LUXPOWER SNA-US 12000 Hybrid Off Grid Inverter User Manual

SNA-US 12000 Hybrid Off Grid Inverter

Specifications

• Model: SNA US 12K

• Version: UM-SNAUS02001

• Features: Wifi/4G, Solar Panel, LuxPower APP

• Interfaces: PV Interface, GRID Interface, GEN Interface, LOAD
  Breaker, SMART LOAD Breaker

• Packing List: Offgrid inverter, User Manual, Expansion Screw
  and Tube, Mounting Template, Wi-Fi Module, Battery communication
  cable, Parallel communication cable

Product Usage Instructions

1. Installation

Before installation, inspect the unit and ensure nothing is
damaged. Follow the mounting template for proper placement.

2. Operation

Ensure the inverter is connected to the appropriate power
sources and loads as per the interface markings.

3. Troubleshooting

If you encounter any issues with the inverter, refer to the
Troubleshooting & Error List section in the user manual.

FAQ

Q: What should I do if the inverter is not powering on?

A: Check the power connections and ensure the power switch is
turned on. If the issue persists, consult the Troubleshooting
section of the user manual.

Q: How do I connect the inverter to my smart load?

A: Use the SMART LOAD Breaker interface on the inverter and
follow the connection instructions provided in the user manual.

Off-grid Inverter User Manual
SNA US 12K

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Battery Breaker

L1 L2 L1 L2 Smart Load Load

Version: UM-SNAUS02001

User Manual
Copyright© 2024 Lux Power Technology Co., Ltd. All Rights Reserved. This manual, protected by the copyright and intellectual property rights of Lux Power Technology, may not be modified, copied, or reproduced without prior written permission. Brands and trademarks mentioned belong to their respective owners. Read carefully for product reliability and warranty eligibility. For warranty details, refer to Lux Power Technology Limited Warranty. Intended for professional service providers; no statements constitute an express or implied warranty. Descriptions may contain predictive statements; differences may occur. Provided for reference, subject to change without notice by Lux Power Technology.

Website
www.luxpowertek.com

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Table Of Contents
Information on this Manual Validity Scope Target Group Safety Instructions 1. Brief Introduction 1.1 Features of the inverter 1.2 Interface of the inverter 1.3 Packing list 2. Installation 2.1 Preparation 2.2 Mounting the Unit 2.3 Battery Connection 2.3.1 Battery Power Cable Connection 2.3.2 Lithium Battery Connection 2.4 AC Input/Output Connection 2.5 PV Connection 2.6 Generator Connection 2.7 System Connection 2.8 Dry Contact Signal control 2.9 Parallel function 2.10 Power ON/OFF 2.11 Rapid Shutdown system Installation(RSD Transmitter) 3. Working Modes 3.1 Offgrid modes introduction 3.2 Working modes related setting description 4. LCD Display and settings 4.1 RGB Display

User Manual
1 1 1 1 1 2 2 3 4 6 6 8 9 9 9 10 11 12 13 14 14 16 17 17 17 19 21 21

4.2 LCD Display 4.3 Inverter Status Display 4.4 LCD Settings 5. About LCD Settings check the operation 6. Monitor System for Offgrid 7. Specifications 8. Trouble Shooting & Error List

User Manual
21 23 24 36 37 38 42

Revision History
Version
UM-SNAUS02001

Date 2024.06.25

Description First official release.

User Manual
Information on this Manual
Validity
This manual is valid for the following devices: SNA-US 12000
Scope
This manual provides the installation, operation and troubleshooting of this unit, please read this manual carefully before installations and operations.
Target Group
For qualified persons and end users. Qualified persons and end users must have the following skills: Knowledge about this unit operation Training in deal with the security issues associated with installations and electrical safety Training in the installation and commissioning of electrical devices and installations Knowledge of the applicable local standards and directives
Safety Instructions
WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.
All the operation and connection need to be operated by qualified persons. Before using the unit, read all instructions and cautionary marking on the unit. Any damage caused by inappropriate operation is not warranted by Luxpower. All the electrical installation must comply with the local electrical safety standards. Do not disassemble the unit. Take it to a qualified service center when service or repair is required, incorrect re- assembly may result in a risk of electric shock or fire. Do not open inverter cover or change any components without Luxpower’s authorization, otherwise the warranty commitment for the inverter will be invalid. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning, turning off the unit will not reduce this risk. CAUTION-To reduce risk of injury, charge only deep-cycle lead-acid type rechargeable batteries and lithium batteries, other types of batteries may burst, causing personal injury and damage. NEVER charge a frozen battery. For optimum operation of this unit, please follow required spec to select appropriate cable size and breaker. Please strictly follow installation procedure when you want to disconnect AC or DC terminals, please refer to INSTALLATION section of this manual for the details. GROUNDING INSTRUCTIONS -This unit should be connected to a permanent grounded wiring system, be sure to comply with local requirements and regulation to install this inverter. NEVER cause AC output and DC input short circuited. Do not connect to the mains when DC input short circuits.
1

1. Brief Introduction
1.1 Features of the inverter

Wifi/4G

Solar Panel

User Manual

Internet

LuxPower APP

User name Pass word

Remember username

Auto login

LOGIN

Forget password?

or

REGISTER DONGLE CONNECT PRODUCT WARRANTY LOCAL CONNECT DOWNLOAD FIRMWARE Version 3.2.3 – Privacy Policy

Luxpower Server

Utility Grid

UP

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Enter

Down

Battery Breaker

L1 L2 L1 L2
Smart Load Load

Home Loads

Generator

Battery
SNA series is a multifunctional, high frequency pure sine wave Offgrid inverter solar inverter, features: Applicable for pure off grid inverter / backup power / self-consumption / ongrid situation Integrated with 2 MPPT solar charge controllers, MPPT ranges 120V~385V Each PV input MPPT supports up to 12kW, with a total input power of 24kW when both PV inputs are used, and a power factor of 1. Be able to run with or without battery in ongrid and offgrid mode With separated generator input interface, able to control generator remotely With integrated advanced parallel function, up to 6pcs max paralleling Support CAN/RS485 for Li-ion battery BMS communication WIFI/ GPRS remote monitoring, setting and firmware update, support website, free IOS/Android APP
2

