Huawei SUN2000-4.95KTL-JPL0 User manual

HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-4.95KTL-JPL0 and SmartACBox 10-In
1-Out Smart AC Combiner Box
Quick Guide
Issue: 02
Part Number: 31500AXJ
Date: 2019-11-04

1
•The information in this document is subject to change due to version
upgrades or other reasons. 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. You can download
this document by scanning the QR code.
•Before installing the device, read the user manual carefully to get familiar with product
information and safety precautions.
•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, check that the package contents are intact and complete against
the packing list. If any damage is found or any component is missing, contact your dealer.
•Use insulated tools when installing the device. For personal safety, wear proper personal
protective equipment (PPE).
•When installing the device or connecting cables, use appropriate tools and take necessary
protective measures to avoid damaging the device during operation.
•Huawei shall not be liable for any consequences caused by the violation of the storage,
transportation, installation, and operation instructions specified in this document and the user
manual.
Installing a SUN2000-4.95KTL-JPL0
1Overview
(1) LED indicators
(2) Front panel
(3) Ground point
(4)
Mounting brackets
(5) Mounting kit
(6) Heat sink
(7) DC switch (DC SWITCH)
(8) DC input terminals
(PV1+/PV1–)
(9)
DC input terminals
(PV2+/PV2–)
(10) Ventilation valve
(11) Communications port (COM)
(12) AC output port (AC)
Copyright © Huawei Technologies Co., Ltd. 2019.
All rights reserved.

2
Mounting Hole Dimensions
1. Install the mounting brackets.
2Installing a Solar Inverter
Space Angle
For details about the installation space when multiple solar inverters are installed, see the
SUN2000-4.95KTL-JPL0 User Manual.
When drilling holes, avoid the water pipes and power cables buried in the wall.

3
Level
Top
Bottom
2. Install the solar inverter on the mounting kit
and tighten screw assemblies. 3. (Optional) Install an anti- theft lock.
3Connecting Cables
Preparation
3.1
•Connect cables in accordance with the local installation laws and regulations.
•Before connecting cables, ensure that the DC switch of the solar inverter and all the switches
connected to it are set to OFF. Otherwise, the high voltage produced by the solar inverter may
cause electric shocks.
Prepare an anti-theft lock suitable for the lock hole diameter (Ф8 mm) by yourself. Ensure that the
lock can be installed successfully.

4
No.
Item
Category
Conductor Cross
-
Sectional Area
Outer
Diameter
1
PE cable
Single
-
core outdoor copper cable
3.5
–5.5 mm2
N/A
2
AC output power cable
Three
-core (U, O, and W)
outdoor copper cable
3.5
–5.5 mm2
10
–21 mm
3
DC input power cable
Common outdoor PV cable in the
industry
3.5
–5.5 mm2
4.5
–7.8 mm
4
RS485 communications
cable
Two
-core outdoor shielded cable
0.25
–1 mm2
4
–11 mm
Connecting the PE Cable
3.2
•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.
•It is recommended that silica gel or paint be used around the ground terminal after the PE cable
is connected.
Connecting the AC Output Power Cable
3.3
Ensure that the protection layer of the AC output power cable is inside the connector, that the core
wires are totally inserted into the cable hole, and that the cable is connected securely. Failing to do
so may cause the device malfunction or damage.
1. Connect the AC output power cable to the AC connector.
Click

5
1. DC terminal connector model: straight male HH4CMD4TMS (Amphenol), straight female
HH4CFD4TMS (Amphenol).
2. Crimp the metal stamping forming contacts using crimping tool H4TC0003 (Amphenol,
recommended), H4TC0002 (Amphenol), PV-CZM-22100 (Staubli), or PV-CZM-19100 (Staubli).
When choosing PV-CZM-22100 or PV-CZM-19100, do not use the locator. Otherwise metal
contacts would be damaged.
3. Ensure that the PV module output side is well insulated to the ground.
4. The DC input voltage of the solar inverter must be lower than or equal to 600 V DC under any
circumstances.
5. Before installing the DC input power cables, label the cable polarities to ensure correct cable
connections.
6. Use the positive and negative metal terminals and DC connectors supplied with the solar inverter.
Using incompatible positive and negative metal terminals and DC connectors may result in
serious consequences. The caused device damage is not covered under any warranty.
7. If the DC input power cable is reversely connected, do not operate the DC switch as well as
positive and negative connectors immediately. Failing to do so may cause the device damage,
which is not covered under any warranty. Wait until the solar irradiance declines at night and the
PV string current reduces to below 0.5 A, and then turn off the DC switch and remove the positive
and negative connectors. Correct the string polarity before reconnecting the string to the solar
inverter.
2. Connect the AC connector to the AC output port.
3. Check the route of the AC
output power cable. To remove the AC connector from the solar inverter,
perform the operations in reverse order. The
following figure shows how to remove a plug insert.
Installing DC Input Power Cables
3.4

