Huawei SUN2000-25KTL-US User manual

HUAWEI TECHNOLOGIES CO., LTD.
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SUN2000-(25KTL, 30KTL)-US
Quick Installation Guide
Issue: 04
Part Number: 31507215
Date: 2019-06-30

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1Product Overview
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 installing the device, read the SUN2000-(25KTL, 30KTL)-US User Manual for knowledge
of 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 they
should 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. When installing devices or connecting cables, use appropriate tools and take necessary
protective measures to avoid damaging devices during operation.
7. 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.
FrontView
(1) PV connection indicator
(3) Communications indicator
(4) Alarm/Maintenance indicator
(6) Maintenance compartment door
(5) Host panel
(2) Grid-tied indicator
Ports (1) DC switch (DC SWITCH)
(3) Functional ground point
(4) Waterproof cable connector (COM1)
(6) Waterproof cable connector (AC OUTPUT)
(5) Protective ground point
(7) Waterproof cable connector (COM3)
(2) Positive DC terminal (+)
(8) Waterproof cable connector (COM2)
(9) Waterproof cable connector (GND)
(10) USB port (USB)
(11) Negative DC terminal (–)
(12) Ventilation valve
Copyright © Huawei Technologies Co., Ltd.
2019. All rights reserved.

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2System Installation
Determining the Installation Position
2.1
It is recommended that the inverter be installed vertically or with a back tilt of no more than 15
degrees for optimal heat dissipation conditions.
Installation dimensions Chassis dimensions
Determining the Installation Mode
2.2
Installedon a Common Support
Vertical Back tilt Upside down Front tilt Horizontal
Installedon a Wall
Vertical Back tilt Upside downFront tilt Horizontal
NOTE

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Installing an Inverter
2.3
Installedon a TiltedSupport
Installedon a Common Support
Back tilt Upside downFront tilt Horizontal
1. Determine the hole positions on the support
based on rear panel dimensions. 2. Drill holes.
4. Mount the inverter on the rear panel.
3. Secure the rear panel.
M12 (3 PCS)
45 N·m

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6. (Optional) Install an anti-theft lock.5. Tighten hexagon bolts.
The anti-theft lock is prepared by the customer.
Installedon a Wall
1. Determine the positions for drilling holes on the wall according to the rear panel dimensions.
2. Drill holes and install expansion sleeves for expansion bolts.
NOTE

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M12 (3 PCS)
45 N·m
3. Secure the rear panel. 4. Mount the inverter on the rear panel.
6. (Optional) Install an anti-theft lock.5. Tighten hexagon bolts.
The anti-theft lock is prepared by the customer.
Installedon a TiltedSupport
1. Prepare a tilted support. Front view
NOTE
1. The hole dimensions of the bottom auxiliary tightening point in the top view are OB-13 mm x 8
mm (OB-0.51 in. x 0.31 in.).
2. The hole dimensions of the tightening point for the tilted support mounting kit in the front view
are OB-32 mm x 12 mm (OB-1.26 in. x 0.47 in.).
3. The auxiliary tightening point is 5 mm (0.20 in.) away from the lower tightening point for the tilted
support mounting kit.
NOTE
Top view
Side view

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3. Secure the inverter to the tilted support.
5. (Optional) Install an anti-theft lock.
2. Secure the tilted support mounting kit to the inverter.
M6 (8 PCS)
4 N·m
M6 (2 PCS)
4 N·m
M8 (4 PCS)
8 N·m
4. (Optional) Secure the auxiliary screws to the inverter.
The anti-theft lock
is prepared by the
customer.
3Electrical Connection
Installing Ground Cables
3.1
The hex key is stored in the fitting bag bound to
the chassis base.
1. Remove the two screws from the
maintenance compartment door using a
hex key and set them aside.
Electrical connections must meet local installation regulatory requirements.
1. Do not leave unused screwsin the chassis.
2. Do not open the host panel of the inverter.
3. Before opening the maintenance
compartment door, turn off the downstream
AC output circuit breaker and DC switch on
the inverter.
NOTE
NOTE

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2. Open the maintenance compartment door and adjust the support bar.
3. Remove the AC terminal cover and set it aside.
Ground Point Meaning Ground Point
Screw Model Connection
1PV side ground points M4 Connect either of the two ground
points for PV side grounding.
2M6
3Protection ground points M6 Connect either of the two ground
points for protective grounding.
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4. Install ground cables.

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InstallingGround Cables(GroundPoints1 and 4 Are Used as an Example)
NOTE
1. Select ground points for PV side grounding and protective grounding based on the principle of
easy operation.
2. It is recommended that 8 AWG outdoor copper-core cables be used as ground cables. Ground
cables must be securely connected.
3. It is recommended that ground cables of the inverter be connected to the near end.
4. To prevent corrosion, apply silica gel or paint to the PE terminal after connecting the ground cables.
Ground Point
OT Terminal
Tightening Torque
1M4 1.2 N·m
4M6 5 N·m
1. Route the PV module ground cable through the
GND hole at the inverter bottom.
2. Route the protective ground cable through the
AC OUTPUT hole at the inverter bottom.
3. When connecting the PE cable to the ground
point 4, 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.
1. The SUN2000-25KTL/30KTL-US (SUN2000 for short) supports three-phase, four-wire (L1, L2,
L3, and N) and three-phase, three-wire (L1, L2, and L3) output modes. Use a connection mode
according to the local and national regulations and installation specifications.
2. Use copper cables that can withstand 90°C (194°F) or 105°C (221°F).
3. It is recommended that the AC output cable be routed through a pipe for protection.
4. The table lists only the recommended cable specifications. For more information about cable
specifications, see the SUN2000-(25KTL, 30KTL)-US User Manual.
Cable Type Cable Quantity Recommended Cable Specifications
A single cable Four (L1, L2, L3, and N) or three
(L1, L2, and L3) 4 AWG
Installing AC Output Power Cables
3.2
NOTE
1. The OT terminal type is M6.
2. If heat shrink tubing is used, put it through the
power cable and then crimp the OT terminal.
1. Remove the waterproof cable connector from AC OUTPUT.
2. Route the AC output power cable through the prepared cable routing pipe.
3. Route the AC output power cable and the cable routing pipe through the AC OUTPUT hole at the
inverter bottom.
4. Prepare AC output power cables. Use hydraulic pliers to crimp the conductor part of the OT
terminal and cover the crimping area with heat shrink tubing or PVC insulation tape.
NOTE
NOTE

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1. The AC output power cable must be secured to a torque that does not exceed 6 N·m.
Otherwise, the AC terminal block may be damaged.
2. Ensure that the AC output power cable is securely connected. Otherwise, the inverter may fail
to run or the terminal block may be damaged after the inverter operates.
6. Secure the cable routing pipe.
5. Connect the SUN2000 AC output power cables to the AC terminal block one by one.
Three-phase, four-wire output Three-phase, three-wire output
Adjust the sequence of installing AC output power cables based on site requirements.
Number of Inputs SUN2000-25KTL/30KTL-US
1Connects to any one route
2 Connects to routes 1 and 3
3 Connects to routes 1, 3, and 5
4 Connects to routes 1, 2, 3, and 5
5 Connects to routes 1, 2, 3, 4, and 5
6Connects to routes 1, 2, 3, 4, 5, and 6
OptionalDC inputterminals
Routes 1, 2, 3, 4, 5, and 6 are
defined from left to right.
Installing DC Input Power Cables
3.3
M6 (3 PCS)
5 N·m
M6 (4 PCS)
5 N·m
NOTE
NOTE
•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 1000 V
using a multimeter. Otherwise, the inverter will be damaged.