Huawei SUN2000-90KTL User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
Quick Guide
Issue: 08
Part Number: 31509903
Date: 2020-03-15

1Copyright © Huawei Technologies Co., Ltd.
2020. All rights reserved.
1Overview
•The information in this document is subject to change without notice. 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. Operators
should understand the composition and working principles of the grid-tied PV power system and
local standards.
•Before installing the device, read the user manual carefully to get familiar with product
information and safety precautions. Huawei shall not be liable for any consequences caused by
the violation of the storage, transportation, installation, and operation regulations specified in this
document and the user manual.
•Use insulated tools when installing the device. For personal safety, wear proper personal
protective equipment (PPE).
(1) Maintenance compartment door
(2) LED indicators
(3) Host panel
(4) Mounting bracket
(5) Heat sink
(6) Communications cable glands
(COM1/COM2/COM3)
(7) USB port (USB)
(8) Auxiliary handles
(9) DC input terminals (+/
–; controlled by DC
SWITCH 1)
(10) DC input terminals (+/
–; controlled by DC
SWITCH 2)
(11) AC output cable gland (AC OUTPUT)
(12) Reserved cable gland (RESERVE)
(13) DC switch 1 (DC SWITCH1)
(14) DC switch 2 (DC SWITCH 2)

2
Recommended: 600 mm ≤ bottom space ≤ 730 mm
2Installation Requirements
Dimensions
Angle Space
3Installing the SUN2000
•The M12x40 bolt assemblies are delivered with
the SUN2000. If the bolt assembly length does
not meet the installation requirements, prepare
M12 bolt assemblies by yourself and use them
together with the delivered M12 nuts.
•Before installing the mounting bracket, remove
the security Torx wrench from the mounting
bracket and save it for later use.
•This document introduces how to install the
SUN2000 on a support as an example. For
details about wall-mounted installation, see the
user manual.
Position for bundling a
security Torx wrench

3
1. Install the mounting bracket.
3. Install the SUN2000 on the mounting
bracket. 4. Tighten security Torx screws.
You are advised to apply anti-rust paint
on the hole positions for protection.
2. For the SUN2000-90KTL-H2 used in Australia, install the delivered screw for locking each DC
switch.

4
No.
Cable
Type
Recommended
Conductor
Cross
-
Sectional Area
Outer
Diameter
1
PE cable
Outdoor copper cable and M8
OT/DT terminals
≥ 16 mm
2
N/A
2
(Optional) Tracking
system power cable
Three
-
core outdoor copper cable
with dual
-layer protection
6 mm
2
14
–18 mm
3
AC output power cable
•
If you connect a PE cable to
the PE point on the enclosure,
you are advised to use a
three-core (L1, L2, and L3)
outdoor copper cable and
M10 OT/DT terminals (L1, L2,
and L3).
•
If you connect a PE cable to
the PE point in the
maintenance compartment,
you do not need to prepare a
PE cable separately but are
advised to use a four-core
(L1, L2, L3, and PE) outdoor
copper cable, M10 OT/DT
terminals (L1, L2, and L3),
and M8 OT/DT terminals (PE).
•
L1, L2, L3:
35 mm2
•
PE: ≥ 16
mm2
24
–57 mm
4
DC input
power
cable
Amphenol
UTX PV
Connectors
PV cable that meets the 1500 V
standard
4
–6 mm2
4.5
–7.8 mm
MC4 EVO2
PV
Connectors
4
–6 mm2
4.7
–6.4 mm
5
RS485 communications
cable (connected to a
terminal block;
recommended)
Multi
-paired, individually foil
shielded cable that complies with
local standards and M6 OT
terminals
1
mm2
14
–18 mm
RS485 communications
cable (connected to a
network port)
CAT 5E outdoor shielded
network cable with internal
resistance ≤ 1.5 ohms/10 m, as
well as the shielded RJ45
connector
N/A
7
–9 mm
Preparing Cables
4.1
4Electrical Connections
Connect cables in accordance with the local installation laws and regulations.