1.2 Interface of the inverter

User Manual

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OFF
ON OFF ON POWER

SC1 50 49

BAT+ BAT-

ON

BAT.NTC
M3.COM CT1 CT2

CN10

CN3

CN2

ON

BAT.COM Parallel

L1 L2
Smart Load

L1 L2 Load

L1 L2 Gen

L1 L2 Grid

1+ 1+ 1- 1- 2+ 2+ 2- 2PV INPUT

GND 12V GND PSD.SW COM1 NO1 NC1 COM2 NO2 NC2

N

PE

PV Interface

OFF ON EPS OUTPUT

PV Switch

BAT+ Breaker

Power on/off switch

GRID Interface GEN Interface LOAD Breaker SMART LOAD Breaker

WiFi/GPRS EPS on/off switch

BAT.NTC M3.COM

CT1 CT2

Parallel communication Resistor switch

BAT.COM Parallel

Parallel communication ports Battery CAN /RS485

NC2

NO2

COM1 NO1 NC1 COM2

PSD.SW

GND

12V

GND

Dry contacts
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User Manual
1.3 Packing List
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items in the package:

Offgrid inverter X1

Off-grid Inverter User Manual
SNA US 12K

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Battery Breaker

L1 L2 L1 L2 Smart Load Load

Version: UM-SNAUS02001
User Manual X1

Expansion Screw and Tube X6

Cross Head Screw M8(6PCS)
M3*10(4PCS)

Mounting Template

Wi-Fi Module X1

Battery communication cable L=2mx1(Orange)

Parallel communication cable L=2mx1(Grey)

Storing the Inverter
The inverter must be stored appropriately if not installed immediately, refer to below figure.
! CAUTION
a) The inverter and its components must be stored in its original packaging. b) The storage temperature should be within -13~140 F(-25~60) and humidity within 0~85%. c) The packing should be upright and maximum stacked layers is 6 . d) Do not directly exposed the inverter and its packaging to sunshine, raindrops and keep away
from corrosion.

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User Manual

Te m p e ra t u re < 6 0

Height<6.6ft Height<2m

Humidity<85%
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2. Installation
2.1 Preparation
The system connection is as below:

600V, 2*4AWG

Grid 600V, 24AWG
Load 600V, 24AWG
Smart Load 600V, 2*4AWG

B AT

GEN PV1 PV2

L1 L2 PE
L1 L2
L1 L2
L1 L2 N
600V, 4*8AWG

QF1 QF2

Grid PE
LOAD1 LOAD2
G Generater

QF 1 In 100A QF 2 In 63A QF 1 is Double interlock switch or Dual Power Switch In 100A

MAX: 250A 100V, 21/ 0AWG or 42AWG

Please prepare the breakers and cables in advanced before installation.

1. Battery connection: For safety operation and regulation compliance, it’s requested to install a separate DC over-current protector or disconnect device between battery and inverter. The recommend battery capacity is 200AH-400AH, the spec of DC breaker is 300A/80V. Recommended battery cable and terminal size:

Model

Maximum Battery Amperage capacity

Wire Size

Ring Terminal Cable Dimensions Torque value mm2 d2(mm) L (mm)

SNA-US 12000 250A 400AH 1/0AWG 53

8.4 38.8 11-12 Nm

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User Manual

2. AC connection: Please install a separate AC breaker between inverter and AC input power source, inverter and AC output load. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input. Recommended AC input/ AC output /GEN cable size for each inverter.

Model

Gauge

AC INPUT(GRID side)

GEN INPUT(GEN side) SNA-US 12000
AC OUTPUT(LOAD side)

AC OUTPUT(SMART LOAD side)

Cable (mm2)

4AWG

21

6AWG

13

4AWG

21

6AWG

13

Torque Value 11-12 Nm 11-12 Nm 11-12 Nm 11-12 Nm

3. PV Connection: Please install separately a DC circuit breaker between inverter and PV modules. The spec of DC breaker is 600V/40A. It’s very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper recommended cable size as below:

Model SNA-US 12000

Gauge 8AWG

Cable (mm2) 8

4. Before connecting all wiring, please take off bottom cover by removing 4 screws as shown below.

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User Manual
2.2 Mounting the Unit
NOTICE Consider the following points before selecting where to install: Mount on a solid surface Do not mount the inverter on flammable construction materials. For proper air circulation to dissipate heat, allow a clearance of approx. 30 cm to the side and approx. 50 cm above and below the unit. The ambient temperature should be between 0°C and 45°C to ensure optimal operation. The recommended installation position is to be adhered to the wall vertically.
Steps to mounting the unit
Step1. Use the wall-mounting bracket as the template to mark the position of the 6 holes, then drill 8 mm holes and make sure the depth of the holes is deeper than 50mm. Step2. Install the expansion tubes into the holes and tight them, then use the expansion screws (packaged together with the expansion tubes) to install and fix the wall-mounting bracket on the wall.
Step3. Install the inverter on the wall-mounting bracket and lock the inverter using the security screws.
344mm

800mm

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Battery Breaker

L1 L2 L1 L2
Smart Load Load

500mm

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Battery Breaker

L1 L2 L1 L2
Smart Load Load

200mm

UP

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Enter

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Battery Breaker

L1 L2 L1 L2
Smart Load Load

200mm

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Enter

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Battery Breaker

L1 L2 L1 L2
Smart Load Load

500mm

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User Manual

2.3 Battery Connection 2.3.1 Battery Power Cable Connection
Note: for lead acid battery, the recommended charge current is 0.1-0.25C( C to battery capacity)
1. Please follow below steps to implement battery connection: 2. Assemble battery ring terminal based on recommended battery cable and terminal size. 3. Connect all battery packs as units requires. It’s suggested to connect at least 400Ah capacity battery for SNA-US 12000. 4. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are tightened with torque of 11 -12Nm. Make sure polarity of the battery is correctly connected and ring terminals are tightly screwed to the battery terminals.

