Huawei SUN2000-25KTL-M5 User manual

SUN2000-(12KTL-25KTL)-M5 Series
Quick Guide
Huawei Digital Power Technologies Co., Ltd.
Issue: 02
Part Number: 31500HLD
Date: 2022-09-30

1
1Clearance Requirements
Copyright © Huawei Digital Power Technologies Co., Ltd.
2022. All rights reserved.
•The information in this document is subject to change due to version upgrade or other
reasons. Every effort has been made in the preparation of this document to ensure accuracy
of the contents, but all statements, information, and recommendations in this document do
not constitute a warranty of any kind, express or implied.
•Only qualified and trained electrical technicians are allowed to operate the device. Operation
personnel should understand the system composition and working principles, as well as the
local regulations.
•Before installing the device, read the user manual carefully to get familiar with product
information and safety precautions. Device damage caused by failure to abide by the
storage, transportation, installation, and operation guidelines specified in this document and
the user manual is not covered by the product warranty.
•Before installing the device, check that the package contents are intact and complete against
the packing list. If any damage is found or any component is missing, contact your dealer.
•Use insulated tools and wear proper personal protective equipment (PPE) when installing
the device.
If the installation clearance does not meet the requirements, the inverter power may be derated.
2Device Installation
If cables are not connected immediately after the device is installed, you need to install a junction
box. Otherwise, the airtightness and waterproof performance of the device may be affected.

2
•To ensure that the inverter can be safely disconnected from the power grid when an
exception occurs, connect an AC switch to the AC side of the inverter. Select an appropriate
AC switch in accordance with local industry standards and regulations.
•Connect cables in accordance with local installation laws and regulations.
•The cable colors are for reference only. Select appropriate cables according to the local
standards.
•When routing signal cables, separate them from power cables and keep them away from
strong interference sources to prevent communication from being affected.
•Do not connect loads between the inverter and the AC switch that directly connects to the
inverter. Otherwise, the switch may trip by mistake.
•If an AC switch is used with specifications beyond local standards, regulations, or Huawei's
recommendations, the switch may fail to turn off in a timely manner in case of exceptions,
causing serious faults.
Each inverter must be equipped with an AC output switch. Multiple inverters cannot connect to
the same AC output switch.
No.
Component Description Source
1AC switch Recommended: three-phase
AC circuit breaker
Rated voltage ≥ 415 V AC
Rated current:
•12KTL–20KTL: 40 A
•25KTL: 50 A or 63 A
Preparations
3.1
3Electrical Connections
•Do not connect the neutral wire to the enclosure as a ground cable. Otherwise, electric
shocks may occur.
•Before connecting cables, ensure that the DC SWITCH on the inverter and all the switches
connected to the inverter are set to OFF. Otherwise, the high voltage of the inverter may
result in electric shocks.
Cable Connections
3.2

3
Inner Diameter
Rubber Plug
15 mm
22 mm
26 mm
6 mm
8.6 mm
11 mm
1. Route the cables through the junction box and prepare cable terminals.
Installing AC Output Power Cables and Signal Cables
3.3
If the cable stripping length does not meet the requirements, the airtightness and waterproof
performance of the device may be affected.
2. Install AC output power cables and signal cables. (The following uses the RS485 signal
cables as an example. For details about other signal cables, see the signal definitions of
communications ports.)
Heat-shrink
tubing
Shield
layer

4
Pin
Definition
Function
Description
1GND
Ripple control
GND port for the DIN1 to DIN5 signals
2DIN1
Dry contact for grid scheduling
3DIN2
4DIN3
5DIN4
6DIN5 Rapid shutdown signal+ For the rapid shutdown DI signal or connecting
to the signal cable of an NS protective device
7GND GND -
8 - - -
9485A1 RS485A1 differential signal+ For inverter cascading or connecting to the
RS485 signal port of a SmartLogger
10 485B1 RS485B1 differential signal–
11 485A2 RS485A2 differential signal+ Connecting to the RS485 signal port of a power
meter
12 485B2 RS485B2 differential signal–
3. Align the pin holes at both ends of the junction box with the positioning pins on the inverter
enclosure to ensure that the screw holes on the junction box are aligned.
4. Install the junction box, seal the unused cable holes in the rubber plugs with waterproof
plugs, and tighten the locking caps.

