Huawei SUN2000-3KTL-M1 User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(3KTL-12KTL)-M1
Quick Guide
Issue: 01
Part Number: 31508308
Date: 2020-09-15

1
1Product Description
Copyright © Huawei Technologies Co., Ltd. 2020. All
rights reserved.
1. The information in this document is subject to change due to version upgrades 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. You can download this document
by scanning the QR code.
2. Before installing the device, read the user manual carefully to get familiar with product
information and safety precautions.
3. Only qualified and trained electrical technicians are allowed to operate the device. Operation
personnel should understand the composition and working principles of the grid-tied PV
power system and local regulations.
4. 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.
5. Use insulating tools when installing the device. For personal safety, wear proper personal
protective equipment (PPE).
6. 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.
1Product Description
(1) LED
(2) Front panel
(3) Hanging kit
(4
) Mounting bracket
(5
) Heat sink
(6
) Ventilation valve
(7
) Ground screw
(8
) AC output port (AC)
(9
) Communication port (COM)
(10
) Smart Dongle port (GPRS/4G/WLAN-FE)
(11
) Battery terminals (BAT+/BAT–)
(12
) DC input terminals (PV2+/PV2–)
(13
) DC input terminals (PV1+/PV1–)
(14) DC switch (DC SWITCH)
(15)
Screw hole for the DC switch

2
Installation Requirements
2.1
Dimensions
2Installing the Equipment
Two M6 screw holes are reserved on both left and right sides of the inverter for installing an
awning.
SpaceAngle

3
Installing the Inverter
2.2
When drilling holes, avoid the water pipes and power cables buried in the wall.
1. Install the mounting bracket.
•M6x60 expansion bolts are delivered with the inverter. If the length and number of the bolts
do not meet installation requirements, prepare M6 stainless steel expansion bolts by yourself.
•The expansion bolts delivered with the inverter are used for solid concrete walls. For other
types of walls, prepare bolts by yourself and ensure that the wall meets the load bearing
requirements of the inverter.
•Loosen the nuts, flat washers, and spring washers of the two expansion bolts.
Level
2. (Optional) Install the screw for locking the DC switch.
•The screws for DC switches are delivered with solar inverters. According to Australian
standards, the screws are used to secure DC switches (DC SWITCH) to prevent them from
being turned on by mistake.
•For the model used in Australia, perform this step to meet the local standards.

4
•Connect cables in accordance with the local installation laws and regulations.
•Before connecting cables, ensure that the DC switch on the inverter and all the switches
connecting to the inverter are set to OFF. Otherwise, the high voltage of the inverter may
result in electric shocks.
Preparing for Installation
3.1
3Electrical Connections
Prepare an anti-theft lock suitable for the lock hole diameter (Ф8 mm) and ensure that the lock
can be installed successfully. An outdoor waterproof lock is recommended.
3. Install the inverter on the mounting bracket. 4. (Optional) Install an anti-theft lock.
No.
Item
Type
Specifications
1
PE cable
Single
-core outdoor
copper cable
Conductor cross
-sectional
area ≥ 4
mm2
2
AC output power cable
O
utdoor copper cable
•
Conductor cross-
sectional area: 4–6mm2
•
Cable outer diameter:
10–21 mm
3
DC input power cable and (optional)
battery cable
Standard outdoor PV
cable in the
industry
(recommended model:
PV1
-F)
•
Conductor cross-
sectional area: 4–6 mm2
•
Cable outer diameter:
5.5–9 mm
4
(Optional) RS485 communications
cable (used
to cascade inverters or
connect
to the RS485 signal port on
the
SmartLogger)
Two
-core outdoor
shielded twisted pair
cable
•
Conductor cross-
sectional area: 0.2–1
mm2
Note
: When devices such
as the Smart Power
Sensor and the energy
storage device are both
connected to the
inverter, use 0.2–0.5
mm2cords.
•
Cable outer diameter: 4
–
11 mm
5
(Optional) RS485 communications
cable (used to connect to the RS485
signal port on devices such as the
Smart Power Sensor and the energy
storage device
)
6
(Optional) Rapid shutdown switch
signal cable
7
(Optional) Grid scheduling signal cable
8
(Optional) Grid scheduling signal cable
Five
-
core outdoor cable