2.3.2 Lithium Battery Connection
If choosing lithium battery for SNA-US 12000, please make sure the battery BMS is compatible with Luxpower inverter. Please check the compatible list in the Luxpower website.

Please follow below steps to implement lithium battery connection:
1. Connect power cable between inverter and battery 2. Connect the CAN or RS485 communication cable between inverter and battery. If you do not get the communication cable from inverter manufacturer or battery manufacturer, please make the cable according to the PIN definition 3. Lithium battery configuration, in order to communicate with battery BMS, you should set the battery type to “Li-ion” in Program “03” by LCD and choose the right battery brand (for details, please check the LCD setting chapter), users can also choose the battery type and brand by monitor system.

BAT.NTC M3.COM

CT1 CT2

ON
Blue Color Switch 12
Pin RS 485 port CAN port

1 2 3 4 5 6 /7 /8

RS 485B RS 485A
– – – – – – – – –

– – – – – – –
CA NH CA NL
– – –

BAT.COM Parallel
Inverter

Battery Pack

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User Manual
2.4 AC Input/Output Connection
! CAUTION – There are two terminal blocks with “GRID” and “LOAD” markings. Please do NOT mis-connect input and output connectors. – Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility short-circuited when these inverters are worked in parallel operation.
Please follow below steps to implement AC input/output connection: 1. Before making AC input/output connection, be sure to open DC protector or disconnected first. 2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm. 3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be sure to connect PE protective conductor first. 4. Insert AC output wires according to polarities indicated on terminal block and tighten terminal screws. Be sure to connect PE protective conductor first. 5. Make sure the wires are securely connected.

10 L1LINE (black)

L2LINE (red)

NNeutral (blue)

10

PEGround(green)

BAT+ BAT-

GND 12V GND PSD.SW COM1 NO1 NC1 COM2 NO2 NC2

BAT.NTC M3.COM

CT1 CT2

BAT.COM Parallel

L1 L2
Smart Load

L1 L2
Load

1+ 1+ 1- 1- 2+ 2+ 2- 2-

PV INPUT

L1 L2 L1 L2

Gen

Grid

N

PE

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User Manual
2.5 PV Connection
Please follow below steps to implement PV module connection: 1. Remove insulation sleeve 10 mm for positive and negative conductors. 2. Check correct polarity of connection cable from PV modules and PV input connectors. 3. Connect positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of PV input connector. 4. Make sure the wires are securely connected.

BAT+ BAT-

GND 12V GND PSD.SW COM1 NO1 NC1 COM2 NO2 NC2

BAT.NTC M3.COM

CT1 CT2

BAT.COM Parallel

L1 L2
Smart Load

L1 L2
Load

1+ 1+ 1- 1- 2+ 2+ 2- 2-

L1 L2 L1 L2

Gen

Grid

PV INPUT

N

PE

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User Manual
2.6 Generator Connection
L1LINE (black) L2LINE (red) NNeutral (blue) 1. Before making Generator connection, be sure to open DC protector or disconnected first. 2. Remove insulation sleeve 10mm for 2 conductors. 3. Insert L1/L2 and N wires according to polarities indicated on terminal block and tighten the terminal screws 4. Make sure the wires are securely connected. 5. Finally, after connecting all wiring, please put bottom cover back by screwing 4 screws as shown below.

BAT+ BAT-

GND 12V GND PSD.SW COM1 NO1 NC1 COM2 NO2 NC2

BAT.NTC M3.COM

CT1 CT2

BAT.COM Parallel

L1 L2 Smart Load

L1 L2 Load

1+ 1+ 1- 1- 2+ 2+ 2- 2-

PV INPUT

L1 L2 L1 L2

Gen

Grid

N

PE

All lux units can work with generator. Users can connect the generator output to Offgrid inverters. GEN input terminal. The generator will be automatically started when battery voltage is lower than the cut-off value or there is charge request from BMS. When voltage is higher than AC charge setting value, it will stop the generator. Battery will get charged when the generator is turned on, and the generator is bypassed to AC output to take all loads .

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2.7 System Connection
The system connection diagram is as below (for US version)

User Manual

PV Breakers

UP

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Battery Breaker

L1 L2 L1 L2
Smart Load Load

Smart

BAT

Load EPS GEN Grid PV

PE N L1 L2 L1 L2 L1 L2 L1 L2

Generator Breaker

Gride Breaker

N PE
PE

Battery Breaker

Load Breaker Smart Load Breaker

UPS L o ad

Breakers selection for both DC and AC Integrated Battery Breaker Integrated LOAD Breaker Smart Load Breaker Integrated PV Breaker

80Vdc/300A 480Vac/100A
480V/63A 1500V/50A

The system will use AC first if there is both utility input and generator input.

The capacity of the generator is recommended

Number of the single parallel inverter

Capacity

Single inverter

15K W

2 parallel

30K W

It is supported to parallel 2~3pcs inverter with single phase in single phase parallel system to

charge battery with Generator! And it is depends on the load performance of the generator too.

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User Manual

2.8 Dry Contact Signal control
The Dry port (NO2, COM2) could be used to deliver signal to external device when battery voltage reaches warning level. The GEN port (NO1, COM1) could be used to wake-up the Generator and then the generator can charge the battery.

Dry port
NO2 COM2

GEN
NO1 COM1

Unit Status

Condition

Power Off Power On

Inverter is off and no output is powered.

Without Grid With Grid

Battery voltage/SOC < Generator Charge Start Voltage/SOC Battery voltage/SOC > Generator Charge EndVoltage/SOC
Battery voltage/SOC < Generator Charge Start Voltage/SOC
Battery voltage/SOC > Generator Charge EndVoltage/SOC

NO2 & COM2
Open Close Open
Close Open

NO1 & COM1
Open Close Open Open Open

Notice: NO—Normal open

Dry Port Relay Maximum Specification: 250VAC 5A Gen Port Relay Maximum Specification: 250VAC 5A

2.9 Parallel function
SNA series inverter support up to 6 units to composed single phase parallel system for parallel system setup Step1. Cable connection: the system connection is as below: a. 12kW × 3 Parallel single-phase system installation connection (3 @ 240V/120V)

! Cannot share PV input at any time!