5
•Ensure that the PV module output is well insulated to ground.
•Use the delivered Staubli MC4 metal terminals and DC connectors. Device damage caused by
using other types of metal terminals and DC connectors is not covered by the product
warranty.
•If the open-end wrench slips, the locking nut is tightened.
•If PV strings are configured with optimizers, check the cable polarity by referring to the
Smart PV Optimizer Quick Guide .
•If the DC input power cables are reversely connected, do not perform operations
immediately. 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 rectify the cable connection. Device damage caused by improper operations
is not covered by the product warranty.
Cables are
connected in the
correct polarity,
Voltage ≤ 1100 V
Click
No.
Expected Result
1The inverter is installed correctly and securely.
2Cables are routed properly as required by the customer.
3The Smart Dongle is installed correctly and securely.
4Cable ties are evenly distributed and no burr exists.
5Ground cables are connected correctly and securely.
6The DC SWITCH and all switches connected to the inverter are set to OFF.
7The AC output power cable, DC input power cables, and signal cables are connected
correctly and securely.
8Unused terminals and ports are sealed by watertight caps.
9The installation space is proper, and the installation environment is clean and tidy.
4Verifying the Installation
Connecting DC Input Power Cables
3.4
(Optional) Installing the Smart Dongle and Anti-theft Components
3.5
1. Install the Smart Dongle. For details, see the
Smart Dongle Quick Guide .
2. Install the anti-theft components.
Click

6
6System Commissioning
For details about how to create a plant, see the app quick guide. Scan the QR codes below to
download the app and quick guide.
FusionSolar App Quick Guide
Creating a Plant
6.1
Resetting Password
6.2
1. Check that the AC and DC sides of the inverter are both powered on, and indicators
and are steady green or blinking slowly for more than 3 minutes.
2. Turn off the AC switch, set the DC SWITCH of the inverter to OFF, and wait until all indicators
on the inverter panel turn off.
3. Complete the following operations within 4 minutes:
a. Turn on the AC switch and wait for about 90s or until the inverter indicator blinks.
b. Turn off the AC switch and wait about 30s or until all LED indicators on the inverter
panel turn off.
c. Turn on the AC switch and wait for about 30s or until all LED indicators on the inverter
panel blink and then turn off after about 30s.
a. Wait until the indicator blinks.
b. Connect to the app using the initial WLAN hotspot name (SSID) and initial password
(PSW), which can be obtained from the label on the side of the inverter.
c. On the login page, set a new password and log in to the app.
6. Set router and management system parameters to implement remote management.
You are advised to reset the password in the morning or at night when the solar irradiance is low.
4. Wait until the three green LEDs on the inverter panel blink fast and then the three red
LEDs blink fast, which indicates that the password is restored.
5. Reset the password within 10 minutes. (If no operation is performed within 10
minutes, all parameters of the inverter remain unchanged.)
5Powering On the System
1. At the AC switch between the inverter and the power grid, use a multimeter to measure the
grid voltage and ensure that the voltage is within the operating voltage range of the
inverter. If the voltage is not in the allowed range, check the circuits.
2. Turn on the AC switch.
3. Turn on the DC switch (if any) between the PV strings and the inverter.
4. (Optional) Remove the locking screw next to the DC SWITCH on the inverter.
5. Set the DC SWITCH to ON.
6. Observe the LED indicators to check the status of the inverter.
7. (Optional) Observe the Smart Dongle LED indicator to check the status of the Smart Dongle.

7
Customer Service Contact Information
Region
Country
Email
Tel
Europe
France
eu_inverter_[email protected] 0080033888888
Germany
Spain
Italy
United Kingdom
Netherlands
Other countries For details, visit solar.huawei.com.
Asia Pacific
Australia eu_inverter_[email protected] 1800046639
Turkey [e-mail] -
Malaysia
[e-mail]
0080021686868
/1800220036
Thailand
([phone] (local call
charge)
1800290055 (free in
Thailand)
China solarserv[email protected]om 400-822-9999
Other countries [e-mail] 0060-3-21686868
Japan Japan [email protected].com 0120258367
India India [e-mail] 1800 103 8009
South
Korea South Korea [email protected].com -
North
America
United States eu_inverter_[email protected] 1-877-948-2934
Canada eu_inv[email protected] 1-855-482-9343
Latin
America
Mexico
la_inverter[email protected]m
018007703456
/0052-442-4288288
Argentina 0-8009993456
Brazil 0-8005953456
Chile 800201866 (only for fixed
lines)
Other countries 0052-442-4288288
Middle East
and Africa
Egypt
eu_inverter_[email protected]
08002229000
/0020235353900
UAE 08002229000
South Africa 0800222900
Saudi Arabia 8001161177
Pakistan 0092512800019
Morocco 0800009900
Other countries 0020235353900
7Customer Service Contact Information

Huawei Digital Power Technologies Co., Ltd.
Huawei Digital Power Antuoshan Headquarters
Futian, Shenzhen 518043
People's Republic of China
solar.huawei.com