5
Installing the PE Cable
3.2
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks may
occur.
•The PE point at the AC output port is used only as a PE equipotential point, and cannot
substitute for the PE point on the enclosure.
•It is recommended that silica gel or paint be used around the ground terminal after the PE
cable is connected.
Installing the AC Output Power Cable
3.3
Ensure that the protection layer of the AC output power cable is inside the connector, the core
wires are totally inserted into the cable hole, and the cable is connected securely. Failing to do
so may cause device malfunction or damage.
1. Connect the AC output power cable to the AC connector.
Stripping requirements

6
Five-Core Cable (L1, L2, L3, N, and PE)
Click
2. Connect the AC connector to the AC output port.
AC output port (AC)
3. Check the route of the AC output power cable.
•This section describes how to connect a five-core AC output power cable to an AC connector.
•A three-core AC output power cable can be connected similarly. The three-core cable (L1, L2,
and L3) is not connected to the neutral wire or PE wire.
•A four-core or five-core AC output power cable can be connected similarly. The four-core
cable (L1, L2, L3, and PE) is not connected to the N wire, and the four-core cable (L1, L2, L3,
and N) is not connected to the PE wire.

7
Installing the DC Input Power Cable
3.4
1. Ensure that the PV module output is well insulated to ground.
2. Use the Staubli MC4 positive and negative metal terminals and DC connectors supplied with
the solar inverter. Using incompatible positive and negative metal terminals and DC
connectors may result in serious consequences. The caused device damage is not covered
under warranty.
3. The DC input voltage of the SUN2000 shall not exceed 1100 V DC under any circumstance.
4. Before installing the DC input power cable, label the cable polarities to ensure correct cable
connections.
5. If the DC input power cable is reversely connected, do not operate the DC switch as well as
positive and negative connectors immediately. Failing to do so may cause device damage,
which 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 set the DC switch to the OFF position,
remove the positive and negative connectors, and correct the polarities of the DC input
power cable.
6. If the PV strings are configured with Smart PV Optimizers, refer to the Smart PV Optimizer
Quick Guide to check the cable polarity.
1. Assemble DC connectors.
Click
Positive metal terminal
Negative metal terminal Ensure that the cable cannot
be pulled out after being
crimped.
Positive connector
Negative
connector
Use the wrench
shown in the figure
to tighten the locking
nut. When the
wrench slips during
the tightening, the
locking nut has been
tightened.
Ensure that cable
polarities are correct.
PV-CZM-22100 (Staubli)
PV-MS-HZ
Open-end Wrench
(Staubli)
Correct wiring terminals

8
Click
Pull the DC input power cable
back to ensure that it is
connected securely.
DC input terminals
2. Connect DC input power cables.
(Optional) Installing Battery Cables
3.5
Properly keep the
watertight caps. Pull the battery cable back to
ensure that it is connected
securely.
Battery terminals (BAT+/BAT–)
Assemble the positive and negative connectors by following the instructions in section 3.4
"Installing DC Input Power Cables."
•Use insulated tools when connecting cables.
•Connect battery cables with correct polarity. If battery cables are reversely connected, the
solar inverter may be damaged.
Click

9
Smart Dongle port (GPRS/4G/WLAN-FE)
Installing the Smart Dongle
3.6
WLAN-FE Smart Dongle (FE Communication)
You are advised to use a CAT 5E outdoor shielded network cable (outer diameter < 9 mm; internal
resistance ≤ 1.5 Ω/10 m) and shielded RJ45 connectors.
GPRS/4G/WLAN-FE
•If FE communication is used, install a WLAN-FE Smart Dongle (SDongleA-05). The WLAN-FE
Smart Dongle is delivered with the SUN2000.
•If 4G communication is used, install a 4G Smart Dongle (SDongleA-03). You need to
purchase the 4G Smart Dongle by yourself.
•For details about how to operate the WLAN-FE Smart Dongle SDongleA-05, see
SDongleA-05
Quick Guide (WLAN-FE) .
•For details about how to operate the 4G Smart Dongle SDongleA-03, see
SDongleA-03 Quick
Guide (4G) .
•The quick guide is delivered with the Smart Dongle. You can download them by scanning the
QR code below.
WLAN-FE 4G