6
Positive connector
Negative
connector
Positive metal
contact
Negative
metal contact Ensure that the cable
cannot be pulled out after
being crimped.
Ensure that the
locking nut is
secured.
Ensure that the cable polarities
are correct.
Click
Pull back the DC input
power cable to ensure that
it is in position.
1. Assemble positive and negative connectors.
Pull back the DC input power
cable to ensure that it is in
position.
2. Insert the positive and negative connectors into DC input terminals.
The solar inverter supports Y-branch connectors. It is recommended that the number of PV
modules connected to the same connector be equal on each branch.
Click

7
No.
Label
Definition
Description
No.
Label
Definition
Description
1
485B1
RS485B, RS485
differential signal
–
Used for
cascading solar
inverters or
connecting to
the JX01
terminal block of
the 10
-in 1-out
SmartACBox
2
485A
1
RS485A, RS485
differential
signal+
Used for
cascading solar
inverters or
connecting to the
JX01 terminal
block of the 10
-
in
1
-out
SmartACBox
3
485B2
RS485B, RS485
differential signal
–
4
485A
2
RS485A, RS485
differential
signal+
5
N/A
N/A
N/A
6
N/A
N/A
N/A
7
PE
Shielding ground
N/A
8
PE
Shielding ground
N/A
If only one signal cable needs to be
connected, block unused cable holes
using plugs and tighten cable glands.
Installing the RS485 Communications Cable
3.5
•When laying out the signal cable, separate it from the power cable and keep it away from strong
interference sources to avoid strong communication interference.
•Ensure that the protection layer of the cable is inside the connector, that surplus core wires are
cut off from the protection layer, and that the exposed core wire is totally inserted into the cable
hole and the cable is connected securely.
•For details about the JX01 terminal block of the 10-in 1-out SmartACBox, see page 15.

8
4Verifying the Installation
No.Acceptance Criteria
1 The solar inverter is installed correctly and securely.
2 Cables are routed properly as required by the customer.
3 Cables are evenly tied and no burr exists.
4 The PE cable is connected correctly, securely, and reliably.
5 The DC switch and all the switches connecting to the solar inverter are OFF.
6 The AC output power cable and DC input power cables are connected correctly, securely,
and reliably.
7 Unused terminals and ports are locked by watertight caps.
8 The installation space is proper, and the installation environment is clean and tidy.
Installing an 10-in 1-out SmartACBox
1Overview
Appearance
(1) Handles
(2) Monitoring
compartment door
(3) Enclosure door lock
(4) Power compartment
door
(5) Mounting plate
(6) Mounting bracket
Ports
(1) Waterproof connector
for the RS485
communications cable
(COM)
(2) Waterproof
connector for the
3G/4G antenna
(3G/4G)
(3) Waterproof connector
for the single-phase
power cable (AC
INPUT)
(4) AC output cable
hole (AC
OUTPUT)
(5) AC input cable hole 1
(AC INPUT1)
(6) AC input cable
hole 2 (AC
INPUT2)
(7) USB port (USB)
(8) Ventilation valve
(9) Protective earthing (PE)
point

9
Enclosure Dimensions Mounting Bracket Dimensions
2Installing the SmartACBox
Preparing for the Installation
2.1
Installation Space Expansion Bolt
(1) Expansion sleeve
(2) Flat washer
(3) Spring washer
(4) M12x60 bolt
M12x60 expansion bolts and M12x40 bolt
assemblies are delivered with the
SmartACBox. M12x40 bolt assemblies are
used for support-mounting and pole-mounting
the SmartACBox. Such a bolt assembly
consists of a flat washer, a spring washer, and
an M12x40 bolt.
Installing the Mounting Bracket
2.2
The 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.
Wall-mounted Installation
Avoid drilling holes in the water pipes and cables buried in the wall.

10
•To prevent dust inhalation or contact with
eyes, wear safety goggles and an anti-dust
respirator when drilling holes.
•Clean up any dust in and around the holes
using a vacuum cleaner and measure the
distance between holes. If the holes are
inaccurately positioned, drill a new set of
holes.
•Level the head of the expansion sleeve with
the concrete wall after removing the bolt,
spring washer, and flat washer. Otherwise, the
mounting bracket will not be securely installed
on the concrete wall.
1. Mark hole positions.
3. Secure the mounting bracket.2. Install expansion bolts.
Support-mounted Installation
1. Mark hole positions. 2. Drill holes. (You are
advised to apply anti-rust
paint on the hole positions
for protection.)
3. Secure the mounting
bracket.

