Lux Power Technology LXP-LB-US 12K User Manual
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Lux Power Technology LXP-LB-US 12K User Manual

Hybrid inverter
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Hybrid inverter
User Manual
LXP-LB-US 12K
Version: UM-LXPUS02001E
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Summary of Contents for Lux Power Technology LXP-LB-US 12K

  • Page 1 Hybrid inverter User Manual LXP-LB-US 12K Normal Warning Fault Return Down Enter Version: UM-LXPUS02001E...
  • Page 2 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.

  • Page 3: Table Of Contents

    User Manual Table Of Contents 1. Safety 1.1 Safety Instruction 2. Brief Introduction 2.1 System Solution 3. Installation 3.1 Packaging List & Storing 3.2 Location Selection and Installation 3.3 Connection Overview 3.4 PV Connection 3.5 Battery Connection 3.6 Grid&EPS load Connection 3.7 Working with Generator 3.8 AC Coupling Installation Connection 3.9 Parallel System Connection...

  • Page 4: Revision History

    User Manual 6.3 Test parameter tolerances 7. Annex2: Lithium Brand Reference Revision History Version Date Description UM-LXPUS02001E 2024.08.06 First official release.

  • Page 5: Safety

    User Manual 1. Safety 1.1 Safety Instruction General Safety Instructions International safety regulations have been strictly observed in the design and testing of the inverter Prior to any work, carefully read all safety instructions and observe them at all times when working on or with the inverter.
  • Page 6 User Manual WARNING Avoid Misoperation and Inappropriate Usage • All the work of this product (system design, installation, operation, setting, configuration and maintenance must be carried out by qualified personnel as required. • All connections must be in accordance with local and national regulations and standards. •...

  • Page 7: Brief Introduction

    User Manual 2. Brief Introduction 2.1 System Solution This product and its associated system are suitable for the following system applications (system diagram): A. Solar and battery storage system B. AC Coupling with existed solar system Normal Warning Fault Return Down Enter Normal...

  • Page 8: Installation

    User Manual 3. Installation 3.1 Packaging List & Storing Packaging When the packaging is unpacked, the inner components should match those listed in the list below. Hybrid inverter User Manual LXP-LB-US 12K Normal Warning Fault Return Down Enter Expansion Screw Version: UM-LXPUS02001E 1〞...
  • Page 9 User Manual 15.8in 400mm 15.8in 15.8in Normal Normal Normal Warning Warning Warning Fault Fault Fault Return Down Enter Return Down Enter Return Down Enter 400mm 400mm 15.8in 400mm Normal Normal Normal Normal Normal Normal Warning Warning Warning Warning Warning Warning Fault Fault Fault...
  • Page 10 User Manual 3.2.2 Installing the inverter The inverter is wall-mounted type and, should be installed on a vertical, solid mounting surface, such as wood studs, brick or concrete wall. Two or more persons may be needed to install the inverter due to its weight.

  • Page 11: Connection Overview

    User Manual Step 3. Hang the inverter onto the wall-mounting bracket and lock the inverter on the wall using 2 self-tapping screws on the top of the inverter, lock the safety screws on the left and right sides. Lock the safety screw For installation on wood studs Fasten the mounting bracket on the studs with 4 wood screws, then hang the inverter onto the bracket and lock the inverter on the wall with 2 self-tapping screws.
  • Page 12 User Manual Breakers selection recommendation for both DC and AC Inverter model MPPT1 string 1: 600V/20A MPPT1 string 2: 600V/20A PV Breakers(2P×4) MPPT2 : 600V/20A MPPT3 : 600V/20A 200A/240Vac when ups is used for whole home backup Main Breaker(2P) 100A/240Vac when ups is used for parital load backup Generator Breaker 100A/240Vac Integrated Battery Breaker...

  • Page 13: Pv Connection

    User Manual The inverter has integrated Load breaker and BAT breaker, and the Load breaker is 200A, the BAT breaker is 2x200A. i. Parallel CAN matching resistance a). Battery communication port (CAN&RS485) please check Chapter a. Battery Communication Interface 3.5.2 for Pin definition e.

  • Page 14: Battery Connection

    User Manual Steps for PV connection Steps for PV connection a. Strip off 1/4-5/16inch(6~8mm) insulation on the PV a. Strip off 1/4-5/16inch(6~8mm) insulation on the PV string’s positive and negative conductors. string’s positive and negative conductors. b. Use wire ferrules for PV string conductors if they are b.
  • Page 15 User Manual WARNING • Polarity reverse will damage the inverter! • Put the built-in battery breaker in the off position before connecting or disconnecting batteries. 3.5.2 Battery communication cable connection Correct battery communication cable must be used to connect the battery to the inverter when users choose lithium-ion battery type.

