Huawei SUN2000-50KTL-JPM1 User manual

HUAWEI TECHNOLOGIES CO., LTD.
Issue: 05
Part Number: 31500ADX
Date: 2021-09-14
SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0)
Quick Guide

1
Indicator
Status
Description
PV connection
indicator
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 200 V.
Off
The SUN2000 disconnects from all PV strings, or the DC
input voltage of each MPPT circuit is less than 200 V.
Grid
-tied
indicator
Steady green
The SUN2000 has connected to the power grid.
Off
The SUN2000 does not connect to the power grid.
Communicatio
n indicator
Blinking green (on
for 0.2s and then off
for 0.2s)
The SUN2000 receives data over RS485 communication.
Off
The SUN2000 has not received data over RS485
communication for 10 seconds.
•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.
•Before installing the device, carefully read the user manual to get familiar with product
information and precautions.
•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.
•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.
•Use insulated tools when installing the device. For personal safety, wear proper personal
protective equipment (PPE).
•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.
1Product Overview
Indicator Description
Front View
(1) PV connection indicator
(2) Grid-tied indicator
(3) Communication indicator
(4) Alarm/Maintenance indicator
(5) Maintenance compartment door
(6) Host panel cover
Copyright © Huawei Technologies Co., Ltd.
2021. All rights reserved.

2
Indicator
Status
Description
Alarm/Mainte
nance
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 m
ajor 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.
Ports
SUN2000 Dimensions Mounting Bracket Dimensions
(1) Cable gland (COM1, COM2,
and COM3)
(2) DC switch 1 (DC SWITCH 1)
(3) DC input terminals (controlled by DC
SWITCH 1)
(4) DC input terminals (controlled by DC
SWITCH 2)
(5) DC switch 2 (DC SWITCH 2)
(6) Cable gland (AC OUTPUT)
(7) Cable gland (RESERVE)
(8) USB port (USB)

3
2Installation Requirements
Installation Angle
2.1
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 300
mm and 730 mm.
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.
M12x40 bolt assemblies are supplied with the
SUN2000. If the bolt length does not meet
the installation requirements, prepare M12
bolt assemblies by yourself and use them
together with the supplied 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.
Save the security torx wrench for later use
after removing it from the mounting bracket.
3Installing the SUN2000
Position for saving
a security torx
wrench

4
You are advised to apply anti-rust paint on the hole positions for protection.

5
Installation Preparations
4.1
4Installing Cables
No.
Name
Model/
Specifications
Description
1
Ground cable
16
mm2outdoor copper
cable
If you connect the ground cable to
the ground point on the
enclosure,
prepare the ground cable.
2
AC output power
cable
38
mm2outdoor copper
cable
•If you connect the ground cable to
the ground point on the enclosure,
use a three-core cable (U, V, and
W).
•If you connect the ground cable to
the ground point in the
maintenance compartment, use a
four-
core cable (U, V, W, and PE).
There is no need to prepare the
ground cable.
3
OT terminal
M8
When using outdoor copper cables
for AC connection, select copper
wiring terminals. For requirements on
the cables and terminals of other
materials, see the
user manual.
4
DC input power cable
PV cable that meets the
1100 V standard
N/A
5
RS485
communications cable
(terminal block)
Communications cable with
a conductor cross
-sectional
area of 1
mm2and outer
diameter of 14
–18 mm
A terminal block is recommended for
connecting the RS485
communications cable.
RS485
communications cable
(RJ45 network port)
CAT 5E o
utdoor shielded
network cable
with an
outer
diameter less than 9
mm and internal resistance
not
greater than 1.5
ohms/10 m, as well as
shielded RJ45 connectors
6
Cable tie
N/A
N/A
•Before installing cables, ensure that all required OT terminals and cables are prepared.
•The following table lists only recommended cable specifications. For more cable
specifications, see the user manual.

6
Installing the Ground Cable
4.2
•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 " 4.4
Installing AC Output Power Cables."
•The ground cable must be secured.
•It is recommended that the ground 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 ground cable.
Opening the Maintenance Compartment Door
4.3
•Never open the host panel of the SUN2000.
•Before opening the maintenance compartment door, turn off the downstream AC output
switch and the two DC switches at the bottom.
•Do not open the maintenance compartment door in rainy or snowy days. If unavoidable, take
protective measures to prevent rain or snow from entering the maintenance compartment.
•Do not leave unused screws in the maintenance compartment.
2. Open the maintenance compartment door
and install the support bar.
1. Loosen the two screws on the maintenance
compartment door using a security torx
wrench.
PE
M8
8 N·m

7
If the screws on the enclosure door are lost,
obtain spare screws from the fitting bag
bound to the inductor cover at the bottom
of the enclosure.
Position for saving spare screws
3. Remove the cover and hang it on the hook of the enclosure door.
Installing AC Output Power Cables
4.4
1. Remove the sealing nut and rubber liner from the AC OUTPUT cable gland.
2. Route the cable through the cable gland.
1. Select an appropriate rubber fitting based on the outer diameter of the AC power cable to
ensure proper sealing.
2. To avoid damaging the rubber fitting, do not route a cable with a crimped OT terminal
through the rubber fitting.
3. Do not adjust the cable when the thread-lock sealing nut is tightened. Otherwise, the rubber
fitting will shift, which affects the Ingress Protection Rating of the device.

8
L2=L1+3 mm
L1 L1 L2=L1+3 mm
≤ 230 mm ≤ 230 mm
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.)
4. Crimp an OT terminal.
Jacket
Insulation
layer
a. Three-core cable (excluding the ground
cable)
b. Four-core cable (including the ground
cable)
Core wire
Insulation layer
Heat
gun
Hydraulic pliers
Heat shrink
tubing
Core
wire
5. Connect the AC output power cable to the terminal block, and then tighten the nut using a
torque wrench that has an extension rod.
•Ensure that AC terminations provide firm and solid electrical connections. Failing to do so may
cause SUN2000 malfunction and damage to its terminal block, even starting thermal events.
•When connecting a PE cable, secure the screws using a socket wrench with an extension wrench
longer than 200 mm.
•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.

9
a. Three-core cable (excluding the ground
cable)
b. Four-core cable (including the ground
cable)
6. Tighten the thread-lock sealing nut.
7. Clear debris from the maintenance compartment.
Installing DC Input Power Cables
4.5
Selecting DC Input Terminals
The SUN2000 provides two DC switches, named as DC SWITCH 1 and DC SWITCH 2. DC
SWITCH 1 controls the 1st to 6th sets of DC input terminals, whereas DC SWITCH 2 controls the
7th to 12th sets of DC input terminals.
Select DC input terminals according to the following rules:
1. Evenly distribute DC input power cables on the DC input terminals controlled by the two DC
switches.
2. Maximize the number of connected MPPT circuits.
Ensure that the PV module output is well insulated to ground.