10
•If your Smart Dongle is not equipped with a SIM card, prepare a standard SIM card (size: 25
mm x 15 mm) with the capacity greater than or equal to 64 KB.
•Install the SIM card in the arrow direction.
•When reinstalling the cover of the Smart Dongle, ensure that the buckle springs back in
place (you can hear a click).
(Optional) 4G Smart Dongle (4G Communication)
Communications Port Pin Definition
(Optional) Installing the Signal Cable
3.7
•Not all inverter models are delivered with the signal cable connector.
•When laying out the signal cable, separate it from the power cable and keep it away from
strong interference sources to avoid strong communication interference.
•Ensure that the protection layer of the cable is inside the connector, surplus core wires are cut
off from the protection layer, the exposed core wire is totally inserted into the cable hole, and
that the cable is connected securely.
•If the Smart Dongle is configured, you are advised to install the Smart Dongle before
connecting the signal cable.

11
Pin
Definition
Function
Description
Pin
Definition
Function
Description
1
485A1
-1
RS485A,
RS485
differential
signal+
Used to cascade
inverters
or
connect to the
RS485 signal
port on the
SmartLogger
2
485A1
-2
RS485A,
RS485
differential
signal+
Used to cascade
inverters
or
connect to the
RS485 signal port
on the
SmartLogger
3
485B1
-1
RS485B,
RS485
differential
signal
–
4
485B1
-2
RS485B,
RS485
differential
signal
–
5
PE
Shielding
ground
N/A
6
PE
Shielding
ground
N/A
7
485A2
RS485A,
RS485
differential
signal+
Used to connect
to the RS485
signal port on
devices such as
the Smart
Power Sensor
and the energy
storage device
8
DIN1
Digital input
signal 1+
Used to connect
to dry contacts
for grid
scheduling and
used as a
reserved port for
feedback signals
of the Smart
Backup box
9
485B2
RS485B,
RS485
differential
signal
–
10
DIN2
Digital input
signal 2+
Dry contact for
grid scheduling
11
EN
Enabling
signal
Reserved. Used
to connect to
the enable
signal port on
an energy
storage device
12
DIN3
Digital input
signal 3+
13
GND
GND
Used to connect
to the rapid
shutdown DI
signal port or
served as a
reserved port
for the signal
cable of the NS
protection.
14
DIN4
Digital input
signal 4+
15
DIN5
Rapid
shutdown
signal+
16
GND
GND of
D
IN1/DIN2/
D
IN3/DIN4
Used to connect
to the GND of
D
IN1/DIN2/DIN
3/
D
IN4
•When the RS485 communications cables of devices such as the Smart Power Sensor and the
energy storage device are both connected to the inverter, 485A2 (pin 7), 485B2 (pin 9), and
PE (pin 5) are shared.
•When the enable signal cable of the energy storage device and the signal cable of the rapid
shutdown switch are both connected to the inverter, GND (pin 13) is shared.

12
•In the SmartLogger networking scenario, the Smart Dongle cannot be connected.
•A maximum of 80 devices can connect to a single SmartLogger, such as inverters, Smart
Power sensor, and EMI. You are advised to connect fewer than 30 devices to each RS485
route.
•The Smart Power Sensor is necessary for export limitation. Select the Smart Power Sensor
according to the actual project.
•To ensure the system response speed, the Smart Power Sensor is recommended to be
connected to a COM port separately from inverter COM port.
Smart Dongle Networking Scenario
•In the Smart Dongle networking scenario, the SmartLogger cannot be connected.
•The Smart Power Sensor is necessary for export limitation. Only the DTSU666-H Smart
Power Sensor (provided by Huawei) can be used.
•A maximum of 10 devices can be connected to the WLAN-FE and 4G Smart Dongles. The
Smart Power Sensors connected to the RS485A2 and RS485B2 ports are not included.
•If a battery is connected, a maximum of three inverters can be cascaded. Any one of the
inverters can be connected to the battery. (The inverter connected to the Smart Dongle must
be connected to the battery.)
•If the SUN2000-(3KTL–10KTL)-M1 and SUN2000-(2KTL–6KTL)-L1 are cascaded, a maximum
of three inverters can be cascaded.
SmartLogger Networking Scenario