Master inverter #1
BAT+ BAT-

LOAD GEN GRID PV+ PVPE N L1 L2 L1 L2 L1 L2

Utility Combiner Box

L1

L2

N

L1 L1

PE

L2 L2

L1

L2

Utility Meter
Kw.h
7 9 86 6
480r/km.h 10A

Inverter #2 BAT

LOAD GEN GRID PV+ PV-
PE N L1 L2 L1 L2 L1 L2

Inverter #3

–

BAT

LOAD GEN GRID PV+ PV-
PE N L1 L2 L1 L2 L1 L2

Load Combiner Box

L1

L2

N

L1 L1

PE

L2 L2

L1

L2

Manual Bypass Switch

Generator Combiner Box

L1

L2

L1 N

L2
PE
Panel

N

L1 L1

PE

L2 L2

L1

L2

Load

PE

N L1

Generator

L2

Please put the 2-bit CAN balancing resistor switch to ON status for the first and end inverter of the daisy chain loop.

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User Manual

b. 12kW × 3 Parallel three-phase system installation connection (3 @ 208V/120V)

! Cannot share PV input at any time!

Master inverter #1 Three inverters in parallel: Set as U-phase

BAT+ BAT-

LOAD GEN GRID PV+ PVPE N L1 L2 L1 L2 L1 L2

Utility Combiner Box
U VW

N
U

PE

W

V

Utility Meter
Kw.h
7 9 86 6
480r/km.h 10A

Inverter #2 BAT

Three inverters in parallel: Set as V-phase LOAD GEN GRID PV+ PV-
PE N L1 L2 L1 L2 L1 L2

Inverter #3

Three inverters in parallel: Set as W-phase

–

BAT

LOAD GEN GRID PV+ PV-
PE N L1 L2 L1 L2 L1 L2

Load Combiner Box

U VW

N
U

PE

W

V

Manual Bypass Switch

Generator Combiner Box

U VW

N

U

PE

W

V

U VW

N

PE

Panel

Load

PE

N U

Generator

V W

Please put the 2-bit CAN balancing resistor switch to ON status for the first and end inverter of the daisy chain loop.

Step2. Please put the CAN communication PIN to on status for the first and the end inverter

11 1 ON 3 0 12

No.1

00

1

ON
n 36

0 12

No.2

00 1 ON 0 12 3

No.n-1

11 1 ON
3 0 12

No.n

BAT COM

Parallel
4

BAT COM Parallel line1

The max parallel quantity is 6, so 2

Parallel
4

BAT COM Parallel line2

Parallel line(n to 1)

Parallel
4

BAT COM Parallel line(n-1 to n)

Parallel
4

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T T

T T

Step3. Setup the monitor for the system, add all datalogs in one station. Users can login to the visit User Center
interface of monitor system, Configuration->station->Plant Management->add datalog to add the datalogs.

Stations
Dongles Devices Users Operation Record

Monitor

Data

+ Add Station

Configuration

Overview

Maintenance

Plant name 1 Genesis 2 Butler Home 3 Offic e 4 Cronje Home

Installer Elangeni Broomhead

End User Aspergo Install johnbut ler
cronje

Country South Africa South Africa South Africa South Africa

Timezone GMT+2 GMT+2 GMT+2 GMT+2

Asia

A English

Search by station name

Daylight saving time Create date

No

2019-03-14

No

2019-03-25

No

2019-06-03

No

2019-07-16

Action Station Management Station Management Station Management Station Management

Step4. Enable share battery for the system if the system share one battery bank, otherwise disable the shared battery function

Step5. Set the system as a parallel group in the monitor system

Stations Overview Device Overview

Monitor

Data

Station Name

Configuration

Overview

Maintenance

Asia

A English

Search by inverter SN

Serial number
1 2 3 4

Status

Solar Power Charge Power Discharge Power Load

Solar Yield

Normal 228 W

42 W

0 W

35 W

32 W

0 W

1 kW

129 W

0 W

79 W

48 W

0 W

182 W

215.3 kWh

0 W

158.7 kWh

1 kW

170.3 kWh

106 W

99 kWh

Battery Dischar Feed Energy ConsumptionEr Station name Parallel Action

39.6 kWh 21.1 kWh 49.9 kWh 85.6 kWh

0 kWh 0 kWh 0 kWh 0 kWh

551.2 kWh 160.5 kWh 434.5 kWh 257.1 kWh

Dragonview

A-1

Parallel

Dragonview

A-2

Parallel

Dragonview

A-3

Parallel

Dragonview

A-4

Parallel

For more detailed guidance for paralleling system, please visit https://www.luxpowertek.com/download/ And download the guidance

2.10 Power and LOAD ON/OFF

OFF ON EPS OUTPUT

ON POWER

OFF

ON

OFF

1. Power Switch: Control power supply for the unit 2. LOAD Output Switch: Use to control the AC output After connection, please turn on both switch. Users can turn off the LOAD output switch to turn off power supply in some emergency case
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2.11 Rapid Shutdown system Installation (RSD Transmitter)

CT1

CT2

User Manual

GND 12V GND PSD.SW COM1 NO1 NC1 COM2 NO2 NC2

BAT COM

Parallel

P 1 -RS485B BAT COM: Battery comm Port P2-RS485A Parallel: PCS parallel comm port P4—CANH 120: Paralle balance resistor P5—CANL Only used for first and last PCS

P1-RS485B P2-RS485

PV INPUT

Provide 12Vdc/1.5A output when inverter is on. Cut off supply 12Vdc when Emergency stop switch is ON and SW is shorted.
3. Working modes
3.1 Offgrid inverter modes introduction:
Bypass Mode
PV Charge Bypass

AC is used to take the load
PV charge the battery while the AC power the load

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BAT Grid off PV+BAT Grid off
PV Charge PV Charge+Grid off
AC Charge PV+AC charge
PV Grid off
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User Manual
Battery is used to take the load
PV+Battery power the load together
1. When the LOAD key off, the inverter charge the battery only 2. When the battery is power off, the PV can wake up the battery automatically
PV charge the battery and power the load
1. AC charge the battery from AC Input or GEN Input 2. When the battery is power off, the AC can wake up the battery automatically
NOTE: The output power depends on the PV energy input, if the PV energy is unstable, witch will influence the output power
When setting without battery, the PV can power the load.