11
1. Secure the pole mounting brackets. 2. Secure the mounting bracket.
•To pole-mount a SmartACBox, you need to prepare pole-mounting brackets by yourself based
on the SmartACBox dimensions. You are advised to use M12 U-shaped bolts to secure the
pole mounting bracket.
•The figures are for reference only. The actual pole and pole mounting brackets prevail.
Pole-mounted Installation
Securing the Enclosure
2.3
2. Install the enclosure onto the mounting
bracket. 3. Tighten the security torx screws using a
security torx wrench.
1. Remove the security torx wrench
and enclosure door key from the
base of the enclosure and save them
for later use.

12
3Opening the Enclosure Door
•Before opening the enclosure door, turn off all upstream switches for the SmartACBox. If you have
to operate an energized SmartACBox, wear insulation gloves and take preventive measures.
•If you need to open the enclosure door on rainy or snowy days, take protective measures to
prevent rain or snow from entering the enclosure. If it is impossible to take protective measures, do
not open the enclosure door on rainy or snowy days.
2. Open the enclosure door and install the
support bars. 3. Hold the handles on the cover and remove the cover.
1. Insert the key into the lock hole in the enclosure door and unlock the door.
Remove the four screws from the cover. Start from the one at the lower-left corner, and then the
rest in counterclockwise sequence.
4General Operations
Crimping an OT terminal
4.1
Insulation
layer
Core wire
Heat
shrink
tubing
Heat
gun
Crimping
tool
•Avoid scratching the core
wire when stripping a cable.
•The cavity formed after the
conductor crimp strip of the
OT terminal is crimped must
wrap the core wires
completely. The core wires
must contact the OT
terminal closely.
•Wrap the wire crimping area
with heat shrink tubing or
PVC insulation tape. This
document uses heat shrink
tubing as an example.
•When using a heat gun,
protect devices from being
scorched.

13
Knocking Off the Barrier Chip from a Cable Hole
4.2
•Before connecting the PE cable, AC input power
cable, and AC output power cable for the first
time, knock off the barrier chips from the cable
holes 1 and 2 for the AC input power cable and
the cable hole for the AC output power cable.
•The edges of the cable holes for the AC input
and output power cables are sharp. You are
advised to use a file to smooth the edge of the
cable hole. Protect yourself from being hurt
during the operation.
•The FEK-65B waterproof connectors of Mirai
Industry Co., Ltd. are recommended for the cable
holes for the AC input and output power cables.
No.
Cable
Recommended Model or Specifications
Cross
-
sectional Area
Range of the Cable
1
AC input power cable
Three
-core outdoor copper cable (operating
temperature ≥ 90
°C) with M5 OT terminals
3.5
–8 mm2
2
AC output power
cable
Three
-core outdoor copper cable (operating
temperature ≥ 90
°C) with M12 OT terminals
150
–200 mm2
3
Single
-phase input
power cable
Three
-core outdoor copper cable (operating
temperature ≥ 90
°C) with an M4 OT terminal (PE)
2
–5.5 mm2
4
RS485
communications
cable
Two
-core outdoor shielded RS485
communications cable (single
-core rigid cable
recommended)
0.25
–1 mm2
5
PE cable
Single
-core green outdoor copper cable with an
M6 OT terminal
3.5
–22 mm2
13
Routing a Cable Through a Waterproof Connector (COM)
4.3
1. Remove the locking cap and
plug from the waterproof
connector.
2. Route the cable through the
locking cap and then the
waterproof connector.
3. Connect the cable.
4. Tighten the locking cap.
5Connecting Cables
Preparing Cables
5.1
Prepare cables and OT terminals based on site requirements.

14
Connecting the PE Cable
5.2
•It is recommended that you route
the PE cable to the ground bar
through AC input cable hole 1.
•Connect the PE cable to the
nearest ground bar.
•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.
1. Crimp an OT terminal.
2. Secure the PE cable.
Connecting the Antenna Cable
5.3
1. Remove the screw assemblies from the antenna support, and then remove the antenna support.
2. Install the antenna support on the upper-left side of the enclosure, and use the removed M4 screw
assemblies to secure the antenna support.
3. Place the antenna on the support, and attach the antenna base to the antenna support to secure it.
4. Route the cable to the 4G port on the SmartLogger1000A through any 3G/4G waterproof
connector.
5. Use cable clips to secure the cable.

