Huawei SUN2000 MB0 Series User Manual

5.5.5 Connecting the NS Protection Signal Cables
Connecting NS Protection Signal Cables to Inverters
NO TE
● The NS protection function is applicable to grid code VDE-AR-N-4105, SWITZERLAND-
NA/EEA:2020-LV230, or FINLAND-EN50549-LV230.
● The NS protection switch is connected to GND (pin 1) at one end and to DIN5 (pin 6) at
the other end. The switch is turned
o by default. When the switch is turned on, NS
protection is triggered. Rapid shutdown and NS protection use the same pins, which are
GND (pin 1) and DIN5 (pin 6). Therefore, you can use only one of the functions.
● The NS protection switch connection is the same for a single inverter and for cascaded
inverters.
● Log in to the FusionSolar app as an installer, choose Me > Device commissioning, and
connect to the WLAN hotspot of the inverter. Log in to the local commissioning system
as an installer, choose Settings > Feature parameters > Dry contact function, and set
Dry contact function to NS protection.
Figure 5-33 Connecting cascaded inverters to the NS protection switch
Step 1 Connect the signal cables of the cascaded inverters to the signal cable connectors.
SUN2000-(12K-25K)-MB0 Series
User Manual 5 Electrical Connections
Issue 01 (2023-04-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 62

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