Huawei SUN2000 MB0 Series User Manual

Procedure
WARNING
Before inserting the positive and negative connectors into the positive and
negative DC input terminals of the inverter, ensure that the DC SWITCH is set to
OFF.
NO TICE
● Cables with high rigidity, such as armored cables, are not recommended as DC
input power cables, because poor contact may be caused by the bending of the
cables.
● Before assembling DC connectors, label the cable polarities correctly to ensure
correct cable connections.
● After crimping the positive and negative metal terminals, pull the DC input
power cables back to ensure that they are connected securely.
● Insert the crimped metal terminals of the positive and negative power cables
into the appropriate positive and negative connectors. Then pull back the DC
input power cables to ensure that they are connected securely.
● If a DC input power cable is reversely connected and the DC SWITCH is set to
ON, do not immediately operate on the DC SWITCH or the positive/negative
connectors. Otherwise, the device may be damaged. The resulting device
damage is not covered by the product warranty. Wait until the night when solar
irradiance declines and the PV string current drops to below 0.5 A. Then set the
DC SWITCH to OFF, remove the positive and negative connectors, and correct
the polarities of the DC input power cable.
NO TE
● The multimeter must have a DC voltage range of at least 1100 V. If the voltage is a
negative value, the DC input polarity is incorrect. Rectify the connection. If the voltage is
greater than 1100 V, too many PV modules are connected to the same string. Remove
some PV modules.
● If PV strings are
congured with optimizers, check the cable polarities by referring to the
Smart PV Optimizer Quick Guide .
Step 1 Connect DC input power cables.
CA UTION
Use the Staubli MC4 positive and negative metal terminals and DC connectors
delivered with the inverter. Using incompatible positive and negative metal
terminals and DC connectors may result in serious consequences. The resulting
device damage is not covered by the product warranty.
SUN2000-(12K-25K)-MB0 Series
User Manual 5 Electrical Connections
Issue 01 (2023-04-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 47

Huawei SUN2000 MB0 Series Specifications

General

Type	String Inverter
Max Input Voltage	1100 V
MPPT Voltage Range	200 V - 1000 V
Number of MPPTs	2
Max Input Current per MPPT	26 A
Rated Output Frequency	50 Hz / 60 Hz
Max Efficiency	98.6%
Operating Temperature Range	-25°C to +60°C
Protection Degree	IP65
Cooling	Natural Convection
Power Factor Adjustment Range	0.8 leading to 0.8 lagging
Cooling Method	Natural Convection
Protection Level	IP65
Model	SUN2000
Rated Output Voltage	230 V / 400 V
Humidity	0% - 100%
Communication	RS485