Huawei SUN2000-33KTL-JP User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(33KTL, 40KTL)-JP
Quick Guide
Issue: 05
Part Number: 31507638
Date: 2019-06-10

1Copyright © Huawei Technologies Co., Ltd. 2019. All rights reserved.
1Overview
1. 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.
2. Before device installation, carefully read the SUN2000-(33KTL, 40KTL)-JP User Manual to get
familiar with product information and safety precautions.
3. Only qualified and trained electrical technicians are allowed to operate the device. Operators
should understand the components and functioning of a grid-tied PV power system and be
familiar with relevant local standards.
4. Before installing the device, check that deliverables are intact and complete against the packing
list. If any damage is found or any component is missing, contact the dealer.
5. Use insulated tools when installing the device. For personal safety, wear insulation gloves and
protective shoes.
6. Huawei shall not be liable for any consequence caused by violation of the storage,
transportation, installation, and operation regulations specified in this document and the user
manual.
Waterproof cable connector is abbreviated as connector in the following text.
NOTE
Ports
(1) PV connection indicator
(2) Grid-tied indicator
(3) Communications indicator
(4) Alarm/Maintenance indicator
(5) Maintenance compartment door
(6) Host panel
Inverter front view
(1) Waterproof cable connector (AC OUTPUT 1)
(3) USB port (USB)
(5) DC switch 2 (DC SWITCH 2)
(7) DC input terminals (controlled by DC
SWITCH 1)
(2) Waterproof cable connector (AC OUTPUT 2)
(4) DC switch 1 (DC SWITCH 1)
(6) Waterproof cable connectors
(COM1/COM2/COM3)
(8) DC input terminals (controlled by DC
SWITCH 2)

2
2Installation Requirements
Installation Angle
2.1
Vertical Backward HorizontalUpside down Forward
Installation Space
2.2
For ease of installing the inverter
on the mounting bracket,
connecting cables to the bottom of
the inverter, and maintaining the
inverter in future, it is
recommended that the bottom
clearance be greater than or equal
to 300 mm and less than or equal
to 730 mm. If the site cable is hard,
the space at the bottom is
recommended to be within the
range of 600 mm and 730 mm.
NOTE
Mounting bracket dimensionsChassis dimensions

3
5. Install the inverter on the mounting bracket. 6. Tighten the security torx screws using a
security torx wrench.
1. Remove the security torx wrench from the
mounting bracket and set it aside. 2. Mark hole positions.
3Installing the Inverter
The inverter mounting bracket has four groups of tapped holes, each group containing four
tapped holes. Mark any hole in each group based on site requirements and mark four holes in
total. Two round holes are preferred.
The inverter is delivered with M12x40 screw assemblies. If the screw length does not meet the
installation requirements, prepare M12 screw assemblies by yourself and use them together
with the delivered M12 nuts.
The following describes how to support-mount the inverter as an example. For details about how
to wall-mount the inverter, see the SUN2000-(33KTL, 40KTL)-JP User Manual.
4. Secure the mounting bracket.3. Drill holes. (You are advised to apply anti-rust
paint on the hole positions for protection.)
M12
45 N·m
NOTE

4
Preparations
4.1
4Electrical Connections
Before connecting cables, ensure that all required OT terminals and cables are available. Copper-core
cables with copper wiring terminals are recommended. For the requirements on the cables and terminals
made of other materials, see the SUN2000-(33KTL, 40KTL)-JP User Manual.
No.
Name
Model or
Specifications
Quantity
Function
Description
1
OT
terminal
M6
1 PCS
Connects to a
ground cable.
If you connect ground cables to ground
points on the chassis shell or in the
maintenance compartment, use M6 OT
terminals.
2
OT
terminal
M8
3 PCS
Connects to an AC
output power cable.
N/A
3
Ground
cable
Outdoor
copper
-core
cable
with a
cross
-
sectional
area of
5.5 mm
2
N/A
Connects to a
ground cable.
•
If you choose the ground point on
the chassis shell for connecting a
ground cable, prepare the ground
cable.
•If you choose the ground point in the
maintenance compartment for
connecting a ground cable, use a
four-coreAC output power cable
and do not have to prepare a ground
cable.
4
AC output
power
cable
Outdoor
copper
-core
cable with a
cross
-
sectional
area of 22
mm2
N/A
Connects to an AC
output power cable.
•If you choose the ground point in the
maintenance compartment for
connecting a ground cable, use a
four-core cable. Otherwise, use a
three-core cable.
•
If the inverter adopts RS485, a CV
or CVT cable is recommended.
5
DC input
power
cable
PV1
-F cable
with a cross
-
sectional area
of 3.5
mm2
N/A
Connects to a DC
input power cable.
N/A
6
Communic
ations
cable
Communication
s cable
with a
cross
-
sectional
area of 1
mm2
N/A
Connects to an
RS485
communications
cable over a
terminal block.
•
If RS485 communication is used,
prepare the RS485 communications
cable.
•
An RS485 cable can connect to
either a terminal block or an RJ45
network port. It is recommended
that the RS485 cable connect to a
terminal block.
Outdoor
shielded
network cable
CAT 5E
Connects to an
RS485
communications
cable over an RJ45
network port.
7
Cable tie
N/A
Based on site
requirements
Binds cables.
N/A

