HT PVCHECKs-PRO - Anomalous Situations

PVCHECKs-PRO
EN - 28
6.4.3. Anomalous situations
1. In case the instrument detects one of the following
conditions: “|VPN| > 1500V”, “|VPE| > 1500V” or “|VNE| >
1500V”, it stops measuring, gives out a long sound, and
the message “V > LIM” appears on the display. Check the
output voltage from the PV string.
M 15/10 – 18:04
(+) (-)
Vtest - - - - - - V
Ins.re - - - - - - M
Rp - - - M
VPN VPE VNE
>1500V 750V -750V
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” appears on the display. Check polarity and
the instrument's connections to the PV string.
M 15/10 – 18:04
(+) (-)
Vtest - - - - - - V
Ins.re - - - - - - M
Rp - - - M
VPN VPE VNE
-1480V -750V 748V
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 VPN<15V, it stops
measuring, gives out a long sound and the message
“VPN<15VDC” appears on the display. Check the output
voltage from the PV string, which must be ≥30V.
M 15/10 – 18:04
(+) (-)
Vtest - - - - - - V
Ins.re - - - - - - M
Rp - - - M
VPN VPE VNE
10V 5V -5V
VPN < 15VDC
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
(+) (-)
Vtest - - - - - - V
Ins.re - - - - - - M
Rp - - - M
VPN VPE VNE
1480V 750V -730V
VAC > LIM
DUAL 1500V 1.00M
MODE Vtest. Lim.