5
Reserved PE point
Installing the PE Cable (on the Enclosure)
4.2
•It is recommended that the PE cable
be connected to a nearby PE point.
Connect the PE points of all
SUN2000s in the same PV array to
ensure equipotential connections to PE
cables.
•To enhance the corrosion resistance of
a ground terminal, you are advised to
apply silica gel or paint on it after
connecting the PE cable.
1. Loosen the screws on the maintenance
compartment door.
Opening the Maintenance Compartment Door
4.3
•Do not open the host panel of the SUN2000.
•Before opening the SUN2000 maintenance compartment door, turn off the downstream AC
output switch and two DC switches at the bottom.
•Do not open the maintenance compartment door in rainy or snowy days. If you must, take
protective measures to prevent rain or snow from entering the maintenance compartment.
•Do not leave unused screws in the maintenance compartment.
2. Open the maintenance compartment door
and adjust the support bar.
3. Remove the cover and hang it on the hook of the enclosure door.

6
Installing the AC Output Power Cable
4.4
•This document introduces how to install the four-core AC output power cable, which can be a
reference for installing the three-core cable. The three-core cable does not need a PE cable
installed in the maintenance compartment.
•To avoid damaging the rubber liner, do not route a cable with a crimped OT/DT terminal directly
through it.
•Do not adjust the cable when the sealing nut is tightened. Otherwise, the rubber liner will shift,
which affects the IP rating of the device.
•Ensure that AC terminations are secured. Failing to do so may cause the SUN2000 to
malfunction or damage to its terminal block by issues such as overheating.
•Sufficient slack should be provided in the PE cable to ensure that the last cable bearing the
force is the PE cable when the AC output power cable bears pulling force due to force majeure.
After the AC output power cable is installed, seal the cable gland.

7
Number of
PV Strings
Terminal Selection
Number of
PV Strings
Terminal Selection
6
Connects to routes 2, 4, 6, 8, 10,
and 12.
7
Connects to routes 2, 4, 6, 8, 9, 10,
and 12.
8
Connects to routes 1, 2, 4, 6, 8, 9,
10, and 12.
9
Connects to routes 1, 2, 4, 6, 7, 8, 9,
10, and 12.
10
Connects to routes 1, 2, 4, 6, 7, 8, 9,
10, 11, and 12.
11
Connects to routes 1, 2, 3, 4, 6, 7, 8,
9, 10, 11, and 12.
For example, if the number of input routes is 6–11, the recommended DC input terminals are as
follows:
1. Use the positive and negative metal contacts and DC connectors delivered with the SUN2000.
Using other positive and negative metal contacts and DC connectors may result in serious
consequences. The caused device damage is not covered under any warranty.
2. Before connecting the DC input power cable, label the cable polarities to ensure correct cable
connections. Otherwise, the SUN2000 may be damaged.
3. Measure the voltage at the DC input end using a multimeter. If the voltage is a negative value,
the DC input polarity is incorrect. Correct the polarity. If the voltage is greater than 1500 V, too
many PV modules are configured to the same string. Remove some PV modules.
4. If the DC input power cable is reversely connected and the DC switch is turned on, do not
perform operations on the DC switch or the positive/negative connectors immediately. Otherwise,
the device may be damaged. The caused device damage is not covered under any warranty.
Wait until the night when solar irradiance declines and the PV string current drops to below 0.5 A.
Then turn the two DC switches to the OFF position, remove the positive and negative DC input
power connectors, and correct the polarity of the DC input power cable.
•Ensure that the PV module output is well insulated to ground.
•Before inserting the positive and negative connectors respectively into the positive and negative
DC input terminals of the SUN2000, ensure that the DC voltage does not exceed 1500 V DC using
a multimeter and that the cable polarities are correct. Otherwise, the SUN2000 will be damaged.
Installing the DC Input Power Cable
4.5
The SUN2000 provides 12 DC
input terminals, which are
controlled by its two DC switches.
DC SWITCH 1 controls DC input
terminals 1–6 (MPPT1–3) and DC
SWITCH 2 controls DC input
terminals 7–12 (MPPT4–6).
When DC inputs are not fully configured, the input terminals should meet the following requirements:
1. Evenly distribute DC input power cables on the DC input terminals controlled by the two DC
switches.
2. Maximize the number of connected MPPT circuits.

