Huawei SUN2000-3.8KTL-USL0 User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(3.8KTL, 5KTL, 7.6KTL)-USL0
Quick Guide
Issue: 02
Part Number: 31509357
Date: 2018-05-10

(1) Host panel
(2) LED indicators
(3) Maintenance compartment door
(4) Mounting bracket
(5) Heat sink
(6) DC switch (DC SWITCH)
(7) Antenna port (ANT)
(8) Battery cable waterproofing bolt (BAT, 3/4 in.)
(9) Ventilation valve
(10) Backup enable button (MANUAL STAND
-
ALONE)
(11) Signal cable waterproofing bolt (COM, 3/4 in.)
(12) PV input power cable waterproofing bolt (PV,
3/4 in.)
(13) AC output power cable waterproofing bolt for
critical load (BACKUP, 3/4 in.)
(14) AC output power cable waterproofing bolt for
home load (AC GRID, 3/4 in.)
Copyright © Huawei Technologies Co., Ltd. 2018. 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 the accuracy of its 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. 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 become 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 your safety, wear proper personal protective
equipment (PPE).
NOTICE

2Installation Requirements
2
Angle Space
Dimensions
3System Installation
Installing the SUN2000
3.1
•Select tightening screws suitable for the load-bearing structure. This section introduces how to
install the SUN2000 on a wall. For details about the support-mounted installation, see the user
manual.
•Prepare an anti-theft lock suitable for the lock hole diameter Ф8 mm (0.31 in.) by yourself.
NOTE

1. Install the mounting bracket (for example, on a frame post).
Marking-off Template
Load
-
Bearing
Structure
Frame post
(recommended)
Brick wall/Fiber
-
cement composite
panel
Plywood
Tightening
Screw
Type
M6 tapping
screw
M6 expansion bolt
M6 expansion anchor
screw
Screw
Quantity
4 PCS
4 PCS
4 PCS
Screw
Appearance
Hole
Combination
in Marking
-
off Template
1, 2, 3, 4
3, 4, 5, 6
3,
4, 5, 6
Frame post
Bottom alignment line for the
mounting bracket (top)
3
2. Install the SUN2000 on the
mounting bracket. 3. Tighten the hex socket screws. 4. (Optional) Install an anti- theft lock.
Wall panel

•Do not open the host panel of the SUN2000.
•Before opening the SUN2000 maintenance compartment door, turn off the downstream AC
output switch and the bottom DC switch.
•Do not open the maintenance compartment door during rainfall or snowfall. 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.
Installing the SIM Card
3.2
•If the 4G function is configured, you need to prepare a standard SIM card size: 25 mm x 15 mm
(0.98 in. x 0.59 in.). After being installed with the SIM card and being powered on, the 4G module
can access the 4G network without being commissioned. Do not remove the 4G module when
installing the SIM card.
•Install the SIM card in the direction shown on the arrow on the slot.
•To install the SIM card, press it in place until it locks.
•To remove the SIM card, push it inward and then let go to eject it.
4
NOTE
NOTICE
4Electrical Connections
•Connect cables in accordance with local installation laws and regulations.
•Ensure that power is off before connecting cables.
Preparing Cables
4.1
NOTICE
No.
Cable
Type
Conductor Cross
-Sectional
Area
1
AC
output
power
cable
AC output
power cable
for home load
•
Use cables that can withstand 90°
C
(194°F) or 105°C (221°F).
•If the output mode is set to L1/L2/N,
use four single-
core outdoor copper
cables (L1, N, L2, PE).
•
If the output mode is set to L1/L2,
use three single-core outdoor
copper cables (L1, L2, PE).
•
L1, N, L2: 12–6 AWG
(SUN2000-3.8KTL-
USL0)/
10–6 AWG(SUN2000-
5KTL-
USL0)/
6 AWG(SUN2000-7.6KTL-
USL0)
•
PE: 6 AWG
AC output
power cable
for
critical
load
•
Use cables that can withstand 90°
C
(194°F) or 105°C (221°F).
•
Two single-core outdoor copper
cables (L1, L2)
12
–6 AWG

