Huawei SUN2000-55KTL User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(55KTL, 60KTL)-Serie
Quick Guide
Issue: 06
Part Number: 31508435
Date: 2019-06-30

1Copyright © Huawei Technologies Co., Ltd.
2019. All rights reserved.
1Product Overview
Indicator Description
Front View
Indicator
Status
Description
PV connection
indicator
DC input
detection
status
Blinking green
The DC input is normal.
Blinking red
DC input detection is in progress.
Steady red
The DC input is abnormal.
PV string
connection
status
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 600 V.
Off
The SUN2000 disconnects from all PV strings, or
the DC input voltage of each MPPT circuit is less
than 600 V.
Grid
-tied
indicator
Steady green
The SUN2000 has connected to the power grid.
Off
The SUN2000 does not connect to the power grid.
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, carefully read the user manual to get familiar with product
information and 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 package contents 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 proper personal
protective equipment (PPE).
6. Huawei shall not be liable for any consequence caused by violation of the storage, moving,
installation, and operation regulations specified in this document and the user manual.
(1) PV connection indicator
(2) Grid-tied indicator
(3) Communication indicator
(4) Alarm/Maintenance indicator
(5) Maintenance compartment door
(6) Host panel cover

2
Ports
Indicator
Status
Description
Communication
indicator
Blinking green
The SUN2000 receives data
over RS485 or PLC
communication.
Off
The SUN2000 has not received
data over RS485 or PLC
communication for 10 seconds.
Alarm/Maintenan
ce indicator
Alarm status
Blinking red at long intervals (on
for 1s and then off for 4s)
A warning alarm is generated.
Blinking red at short intervals (on
for 0.5s and then off for 0.5s)
A minor alarm is generated.
Steady red
A critical alarm is generated.
Local
maintenance
status
Blinking green at long intervals
(on for 1s and then off for 1s)
Local maintenance is in
progress.
Blinking green at short intervals
(on for 0.125s and then off for
0.125s)
Local maintenance fails.
Steady green
Local maintenance succeeds.
Waterproof cable connector is abbreviated as waterproof connector in the following text.
NOTE
(1) Waterproof cable connector (AC OUTPUT)
(2)
Waterproof cable connector (RESERVE)
(3)
USB port (USB)
(4) DC switch 1 (DC SWITCH 1)
(5)
DC switch 2 (DC SWITCH 2)
(6)
Waterproof cable connector (COM1, COM2,
and COM3)
(7)
DC input terminals (controlled by DC
SWITCH 1)
(8)
DC input terminals (controlled by DC
SWITCH 2)

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2Installation Requirements
Installation Angle
2.1
SUN2000 Dimensions Mounting Bracket Dimensions

4
Installation Space
2.2
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 between 600 mm
and 730 mm.
NOTE
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 bolts supplied with the SUN2000-60KTL-HV-D1 are M12x40 bolt assemblies. The bolts
supplied with other models of SUN2000s are M12x60 expansion bolts and M12x40 bolt
assemblies. If the bolt length does not meet the installation requirements, prepare M12 bolt
assemblies by yourself and use them together with the delivered M12 nuts.
The following describes how to install the SUN2000 by using support installation as an example.
For details about wall-mounted installation, see the user manual.
NOTE
Round
holes

5
1. Set the security torx wrench aside after removing it from the mounting bracket.
2. You are advised to apply anti-rust paint on the hole positions for protection.
NOTE

6
Electrical Connections
4Installing the Ground Cable
4.1
4
•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."
•You need to prepare M6 OT terminals by yourself.
•The outdoor copper-core cable with a cross-sectional area of 16 mm2is recommended. The
ground cable must be secured.
•It is recommended that PGND 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.
•To enhance the corrosion resistance of the PE terminal, apply silica gel or paint on it after
connecting the PGND cable.
NOTE
1. Loosen the two screws on the maintenance compartment door using a security torx wrench.
Opening the Maintenance Compartment Door
4.2
1. Never open the host panel of the SUN2000.
2. Before opening the maintenance compartment door, turn off the downstream AC output switch
and the two DC switches at the bottom.
3. If you need to open the maintenance compartment door on rainy or snowy days, take protective
measures to prevent rain and snow entering the maintenance compartment. If it is impossible to
take protective measures, do not open the maintenance compartment door on rainy or snowy
days.
4. Do not leave unused screws in the maintenance compartment.

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2. Open the maintenance compartment door and install the support bar, which is bound to the
inductor cover at the bottom of the chassis.
3. Remove the cover and hang it on the hook of the chassis door.
If the screws on the chassis door are lost, obtain spare screws from the fitting bag bound to the
inductor cover at the bottom of the chassis.
NOTE
Installing AC Output Power Cables
4.3
You need to prepare M8 OT terminals by yourself. When using the outdoor copper cables for
AC connection, configure the copper wiring terminals. For the requirements on the cables and
terminals made of other materials, see the user manual.
If you connect a ground cable to the ground point on the chassis shell, you are advised to use a
three-core outdoor copper-core cable with a cross-sectional area of 25 mm2as the AC output
power cable.
If you connect a ground cable to the ground point in the maintenance compartment, you are
advised to use a four-core outdoor copper-core cable with a cross-sectional area of 25 mm2as
the AC output power cable.
NOTE

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a. Three-core cable (excluding the
ground cable)
3. 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.)
b. Four-core cable (including the ground
cable)
JacketInsulation layerCore wire
4. Prepare OT terminals.
Core wire
Insulation layer
Heat
gun
Hydraulic pliers
Heat shrink
tubing
1. Remove the locking cap from the AC OUTPUT connector and then remove the plug.
2. Choose whether to use rubber fittings based on the cable outer diameter and select one or more
rubber fittings if required. Route the cable through the locking cap and then the rubber fitting.
•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.

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5. Route the AC output power cable through the AC OUTPUT connector at the bottom of
the enclosure.
6. Connect the AC output power cable to the terminal block, and then tighten the nut using
a torque wrench that has an extension rod.
a. Three-core cable (excluding the ground cable) b. Four-core cable (including the ground cable)
Installing DC Input Power Cables
4.4
Selecting DC Input Terminals
Number
of Inputs
SUN2000
1
Connects to set 1.
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,
named as, DC SWITCH 1 and DC SWITCH2.
DC SWITCH 1 controls the first to fourth sets of
DC input terminals, whereas DC SWITCH 2
controls the fifth to eighth sets of DC input
terminals.
NOTE
•Ensure that AC terminations provide firm and solid electrical connections. Failing to do so may
cause SUN2000 malfunction and damage to its components, even start 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.
7. Tighten the thread-lock sealing nut.
8. Clear debris from the maintenance compartment.