5
Installing Ground Cables (Using the Ground Point on the Chassis Shell)
4.2
1. Use an outdoor copper cable with a cross-sectional area of at least 5.5 mm2. The ground cable
must be secured.
2. The SUN2000 is grounded in type A or C mode.
3. It is recommended that PE cable of the inverter be connected to the nearest ground point. For a
system with multiple inverters connected in parallel, connect the ground points of all inverters to
ensure equipotential connections to ground cables.
4. To enhance the corrosion resistance of the PE terminal, apply silica gel or paint on it after
connecting the PE cable.
The ground point on the enclosure is preferred to connect to the PE cable for the SUN2000. The
ground point in the maintenance compartment is used for connecting to the ground cable included
in the multi-core AC power cable. For details, see section 4.3 "Installing AC Output Power Cables."
M6
5 N·m
NOTE
OT-M6
PE terminal
Installing AC Output Power Cables
4.3
1. Never open the host panel of the inverter.
2. Before opening the inverter maintenance compartment door, turn off the downstream AC output
switch and the two bottom DC switches.
If the inverter adopts RS485, a CV or CVT cable is recommended.
If you connect a ground cable to the ground point on the chassis shell, you are recommended to
use a three-core outdoor copper-core cable with a cross-sectional area of 22 mm2. If you
connect a ground cable to the ground point in the maintenance compartment, you are
recommended to use a four-core outdoor copper-core cable with a cross-sectional area of 22
mm2.
For more details about cable specifications, see the SUN2000-(33KTL, 40KTL)-JP User Manual.
The AC OUTPUT 1 connector supports the cable with an outer diameter of 37 mm to 44 mm.
The AC OUTPUT 2 connector supports the cable with an outer diameter of 24 mm to 32 mm.
Select an appropriate AC OUTPUT connector based on the cable outer diameter. This
document uses the AC OUTPUT 2 connector as an example to describe how to connect a cable.
NOTE

6
1. Remove the two security torx screws from the
maintenance compartment door using a security
torx wrench. (Set the two screws aside. Use the idle
ground screw on the chassis shell as the standby
screw, and the idle floating nut on the chassis as the
standby floating nut.)
2. Open the maintenance compartment
door and adjust the support bar.
(The support bar is bound to the
chassis base.)
3. Remove the AC terminal cover.
4. Remove an appropriate length of the jacket and insulation layer from the AC output power cable
using a wire stripper. (Ensure that the jacket is in the maintenance compartment.)
a. Three-core cable (excluding the ground cable)
b. Four-core cable (including the ground cable)
OT-M8
U, V, and W
terminals
OT-M6
PE terminal
JacketInsulation layerCore wire