8
Positive connector
Negative
connector
Positive metal contact
Negative metal contact Ensure that the cable
cannot be pulled out after
being crimped.
UTXTC0003
(Amphenol)
Click
Ensure that the
locking nut is
secured.
UTXTWA001
(Amphenol)
Click
DC voltage
measurement range
≥ 1500 V DC
Amphenol UTX PV Connectors
Crimp the metal contacts using crimping tool UTXTC0003 (Amphenol, recommended) or
UTXTC0002 (Amphenol).
MC4 EVO2 PV Connectors
13001462
(STAUBLI)
32.6020-22100-HZ
(STAUBLI)
Positive connector
Negative
connector
Positive metal contact
Negative metal contact Ensure that the cable
cannot be pulled out after
being crimped.
Click
Ensure that
the locking
nut is
secured.
Click
DC voltage
measurement
range ≥ 1500 V DC

9
Installing the RS485 Communications Cable
4.6
1. When routing the communications cable, separate it from power cables and connect the shield
layer to the ground point to prevent communication from being affected.
2. The RS485 communications cable can connect to a terminal block or an RJ45 network port.
Select one in actual installation.
Connecting to a Terminal Block (Recommended)
No.
Definition
Description
No.
Definition
Description
1
RS485A IN
RS485A, RS485
differential signal+
2
RS485A OUT
RS485A, RS485
differential signal+
3
RS485B IN
RS485B, RS485
differential signal
–
4
RS485B OUT
RS485B, RS485
differential signal
–
After the RS485 communications cable is installed, seal the cable gland.

10
No.
Definition
No.
Definition
1, 4
RS485A, RS485 differential signal+
2, 5
RS485B, RS485 differential signal
–
Connecting to an RJ45 Network Port
After the RS485 communications cable is installed, seal the cable gland.
(Optional) Installing the Tracking System Power Cable
4.7
•The tracking system should be equipped with an overcurrent protective device/component. The
power cable between the device/component and wiring terminal should be no longer than 2.5 m.
•The tracking system is powered by the three-phase AC power grid with a rated voltage of 800 V.
•Keep inflammable materials away from the power cable.
•The power cable must be protected with a conduit to prevent short circuits caused by insulation
layer damage.

11
5Closing the Maintenance Compartment Door
1. Install the cover and adjust the support bar. 2. Close the maintenance compartment door.
If the screws on the enclosure door are lost, obtain the spare screws from the fitting bag tied at
the enclosure bottom.
After the tracking system power cable is installed, seal the cable gland.

12
7Powering On the System
1. Turn on the AC switch between the SUN2000 and the power grid.
2. Turn the two DC switches at the bottom of the SUN2000 to the ON position.
3. Observe the LED indicators to check the SUN2000 operating status.
Before turning on the AC switch between the SUN2000 and the power grid, check that the AC
voltage is within the specified range using a multimeter.
Indicator
Status
Description
PV connection
indicator
Steady green
At least one PV string is properly connected, and the DC input
voltage of the corresponding MPPT circuit is at least 600 V.
Off
The SUN2000 disconnects from all PV strings, or the DC input
voltage of each MPPT circuit is less than 600 V.
Grid
-tied
indicator
Steady green
The SUN2000 is in grid
-tied mode.
Off
The SUN2000 is not in grid
-tied mode.
Communications
indicator
Blinking green
The SUN2000 receives communications data normally.
Off
The SUN2000 receives no communications data for 10s.
6Verifying Installation
No.
Acceptance Criteria
1
The SUN2000 is installed correctly and securely.
2
The DC switches and downstream AC switch are set to OFF.
3
All cables are connected correctly and securely.
4
Used cable glands are sealed and sealing nuts are tightened.
5
Unused terminals and ports are locked by watertight caps.
6
The installation space is proper, and the installation environment is clean and tidy, without
foreign matter.
7
The AC terminal cover is reinstalled.
8
The maintenance compartment door is closed and the door screws are tightened.
For the SUN2000-90KTL-H2 used in Australia, remove the screw from a DC switch before turning
on the DC switch. Keep the screw properly for future use after the SUN2000 is powered off.

