Huawei UPS2000-G-6KRTLL User manual

1
Issue: 01
Date: 2020-08-06
UPS2000-G-6KRTLL
Quick Guide
Copyright © Huawei Technologies Co., Ltd. 2020. All Rights Reserved.
1Overview
UPS Model Represented By Weight Dimensions (H x W x D)
UPS2000
-G-6KRTLL
6 kVA
15 kg
131 mm x
438 mm x 480 mm
(1) LCD
(2) MBS port
(3) BMS ports
(4) RS232 communications
port
(5) RS485 communications ports
(connect to northbound devices)
(6) USB
port
(7) AC input and output
terminals (behind the cover)
(8)
Battery input terminal
(behind the cover)
(9
)
Parallel current equalization
ports
(10
) EPO port
(11
) Parallel communications
ports
(12
) Battery PE terminal
The RS485 ports support only the Modbus RTU protocol. For details, see the Modbus
development guide and Modbus user manual.

2
2Installing a UPS
1. Carefully read the UPS2000-G-6KRTLL User Manual prior to installation to get familiar with
product information and safety precautions.
2. Use fully insulated tools during installation and operation.
3. Only engineers certified by the manufacturer or its agent are allowed to install, commission,
and maintain the UPS. Otherwise, personal injury or equipment damage may occur, and the
UPS faults caused are beyond the warranty scope of Huawei.
Rack-Mounting the UPS2000-G
Scenario
1. Reserve a space of 1 U in the middle of four batteries for routing battery power cables.
2. Reserve a space of 5 cm between the battery communications port and the cabinet for
installing a communications cable.
3. Reserve a space of 44 mm between the battery edge and the rack edge for installing
battery power cables.
4. In rack-mounted installation scenarios, the front panels of the UPS and lithium batteries
are not on the same plane.
5. The guide rails for the UPS2000-G-6KRTLL are 592.37 mm to 807.37 mm long, 30 mm
wide, and 87 mm high. The guide rails are scalable and support Huawei M-shaped cabinets.
1. Install mounting brackets on UPS.
UPS mounting ear
dimensions (unit:
mm)

3
2. Install devices from bottom to top, as shown in the figures.
（
1）UPS （2）Lithium batteries

4
3Installing Cables
•Connect UPS AC input and output power cables in the same phase sequence. Connect battery
terminals correctly.
•Before connecting cables to the UPS, ensure that the input, output, and battery circuit breakers
are OFF to prevent operations with power applied.
Installing Cables for a Single UPS
Scenario 1
Wiring Terminal Input (AC INPUT) Output (AC OUTPUT)
External Circuit Breaker 32 A
Earth Leakage Circuit Breaker 100 mA -
Cable Cross-sectional Area 6 mm²
Terminal Type OT-6 mm2-M5 terminal
Torque for Tightening Bolts 2 N·m
1. Install AC input and output power cables.
Installing Power Cables
3.1

5
1. The UPS2000-G-6KRTLL needs to connect to external lithium batteries ESM-48100B1 or
ESM-48150B1. Each UPS supports a maximum of 16 batteries connected in parallel. This
document uses four lithium batteries connected in parallel as an example.
2. When lithium batteries are connected, it is recommended that a DC circuit breaker (150 A 80
V DC circuit breaker for the 6 kVA UPS) be installed between the lithium batteries and the
UPS.
3. Before connecting cables to the UPS, ensure that the battery circuit breakers are OFF to
prevent operations with power applied.
4. If the UPS shares a battery string, the PE bar and battery busbar are configured.
Wiring Terminal Battery (BATT. 48VDC)
External Circuit Breaker 125 A (type D)
Cable Cross-sectional Area 25 mm²
Terminal Type OT-25 mm2-M8 terminal
Torque for Tightening Bolts 7 N·m
2. Install battery cables.
After lithium batteries are connected in parallel, connect signal cables to the BMS ports on
the UPS. Install a build-out resistor at the COM-OUT port on the last lithium battery.
Recommended power cable specifications
（
1）UPS rear view （2）Busbar
Installing battery cables (rack-mounted, front view)