7
5. Insert the exposed core wires into the crimping area of the OT terminal and crimp them using
hydraulic pliers.
6. Wrap the wire crimping area with heat shrink tubing or PVC insulation tape.
If heat shrink tubing is used, route the AC output power cable through the heat shrink tubing and
then crimp the OT terminal. Ensure that the area wrapped by the heat shrink tubing does not
exceed the crimping area of the OT terminal.
7. Remove the locking cap from the AC OUTPUT 2 connector at the inverter bottom and then
remove the plug from the cap.
8. Route the AC output power cable through the locking cap and then the AC OUTPUT 2 connector
at the inverter bottom.
9. Connect the AC output power cable to the AC terminal block, and then secure the nuts using a
13 mm socket wrench with an extension pole. If you connect a ground cable to the ground point
in the maintenance compartment, tighten the ground screw using a 10 mm socket wrench with
an extension pole.
Ensure that the AC output power cable is connected securely. Otherwise, the inverter may fail to
operate or experience a fault that will damage the terminal block. For example, the inverter may
generate heat during operation due to unreliable connection.
If the SUN2000 is insecurely installed and the AC output power cable bears the pulling force,
ensure that the last cable bearing the force is the PE cable.
If a waterproof connector is not properly sealed, water or foreign matter could enter the
maintenance compartment and damage the SUN2000.
10.Use a torque wrench with an open end of 52 mm to tighten the locking cap to a torque of 7.5 N·m,
and seal the waterproof connector.
a. Three-core cable (excluding the ground cable) b. Four-core cable (including the ground cable)
M8
8 N·m M8 8 N·m
M6
5 N·m

8
Installing DC Input Power Cables
4.4
Selecting DC input terminals
The inverter provides two DC switches, namely,
DC SWITCH 1 and DC SWITCH 2. DC
SWITCH 1 controls the first to the fourth routes
of DC input terminals, while DC SWITCH 2
controls the fifth to the eighth routes of DC
input terminals.
NOTE
Number of Inputs
SUN2000
1
Connects to any route.
2
Connects to routes 1 and 5.
3
Connects to routes 1, 3, and 5.
4
Connects to routes 1, 3, 5, and 7.
5
Connects to routes 1, 2, 3, 5, and 7.
6
Connects to routes 1, 2, 3, 5, 6, and 7.
7
Connects to routes 1, 2, 3, 4, 5, 6, and 7.
8
Connects to routes 1, 2, 3, 4, 5, 6, 7, and 8.
•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 inverter, check that the DC voltage does not exceed 1100 V DC using
a multimeter and that the cables are connected correctly. Otherwise, the inverter will be
damaged.
1. Use the positive and negative metal contacts and DC connectors supplied with the SUN2000.
Using other models of positive and negative metal contacts and DC connectors may result in
serious consequences. The caused device damage is not covered under any warranty or
service agreement.
2. The metal contacts supplied with the DC connectors are either cold forming contacts or
stamping forming contacts. Crimp the metal cold forming contacts using crimping tool
UTXTC0005 (Amphenol) or H4TC0001 (Amphenol). Crimp the metal stamping forming contacts
using crimping tool H4TC0003 (Amphenol) or H4TC0002 (Amphenol). Choose the crimping
tools that fit the metal contacts.
3. Before connecting DC input power cables, label the cable polarities to ensure correct cable
connections. If the cables are connected incorrectly, the inverter may be damaged.
4. Insert the crimped metal contacts 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.
5. Connect the positive and negative connectors to the appropriate positive and negative DC input
terminals. Then pull the DC input power cables to ensure that they are connected securely.
6. If the DC input power cable is reversely connected, do not operate the DC switches and positive
and negative connectors immediately. Otherwise, the SUN2000 will be damaged. The caused
equipment damage is beyond the warranty scope. Wait until the solar irradiance declines at
night and the PV string current reduces to below 0.5 A. Then, turn off the two DC switches,
remove the positive and negative connectors, and rectify the connection of the DC input power
cable.

9
Positive connector
Negative
connector
Positive metal contact
Positive metal contact
Recommended: PV cable
(PV1-F) with a cross-
sectional area of 3.5 mm2.
Ensure that the cable
cannot be removed after
crimped. Click
Ensure
that the
locking nut
is secured.
H4TW0001
(Amphenol)
UTXTC0005 (Amphenol)
Ensure that cables
are connected
correctly and that
the voltage does not
exceed 1100 V DC.
Installing a DC input power cable (using metal cold forming contacts)
Positive connector
Negative
connector
Positive metal contact
Negative metal contact
Recommended: PV cable
(PV1-F) with a cross-
sectional area of 3.5 mm2.
Ensure that the cable
cannot be removed after
crimped. Click
Ensure
that the
locking nut
is secured.
H4TW0001
(Amphenol)
H4TC0003 (Amphenol)
Ensure that cables
are connected
correctly and that
the voltage does not
exceed 1100 V DC.
Installing a DC input power cable (using metal stamping forming contacts)