13
Local Commissioning on the App
8
1. The FusionSolar app is recommended when the SUN2000 is connected to the FusionSolar
hosting cloud. The SUN2000 app is recommended when the SUN2000 is connected to other
management systems.
2. The SUN2000 or FusionSolar app (app for short) is a mobile phone app that communicates
with the SUN2000 over a WLAN/Bluetooth module or a USB data cable to allow for querying
alarms, setting parameters, and performing routine maintenance as an easy-to-use
maintenance platform.
3. Download the app as follows:
4. Connect a USB data cable, a Bluetooth module, or a WLAN module to the USB port of the
SUN2000 to implement the communication between the SUN2000 and the app.
5. The screenshots in this document correspond to FusionSolar app version 2.5.7 (Android).
WLAN or Bluetooth Connection USB Data Cable Connection
Indicator
Status
Description
Alarm/
Maintenance
indicator
Alarm status
The red indicator is blinking at long
intervals (on for 1s and then off for 4s).
A warning alarm is
generated.
The red indicator is blinking at short
intervals (on for 0.5s and then off for
0.5s).
A minor alarm is generated.
Steady red
A major alarm is generated.
Local
maintenance
status
The green indicator is blinking at long
intervals (on for 1s and then off for 1s).
Local maintenance is in
progress.
The green indicator is blinking at short
intervals (on for 0.125s and then off for
0.125s).
Local maintenance failed.
Steady green
Local maintenance
succeeded.
•FusionSolar app: Log in to Google Play, search for FusionSolar
or scan the QR code to download and install the FusionSolar app.
The app version is 2.5.7 (Android) or later.
•SUN2000 app: Log in to Huawei AppGallery
(https://appstore.huawei.com), search for SUN2000, and
download the app installation package. Alternatively, scan the QR
code (https://solar.huawei.com/~/media/Solar/APP/SUN2000.apk)
to download the app installation package. The app version is
3.2.00.003 (Android) or later.
SUN2000
FusionSolar

14
Scenario in Which the SUN2000 Is Connected to the FusionSolar
Hosting Cloud
8.1
1. Run the FusionSolar app and tap Device Commissioning.
With Network Access
Without Network Access
2. Log in to access the Device Commissioning screen.
•When the WLAN connection is used, the initial name of the WLAN hotspot is Adapter-WLAN
module SN, and the initial password is Changeme.
•The initial password for Common User, Advanced User, and Special User is 00000a.

15
•Use the initial password upon first power-on and change it immediately after login. To ensure
account security, change the password periodically and keep the new password in mind. Not
changing the initial password may cause password disclosure. A password left unchanged for a
long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed.
In these cases, the user is liable for any loss caused to the PV plant.
•If you log in to the app after
the device connects to the
app for the first time or
factory defaults are
restored, the quick settings
screen will be displayed.
•Set the correct grid code
based on the application
area and scenario of the
solar inverter.
Scenario in Which the SUN2000 Is Connected to Other Management
Systems
8.2
Run the SUN2000 app. The subsequent operation procedure is the same as that for accessing the
device commissioning screen of the FusionSolar app. For details, see step 2 in section 8.1
"Scenario in Which the SUN2000 Is Connected to the FusionSolar Hosting Cloud."

Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang
Shenzhen 518129 People's Republic of China
www.huawei.com