Huawei SUN2000 Series User Manual page 72

Technical SUN2000-3
Specificatio KTL-M0
ns
Residual
Yes
current
monitoring
unit (RCMU)
Optimizer Optional
Built-in PID Optional
a
repair
Note a: When the inverter is disconnected from the grid, the built-in PID can repair the PV– positive offset.
(PV– positive offset refers to raising the voltage between PV– and the ground to above 0 V through voltage
compensation.) When designing the system, confirm with the PV module manufacturer that the anti-PID
voltage compensation direction of the PV module is the PV– positive offset. Otherwise, PV modules may be
damaged. Built-in PID repair supports P-type (mono, poly) and N-type (nPERT, HIT) PV modules.
For the SUN2000 that supports built-in PID repair, when Built-in PID running mode is set
to Repair, there is repair voltage between PV modules and the ground at night. If you need to
maintain PV modules at night, power off the SUN2000 to avoid electric shocks.
Display and Communication
Technical SUN2000-3
Specificatio KTL-M0
ns
Display LED indicators; WLAN+app
RS485 Yes
Communicati
(Optional) WLAN/GPRS/4G
ons expansion
module
Remote dry Yes
contact
scheduling
Issue 02 (2019-04-30)
SUN2000-4 SUN2000-5
KTL-M0 KTL-M0
SUN2000-4 SUN2000-5
KTL-M0 KTL-M0
Copyright © Huawei Technologies Co., Ltd.
SUN2000-(3KTL-10KTL)
SUN2000-6 SUN2000-8
KTL-M0 KTL-M0
SUN2000-6 SUN2000-8
KTL-M0 KTL-M0
User Manual
SUN2000-1
0KTL-M0
SUN2000-1
0KTL-M0
Page 72 of 81