6
Installing Cables for Parallel UPSs
Scenario 2
•Before parallel running, ensure that all output circuit breakers for each UPS are ON.
Otherwise, a UPS fault (error code #72) will occur.
•Batteries must be connected for parallel running.
Installing battery cables (rack-mounted, rear view)
Busbar mounting
hole dimensions
(unit: mm)

7
Two UPSs connected in parallel are used as an example.
（
1）UPS rear view （2）Busbar
Installing battery cables (rack-mounted, front view)

8
Installing battery cables (rack-mounted, rear view)

9
Installing Communications Cables
3.2
1. The USB channel supports a serial data communications protocol between the UPS and a PC.
2. If you connect a DB9 connector to the RS232 port, the UPS can exchange data with the PC
over serial communication.
3. You can use only either USB or RS232.
Install parallel communications cables and parallel current equalization cables. Three UPSs
connected in parallel are used as an example.
(1) Parallel current equalization cables
(2) Parallel communications cables

10
No.
Item
Expected Result
1
Cable routing
Cables are routed properly according to engineering
requirements.
2
Cable connection
All cables are connected securely and correctly, and they are free
of damage. Bolts are tightened to specified torque using a torque
wrench.
3
Cable connection to USB,
network, and other ports
Signal cables to USB, network, and other ports are connected
securely and correctly.
4
Cable labels
Labels are neatly attached to both ends of each cable, and the
information on the labels is concise and legible.
5
Ground cable connection
The UPS ground cable is securely connected to the equipment
room ground bar. Use a
multimeter to measure the resistance
between the UPS ground cable and the equipment room ground
bar. The resistance is less than 0.1 ohm.
6
Spacing between cable
ties
Distances between cable ties are the same, and no burr exists.
7
Operating environment
The inside and outside of the cabinet are free from conductive
dust or other sundries.
Verifying the Installation
4
Operations
5
1. Switch on the external battery circuit breaker (if any).
2. Switch on the external AC input circuit breaker (if any). The UPS enters standby mode.
3. Press and hold SELECT for 1s on a non-setting screen to access the login screen for parameter
settings. The initial password is 123. Enter the correct password to access the UPS setting
mode. On the parameter setting screen, press SELECT to select a parameter, and then press
OFF/ENTER. Set parameters as required.
Default output voltage: 230 V AC; options: 220 V AC, 230 V AC, and 240 V AC
Default output frequency: 50 Hz; options: 50 Hz and 60 Hz
Default battery capacity: 4 (200 Ah), 1 (50 Ah) to 48 (2400 Ah). The value increases by 50 Ah
each time you press SELECT.
Default number of parallel UPSs: 1; value range: 1–4
Setting Key UPS Parameters
5.1

11
Code
Display
Description
Code
Display
Description
00
Exit the setting mode
09
Online
mode(default)
01
Forcibly exit the
fault mode
(disabled by default)
Automatic mode
Enable the function of forcibly
exiting the fault mode. 10s
after you exit the setting
screen, the UPS exits the fault
mode and clears the critical
alarm.
ECO mode
02
Maximum charge current
10
Disable battery
discharge test
(default).
03
Output voltage
Enable battery
discharge test.
04
Number of parallel UPSs
11
SOC percentage
05
Battery discharge time
12
Buzzer on
(default)
07
Battery capacity setting
Buzzer off
08
Output frequency
For details about parameter settings, see the UPS2000-G-6KRTLL User Manual .
Common Settings
Starting the Inverter
5.2
On the standby screen, press and hold down ON/MUTE for more than 5 second. Release the
button when you hear a beep tone. If the UPS starts successfully, it enters the normal mode.
After you ensure that the UPS runs properly, switch on the AC output circuit breaker on the UPS
and start loads.

