Huawei SUN2000-29.9KTL User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL)
Quick Guide
Issue: 08
Part Number: 31508547
Date: 2019-07-24

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-(29.9KTL, 33KTL-A, 36KTL, 42KTL)
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.
Ports
Waterproof cable connector is abbreviated as connector in the following text.
(1) PV connection indicator
(2) Grid-tied indicator
(3) Communication indicator
(4) Alarm/Maintenance indicator
(5) Maintenance compartment door
(6) Host panel
SUN2000 Front View
(1) Waterproof cable connector (AC OUTPUT 1)
(3) USB port (USB)
(5) DC switch 2 (DC SWITCH 2)
(7) DC input terminal (controlled by DC
SWITCH 1)
(2) Waterproof cable connectors (AC OUTPUT 2)
(4) DC switch 1 (DC SWITCH 1)
(6) Waterproof cable connectors
(COM1/COM2/COM3)
(8) DC input terminal (controlled by DC SWITCH 2)
NOTE

2
Enclosure dimensions Mounting bracket dimensions
2Installation Requirements
Installation Angle
2.1
Installation Space
2.2
Vertical Backward HorizontalUpside down Forward
For ease of installing the SUN2000
on the mounting bracket,
connecting cables to the bottom of
the SUN2000, and maintaining the
SUN2000 in future, it is
recommended that the bottom
clearance be greater than or equal
to 600 mm and less than or equal
to 730 mm.
NOTE

3
5. Install the SUN2000 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 SUN2000
The SUN2000 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 SUN2000 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 SUN2000 as an example. For details about
how to wall-mount the SUN2000, see the SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) 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
No.
Name
Model or Specifications
Function
1
OT terminal
M6
Connects to a ground cable.
2
OT terminal
M8
Connects to an AC output
power cable.
3
Ground cable
Outdoor copper
-core cable with a
cross
-sectional area of 16 mm2
Connects to a ground cable.
4
AC output power
cable
•
Outdoor copper-
core cable with
a cross-sectional area of 16
mm2 (for the SUN2000-
29.9KTL/33KTL-A)
•
Outdoor copper-
core cable with
a cross-sectional area of 25
mm2 (for the SUN2000-
36KTL/42KTL)
Connects to an AC output
power cable.
5
DC input power
cable
PV1
-F/4 mm2
Connects to a DC input power
cable.
6
RS485
communications
cable
Computer cable DJYP2VP2
-22
2x2x1
Connects to an RS485
communications cable over a
terminal block.
Outdoor shielded network cable
CAT 5E
Connects to an RS485
communications cable over
an
RJ45
network port.
7
FE communications
cable
Outdoor shielded network cable
CAT 5E
Connects to an Ethernet
communications cable over an
FE network port.
8
Cable tie
N/A
Binds cables.
1. Before connecting cables, ensure that all required OT terminals and cables are prepared.
Copper-core cables with copper wiring terminals are recommended. For the requirements on
the cables and terminals made of other materials, see the SUN2000-(29.9KTL, 33KTL-A,
36KTL, 42KTL) User Manual.
2. The SUN2000-42KTL supports the 3W+PE wiring mode.
3. The SUN2000-29.9KTL/33KTL-A/36KTL supports 3W+PE and 3W+N+PE wiring modes.
Connect the neutral wire if required.
NOTE

5
OT-M6
M6
5 N·m
Installing Ground Cables
4.2
Installing AC Output Power Cables
4.3
1. The outdoor copper-core cable with a cross-sectional area of 16 mm2is recommended. The
ground cable must be secured.
2. It is recommended that ground cable of the SUN2000 be connected to the nearest ground point.
For a system with multiple SUN2000s connected in parallel, connect the ground points of all
SUN2000s to ensure equipotential connections to ground cables.
3. To enhance the corrosion resistance of the ground terminal, apply silica gel or paint on it after
connecting the ground cable.
NOTE
•If you connect a ground cable to the ground point on the enclosure shell, you are recommended to
use a three-core outdoor copper-core cable with a cross-sectional area of 25 mm2as the AC
output power cable for the SUN2000-42KTL.
•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 25 mm2
as the AC output power cable for the SUN2000-42KTL.
•If you connect a ground cable to the ground point on the enclosure shell in a scenario without a
neutral wire, you are recommended to use a three-core outdoor copper-core cable with a cross-
sectional area of 16 mm2as the AC output power cable for the SUN2000-29.9KTL/33KTL-A and a
three-core outdoor copper cable with a cross-sectional area of 25 mm2as the AC output power
cable for the SUN2000-36KTL.
•If you connect a ground cable to the ground point in the maintenance compartment in a scenario
without a neutral wire, you are recommended to use a four-core outdoor copper-core cable with a
cross-sectional area of 16 mm2as the AC output power cable for the SUN2000-29.9KTL/33KTL-A
and a four-core outdoor copper cable with a cross-sectional area of 25 mm2as the AC output
power cable for the SUN2000-36KTL.
NOTE
1. Never open the host panel of the SUN2000.
2. Before opening the SUN2000 maintenance compartment door, turn off the downstream AC
output switch and the two bottom DC switches.
•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 mainly 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."