13
1. Connect the signal cable to the signal cable connector.
(Optional) Installing the RS485 Communications Cable (Inverter Cascading)
2. Connect the signal cable connector to the communication port.
Communications port (COM)

14
(Optional) Installing the RS485 Communications Cable (Only Smart Power
Sensor Connected)
1. Connect the signal cable to the signal cable connector.
2. Connect the signal cable connector to the communication port.
Communications port (COM)

15
1. Connect the signal cable to the signal cable connector.
2. Connect the signal cable connector to the Communication port.
(Optional) Installing the RS485 Communications Cable (Smart Power Sensor
and Energy Storage Device Connected)
Communications port (COM)

16
1. Connect the signal cable to the signal cable connector.
(Optional) Installing the Grid Scheduling Dry Contact Signal Cable
2. Connect the signal cable connector to the Communication port.
Communications port (COM)

17
1. Connect the signal cable to the signal cable connector.
2. Connect the signal cable connector to the Communication port.
Communications port (COM)
(Optional) Installing Signal Cables for a Smart Backup Box

18
No.
Acceptance Criteria
1
The inverter is installed correctly and securely.
2
Cables are routed properly as required by the customer.
3
The Smart Dongle is installed correctly and securely.
4
Cable ties are evenly distributed and no burr exists.
5
The PE cable is connected correctly, securely, and reliably.
6
The DC switch and all the switches connected to the inverter are set to the OFF position.
7
The AC output power cable, DC input power cable, battery cable, and signal cable are
connected correctly and securely.
8
Unused terminals and ports are locked by watertight caps.
9
The installation space is proper, and the installation environment is clean and tidy.
4Verifying Installation
5Powering On the System
•Before turning on the AC switch between the solar inverter and the power grid, check that the
AC voltage is within the specified range using a multimeter set to the AC position.
•If the solar inverter is connected to a battery, turn on the DC switch within 1 minute after
turning on the AC switch. If you turn on the DC switch after more than 1 minute, the solar
inverter will shut down and start again.
1. If a battery is connected, turn on the battery switch.
2. Turn on the AC switch between the solar inverter and the power grid.
3. (Optional) Remove the screw for locking the DC switch.
4. Turn on the DC switch (if any) between the PV string and the solar inverter.
5. Turn on the DC switch at the bottom of the solar inverter.

19
6. Observe the LEDs to check the operating status of the inverter.
Type
Status
(
Blinking at long intervals: On
for 1s and then Off for 1s; Blinking
at short Intervals: On for 0.2s and
then Off for 0.2s
)
Meaning
Running
indication
N/A
Steady green
Steady green
The solar inverter is operating in grid
-
tied
mode.
Blinking green
at long
intervals
Off
The DC is on and the AC is off.
Blinking green
at long
intervals
Blinking green at
long intervals
Both the DC and AC are on, and the solar
inverter is not exporting power to the
power grid.
Off
Blinking green at
long intervals
The DC is off and the AC is on.
Off
Off
Both the DC and AC are off.
Blinking red at
short intervals
N/A
There is a DC environmental alarm, such
as an alarm indicating that
High String
Input Voltage
, String Reverse Connection,
or
Low Insulation Resistance.
N/A
Blinking red at
short intervals
There is an AC environmental alarm, such
as an alarm indicating
Grid Undervoltage
,
Grid Overvoltage, Grid
Overfrequency, or
Grid
Underfrequency.
Steady red
Steady red
Fault
.
Communication
indication
N/A
Blinking green at short intervals
Communication is in progress.
Blinking green at long intervals
A mobile phone is connected to the solar
inverter.
Off
There is no communication.
Device
replacement
indication
N/A
Steady red
Steady red
Steady red
The solar inverter hardware is faulty. The
solar inverter needs to be replaced.