10
Installing RS485 Communications Cables
4.5
1. When routing communications cables, separate communications cables from power cables to
prevent communication from being affected.
2. An RS485 cable can connect to either a terminal block or an RJ45 network port. It is
recommended that the RS485 cable connect to a terminal block.
Connecting to a terminal block (recommended)
You are advised to use a communications cable with the conductor cross-sectional area of 1 mm2
and outer diameter in the range of 14 mm to 18 mm.
1. Remove an appropriate length of the jacket and core wire insulation layer from the
communications cables using a wire stripper.
2. Remove the locking caps from the COM1 and COM2 connectors at the inverter bottom and
then remove the plugs from the caps.
3. Route the communications cables through the locking caps, and then the COM1 (RS485 IN)
and COM2 (RS485 OUT) connectors at the inverter bottom.
4. Remove the terminal base from the terminal block, and connect the communications cable to
the terminal base.
No.
Port Definition
Description
5
RS485A IN
RS485A, RS485 differential signal +
6
RS485A OUT
RS485A, RS485 differential signal +
7
RS485B IN
RS485B, RS485 differential signal
–
8
RS485B OUT
RS485B, RS485 differential signal
–

11
When connecting the shielded cables, choose whether to crimp the OT terminal based on site
requirements.
If a waterproof connector is not properly sealed, water or foreign matter could enter the
maintenance compartment and damage the SUN2000.
5. Install the terminal base on the terminal block, and
connect the shield layers to the ground point. 6. Bind the communications cables.
NOTE
7. Use a torque wrench with an open end of 33 mm to tighten the locking cap to a torque of 7.5
N·m, and seal the waterproof connector.
No.
Color
Pin Definition
1
White
-and-orange
RS485A, RS485 differential signal +
2
Orange
RS485B, RS485 differential signal
–
3
White
-and-green
N/A
4
Blue
RS485A, RS485 differential signal +
5
White
-and-blue
RS485B, RS485 differential signal
–
6
Green
N/A
7
White
-and-brown
N/A
8
Brown
N/A
1. Insert the wires of the network cable
to the RJ45 connector in sequence.
2. Crimp the RJ45 connector using a
crimping tool.
RJ45 network port connection
You are recommended to use a CAT 5E outdoor shielded network cable with an outer diameter
less than 9 mm and internal resistance not greater than 1.5 ohms/10 m, as well as a shielded RJ45
connector.
3. Remove the locking cap from the COM1 connector at the inverter bottom and then remove the
plug from the cap.

12
4. Route the communications cables through the locking cap and then the COM1 connector at the
inverter bottom.
7. Use a torque wrench with an open end of 33 mm to tighten the locking cap to a torque of 7.5
N·m, and seal the waterproof connector.
6. Bind the communications cables.
5. Insert the RJ45 connectors into the RJ45 network
ports in the maintenance compartment of the inverter.
1. Install the AC terminal cover. 2. Retrieve the support bar.
9
3. Close the maintenance
compartment door. Tighten the
two screws on the maintenance
compartment door using a
security torx wrench to a torque
of 5 N· m.
5Closing the Maintenance Compartment Door
If a waterproof connector is not properly sealed, water or foreign matter could enter the
maintenance compartment and damage the SUN2000.
NOTE

13
7Powering On the System
1. Switch on the AC switch between the inverter and the power grid.
2. Ensure that the DC switches at the inverter bottom are ON.
3. (Optional) Measure the temperatures at the joints between the DC terminals and the connectors
using a point-test thermometer.
Before switching on the AC switch between the inverter and the power grid, use a multimeter to
check that the AC voltage is within the operating voltage range of the inverter.
4. Observe the indicators to check the inverter operating status.
To ensure that the DC terminals are in good contact, check the temperatures at the joints between
DC terminals and connectors after the SUN2000 has been running for a period of time. Ensure that
the temperature rise does not exceed 40°C.
NOTE
6Verifying the Installation
1.
The inverter is installed correctly and securely.
Yes
□No □N/A □
2.
The DC switches and downstream AC output switch are OFF.
Yes
□No □N/A □
3.
Ground cables are connected correctly and securely, without open circuits
or short circuits.
Yes
□No □N/A □
4. AC output power cables are connected correctly and securely, without open
circuits or short circuits.
Yes
□No □N/A □
5.
DC input power cables are connected correctly and securely, without open
circuits or short circuits.
Yes
□No □N/A □
6.
RS485 communications cables are connected correctly and securely.
Yes
□No □N/A □
7.
All the connectors used at the bottom of the chassis shell are sealed.
Yes
□No □N/A □
8.
The AC terminal cover is reinstalled.
Yes
□No □N/A □
9.
The maintenance compartment door is closed and the door screws are
tightened.
Yes
□No □N/A □
10.
Idle DC input terminals are sealed.
Yes
□No □N/A □
11.
The idle USB port is plugged with waterproof plugs.
Yes
□No □N/A □
12.
Idle AC OUTPUT and COM connectors are plugged and the locking caps
are tightened.
Yes
□No □N/A □

