Huawei SUN2000-196KTL-H3 Series User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(196KTL-H3, 200KTL-H3, 215KTL-H3)
Series
Quick Guide
Issue: 05
Part Number: 31508120
Date: 2021-09-30

1
Port Description
Copyright © Huawei Technologies Co., Ltd.
2021. All rights reserved.
•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).
1Product Overview
Front View
(1) PV connection indicator
(2) Grid connection indicator
(3) Communication indicator
(4) Alarm/Maintenance
indicator
(5) Host panel cover
(6) Maintenance
compartment

2
(1)
DC input terminals (controlled by DC SWITCH 1
)
(2) DC switch 1
[1] (DC SWITCH 1)
(3) Reset
button 1 (RESET 1)
(4) DC input terminals (controlled by DC
SWITCH 2)
(5)
DC switch 2[1] (DC SWITCH 2)
(6) Reset button 2
(RESET 2)
(7) DC input terminals (controlled by DC SWITCH 3)
(8) DC switch 3
[1] (DC SWITCH 3)
(9) Reset button 3
(RESET 3)
(10)
Ventilation valve
(11)
USB port (USB)
(
12) Communications port (COM)
(
13) Hole for the AC output power cable
(
14) Hole for the tracking system power
cable
Note [1]: If the DC switch rotating handle is at the position , the DC switch is not
completely closed and may not be automatically switched off.
SUN2000 Dimensions
Mounting Bracket Dimensions

3
Installation Angle
2.1
2Installation Requirements
Installation Space
2.2
•The M12x40 bolt assemblies are
delivered with the SUN2000 (bound to
the mounting bracket). 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.
•This document introduces how to install
the SUN2000 on a support as an
example. For details about wall-mounted
installation, see the user manual.
•Before installing the mounting bracket,
remove the security Torx wrench from
the mounting bracket and save it for
later use.
3Installing the SUN2000
The clearance at the bottom must
meet the requirements on the
bending radius of the AC output
power cable.

4
1. Install the mounting bracket.
2. Unpack the inverter and move it to the specified position.
Handles are packed in a fitting bag and are not delivered with the SUN2000.
3. Adjust the installation positions of the handles, and install the SUN2000 on the mounting
bracket.

5
If outdoor copper-core cables are used, select copper wiring terminals. For details about the
requirements for cables and terminals of other materials, see the user manual.
4Installing Cables
Installation Preparations
4.1
No.
Item
Type
Specifications
Description
1
PE cable
Single
-core
outdoor copper
cable
Conductor cross
-
sectional area ≥ S/2
[1]
(S
is the conductor cross
-
sectional area of the AC
output power cable.)
•
If you choose the
ground point on the
chassis shell for
connecting a PE
cable, prepare the PE
cable.
•
If you choose the
ground point in the
maintenance
compartment for
connecting a PE
cable, use a four-
core
AC output power
cable and do not
have to prepare a PE
cable.

6
No.
Item
Type
Specifications
Description
2
AC output
power
cable
[2][3][4]
Outdoor copper
cable
•
Conductor cross-
sectional area: 50–
240 mm2
•Cable outer diameter:
24–66 mm (multi-
core); 14–32 mm
(single-core)
If you choose the ground
point in the maintenance
compartment for
connecting a PE cable,
use a four
-core cable.
Otherwise, use a three
-
core cable or three
single
-core cables.
Outdoor
aluminum
-core
cable
•
Conductor cross-
sectional area: 70–
240 mm2(multi-
core); 70–240 mm2
(single-core)
•Cable outer diameter:
24–66 mm (multi-
core); 14–32 mm
(single-core)
3
DC input
power cable
PV cable that
meets the 1500 V
standard
•
Conductor cross-
sectional area: 4–6
mm2
•Cable outer diameter:
4.7–6.4 mm
-
4
RS485
communication
s cable
Outdoor shielded
twisted pair cable
•
Conductor cross-
sectional area: 0.25–
1
mm2
•Cable outer diameter:
4–11 mm
When three
communications cables
connect to the signal
cable connector, the
outer diameter of the
cables should be 4
–8
mm.
5
(Optional)
Power cable of
the tracking
system
Three
-
core outdoor
copper cable with
dual
-layer
protection
•
Conductor cross-
sectional area: 10
mm2
•Cable outer diameter:
15–18 mm
-
Note [1]: The value is valid only if the conductors of the PE cable and AC power cable use the
same material. If the materials are different, ensure that the conductor cross
-
sectional area of the
PE cable produces a conductance equivalent to that of the area S/2. The specifications of the PE
cable are subject to this table or calculated according to IEC 60364
-5-54.
Note [2]: You are advised to use a soft cable to prevent poor terminal contact due to the bending
stress of the cable.
Note
[3]: For some models, the outer diameter of a single-core cable ranges from 14 mm to 36
mm based on the label in the maintenance compartment.
Note [4]: For some models, when the OT/DT terminal is crimped as shown in the following figure
and the rubber baffle plate of the AC wiring terminal is 112 mm, the maximum conductor cross
-
sectional area of the single
-core cable can be 400 mm2.

