Huawei SUN2000 3,6KTL-L1 User manual

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HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(2KTL-6KTL)-L1
Quick Guide
Issue: 11
Part Number: 31500DQD
Date: 2023-11-10

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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. You can download this document by scanning the
QR code.
2. Before installing the device, closely read the user manual to get familiar
with product information and safety precautions.
Copyright © Huawei Technologies Co., Ltd. 2023.
All rights reserved.
1Overview
•a: The screw is used to secure the DC switch to prevent accidental startup. The screw is
delivered with the solar inverter.
•b: DC input terminals PV1 and PV2 are controlled by the DC switch.
(1) LED indicators
(2) Front panel
(3) Hanging kit
(4) Mounting bracket
(5) Heat sink
(6) Ventilation valve
(7) Screw hole for the DC
switcha
(8) DC
switchb(DC SWITCH)
(9) DC input terminals (PV1+/PV1
–)
(10) DC input terminals (PV2+/PV2
–)
(11) Battery terminals (BAT+/BAT
–)
(12) Smart Dongle port (4G/FE)
(13) Antenna port (ANT)
(14) COM port (COM)
(15) AC output port (AC)
(16) Ground point
3. Only certified electricians are allowed to operate the device. Operation personnel must wear
proper personal protective equipment (PPE).
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. The device damage caused by the violation of instructions in this document is not covered
under warranty.
6. The cable colors involved in this document are for reference only. Select cables in accordance
with local cable specifications.

2
3
Space Angle
2Installing the Device
Mounting Hole Dimensions
Installation Requirements
2.1
Avoid drilling holes in the water pipes and cables buried in the wall.
1. Install the mounting bracket.
Installing the Solar Inverter
2.2

3
Level
2. (Optional) Install the screw for locking the DC switch.
•M6x60 expansion bolts are delivered with the solar 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 solar inverter are mainly 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 solar inverter.
•In residential areas, do not install the solar inverter on drywalls or walls made of similar
materials which have a weak sound insulation performance because the noise generated by
the solar inverter is noticeable.
•Loosen the nut, flat washer, and spring washer of the expansion bolt at the bottom.
3. Install the solar inverter onto the mounting bracket. 4. (Optional) Install an anti-theft lock.
Prepare an anti-theft lock by yourself. The lock should be suitable for the lock hole diameter
(Ф10 mm) so that it can be installed successfully. An outdoor waterproof lock is recommended.

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Preparing Cables
3.1
•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 the local installation laws and regulations.
•Before connecting cables, ensure that the DC switch of the solar inverter and all the switches
connected to it are set to OFF. Otherwise, the high voltage produced by the solar inverter
may cause electric shocks.
3Connecting Cables
No.
Cable
Type
Conductor Cross
-
Sectional Area Range
Outer Diameter
1
Protective earthing
(PE) cable
Single
-core outdoor
copper cable
4
–10 mm2
N/A
2
AC output power
cable
Two
-core (L and N) or
three
-core (L, N, and
PE) outdoor copper
cable
4
–6 mm2
10
–21 mm
3
DC input power
cable and
(optional) battery
cable
Standard outdoor PV
cable in the industry
4
–6 mm2
5.5
–9 mm
4
(Optional) Signal
cable
Outdoor shielded
twisted pair cable
When cables are
crimped:
0.20–0.35
mm
2
When
cables are not
crimped:
0.20–1mm2
⚫four-
hole rubber
plug: 4–8 mm
⚫two-
hole rubber
plug: 8–11 mm
Prepare cables based on site requirements.
•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.

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No.
Component
Description
Source
1
AC switch
Recommended: a
single
-phase AC circuit
breaker
Rated voltage ≥ 250 V AC
Rated current:
•
16 A (SUN2000-2KTL-L1)
•
25 A (SUN2000-3KTL-L1 and SUN2000-
3.68KTL-L1)
•
32 A (SUN2000-4KTL-L1, SUN2000-
4.6KTL-L1, SUN2000-5KTL-L1, and
SUN2000-6KTL-L1)
Installing the PE Cable
3.2
Ground
point
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.
•Silica gel or paint must be applied around the ground terminal after the PE cable is connected.
•It is recommended that the right ground point be used for grounding. The other ground point
is reserved.
•If FE communication is used, install a WLAN-FE Smart Dongle (SDongleA-05). You need to
purchase the WLAN-FE Smart Dongle by yourself.
•If 4G communication is used, install a 4G Smart Dongle (SDongleA-03). You need to
purchase the 4G Smart Dongle by yourself.
Installing a WLAN Antenna or Smart Dongle
3.3
Smart Dongle port (4G/FE)
Antenna port (ANT)

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Ensure that the WLAN antenna is
installed securely.
WLAN Antenna (WLAN Communication)
(Optional) 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 ohms/10 m) and shielded RJ45 connectors.
4G/FE

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•For details about how to operate the WLAN-FE Smart Dongle SDongleA-05, see
SDongleA-
05 Smart Dongle 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
•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).
•If your Smart Dongle is configured with a SIM card, you do not need to install the SIM card.
The configured SIM card can be used only on the Smart Dongle.
•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.
(Optional) 4G Smart Dongle (4G Communication)
Installing the AC Output Power Cable
3.4
Ensure that the protective layer of the AC output power cable is inside the connector, that the
core wires are totally inserted into the cable hole, and that the cable is connected securely.
Failing to do so may cause device malfunction or damage.

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1. Connect the AC output power cable to the AC connector.
Three-Core Cable (L, N, and PE)
Click
2. Connect the AC connector to the AC output port. Check the route of the AC output power cable.
AC output port (AC)
•The method for connecting a two-core AC output power cable is the same except that the
cable is not connected to PE.
•Strip the insulation layers of the AC output power cable by the recommended length (12–16
mm) to ensure that the cable conductors are completely inside the conductor insertion
points and no insulation layer is pressed into the conductor insertion points. Otherwise, the
device may fail to run properly or be damaged during operation.

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Plug insert
To remove the AC connector,
perform the operations in
reverse order of installing the
AC connector. Then, remove
the plug insert, as shown in
the following figure.
Installing DC Input Power Cables
3.5
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 solar inverter must not exceed maximum input voltage.
4. Before installing DC input power cables, label the cable polarities to ensure correct cable
connections.
5. If DC input power cables are 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 warranty. Wait until the solar irradiance declines at night and the
PV string current reduces to below 0.5 A, and then turn off the DC switch and remove the
positive and negative connectors. Correct the string polarity before reconnecting the PV string
to the solar inverter.
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-22100/19100
PV-MS-HZ
Open-end wrench
If the PV strings are configured with Smart PV Optimizers, refer to the Smart PV Optimizer
Quick Guide to check the cable polarity.