  • Page 16: Grid&Eps Load Connection

    User Manual NOTICE For Li-ion battery • Please make sure the lithium-ion battery to be used is compatible with inverters. Please contact your distributor for an updated battery compatible list. • If you are using multiple battery modules with the inverter, the inverter communication cable must be connected to the primary battery.
  • Page 17 User Manual 3.6.2 Grid and EPS load connection for split-phase service Connection diagram for 120/240V is as below. The connection diagram for 120/208V split phase service is roughly the same except that generator is not supported. The inverter can be connected to the load side of the service disconnecting means if the busbar rating in the main panel can meet the NEC705.

  • Page 18: Ac Cable Connection

    User Manual 3.6.3 AC cable connection Cable Requirement: Current Cross-section Cable Diameter Minimum Voltage Torque for cable connection 100A 3-2AWG(25-35mm2) 6-7mm 600V 5(N·m) 200A 1/0-2/0AWG(55-70mm2) 8-9mm 600V 9-18(N·m) a. Strip off 5/16-3/8inch (8~10mm) insulation sleeve on the cables. b. Use wire ferrules if the cables are made of fine stranded wires. c.
  • Page 19 User Manual CT Port Pin definition The CT interface for 2 CTs connection is an Rj45 port, we have made an RJ45 plug on those 2 CTs in advance, so you can connect it to the port directly. Description Reserved CT2N CT2P CT1N...

  • Page 20: Meter Connection

    User Manual GRID Extend CT clamp cable The CT wires can be extended with a common ethernet cable if the length is not enough. An RJ45 adapter is needed for the extension. The CT wires can be extended up to 300ft(around 100m). Meter Connection If you need to use a meter for import/export detection instead of CTs, you need to connect it to the Meter 485A and 485B terminals on the inverter.

  • Page 21: Working With Generator

    User Manual 3.7 Working with Generator 3.7.1 Generator system connection This hybrid inverter can work with generator. There are Gen ports on the inverter for generator connection. Generator requirements: the generator should be neutral bonded type, with 240V/120V output at same time, generator capacity should be larger than 5kW.
  • Page 22 User Manual When the generator is started, all the loads connected to EPS Load will be supplied by the generator. Meanwhile the battery will be charged. The pass-through relay on the generator port is 90A. When the generator is on, please ensure the total load and charge current will not exceed 90A.

  • Page 23: Ac Coupling Installation Connection

    User Manual 3.8 AC Coupling Installation Connection The inverter supports AC coupling connection with the existing grid-interactive solar system. The existing solar system is connected to the inverter’s GEN port. Connection for AC coupled solar system Utility Meter LOAD GRID Kw.

  • Page 24: Parallel System Connection

    User Manual 3.9 Parallel System Connection 3.9.1 Connection for paralleling system The hybrid inverter supports parallel connection to expand power and energy capacity to suit different using scenarios. Up to 10 units can be paralleled to reach a capacity of 120kW. Wiring diagram is as below, the manual bypass switch connect loads to EPS panel for default.
  • Page 25 User Manual L2/Negative L3/Positive b. 12KW×3 Parallel system installation connection (3@208V/120V) b. 10KW(8KW)×3 Parallel system installation connection (3@208V/120V) Neutral Ground Utility Combiner Box Utility Meter Primary inverter1 L1(120V) Kw. h LOAD GRID 7 9 8 6 6 L2 L3 480r/Kw. h 10A L2(120V) L3(120V) Utility Phase Sequence...
  • Page 26 User Manual L2/Negative c. 12KW×2 Parallel system installation connection (2@208V/120V) L3/Positive Neutral Utility Meter Ground Kw. h Primary inverter1 7 9 8 6 6 L1(120V) LOAD GRID TO PCS 480r/Kw. h 10A TO Grid L2(120V) L3(120V) Utility Phase Sequence CT 1 CT 2 CT 1 Utility Combiner Box...
  • Page 27 User Manual Utility Meter d. 12KW×2 Parallel system installation connection (2@240V/120V) Kw. h TO PCS 7 9 8 6 6 Primary inverter1 480r/Kw. h 10A TO Grid LOAD GRID CT 2 Utility Combiner Box CT 1 Manual Bypass Switch Parallel matching resistance Subordinatee inverter2 LOAD GRID...
  • Page 28 User Manual Please put the CAN communication PIN to on status for the first and the end inverter. If the parallel cable is not enough or long enough, please make a straight pin to pin cable. Setting for paralleling function in monitor system 1.

