrument detects one of the following
conditions: “|VPN| > 1500V”, “|VPE| > 1500V” or “|VNE| >
1500V”, it stops the measurement, gives out a long
sound, and the message “
V>LIM
” is shown on the
display. Check the output voltage from the PV string.
M
15/10 – 18:04
( + )
( - )
V t e s t
- - -
- - - V
I n s . r e
- - -
- - - M
R p
- - -
M
V P N
V P E
V N E
> 1 5 0 0 V
- 7 5 0 V
7 5 8 V
V > LIM
DUAL 1500V 1.00M
MODE
Vtest. Lim.
2. In DUAL mode, in case the instrument, upon pressing the
GO/STOP
key, detects a voltage
VPN<0V
, it stops
measuring, gives out a long sound and the message
“
Reverse P-N
” is shown on the display. Check polarity
and the instrument's connections to the PV string.
M
15/10 – 18:04
( + )
( - )
V t e s t
- - -
- - - V
I n s . r e
- - -
- - - M
R p
- - -
M
V P N
V P E
V N E
- 1 4 8 0 V
- 7 5 0 V
7 4 8 V
Reverse P-N
DUAL 1500V 1.00M
MODE
Vtest. Lim.
3. In DUAL mode, in case the instrument, upon pressing the
GO/STOP
key, detects a voltage
0<VPN<30V
, it stops
measuring, gives out a long sound and the message
“
VPN < LIM
” is shown on the display. Check the output
voltage from the PV string which should be
≥
30V
M
15/10 – 18:04
( + )
( - )
V t e s t
- - -
- - - V
I n s . r e
- - -
- - - M
R p
- - -
M
V P N
V P E
V N E
2 0 V
- 7 5 0 V
7 4 8 V
VPN < LIM
DUAL 1500V 1.00M
MODE
Vtest. Lim.
4. In DUAL mode, in case the instrument, upon pressing the
GO/STOP
key, detects that one of the following
conditions on measured voltages:
RMS(VPN) - |(VPN) DC| <10
RMS(VPE) - |(VPE) DC| <10
RMS(VNE) - |(VNE) DC| <10
is not satisfied (
presence of AC components on input
voltages
), it stops measuring, gives out a long sound and
the message “
VAC>LIM
” is shown on the display. Check
the output voltages from the PV string.
M
15/10 – 18:04
( + )
( - )
V t e s t
- - -
- - - V
I n s . r e
- - -
- - - M
R p
- - -
M
V P N
V P E
V N E
1 4 8 0 V
- 7 5 0 V
7 4 8 V
VAC > LIM
DUAL 1500V 1.00M
MODE
Vtest. Lim.