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 enclosure shell as the
standby screw, and the idle floating nut on the
enclosure as the standby floating nut.)
2. Open the maintenance
compartment door and adjust the
support bar. (The support bar is
bound to the enclosure base.)
3. Remove the AC terminal cover.
•If you connect a ground cable to the ground point on the enclosure shell in a scenario with a
neutral wire, you are recommended to use a four-core outdoor copper-core cable with a cross-
sectional area of 16 mm2as the AC output power cable for the SUN2000-29.9KTL/33KTL-A
and a four-core outdoor copper cable with a cross-sectional area of 25 mm2as the AC output
power cable for the SUN2000-36KTL.
•If you connect a ground cable to the ground point in the maintenance compartment in a
scenario with a neutral wire, you are recommended to use a five-core outdoor copper-core
cable with a cross-sectional area of 16 mm2as the AC output power cable for the SUN2000-
29.9KTL/33KTL-A and a five-core outdoor copper cable with a cross-sectional area of 25 mm2
as the AC output power cable for the SUN2000-36KTL.
•For more details about cable specifications, see the SUN2000-(29.9KTL, 33KTL-A, 36KTL,
42KTL) User Manual.
•The AC OUTPUT 1 connector supports the cable with an outer diameter of 18 mm to 44 mm.
NOTE

7
a. Three-core cable (excluding the ground
cable and neutral wire)
c. Four-core cable (excluding the ground
cable but including the neutral wire)
JacketInsulation layerCore wire
b. Four-core cable (including the ground cable
but excluding the neutral wire)
d. Five-core cable (including the ground cable
and neutral wire)
4. Remove the locking cap from the AC OUTPUT 1 connector and then remove the plug.
5. Select an appropriate rubber fitting based on the cable outer diameter. Route the cable through
the locking cap and then the rubber fitting.
•Mismatch between the cable outer diameter and
the rubber fitting may degrade the Ingress
Protection Rating of the device.
•To avoid damaging the rubber fitting, do not
route a cable with a crimped OT terminal directly
through the rubber fitting.
•Do not adjust the cable when the locking cap is
tightened. Otherwise, the rubber fitting will shift,
which affects the Ingress Protection Rating of
the device.
6. 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.)
7. Insert the exposed core wires into the crimping area of the OT terminal and crimp them using
hydraulic pliers.
8. 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.
9. Route the AC output power cable through the AC OUTPUT 1 connector at the bottom of the
enclosure.
10.Connect the AC output power cable to the AC terminal block, and then secure the connector
using a 13 mm socket wrench with an extension rod. 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 rod.

8
a. 3-pin SUN2000-42KTL
(excluding the ground cable) b. 3-pin SUN2000-42KTL (including the ground cable)
M8
8 N·m
M8
8 N·m
M6
5 N·m
c. 4-pin SUN2000-42KTL (excluding the
ground cable and neutral wire) d. 4-pin SUN2000-42KTL (including the ground cable but excluding the neutral
wire)
M8
8 N·m M8 8 N·m
M6
5 N·m
e. SUN2000-29.9KTL/33KTL-A/36KTL
(excluding the ground cable and neutral wire) f. SUN2000-29.9KTL/33KTL-A/36KTL (including the ground cable but
excluding the neutral wire)
M8
8 N·m M8 8 N·m
M6
5 N·m
•Ensure that the AC output power cable is connected securely. Otherwise, the SUN2000 may fail
to operate or experience a fault that will damage the terminal block. For example, the SUN2000
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.

9
Installing DC Input Power Cables
4.4
g. SUN2000-29.9KTL/33KTL-A/36KTL
(excluding the ground cable but
including the neutral wire)
h. SUN2000-29.9KTL/33KTL-A/36KTL
(including the ground cable and neutral wire)
M8
8 N·m M8 8 N·m
M6
5 N·m
11.Use a torque wrench with an open end of 65 mm to tighten the locking cap to a torque of 7.5 N·m,
and seal the waterproof connector.
Selecting DC input terminals
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.
The SUN2000 provides two DC switches,
namely, DC SWITCH 1 and DC SWITCH2.
DC SWITCH 1 controls the first to fourth
routes of DC input terminals, whereas DC
SWITCH 2 controls the fifth to eighth routes
of DC input terminals.
NOTE