7
Specifications of the Crimped OT/DT Terminal
Specification of the Rubber Baffle Plate
Installing the PE Cable
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.

8
8
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 three 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.
1. Loosen the screws on the maintenance
compartment door.
2. Open the maintenance compartment door
and adjust the support bar.

9
Crimping
module
(Optional) Replacing the Crimping Module
4.4
3. Remove the crimping modules that are bound in the maintenance compartment and save
them properly for future use.
If the AC output power cable has a single core, replace the crimping module.
For some models, a three-hole rubber plug is bound in the maintenance compartment. After
removing the rubber plug, save it properly for future use.

10
(Optional) Installing the Solar Tracker Power Cable
4.6
1. A switch-disconnector-fuse or fuse-switch-disconnector with a voltage of no less than 800 V,
current of 16 A, and protection type of gM needs to be installed between the SUN2000 and
the tracker controller for protection.
2. The cable between the wiring terminal on the power cable and the switch-disconnector-fuse
or fuse-switch-disconnector should be less than or equal to 2.5 meters.
Removing the Rubber Rings from the Crimping Module
4.5
Use scissors to cut off the joints of the rubber rings to remove them. All rubber rings are
removed in the same way.

11
Multi-Core Cable (Four-Core Cable Is Used as an Example)
Installing AC Output Power Cables
4.7
(five rings)
(four rings)
(three rings)
(two rings)
(one ring)
(six rings)
•Remove the corresponding rubber rings in strict accordance with the cable diameter, and ensure
that the crimping module is not damaged. Otherwise the protection level of the solar inverter
will be affected.
•Ensure that AC terminations provide firm and solid electrical connections. Failing to do so may
cause SUN2000 malfunction and damage to its terminal block, even starting thermal events.
•If the AC output power cables are subject to a pulling force because the inverter is not installed
stably, ensure that the last cable that bears the stress is the PE cable.

12
Single-Core Cable
(three rings)
(two rings)
(one ring)
(four rings) The 32–36 mm cable is supported only
by some models. Refer to the
corresponding label to get the
supported size.
Bending Radius
Multi
-Core Cable
Single
-Core Cable
Unarmored
Armored
Unarmored
Armored
R
≥ 15D
R
≥ 12D
R
≥ 20D
R
≥ 15D
R indicates the bending radius, and D indicates the
outer diameter of the cable.
The AC power cable must be
routed vertically into the
maintenance compartment.
(five rings)

13
Closing the Maintenance Compartment Door
4.8
Installing DC Input Power Cables
4.9
•The SUN2000 has three DC switches (DC SWITCH 1, DC SWITCH 2, and DC SWITCH 3). DC
SWITCH 1 controls routes 1–4 of DC input terminals, DC SWITCH 2 routes 5–9, and DC
SWITCH 3 routes 10–14.
•If a SUN2000-196KTL-H3, SUN2000-200KTL-H3, or SUN2000-215KTL-H3 inverter is used, do
not connect each individual PV string in parallel or connect them using Y-branch connectors.
Otherwise, the inverter may be damaged.
Ensure that the PV module output is well insulated to ground.
Selecting DC Input Terminals
•The PV1 DC input terminal must be connected to a PV string.
•PV1, PV3, PV4, PV6, PV8, PV9, P11, PV13, and PV14 strings are preferentially connected.

14
1. Use the MC4 EVO2 PV connectors delivered with the inverter. If the PV connectors are lost or
damaged, purchase the connectors of the same model. The device damage caused by
incompatible PV connectors is beyond the warranty scope.
2. Before connecting DC input power cables, label the cable polarities to ensure correct cable
connections. If the cables are connected incorrectly, 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. For models of the crimping tool and removal wrench, use the recommended model or
contact your Staubli dealer.
5. Connect the PV string connector to the inverter connector, and then pull back the PV string
connector along the axial direction to check whether the connectors are securely connected.
6. The connector must be securely connected. Damages caused by improper connection are not
covered under the warranty.
For example, if the number of input routes is 9–14, the DC input terminals are selected as
follows.
Number of
PV Strings
Terminal Selection
Number of
PV Strings
Terminal Selection
9
PV1,
PV3, PV4, PV6, PV8, PV9,
PV11, PV13 and PV14
10
PV1, PV2, PV3, PV4, PV6, PV8, PV9,
PV11, PV13 and PV14
11
PV1,
PV2, PV3, PV4, PV5, PV6,
PV8, PV9,
PV11, PV13 and
PV14
12
PV1, PV2, PV3, PV4, PV5, PV6, PV8,
PV9, PV10,
PV11, PV13 and PV14
13
PV1,
PV2, PV3, PV4, PV5, PV6,
PV7, PV8, PV9, PV10,
PV11,
PV13 and PV14
14
PV1, PV2, PV3, PV4, PV5, PV6, PV7,
PV8, PV9, PV10,
PV11, PV12, PV13
and PV14

15
Installing a DC Input Power Cable
Connector connection:
Communication Port Pin Definition
Installing the RS485 Communications Cable
4.10
When routing communications
cables, separate communications
cables from power cables to
prevent communication from being
affected.