3.2 Working Modes related setting description

Situation

Setting 1

Setting 2

AC abnormal

NA

NA

In the AC first time

NA

Working modes and Description
off grid inverter mode if P_Solar>=P_load, solar is used to take load and charge battery if P_Solarv<P_load, solar and battery take the load together, system will discharge until battery lower than the Cut Off Voltage/SOC
Bypass Mode AC will take the load and Solar is used to charge battery

AC normal

Enable AC charge and in the AC charge time

AC charge accroding to Time

Bypass Mode+AC charge battery Solar is used to charge battery AC will take load and also charge battery during AC charge time if solar power is not enough

AC charge accroding to SOC/Battery voltage

Bypass Mode+AC charge battery Solar is used to charge battery AC will take load and also charge battery when battery SOC/Volage is lower than start SOC/Voltage, and the AC will stop charging when the battery Voltage/SOC is higher than AC end charge battery voltage/SOC

off grid inverter mode

1. Not in the AC first time and

if P_Solar>=P_load, solar is used to take load and charge

2. Disable AC charge or not

NA

battery if P_Solar<P_load, solar and battery take the load

in the AC charge time

together, system will discharge until battery lower than

EOD Voltage/SOC

User Manual
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User Manual
1. SNA-US 12000 can working as a traditional off grid inverter. In this situation, inverter either use (solar+battery) to take load or use AC take load. Related settings
AC First: During the setting time, system will use AC to take load first, use solar power to charge the battery. If the battery is full, solar power may be wasted. When out of the setting time, system will use battery and solar to take load until battery voltage/SOC is lower than cut off voltage/SOC
2. AC Charge function Disable: The system will not use AC to charge the battery(except Li ion BMS set force charge flag )
According to Time: During the setting time, system will use AC to charge the battery until battery full and battery will not discharge during the setting time. According to Battery Voltage: During the setting time, system will use AC to charge the battery if battery voltage is lower than AC Charge Start Battery Voltage and will stop when Voltage is higher than AC Charge End Battery Voltage. And battery will not discharge during the setting time. According to Battery SOC: During the setting time, system will use AC to charge the battery if battery SOC is lower than AC Charge Start Battery SOC and will stop when Voltage is higher than AC Charge End Battery SOC. And battery will not discharge during the setting time.
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4. LCD display and settings
4.1 RGB Display

4.2 LCD Display

LED Indicator

Messages

1 Green Rotate Normal

2 Yellow Rotate Warning

3 Red Rotate

Fault

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NO.

Description

Remarks

1

Generally Information

Display Area

2

Solar inverter output power

3

Battery information and data

Display the currently time/date by default.
This area shows the data of Two-chnnel PV voltage and power.
This area shows the battery type,(lithium battery or lead Acid battery),display the voltage, SOC , input and output power.

4

LOAD output information

and data

5

Loads consumption

6

Grid information and

Generator information

7

Working status text

display area

This area will display LOAD voltage, frequency, power.
Display the power consumption by the loads in on grid model.
Display the grid (Power pylon) information of voltage, frequency, input or output power, the Generator (dynamo) information of voltage, frequency, input power.
This area displays the status code of the SNA-US 12000 inverter, including rated running status text, the code for the alarm and the code error.

22

4.3 Inverter Status Display

User Manual

When the SNA-US 12000 inverteris running normally, the text information corresponding to the current working status is displayed in the red box, such as PVGridOn or PVCharge.

Warning Status, warning 04

Fault status, fault 02

Flash status: download percent is 58%

If the system displays the icon in the red box. Indicates that the AC input port is connected to the power grid.

When the icon in the red box is displayed, it indicates that the AC input port is connected to a generator.

23

4.4 LCD Settings
Button Operations
UP

User Manual

Return

Enter

Button ESC ENTER UP DOWN

Down
Fuction Exit Confirm, Enter menu Previous step or Slide right Next step or Slide left

Note: Long-pressing the UP and DOWN keys will continuously input the corresponding key signals.

General Operations Through button control, press ENTER on the home screen to access the menu options

Using the UP and DOWN buttons, select the desired function, then press ENTER to enter. Press ESC to return to the previous level. The options include Home for the main page, Data for operational data, Notice for fault and warning information, and Setting for configuration settings.
Note: Click the Down button again, then jump to Notifications, Settings, Home, and complete a loop..
24

Index Description

Index

User Manual

1

Solar

The figure shows the voltage and power of PV1, the voltage and power of PV2, the power generation of PV1 in one day and the total power generation of PV1, the power generation of PV2 in one day and the total power generation of PV2.

2 Battery (1) The first page contains the following information: battery voltage, battery charge and discharge current, battery charge power, battery discharge power, inverter sampling battery voltage, battery status, battery remaining power, battery health, battery charge cut-off voltage, battery discharge cut-off voltage. The highest cell voltage. Lowest cell voltage. Highest cell temperature, lowest cell temperature.
3 Battery (2) The second page contains the following information: the number of charge and discharge times of the battery, the capacity of the battery, the maximum charge current, the maximum discharge current, BMS event 1, BMS event 2, the charge power in a day, the discharge power in a day, the total charge power, the total discharge power.
25

User Manual

4

Grid (1)

The first page contains the following information: grid voltage, grid frequency, split phase L1-N voltage, split phase L2-N voltage, generator voltage, generator frequency, power input from the grid to the inverter, power output from the inverter to the grid, inverter power, rectified power, load power.