14
Indicator
Status
Meaning
PV connection
indicator
Green on
At least one PV string is properly
connected, and the DC input voltage of
the corresponding
MPPT
circuit is higher
than or equal to 200 V.
Green off
The inverter disconnects from all PV
strings, or the DC input voltage of each
MPPT
circuit is less than 200 V.
Grid
-tied indicator
Green on
The inverter is connected to the power
grid.
Green off
The inverter is not connected to the
power grid.
Communications
indicator
Blinking green (on for 0.5s and then
off for 0.5s)
The SUN2000 receives communications
data normally.
Green off
The SUN2000 receives no
communications data for 10s.
Alarm/Maintenance
indicator
Alarm status
Blinking red at long
intervals (on for 1s and
then off for 4s).
A warning alarm is generated.
Blinking red 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
Blinking green at long
intervals (on for 1s and
then off for 1s)
Local maintenance is in progress.
Blinking green at short
intervals (on for 0.125s
and then off for 0.125s)
Local maintenance fails.
Steady green
Local maintenance succeeds.

15
•The screenshots in this document correspond to app version 2.2.00.050
(Android).
•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.
•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.
•Set the correct grid code based on the application area and scenario of
the solar inverter.
Login Page
SUN2000 App
8
1. The SUN2000 app is a mobile phone app that communicates with the SUN2000 monitoring
system over a USB data cable, a Bluetooth module, or a WLAN module. As a convenient local
monitoring and maintenance platform, it supports alarm query, parameter settings, and routine
maintenance. The app name is SUN2000.
2. Access Huawei application store (https://appstore.huawei.com), Google Play
(https://play.google.com), or App Store (iOS), search for SUN2000, and download the app
installation package.
3. 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.
iOS and Android Android
WLAN or Bluetooth Connection USB Data Cable Connection
Select Connection
Mode Select User Quick Settings
Function Menu
NOTE

16
Viewing Active Alarms
9FAQ
Connect a USB data cable or a Bluetooth module to the USB port of the inverter to implement the
communication between the inverter and the APP. After login, tap Alarm on the main menu to
display the Active Alarm screen.
10 Common Faults and Troubleshooting
Symptom
Possible Cause
Suggestion
String
Reverse
The PV string cables are
connected reversely during the
inverter installation.
Wait until the solar irradiance declines at night and the
PV string current reduces to below 0.5 A. Then, turn
off the two DC switches, remove the positive and
negative connectors, and rectify the connection of the
DC input power cable.
Appendix 1: Power Grid Codes (SUN2000-33KTL-JP)
No. Power Grid Code Description No. Power Grid Code Description
1Japan standard
(50Hz)Japan power grid (MV480-50 Hz) 2Japan standard (60 Hz) Japan power grid (MV480-60 Hz)
3Japan standard
(MV420-50Hz)Japan power grid (MV420-50 Hz) 4Japan standard (MV420-60Hz)Japan power grid
(MV420-60 Hz)
5Japan standard
(MV440-50Hz)Japan power grid (MV440-50 Hz) 6Japan standard (MV440-60Hz)Japan power grid (MV440-60 Hz)
Appendix 2: Power Grid Codes (SUN2000-40KTL-JP)
No. Power Grid Code Description No. Power Grid Code Description
1Japan standard
(50Hz)Japan power grid (MV480-50 Hz) 2Japan standard (60Hz)Japan power grid (MV480-60 Hz)
3Japan standard
(MV440-50Hz)Japan power grid (MV440-50 Hz) 4Japan standard (MV440-60Hz)Japan power grid (MV440-60 Hz)
Grid codes are subject to change. The listed codes are for your reference only.
NOTE

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