Huawei SUN2000 Series User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(100KTL, 110KTL, 125KTL) Series
Quick Guide
Issue: 05
Part Number: 31500ARJ
Date: 2019-11-19

1
1Overview
Copyright © Huawei Technologies Co., Ltd. 2019.
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 certified electricians are allowed to operate the device. Operation personnel should
understand the composition and working principles of the grid-tied PV power system and local
regulations.
•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).
(1)
Panel
(2) LED indicators
(3) Maintenance compartment door
(4) Mounting bracket
(5) External fan tray
(6) DC input terminal group 1 (PV1
–PV8, controlled by
DC SWITCH 1)
(7) DC switch 1 (DC SWITCH 1)
(8) DC input terminal group 2 (PV9
–PV14, controlled by
DC SWITCH 2)
(9) DC switch 2 (DC SWITCH 2)
(10) DC input terminal group 3 (PV15
–
PV20, controlled by
DC SWITCH 3)
(11) DC switch 3 (DC SWITCH 3)
(12) Ventilation valve
(13) USB port (USB)
(14) Communications port (COM)
(15) Hole for the AC output power cable
(16) Hole for the tracking system power cable

2
2Installation Requirements
3Installing a Solar Inverter
Recommended: 600 mm ≤ Bottom space ≤ 730 mm
Dimensions
Angle Space
•This quick guide describes how to install a solar
inverter on a support. For details about wall-mounted
installation, see the user manual.
•The M12x40 bolt assemblies are delivered with the
solar inverter. 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.
•Before installing the mounting bracket, remove the
security Torx wrench and set it aside.
Position for binding the
security Torx wrench

3
1. Install the mounting bracket.
2. Install the solar inverter onto the mounting bracket. 3. Tighten security Torx screws.
It is recommended that anti-rust measures be taken on the positions for drilling holes.
Use the
handles to
facilitate
installation.
Handles are
optional and
delivered
separately.
Ensure that the
handles are
securely
installed. After
the installation
is complete,
remove the
handles and
set them aside.
Installation Positions of
Handles During Installation
Installation Positions of
Handles During Transportation

4
4Connecting Cables
No.
Cable
Type
Recommended
Conductor
Cross-
Sectional
Area
Outer Diameter
1
PE cable
Outdoor cable and M10 OT/DT
terminals
S
p≥ S/2
N/A
2
Tracking
system power
cable
Three
-core outdoor copper cable
with dual
-layer protection
10 mm
2
15
–18 mm
3
AC output
power cable
(multi
-core)
•If you connect a ground cable to
the ground point on the chassis
shell, you are advised to use a
three-core (L1, L2, and L3)
outdoor cable and M12 OT/DT
terminals (L1, L2, and L3).
•If you connect a ground cable to
the ground point in the
maintenance compartment, you
do not need to prepare a PE
cable but are advised to use a
four-core (L1, L2, L3, and PE)
outdoor cable, M12 OT/DT
terminals (L1, L2, and L3), and
M10 OT/DT terminals (PE).
•
Copper cable
−S: 95–185 mm2
−Sp≥ S/2
•
Aluminum alloy
cable or copper-
clad
aluminum cable:
−S: 120–240 mm2
−Sp≥ S/2
24
–66 mm
AC output
power cable
(
single-core)
You are advised to use a single
-
core
outdoor cable and M12
OT/DT
terminals.
•
Copper cable
−S: 95–185 mm2
•
Aluminum alloy
cable or copper-
clad
aluminum cable:
−S: 120–240 mm2
14
–32 mm
4
DC input power
cable
PV cable that meets the 1100 V
standard
4
–6 mm2
5.5
–9 mm
5
RS485
communications
cable
Outdoor shielded twisted pair that
meets the local standard
0.25
–1 mm2
•
One or two
communications
cables:
4–11 mm
•
Three
communications
cables:
4–8 mm
The value of
Spis 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 of the PE cable with a proper cross
-
sectional area produces a conductance equivalent to that of the cable specified in the table.
Preparations
4.1
•Connect cables in accordance with the local installation laws and regulations.
•To prevent poor cable connection due to overstress, leave enough slack before connecting the
cables to the appropriate ports.
S and Spare the conductor cross-sectional areas of AC power cables and PE cables respectively.
3-pin Model (125KTL) Cable Description