5

Grid (2)

The second page contains the following information: The power of the inverter exported to the grid during the day. The total power of the inverter exported to the grid. The power that the grid imports into the inverter during the day. The total power imported from the grid to the inverter. The power output of the inverter during the day. The power of inverter rectification in a day.

6

UPS (1)

The first page contains the following information: LOAD voltage, LOAD frequency. L1-N voltage of LOAD, L2-N voltage of LOAD. The active power of LOAD, the apparent power of LOAD. The L1-N active power of LOAD and the L1-N apparent power of LOAD. The L2-N active power of LOAD and the L2-N apparent power of LOAD.

26

User Manual

7

UPS (2)

The second page shows the output power of LOAD (L1-L2) in a day. LOAD (L1-L2) Indicates the total power output. LOAD (L1-N) Output power in a day. LOAD (L1-N) Indicates the total power output. LOAD (L2-N) output power in a day. LOAD (L2-N) Total power output.

8

Parallel

This page contains information about the role of the inverter in the parallel state (master and slave), the type of parallel connection (single-phase or three-phase), the parallel phase (U, V, or W), the number of parallel machines, and the parallel address.

9

Other

This page contains text information about the current status of the inverter. Inverter error code. Inverter alarm code. Voltage of BUS1. Voltage of BUS2. Positive BUS voltage. Negative voltage of the BUS. The temperature of T1 is the temperature of the I/O board (the highest value). T2 is the temperature of the motherboard (take the highest value).

27

Index Description

Notice

User Manual

1

Fault

Status

Information on this page: When the inverter fails, this page displays the corresponding fault code. If there is NO Fault, no fault is displayed.

2

Alarm Status

Information contained in this page: When the inverter alarm appears, this page will display the corresponding alarm code. If there is NO Alarm, no alarm is displayed.

3

Record

This page contains information that lists the history of failures and alarms. Specific to the time and date of failure or alarm. The fault history is displayed on pages 1 to 4. Pages five through eight show the history of the call.

28

Index Description

Setting

User Manual

Battery brand

Standard Lux

HinaESS Aobo

Pylon

Dyness

Enopte Stealth

MSUN

TeLongMei

GSL1

Merit

Battery brand

BYD

GW

SHINWA Beta

WeCo

Revov

Murata Beebeej

BITek

Naxin

OKSolar Soltaro

The first page contains the following information:

inverter status information (rated or standby). PV input mode

(DC source or PV1 and PV2 independent or PV1 and PV2 parallel). Type

of battery (lithium or lead-acid or no battery). Lithium battery

brands (containing 24 battery brands). Green energy saving

enabled. Battery energy saving is enabled. The insulation impedance is

1

Common enabled.

The second page contains the following information: The Settings of the year, month and date. Enabling the buzzer.
2 Application (1) The first page contains information on LOAD output voltage Settings (240,230,220,208,200). LOAD output frequency setting (50HZ or 60HZ). AC input range (UPS: 170-280 or APL: 90-280). The PV off-network function was enabled. N-PE is enabled. AFCI enabled, AFCI clear, RSD enabled.
29

User Manual

3 Application (2)
The second page contains information: AC priority charging time, you can set three time periods.

4

Application (3)

The third page contains the following information: Mixed mode Settings. PV and AC are loaded together. empower Export to the grid. Percentage of electricity output to the grid. Enable the CT function on the inverter power grid side. The default CT ratio is 1000:1. It can also be set to 2000:1 and 3000:1.

5 Application (4) The fourth page contains information: Type of parallel machine (no parallel machine or single phase parallel machine or three phase parallel machine). Parallel phase (R,S,T) can be set. The battery sharing function was enabled.
30

User Manual

6

Charge (1)

The first page contains information: charging current Settings. CV voltage setting of lead-acid battery. Lead-acid battery floating charge voltage setting.

7

Charge (Numerical

setting operation)

This page contains: Setting values. After pressing Down, exit move to +1, +1 to -1, -1 to +0.1, +0.1 to -0.1, and -0.1 to Enter. Press UP to roll back.

If you press Enter when the cursor moves to +1, 55 becomes 56. If you

press Enter when the cursor moves to -1, 55 becomes 54. If you press

Enter when the cursor moves to -0.1, 55 becomes 54.9. If you press Enter

when the cursor moves to +0.1, 55 becomes 55.1.

8 Charge (2) The second page contains information: AC charging mode enable Settings. AC charging current setting.
31

User Manual

9

Charge

(according

to the time)

The second page contains information: The AC is charged according to the time, and three time periods are provided.

Charge 10 (according

to the

battery

voltage)

The second page contains information:

The AC is charged according to the battery voltage. The starting

charge voltage and cut-off charge voltage can be set.

Charge

11

(according to

the battery

SOC)

The second page contains information: The AC is charged according to the battery SOC. Start charge SOC and stop charge SOC can be set.

32

User Manual

Charge

(according

12

to the

battery

voltage and time)

The second page contains information: The AC is charged according to the battery voltage and time.

Meet one of the three time periods and the battery voltage

between the starting charge voltage and the cut-off charge

voltage. The AC will be charged.

Charge 13 (according

to

time and

SOC)

The second page contains information:

The AC is charged according to time and SOC. Meet one of the

three time periods and the battery SOC between the start charge

SOC and the cut-off charge SOC. The AC will be charged.

