Huawei SUN2000-M3 User Manual

8 Maintenance
8.1 System Power-O
Precautions
WARNING
After the SUN2000 powers o, the remaining electricity and heat may still cause
electric shocks and body burns. Therefore, put on protective gloves and begin
operating the SUN2000
ve minutes after the power-o.
Procedure
Step 1 Send a shutdown command on the app.
Step 2 Turn o the AC switch between the SUN2000 and the power grid.
Step 3 Turn o the DC switch at the bottom of the SUN2000.
Step 4 (Optional) Install the locking screw for the DC switch.
Figure 8-1 Installing the locking screw for the DC switch
Step 5 Turn on the DC switch between the PV string and the SUN2000 if there is any.
----End
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 8 Maintenance
Issue 11 (2023-01-10) Copyright © Huawei Technologies Co., Ltd. 72

Huawei SUN2000-M3 Specifications

General

Type	String Inverter
Rated AC Grid Frequency	50 Hz / 60 Hz
DC Connection Type	MC4
Protection Degree	IP65
Cooling Method	Natural convection
Category	Inverter
Adjustable Power Factor Range	0.8 leading - 0.8 lagging
Total Harmonic Distortion (THD)	≤ 3 %
Operating Temperature Range	-25°C to 60°C
Communication	RS485
Efficiency	98%
Protection Level	DC reverse polarity protection, AC overcurrent protection, AC short-circuit protection, Overvoltage protection, Insulation monitoring, Residual current monitoring unit, Arc fault detection