  • Page 29: Monitor System Setup

    User Manual 3.9.2 Parallel information display The information in the red box shows the parallel information. Pnum: 01~10, display number of parallel units Role: P or S, P means Primary and S Normal Warning Fault Return Down Enter means Subordinate Phaes: 1~3, 1: R Phase, 2: S Phase, 3: T Phase NOTICE...
  • Page 30 User Manual 3.10.2 Setup the monitor system 1. Sign up an account on the mobile phone 2. The station and wifi dongle will be created APP or Website auto when you register, if you want have more stations need to be created, you can The “customer code”...
  • Page 31 User Manual Please download the following guides for setting up WiFi dongle and monitoring account at Document Reference: 1. Wifi Quick Guidance Quick guidance for setting connection of WiFi module to home WiFi, you can also find a printed version in the packaging of the WiFi module. 2.

  • Page 32: Operation Guide

    User Manual 4. Operation Guide 4.1 Operation Mode and Function The inverter has different working modes and functions to meet customers’ various demands. The working modes and functions are as below. 4.1.1 Self-usage Mode(Default) In this mode, the priority order of load supply sources is Solar>Battery> Grid. The priority order of solar power usage is Load>...

  • Page 33: Charge First Mode

    User Manual 4.1.2 Charge First Mode The priority order of solar power usage will be Battery >Load >Grid. During the Charge Priority time period, load is first supplied with grid power. If there is excess solar power after battery charging, the excess solar power will take load together with grid power.
  • Page 34 User Manual 4.1.3 AC Charge Mode Users can charge batteries with grid power when electricity prices are cheap, and discharge battery power to supply load or export to the grid when electricity prices are high. • Application Scenarios When users have a Time of Use (TOU) rate plan. •...

  • Page 35: Rapid Shutdown

    User Manual 4.2 Rapid shutdown The inverter includes a rapid shutdown system that complies with 2017 and 2020 NEC 690.12 requirements. RSD Transmitter Emergency button： To initiate rapid shutdoen RSD Stop WIFI RSD Receiver In case of emergency, press the rapid shutdown button that cut off the RSD power supply, thus stopping the inverter AC output, and the PV conductors voltage will be reduced to less than 30V within 30 seconds.
  • Page 36 User Manual • Fault/Alarm Information Touching the bell icon at the bottom of the screen,you’ll see all the current and historical fault&warning information on this page.

  • Page 37: Setting Parameters

    User Manual 4.3.2 Setting Parameters Clicking on the gear icon at the bottom of the screen, you’ll get into the parameter setting page of the inverter. a. Basic settings • Restart inverter: Restart the system, please note Standby: the power maybe interrupted when restarted. Restart inverter Reset •...
  • Page 38 User Manual c. Discharge setting • Discharge current limit(A): The Max. discharge current from battery. • Discharge start power(W): The Min. value can be set to 50. When the inverter detects the import power is higher than this value, battery start discharging, otherwise battery will keep standby.

  • Page 39: Start-Up And Shut Down The Inverter

    User Manual • Role: The Role setting of the parallel system. lt is set to Expoet Grid Max Export to Grid(kW) 1 phase primary by default. In a parallel system, only Zero Export one inverter is allowed to be set as Primary, and the Parallel battery others are all Subordinate.

  • Page 40: Troubleshooting&Maintenance

    User Manual 5. Troubleshooting&Maintenance 5.1 Regular Maintenance • Inverter Maintenance a. Check the inverter every 6 months or 1 year to verify if there are damages on cables, accessories, terminals and the inverter itself. b. Check the inverter every 6 months to verify if the operating parameter is normal and there is no abnormal heating or noise from the inverter.
  • Page 41 User Manual Inverter detected power flowing into EPS power reversed EPS port Bus short circuit DC Bus is short circuited Restart inverter, if the error still exists, contact your Relay fault Relay abnormal supplier. DSP fails to receive data from M8 M8 Tx failure microprocessor DSP fails to receive data from M3...
  • Page 42 User Manual Please confirm that the rated power of all inverters are Rated power of parallel inverters are Para rating Diff inconsistent the same, or you can contact service to confirm. Please confirm that the wiring of the parallel system is correct first.
  • Page 43 User Manual Auto test failure Auto test failed Only applied to Italy model. LCD fails to communicate with M3 LCD com failure microprocessor Restart inverter. If fault still exists, contact your Firmware version mismatch between Fwm mismatch supplier. the microprocessors Fan stuck Cooling fan(s) are stuck 1.