12
Alarm Handling
6
Shutting Down the Inverter
5.3
1. Shut down loads.
2. Press and hold down OFF/ENTER for more than 5s. Release the button when you hear the
buzzer buzzing. The UPS shuts down the inverter and transfers to bypass mode. If mains
parameters are inconsistent with bypass parameters, the UPS transfers to standby mode.
3. Switch off the UPS AC input circuit breaker (on the power distribution cabinet or external
switch) and output circuit breaker (if any) based on site requirements.
4. Switch off the external battery circuit breaker (if any), or disconnect battery power cables (if
there is no external battery circuit breaker).
Alarm
ID
Alarm
Name
Severity Clearance
Condition
Trigger
Condition
Impact on the
System
Suggestion
01
Fan
blocked
Minor
The fan
automaticall
y recovers
from
blockage.
The fan
blockage
signal is at
low level
for 15s
within 30s.
The current
working status
is not affected.
If
overtemperature
protection is
triggered, the
system may
transfer to
bypass mode.
•
Possible cause:
The fan is
blocked.
Measure: Check
the fan and
remove
sundries.
•
Possible cause:
The fan is faulty.
Measure:
Replace the fan.
02
Overtem
perature
Critical
Fan blocked:
The highest
temperature
of internal
components
is lower than
65
°C. Fan
not blocked:
The highest
temperature
of internal
components
is lower than
50
°C. After
the
temperature
is restored to
normal, the
alarm can be
automaticall
y cleared for
three times.
After that,
you need to
manually
clear the
alarm.
Fan
blocked:
The highest
temperatur
e of
internal
component
s exceeds
80
°C for
100
ms.
Fan not
blocked:
The highest
temperatur
e of
internal
component
s exceeds
90
°C for
100
ms.
The system
shuts down the
inverter and
transfers to
bypass mode.
•
Possible cause:
The
temperature is
too high.
Measure:
Decrease the
ambient
temperature or
load.
•
Possible cause:
The
temperature
sensor is faulty.
Measure: Send
the device to the
maintenance
center.

13
Alarm
ID
Alarm
Name
Severity Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
03
High
battery
voltage
Critical
The alarm is
automatically
cleared when
the battery
voltage is
lower than
58 V.
The battery
voltage is
greater than
60 V for 3s.
The system
shuts down
the inverter
and transfers
to bypass
mode.
•Possible cause: The
battery is faulty.
Measure: Replace
the battery or
discharge the
battery to a normal
voltage.
•Possible cause: The
sampling is faulty
due to
environmental
factors.
Measure: Send the
device to the
maintenance center.
04
Very
low
battery
voltage
Minor
The battery
voltage is
higher than
42 V and the
mains is
connected
properly.
The battery
voltage is
lower than
42 V.
The system
cannot supply
power in
battery mode.
If this alarm
is generated
in battery
mode, the
power output
will be
disconnected.
•Possible cause: The
battery is faulty.
Measure: Replace
the battery or
charge the battery
to a normal voltage.
•Possible cause: The
sampling is faulty
due to
environmental
factors.
Measure: Send the
device to the
maintenance center.
05
Output
short
-
circuit
Critical
The alarm
can be
automatically
cleared for
three times.
After that,
you need to
manually
clear the
alarm or
restart the
device.
The output
voltage is
lower than
50 V and the
current is
higher than
20 A for
more than
five cycles of
time.
The system
disconnects
the power
output.
Possible cause: The
load or cable is
short
-circuited.
Measure: Locate
and rectify the
short
-circuit fault.
06
High
output
voltage
Critical
You need to
manually
rectify the
fault or
power off
and restart
the device.
The output
voltage
exceeds the
rated
voltage by
20 V for 3s.
The system
shuts down
the inverter
and transfers
to bypass
mode.
•
Possible cause:
Load energy
backfeed
occurs.
Measure: Locate the
load and remove it.
•Possible cause: The
circuit is faulty.
Measure: Send the
device to the
maintenance center.