15
The antenna cable clips
and M4 screw
assemblies are delivered
with the SmartACBox.
6. Install the SIM card of the SmartLogger1000A.
Connecting the RS485 Communications Cable
5.4
Connect the RS485 communications cable of an external device to the RS485-1 or RS485-2 port
on the JX01 terminal block.
No.
Port on the JX01 Terminal Block
Definition
1
RS485
-1(+)_COM1(+)
RS485
-1, RS485 differential signal+
2
RS485
-1(-)_COM1(-)
RS485
-1, RS485 differential signal–
3
RS485
-2(+)_COM2(+)
RS485
-2, RS485 differential signal+
4
RS485
-2(-)_COM2(-)
RS485
-2, RS485 differential signal–
1. Prepare an RS485 communications cable.
The RS485 communications cable and single-phase power cable share a ground point.
Insulate the shielding layer of the RS485 communications cable that is connected to the ground
point in the chassis.

16
2. Connect the RS communications cable to the JX01 terminal block.
(Optional) Connecting a Single-Phase Power Cable
5.5
The power cable for the SmartACBox to supply power to the SmartLogger1000A has been
installed before delivery. If an external power source is required to power the SmartLogger1000A,
disconnect the power cable from the JX02 terminal block, and then connect an external single-
phase power cable to the JX02 terminal block.
1. Prepare a single-phase power cable.
2. Crimp an OT terminal onto the wire
used for grounding.
3. Disconnect cables JX02-1-BOT and
JX02-2-BOT from the JX02 terminal
block.
Insulate the disconnected cables JX02-
1-BOT and JX02-2-BOT.

17
4. Connect the single-phase power
cable to the JX02 terminal block.
Use a torque screwdriver with an M3
flat head to secure the wires
connected to the JX02 terminal block
and use a torque screwdriver with an
M4 Phillips head to secure the wire
used for grounding.
Connecting AC Input Power Cables
5.6
Connect AC input power cables of the SmartACBox to input circuit breakers QF01 to QF05 and QF07
to QF11. It is recommended that AC input power cables be routed to input circuit breakers QF01 to
QF05 through AC input cable hole 1 and be routed to QF07 to QF11 through AC input cable hole 2.
1. Remove an appropriate length of the jacket and insulation layer from each AC input power cable
using a wire stripper.
NOTE
•The lengths of the jackets and insulation layers
that need to be removed from the AC input power
cables to input circuit breakers QF01 to QF05 are
different. When connecting a stripped cable,
ensure that the exposed insulation layer is in the
enclosure, and the jacket is outside the enclosure.
•For the lengths of the jackets and insulation layers
that need to be removed from the AC input power
cables to input circuit breakers QF07 to QF11,
refer to the AC input power cables to input circuit
breakers QF01 to QF05.
Core wire Insulation layer Jacket
2. Crimp OT terminals.
3. Route the cables through AC input cable holes 1 and 2.
4. Connect each AC input power cable to the U, O, and W terminals of the circuit
breaker, and use a torque screwdriver to tighten the bolts.
The right figure shows how to connect an AC input power cable to input circuit breaker QF05.
Connect cables to input circuit breakers QF01 to QF04 and QF07 to QF11 in the same way.
To avoid device damage, do not mix up the U, O, and W terminals when connecting cables.

18
Connecting the AC Output Power Cable
5.7
1. Remove an appropriate length of the
jacket and insulation layer from the AC
output power cable using a wire stripper.
Core wire Insulation layer Jacket
When connecting a stripped cable,
ensure that the exposed insulation layer
is in the enclosure, and the jacket is
outside the enclosure.
2. Crimp OT terminals.
3. Route the cable through the AC output cable hole.
4. Connect the AC output power cable to the U, O, and W terminals on the QF13 circuit
breaker, and use a torque wrench to tighten the bolts.
When using a torque wrench to tighten a bolt, use an M12 wrench to tighten the nut at the same time.

19
6Verifying the Installation
1.
The SmartACBox is installed correctly and securely.
Yes
□No □N/A □
2.
All cables are connected correctly and securely and bound neatly,
without exposed metal.
Yes
□No □N/A □
3. All used waterproof connectors and cable holes at the enclosure bottom
are blocked by firestop putty.
Yes
□No □N/A □
4.
An unused USB port is locked by a watertight cap.
Yes
□No □N/A □
5.
Unused waterproof connectors are plugged with locking caps that are
tightened.
Yes
□No □N/A □
6.
All switches in the enclosure are off.
Yes
□No □N/A □
7.
The enclosure interior is clean, without dust, dirt, or foreign matter.
Yes
□No □N/A □
8.
The paint on the cabinet exterior is intact. If paint has flaked off, repaint
that area to prevent corrosion.
Yes
□No □N/A □