14 Charge (3) The third page contains information about the Settings for charging the generator. The generator is charged according to the battery voltage or battery SOC. Battery charging current can be set. The battery voltage can be set to start charging. You can set the battery voltage at the end of charging. Battery SOC can be set to start charging. Battery SOC can be set to end charging. The maximum input power of the generator can be set.
33

User Manual
15 Discharge (1) The first page contains information: battery discharge can be based on voltage or SOC. Discharge current can be set. Battery alarm voltage can be set. Off-grid discharge cutoff voltage can be set. Grid-connected discharge cutoff voltage can be set. The alarm voltage is larger than the off- grid cut-off voltage. The off-grid cut-off voltage range is complementary to the grid-connected cut-off voltage range.
16 Discharge (2) The second page contains the following information: Enable Smart Load. When the actual PV input power is greater than the value, the Smart Load function takes effect. Normally open when connected to the grid. Smart Load takes effect voltage point. Smart Load End voltage point. Smart Load takes effect on the SOC. Smart Load Ends the SOC.
17 Discharge (3) Page 3 contains the following information: Enables the AC coupling function. Sets the start state of charge (SOC) for AC coupling. Defines the cutoff SOC for the AC coupler. Configures the start voltage for the AC coupler. This section provides detailed settings for the AC coupling process, including initiation and cutoff parameters to ensure optimal performance.
34

User Manual

Other
Include information: CT power compensation setting. Set the maximum speed of five fans. Set five fan control slope curves.

18

Basic

Contains information: SN Indicates the serial number of the inverter. FW Indicates the firmware version of the inverter (cEaa indicates the US version, cFaa indicates the European version).

35

5. About LCD Settings check the operation
Enter Up or Down Enter

User Manual

36

User Manual
6. Monitor System for Offgrid inverter
Users can use wifi dongle / WLAN dongle / 4G dongle (Available from 2021 March for some countries) to monitor the energy storage system, The monitor website is: server.luxpowertek.com The APP is also available in the google play and apple APP store (Scan two code bar to download the APP). Please download the introduction of guidance by website: https://www.luxpowertek.com/download/ Document Reference:
1. Wifi Quick Guidance Quick guidance for setting password for wifi module, the paper is also available in the wifi box 2. Monitor system setup for Distributors and Monitor system setup for endusers, Monitor system registration, wifi password setting, and wifi local monitor and setting
3. Lux_Monitor_UI_Introduction Introduction of monitor interface
4. Website Setting Guidance Introduction of website settings for offgrid inverter

Device
Solar Yield
0.6 kWh
Yield Today
164.6 kWh
Total Yield
Feed-in Energy
0 kWh
Today E xp o rt
98.3 kWh
To ta l E xp o rt

9532004127

Battery Discharging

0.4 kWh

ch a r g ed To d a y

25.8 kWh

To ta l ch a r g ed

C ons um pti on
7.6 kWh
To d a y Usa g e
147.3 kWh
To ta l Usa g e

270 W Battery Power

724 W PV Power

Notice 0 W

53.6Vdc 89% Battery Level(SOC)
Standby Backup Power(EPS)

448 W Co n su mp t io n

O ve rvi e w

Data

Event

S e tting

37

User Manual

7. Specifications

Table 1 MPPT Mode Specifications

INVERTER MODEL

SNA-US 12000

Max. PV Array Power

24000W(12000/12000)

Rated PV Input Voltage

320V

Number of Independent MPPT Inputs

2

Number of string per MPPT

2

PV Input Voltage Range

100V~480V

MPPT Voltage Range

120V~385V

Start-up Voltage

100V

Max. PV Input Current per MPPT

35A/35A

Max. PV Short-circuit Current per MPPT

44A/44A

Max. PV Charging Current for Battery

250A

Table 2 Battery Mode Specifications

Rated Output Power Max. Half Wave Load Output Voltage Waveform
Output Voltage Regulation

6000W (L-N),12000W (L-L) 4500W (L-N) Pure sine wave 120Vac/208Vac 120Vac/240Vac

Rated Output Current

54.5A@208V; 50A@240V

Output Frequency Max. Charging/Discharging Current Max. Charging/Discharging Power Recommend Capacity of Battery per Inverter

50Hz/60Hz 250A 12000W >400AH

Peak Efficiency

93%

Overload Protection Surge Capacity Battery Voltage Range

5s@150% load(L-N, L-L) 10s@110%~150% load(L-N, L-L)
2* rated power within 5 seconds
46.4Vdc-60Vdc(Li) 38.4Vdc-60Vdc(Lead_Acid)

38

User Manual

High DC Cut-off Voltage

High DC Recovery Voltage

load < 20%

Low DC Warning Voltage 20% load < 50%

load 50% Low DC Warning Return Voltage

Low DC Cut-off Voltage
Low DC Cut-off Return Voltage
Low DC Warning SOC

load < 20%
20% load < 50%
load 50%
Cut-off Voltage @load<20%45V Cut-off Voltage @load<20%<45V

Low DC Warning Return SOC

Low DC Cut-off SOC

59Vdc (Li) 60Vdc (Lead_Acid) 57.4Vdc (Li) 58Vdc (Lead_Acid) 42.0Vdc (Settable) Warning Voltage @load < 20% -1.2V Warning Voltage @load < 20% -3.6V Low DC Warning Voltage@Different load +2V 42.0Vdc (Settable) Cut-off Voltage @load < 20% -1.2V Cut-off Voltage @load < 20% -3.6V Low DC Cut-off Voltage @load<20%+3V 48V 20% SOC (Settable ) Low DC Warning SOC +10% 15% SOC (Grid on) (settable) 15% SOC (Grid off ) (settable)

Low DC Cut-off Return SOC

Charge Cut-off Voltage

No Load Power Consumption

Lead_Acid Battery Charging Algorithm

Bulk Charging Voltage

Flooded Battery AGM/Gel Battery

Floating Charging Voltage

Low DC Cut-off SOC +10% 58.4Vdc <60W 3-Step 58.4Vdc 56.4Vdc 54Vdc

Battery Voltage, per cell
2.43Vdc (2.35Vdc) 2.25Vdc

Charging Current Voltage
100%

Charging Curve

T0

T1

T1=10*T0, minimun 10mina, maxmum 8hour

Bulk (Constant Current)

Absorption (Constant Voltage)

Current
Maintenance (Floating)