14
Alarm
ID
Alarm
Name
Severity
Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
07
Overloa
d
Critical
You need to
manually
rectify the
fault or
power off
and restart
the device.
The output
overload
time
exceeds
the
specificatio
n.
The system
disconnects
the power
output.
Possible cause: The
load exceeds the UPS
capacity.
Measure: Reduce the
load.
08
High
bus
voltage
Critical
When the
bus voltage
is lower
than 360 V,
the alarm
can be
automatical
ly cleared
for two
times. After
that, you
need to
manually
clear the
fault or
power off
and restart
the device.
The bus
voltage is
greater
than 450 V
for 200
ms
or greater
than 470 V
for 1
ms.
The system
shuts down
the inverter
and transfers
to bypass
mode.
•Possible cause: Power
grid surge occurs.
Measure: Improve the
power grid quality.
•
Possible cause: The
parallel cable is
disconnected when
UPSs are connected in
parallel.
Measure: Check that
the parallel cable and
current equalization
cable are properly
connected.
•
Possible cause: The
circuit is faulty.
Measure: Send the
device to the
maintenance center.
09
Bus
short
-
circuit
Critical
You need to
manually
rectify the
fault or
power off
and restart
the device.
The bus
soft
-start
time
exceeds
15s.
The system
cannot start
inverter
output and
transfers to
bypass mode.
Possible cause: The
circuit is faulty.
Measure: Send the
device to the
maintenance center.
10
EPO
triggere
d
Critical
The EPO
open
-
circuit
status
needs to be
restored
and the
alarm
needs to be
manually
cleared.
The EPO
port is
short
-
circuited.
The system
switches off
the output
and enters
the fault
mode.
Check and restore the
EPO port status.
12
Manual
bypass
activate
d
Minor
The open
-
circuit
status of
the manual
bypass is
restored.
The
manual
bypass port
is short
-
circuited.
The system
transfers to
bypass mode.
Restore the open
-
circuit status of the
manual bypass port.

15
Alarm
ID
Alarm
Name
Severity
Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
13
Phase
lock
failure
Minor
Phase
locking is
successful
or the
bypass is
missing.
The inverter fails
in phase locking
within 10s.
The system
cannot start
PFC or enter
normal
mode.
Possible cause:
The power grid
frequency is
unstable.
17
Bypass
abnorm
al
Minor
The bypass
voltage or
frequency
recovers to
the normal
range.
The bypass
voltage or
frequency is out
of the normal
range.
•
The system
cannot
transfer to
bypass mode
when a
critical alarm
is generated.
•
In bypass
mode, the
power output
is
disconnected.
•
Check that the
bypass
connection is
normal.
•
Check that the
bypass voltage
and frequency are
within their
normal ranges.
18
Low
lithium
battery
level
Minor
The battery
voltage or
SOC rises
above the
alarm
threshold.
Communication is
normal, but the
SOC is lower than
20%.
Communication is
abnormal, and
the battery
voltage falls to
47 V DC.
The battery
level is close
to the cutoff
threshold. If
there is no
mains input,
the system
will shut
down after
working for a
period of
time.
Possible cause:
The battery
charge level is
low.
Measure: Charge
the battery.
19
Abnor
mal
mains
voltage
Minor
The mains
voltage
input
recovers.
•
The mains is
disconnected or
fails.
•The mains input
voltage harmonic
exceeds 10%
(square wave
input is not
supported).
•
The mains
frequency change
rate exceeds the
phase lock rate
defined in the
specifications (2
Hz/s for a single
UPS and 1 Hz/s
for a parallel
system).
The system
cannot work
in normal
mode. If this
alarm is
generated in
normal
mode, the
system
transfers to
battery
mode.
Check whether
the mains voltage
input is normal. If
the circuit is
faulty, send the
device to the
maintenance
center.

16
Alarm
ID
Alarm
Name
Sever
ity
Clearance
Condition
Trigger
Condition
Impact
on the
System
Suggestion
20
Lithium
battery
high
tempera
ture
protecti
on
Minor
The cell
temperatur
e drops
below the
protection
threshold.
•
Charge high
temperature
protection: The
maximum cell
temperature is
greater than
60
°C.
•
Discharge high
temperature
protection: The
maximum cell
temperature is
greater than
65
°C.
The
internal
switch
circuit of
the lithium
battery is
disconnect
ed, and
the battery
cannot be
charged or
discharged
.
Possible cause: The
ambient temperature
of the lithium battery
is too high. There are
abnormal heat sources
around the lithium
battery.
Measure: If the lithium
battery cannot be
recovered due to
protection against
abnormality, contact
local Huawei
engineers to rectify
the fault.
21
Lithium
battery
low
tempera
ture
protecti
on
Minor
The cell
temperatur
e rises
above the
protection
threshold.
•
Charge low
temperature
protection: The
minimum cell
temperature is
less than 0
°C.
•
Discharge low
temperature
protection: The
minimum cell
temperature is
less than
–20°C.
The
internal
switch
circuit of
the lithium
battery is
disconnect
ed, and
the battery
cannot be
charged or
discharged
.
Possible cause: The
ambient temperature
of the lithium battery
is too low. The heater
cannot work properly.
Measure: If the lithium
battery cannot be
recovered due to
protection against
abnormality, contact
local Huawei
engineers to rectify
the fault.
22
Lithium
battery
high
voltage
protecti
on
Minor
The cell or
battery
string
voltage
drops
below the
protection
threshold.
•
The busbar
voltage is greater
than 59.4 V in
charging state.
•
The maximum
cell voltage is
greater than 3.8
V.
•Considering cell
difference, the
maximum cell
voltage can be
3.9 V.
•
The battery
string voltage is
greater than 55
V.
The
internal
switch
circuit of
the lithium
battery is
disconnect
ed, and
the battery
cannot be
charged or
discharged
.
Possible cause: The
busbar voltage input is
abnormal and exceeds
the normal range. The
cell consistency is
abnormal. The
capacity attenuation is
too fast or the internal
resistance is too large.
Measure: If the lithium
battery cannot be
recovered due to
protection against
abnormality, contact
local Huawei
engineers to rectify
the fault.