16
Connecting Communications Cables (4–8 mm Four-Hole Rubber Plug)
When using the four-hole rubber plug, block the unused cable hole with a plug, and then
tighten the locking cap.
Port
Pin
Definition
Pin
Definition
Description
RS485
-1
1
RS485A IN,
RS485
differential signal+
2
RS485A OUT,
RS485
differential signal+
Used for cascading
inverters or connecting to
devices such as the
SmartLogger.
3
RS485B, RS485
differential signal
–
4
RS485B, RS485
differential signal
–
PE
5
PE, shielding ground
6
PE, shielding ground
-
RS485
-2
7
RS485A, RS485
differential signal+
8
RS485B, RS485
differential signal
–
Used for connecting to
RS485 slave devices.

17
5Verifying the Installation
1.
The SUN2000 is installed correctly and securely.
2.
The DC switches and downstream AC switch are OFF.
3.
All ground cables are connected securely, without open circuits or short circuits.
4.
AC output power cables are connected correctly and securely, without open circuits or short
circuits.
5.
DC input power cables are connected correctly and securely, without open circuits or short
circuits.
6.
The RS485 communications cable is connected correctly and securely.
7.
The maintenance compartment door is closed and the door screws are tightened.
8.
Unused DC input terminals are sealed.
9.
Unused USB ports are plugged with watertight caps.
Connecting Communications Cables (4–8 mm Two-Hole Rubber Plug)
If three communications cables are to be connected, use the three-hole rubber plug that is
bound in the maintenance compartment.

18
6Powering On the System
1. Turn on the AC switch between the SUN2000 and the power grid.
2. Set DC SWITCH 1 at the bottom of the SUN2000 chassis to ON. When you hear a click
sound, the switch is ON.
3. Check the status of LED 1.
•If it is steady green, set DC SWITCH 2 and DC SWITCH 3 to ON.
•Wait one minute after power-on, if LED 1 is off, do not turn on other DC switches. At the
same time, turn off DC SWITCH 1 and check whether the input power cables are
correctly connected.
4. Observe the LED indicators to check the SUN2000 operating status.
•Blinking at short intervals (on for 0.2s and then off for 0.2s).
•Blinking at long intervals (on for 1s and then off for 1s).
•When powering on the system, you must switch on DC SWITCH 1 first, and then switch on DC
SWITCH 2 and DC SWITCH 3 after LED 1 is steady on. Huawei shall not be held liable for
damages caused by failing to follow this sequence.
•Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter
to check that the AC voltage is within the specified range.
•The DC switches support automatic disconnection. Reverse polarity or improper PV module
configuration will trigger automatic disconnection of DC switches. In this case, do not forcibly
turn on the switches before the faults are fixed. Otherwise, damages caused by the forced
switch-on will not be covered under any warranty.
•When the handle of the DC switch points to the icon, the spring of the DC switch is in
released state and the switch is not completely connected. In this case, automatic
disconnection may fail. You need to set the DC switch to the ON position.
When LED2 is steady green (meaning that the inverter is grid-tied), do not turn on any DC
switch. Otherwise, the inverter may be damaged because the insulation resistance is not
detected.
Display Category
Indicator Status
Description
PV indication
LED1
LED4
-
Steady green
-
At least one PV string is properly connected, and
the DC input voltage of the corresponding MPPT
circuit is higher than or equal to 500 V.
Blinking green
at short
intervals
Steady
red
An environmental fault occurs at DC side.
Off
-
The SUN2000 disconnects from all PV strings, or
the DC input voltage of each MPPT circuit is less
than 500 V.

19
Display Category
Indicator Status
Description
Grid connection
indication
LED2
LED4
-
Steady green
-
The SUN2000 has connected to the power grid.
Blinking green
at short
intervals
Steady
red
An environmental fault occurs at AC side.
Off
-
The SUN2000 does not connect to the power grid.
Communications
indication
LED3
-
Blinking green at short
intervals
The SUN2000 receives data over RS485 or MBUS
communication.
Off
The SUN2000 has not received data over RS485
or MBUS communication for 10 seconds.
Alarm/O&M
indication
LED4
-
Steady red
A warning alarm is generated.
If the PV connection indicator and grid connection
indicator are both not blinking green fast, replace
components or the solar inverter as instructed by
the SUN2000 app.
Blinking red at short
intervals
A minor alarm is generated.
Blinking red at long
intervals
A major alarm is generated.
Steady green
Local maintenance succeeds.
Blinking green at long
intervals
In local maintenance or shuts down over a
command.
Blinking green at short
intervals
Local maintenance fails.
Off
No alarm is generated, and no local maintenance
operations are performed.