
SmartLogger2000
User Manual
7 WebUI
Issue 04 (2018-04-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
139
No. Parameter
Function
Value
Description
direction
PV+
negative
offset
Select
PV– positive offset
for P-type PV
modules or the N-type PV modules that comprise
the solar cells whose positive and negative
polarities are on different sides. For example,
P-type PV modules, HIT, CIS, thin-film PV
modules, and CdTe PV modules meet the
requirement for PV– positive offset.
PV+ negative offset
refers to lowering the
voltage between PV+ and ground to below 0 V
through voltage compensation.
Select
PV+ negative offset
for the N-type PV
modules that comprise the solar cells whose
positive and negative polarities are on the same
side.
NOTE
When designing a PV plant, the design institute or user
should ask the PV module vendor about the direction of
voltage compensation for resisting the PID effect.
14
Working
mode
Specifies the
working mode of
the PID module.
Normal
In normal mode, the PID module operates
automatically after the PID module, inverter, and
SmartLogger communicate with each other properly.
Commissi
oning
In commissioning mode, set
Commissioning output
voltage
. The PID module delivers voltage based on
the commissioning output voltage.
NOTE
To check whether the PID module functions properly, it is
recommended that
Working mode
be set to
Commissioning
upon first power-on.
15
Maximum
system
DC-to-ground
withstand
voltage
Specifies the
voltages between
the PV side and PE
and between the
AC side and
ground in normal
mode.
500–1500
V
Specifies the lower thresholds of the maximum
voltage ranges between the inverter DC side
(including the inverter, PV module, cable, SPD, and
switch) and ground in a PV power system.
The default value is 1000 V. For the 1500 V
inverter, the recommended value is 1500 V.
16
AC-to-ground
resistance
alarm
threshold
Specifies the alarm
threshold for the
impedance
between the AC
side of the PID
module and
ground.
0.2–100
kΩ
You can set an alarm threshold for the impedance
between the AC grid and ground for the PID
module. If the detected impedance is below the
threshold, the PID module will generate an alarm.