50% Time

39

User Manual

Nominal Input Voltage AC Start-up Voltage

Table 3 Line Mode Specifications
110Vac/120Vac 220Vac/240Vac
45Vac (L-N), 90Vac (L-L)

Acceptable Input Voltage Range
High Loss Voltage Max. AC Input Current Nominal Input Frequency Rated AC Current of Bypass Relays
Output Short Circuit Protection

65Vac (L-N)~140Vac (L-N) 130Vac (L-L)~280Vac (L-L)
140Vac (L-N)/ 280Vac (L-L) 100A 50Hz/60Hz (Auto detection) 200A
Software Protect when GridOff Discharge Circuit Breaker Protect when GridOn Bypass

Transfer Time

<10ms @ Single <20ms @ Parallel

Output Power Derating; When AC Input Voltage Drops to 170V, The Output Power Will be Derated
Smart Load Outputs the load and current

Max inv current: 60A Max inv power: 12kW

Table 4 Generator Mode Specifications

Rated GEN Voltage

120Vac/208Vac 120Vac/240Vac

Rated GEN Frequency Rated GEN Input Current Rated GEN Input Power Rated GEN Current of Bypass Relays

50Hz/60Hz 62.5A @240V 15000W 90A

40

User Manual

Table 5 Protection/General Specifications

INVERTER MODEL Over Current/Voltage Protection Grid Monitoring

SNA-US 12000 YES YES

AC Surge Protection Type III

YES

Grid Switch (Current/Voltage) Load Switch (Current/Voltage) Smart Load Switch (Current/Voltage)

No 100A/480VAC 63A/480VAC

Battery Switch (Current/Voltage)

300A/80VDC

GEN Switch (Current/Voltage)

No

Safety Certification

UL STD. 1741 CSA STD. C22.2 No.107.1

Ingress Protection Rating Display&Communication Interface Warranty Cooling Method Topology Noise Emission (typical) Operating Temperature Range Storage temperature Humidity Altitude Dimension (DWH) Net Weight

IP 20 LCD+RGB, RS485/Wi-Fi/CAN 2 Years FAN Transformer-less <50dB 0°Cto 45°C (32°F~113°F) (full load) -15°C~ 60°C (5°F~140°F) 5% to 95% Relative Humidity (Non-condensing) <2000m(6561ft) 830530150mm (25.5917.725.9inch) 45Kg

41

User Manual

8. Trouble Shooting & Error List
The failures mainly divided into 5 categories, for each category, the behavior is different:

Code E000 E001 E003
E008
E009

Description Internal communication fault1 Model fault CT Fail CAN communication error in Parallel System
No master in parallel system

Trouble shooting Restart inverter, if the error still exist, contact us (DSP&M3)
Restart inverter, if the error still exist, contact us
Restart inverter, if the error still exist, contact us
Check CAN cable connection is connected to the right COM port
Check parallel setting for master/Slave part, there should be one master in the system

E012 E013
E015 E018 E019 E020 E021 E022 E024 E025
E028 E029

Off-gird, short-circuit of the Load or Smart Load. UPS reserve current BUS short circuit Phase Error in three phase parallel system
Internal communication fault3 Bus voltage high AC connection fault
PV voltage high Hardware Over current PV overcurrent
Temperature over range
Sync signal lost in parallel system Sync triger signal lost in parallel system

Check if the load is short circuit, try to turn off the load and restart inverter
Restart inverter, if the error still exist, contact us Restart inverter, if the error still exist, contact us
Check if the AC connection is right for three phase system, there should one at least one inverter in each phase
Restart inverter, if the error still exist, contact us (DSP&M3)
Check if PV input voltage is higher than 495V
Check if LOAD and AC connection is in wrong terminal Check PV input connection and if PV input voltage is higher than 480V
Restart inverter, if the error still exist, contact us
Check PV connection
The internal temperature of inverter is too high, turn off the inverter for 10minutes, restart the inverter, if the error still exist, contact us
Check CAN cable connection is connected to the right COM port
Check CAN cable connection is connected to the right COM port

42

User Manual

W000

Communication failure with battery

W001

AFCI Com failure

W002

AFCI High

W003

Communication failure with meter

W004
W006 W008 W009 W013
W015 W017 W018 W019 W020 W022 W025 W026
W027 W028 W029
W031

Battery failure
RSD Active Software mismatch Fan Stuck Over temperature
Bat Reverse AC Voltage out of range AC Frequency out of range AC inconsistent in parallel system PV Isolation low DC injection high Battery voltage high Battery voltage low
Battery open Over load The load output voltage is high
Load DCV high

Check if you have choose the right battery brand and communication cable is right, if the warning still exist, contact us
Restart inverter, if the error persists, contact your supplier.
Check each PV string for correct open circuit voltage and short circuit current. If the PV strings are in good condition, please clear the fault on inverter LCD.
Check communication cable, if the warning still exist, contact us
Inverter get battery fault info from battery BMS, restart battery, if the warning still exist, contact us or battery manufacture
Check if the RSD switch is pressed.
Please contact Luxpower for firmware update Check if the fan is OK
The temperature is a little bit high inside inverter
Check the battery connection with inverter is right, if the warning still exist, contact us
Check AC voltage is in range
Check AC frequency is in range Reconnect the AC input or Restart inverter, if the errorstill exist, contact us
Restart inverter, if the error still exist, contact us
Restart inverter, if the error still exist, contact us Check if battery voltage is in normal range
Check if battery voltage is in normal range, need to charge the battery if battery voltage is low
Check if there is output from the battery and battery connection with inverter is OK Check if load is too high
Restart inverter, if the error still exist, contact us
Restart inverter, if the error still exist, contact us

43

YOUR RELIABLE ENERGY SOLUTIONS PARTNER

luxpowertek
Lux Power Technology Co., Ltd Headquarter: +86 755 8520 9056 www.luxpowertek.com Contact us: info@luxpowerttek.com

092.20031AA

References

• British American Tobacco - Home
• ログイン | m3.com
• server.luxpowertek.com
• Solar Inverters Manufacturer & Factory | LuxpowerTek

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