5
4-pin Model (100KTL/110KTL) Cable Description
No.
Cable
Type
Recommended
Conductor
Cross-
Sectional
Area
Outer Diameter
1
PE cable
Outdoor cable and M10 OT/DT
terminal
S
p≥ S/2
N/A
2
Tracking
system power
cable
Three
-core outdoor copper cable
with dual
-layer protection
10 mm
2
15
–18 mm
3
AC output
power cable
(multi
-core)
•If you connect a ground cable to
the ground point on the chassis
shell and the neutral wire is not
used, you are advised to use a
three-core (L1, L2, and L3)
outdoor cable and M12 OT/DT
terminals (L1, L2, and L3).
•If you connect a ground cable to
the ground point in the
maintenance compartment and
the neutral wire is not used, you
are advised to use a four-core
(L1, L2, L3, and PE) outdoor
cable, M12 OT/DT terminals
(L1, L2, and L3), and M10
OT/DT terminals (PE).
•If you connect a ground cable to
the ground point on the chassis
shell and the neutral wire is
used, you are advised to use a
four-core (L1, L2, L3, and N)
outdoor cable and M12 OT/DT
terminals (L1, L2, L3, and N).
•If you connect a ground cable to
the ground point in the
maintenance compartment and
the neutral wire is used, you are
advised to use a five-core (L1,
L2, L3, N, and PE) outdoor
cable, M12 OT/DT terminals
(L1, L2, L3, and N), and M10
OT/DT terminals (PE).
•
Copper cable
−S: 95–185 mm2
−Sp≥ S/2
•
Aluminum alloy
cable or copper-
clad
aluminum cable:
−S: 120–240 mm2
−Sp≥ S/2
24
–66 mm
AC output
power cable
(
single-core)
You are advised to use a single
-
core
outdoor cable and M12
OT/DT
terminals.
•
Copper cable
−S: 95–185 mm2
•
Aluminum alloy
cable or copper-
clad
aluminum cable:
−S: 120–240 mm2
14
–32 mm
4
DC input power
cable
PV cable that meets the 1100 V
standard
4
–6 mm2
5.5
–9 mm
5
RS485
communications
cable
Outdoor shielded twisted pair that
meets the local standard
0.25
–1 mm2
•
One or two
communications
cables: 4–11
mm
•
Three
communications
cables: 4–8 mm
The value of
Spis 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 of the PE cable with a proper cross
-
sectional area produces a conductance equivalent to that of the cable specified in the table.

6
Installing a PE Cable
4.2
•It is recommended that the PE
cable of the solar inverter be
connected to a nearby ground
point. Connect the PE points
of all solar inverters in the
same 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.
Opening the Maintenance Compartment Door
4.3
•Do not open the panel of the solar inverter.
•Before opening the 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 have to, 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.
Reserved PE point

7
4. Select a crimping module according to the type of the AC output power cable.
3. Remove the accessories and set them aside.
3-pin Model 4-pin Model
Multi-core Cable
Single-core Cable

8
(Optional) Installing the Tracking System Power Cable
4.5
•The tracking system should be equipped with an overcurrent protective device or component.
The length of the cable between the power cable terminal and the overcurrent protection device
or component must be less than or equal to 2.5 m.
•The power supply of the tracking system should be an AC three-phase power grid.
•Keep inflammable materials away from the power cable.
•The power cable must be protected with a conduit to prevent short circuits caused by insulation
layer damage.
Removing the Rubber Rings from the Crimping Module
4.4
Use scissors to cut off the joints of the rubber rings to remove them. All rubber rings are removed in
the same way.
Remove the corresponding rubber rings strictly according to the cable diameter range, and ensure
that the crimping module is not damaged. Otherwise, the protection level of the solar inverter will
be affected.

9
Multi-core Connection Method
Installing the AC Output Power Cable
4.6
•This section describes how to install an AC output power cable for the 3-pin model.
•The cable outer diameter can be measured using the ruler sticker in the maintenance
compartment.
•Ensure that the AC output power cable is secured. Failure to do so may cause the solar inverter
to malfunction or damage to its terminal block by issues such as overheating.
•Sufficient slack should be provided in the PE cable to ensure that the last cable bearing the
force is the PE cable when the AC output power cable bears pulling force due to force majeure.
•If a screw on the maintenance compartment door is lost, obtain the spare screw from the fitting
bag tied at the bottom of the maintenance compartment.