17
Alarm
ID
Alarm
Name
Severity Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
23
Lithium
battery
low
voltage
protecti
on
Minor
The cell or
battery
string
voltage
rises above
the
protection
threshold.
The lithium
battery voltage
is less than 44
V.
The minimum
cell voltage is
less than 2.5 V.
The internal
switch circuit
of the
lithium
battery is
disconnected,
and the
battery
cannot be
charged or
discharged.
Possible cause: The
mains power has
failed and not been
recovered for a long
time. The cell
consistency is
abnormal. The
capacity attenuation
is too fast or the
internal resistance is
too large.
Measure: If the
lithium battery
cannot be recovered
due to protection
against abnormality,
contact local
Huawei engineers to
rectify the fault.
24
Lithium
battery
overcur
rent
protecti
on
Minor
The battery
discharge
current
drops below
the
protection
threshold.
Discharge
current ≥ 0.93
times of the
current limit
and
Vbus ≤ 40
V for 15s
Discharge
current ≥ 0.98
times of the
current limit
and
Vbus < 17
V for 8s
The internal
switch circuit
of the
lithium
battery is
disconnected,
and the
battery
cannot be
charged or
discharged.
Possible cause: The
UPS is overloaded.
The number of
working batteries is
insufficient.
Measure: Reduce the
load. Add batteries.
25
Lithium
battery
fault
Minor
The alarm is
not cleared.
After
batteries
are reset,
check the
status
again.
The cell voltage
sampling circuit
is faulty.
The cell
temperature
sampling circuit
is faulty.
The cell voltage
is too high or
too low.
The cell
temperature
increases
abnormally.
The cell voltage
is severely
unbalanced.
BMS board
circuit fault
The internal
switch circuit
of the
lithium
battery is
disconnected,
and the
battery
cannot be
charged or
discharged.
Possible cause:
sampling fault (see
the telecom power
manual); cell or
equalization circuit
fault; charger
converter short
-
circuit, relay fault;
switch tube fault
Measure: Restart the
lithium battery. If
the fault persists,
replace the lithium
battery.

18
Alar
m ID
Alarm
Name
Severity
Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
26
Lithium
battery
excepti
on
protecti
on
Minor
Check again
after the
fault is
rectified.
The
busbar
voltage is too
high.
The
temperature
of the board
relay and
switch tube is
too high.
The output is
short
-
circuited.
Batteries are
reversely
connected.
The output is
overloaded.
The internal
switch circuit
of the lithium
battery is
disconnected,
and the
battery
cannot be
charged or
discharged.
Possible cause: The
UPS is overloaded,
the host charger is
abnormal, or battery
cables are incorrectly
connected.
Measure: Check the
cable connection,
check the host status,
or reduce the load.
27
Battery
dischar
ge est
functio
n
enable
d
Minor
The battery
discharge
test is
complete.
Battery
discharge test
is enabled
manually.
The system
transfers to
battery mode.
Measure: Turn off
the battery discharge
test mode switch.
Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang
Shenzhen 518129 People's Republic of China
www.huawei.com