  • Page 44: Fan Replacement

    User Manual 5.4 Fan replacement Please check and clean the fans regularly. The recommended period is 6 months. Please replace the fan following up the below diagram if there is problem with the fans. Turn off the system and wait for more than 5 minutes before disassembling the machine. a.
  • Page 45 User Manual c. Pull out the fan bracket completely, and use a soft brush to clean the fan or replace a damaged fan. d. Remove the fan and replace it. e. After the fan is installed, follow the steps just now to push back and assemble it back.

  • Page 46: Annex1: Technical Data

    User Manual 6. Annex1: Technical Data 6.1 Remote control inverter on/off and modify parameter settings The inverter have the following functions: Remote receive message from the utility or its agent to start or shutdown inverter; Remote receive message from the utility or its agent to complete parameter setting, enable or disable the functions in accordance to Rule21.

  • Page 47: Parameter Setting According To Rule21

    User Manual 3. In this page, can activation the Rule21 function. Setting the value in the corresponding blank. Before setting, you can read the default value first, and then set the parameter of the function that needs to be modified according to the parameter setting range provided in the next chapter 8.2. 6.2 Parameter setting according to Rule21 6.2.1 Enter service setting Minimum...
  • Page 48 User Manual 6.2.2 High Volatge and Low Voltage Trip Required settings Minimum Maximum Default Parameter name in accordance with Adjustable Range Adjustable Range Value UL 1741 SA Grid Volt Limit2 High(V) 120%Vnom Fixed at 120%Vnom Fixed at 120%Vnom High voltage 2 HV2 Grid Volt Limit2 High Time 160ms Fixed at 160ms...
  • Page 49 User Manual 6.2.5 Voltage/Var Mode(Q(V)) The reactive power is controlled as a function of the grid voltage. The parameterize-action is carried out by means of a reactive power/voltage characteristic curve. The absolute value of Q1 and Q4 are the same. Avg ▏...
  • Page 50 User Manual 6.2.6 Active Power-Reactive Power Mode(Q(P)) Reactive Power Injection/Over Excited (P’₃,Q’₃) (P’₁,Q’₁) (P₁,Q₁) (P₂,Q₂) P₃ Active Power Active Power (0,0) (0,0) (Absorption) (Generator) P’₃ (P’₂,Q’₂) (P₃,Q₃) Absorption/ Under Excited Minimum Maximum Parameter name Default Value Adjustable Range Adjustable Range Active Power-Reactive Disable Power Mode...
  • Page 51 User Manual 6.2.8 Frequency-Watt(FW) 100% of Available Power Max ▏ slope ▏ start_min Grid Frequency Minimum Maximum Parameter name Default Value Adjustable Range Adjustable Range Frequency-Active Disable Power Mode Overfrequency 0.036Hz 0.017Hz Droop dbOF Underfrequency 0.036Hz 0.017Hz Droop dbUF Overfrequency 0.05 0.02 0.07(for HECO)
  • Page 52 User Manual When the grid voltage exceeds V1, the output active power varies with the grid voltage. Minimum Maximum Parameter name Default Value Adjustable Range Adjustable Range Voltage-Active Disable Power Mode 106%Vnom 105%Vnom 109%Vnom Ppre-disturbance (for active power output at the time voltage exceeds V1 in p.
  • Page 53 User Manual 7. Annex2: Lithium Brand Reference Lithium Brand The Battery Brand Displayed on LCD Lithium_0 Standard Protocol/Zetara/EG4 Lithium_1 HINAESS Battery Lithium_2 Pylontech/UZ Energy Rsvd Rsvd Rsvd Rsvd Lithium_5 GSL1 Battery Lithium_6 Lux Protocol Rsvd Rsvd Rsvd Rsvd Rsvd Rsvd Rsvd Rsvd Rsvd...

  • Page 54: Battery Data

    User Manual PV Input data Max. usable input current(A) 25/15/15 Max. short circuit input current(A) 31/19/19 Start input voltage(V) Start up voltage(V) Full power MPPT voltage range(V) 230-500 DC nominal voltage(V) MPPT tracker DC voltage range(V) 100-600 MPP operating voltage range(V) 120-500 Max.
  • Page 55 User Manual Note...
  • Page 56 Lux Power Technology Co., Ltd Headquarter: +86 755 8520 9056 www.luxpowertek.com Contact us: info@luxpowertek.com 092.20028AB...

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