5
Preparing the Threading Tube
4.2
The specifications of the tubes should comply with those of the waterproofing bolts. For example,
for a 3/4 in. waterproofing bolt, a 3/4 in. tube is recommended. The tube appearance shown in the
following figure is for reference only. The actual tube is the standard.
Nut Conduit
Cable hole diameter at the bottom
Fitting
No.
Cable
Type
Conductor Cross
-
Sectional Area
2
PV input power cable
•
PV cable that meets the 600 V standard
•
Use cables that can withstand 90°C
(194°F) or 105°C (221°F).
•
Single-core outdoor copper cable
10
–8 AWG
(Optional) Ground
cable at the PV side
(GND)
•
Use cables that can withstand 90°C
(194°F) or 105°C (221°F).
•
Single-core outdoor copper cable
6 AWG
3
(Optional) Battery
cable
•
PV cable that meets the 600 V standard
•
Use cables that can withstand 90°C
(194°F) or 105°C (221°F).
•
Single-core outdoor copper cable
14
–8 AWG
4
(Optional) Signal cable
Multi
-paired and individually foil-shielded
cable that complies with UL2919, CM/CMG
(NEC type), or CMH (CSA type)
24
–16 AWG
Threading tube
Installing the AC Output Power Cable
4.3
•Ensure that the exposed core wire is completely inserted into the cable hole and connected
securely. Failing to do so may cause the SUN2000 to malfunction or be damaged.
•If the AC output power cable bears pulling force because the inverter is not installed securely,
ensure that the last cable that bears the force is the PE cable.
•In the following figure, 1.0 mm x 5.5 mm (0.04 in. x 0.22 in.) is the thickness and width of the
screwdriver blade.
NOTICE

6
1. Connect the AC output power cable for home load (L1/L2/N is used as an example here).
L1/L2/N
L1/L2

7
2. Connect the AC output power cable for critical load.
Installing the PV Input Power Cable
4.4
•Ensure that the PV module output is well insulated to ground.
•Ensure that the PV input power cable is correctly connected and that the voltage does not
exceed 500 V DC. Otherwise, the SUN2000 will be damaged.
•The output wiring terminals of PV modules or connected optimizers may have hazardous
voltages. Touching the terminals may cause electric shock. Before connecting PV input power
cables, ensure that the DC SWITCH of the SUN2000 is OFF and that the DC input terminals of
the SUN2000 have no voltage.
DANGER
•The ground cable at the PV side (GND) is connected to the ground point on the PV module
support, ensuring reliable connection between the PV module frame and the SUN2000 ground
point.
•Ensure that the positive and negative cables of PV strings are connected to the PV positive (+)
and negative (–) terminals respectively.
NOTICE

8
Installing the Battery Cable
4.5
•Use dedicated insulation tools when
connecting cables. Otherwise,
serious injury may occur due to the
high battery voltage.
•Ensure that the battery cable is
correctly connected. Ensure that the
polarities are not reversed.
For details about how to install the battery
cable, see section 4.4 Installing the PV
Input Power Cable.
DANGER

9
Installing the Signal Cable
4.6
•When laying out a signal cable, separate it from the power cable to avoid signal interference.
•Cut off extra wires from the signal cable to be flush with the protection layer. Ensure that the
exposed core wire is completely inserted into the cable hole and connected securely.
No.
Label
Definition
Description
1
RSS+
EMERGENCY STOP switch signal
input
Can connect to the signal port on
the emergency stop switch (NC).
2
RSS–
3
EN+
Enable signal+
Can connect to the battery enable
signal port and RS485 signal port.
4
EN–
Enable signal
–
5
485A2
RS485A
, RS485 differential signal+
6
485B2
RS485B
, RS485 differential signal–
7
485A1
RS485A
, RS485 differential signal+
Can connect to the RS485 signal
port on the energy meter.
8
485B1
RS485B
, RS485 differential signal–
NOTICE