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LGxxxA1C-B3 / LGENBOX-01 AC Module System Installation Instructions * A minimum slope of 5 in/ft. for roof installations is requir ed to meet fir e cl ass ratings.
2 T able of Contents 1 Safety 3 1-1 Safety Symbols 3 1-2 Important Safety Instructions 3 1-3 FCC Guidelines 4 1-3 Circuit Symbols 4 2 Introduction 5 3 AC Module 6 3-1 Before Installation 6 3-2 Inspect.
3 1 Safety Note and comply with the safety guidelines of this manual while handling AC modules. Failure to comply may result in severe damage to the equipment and/or fatal injuries. Safety symbols are used to minimize loss and injury during handling and operation of the equipment specified in this manual.
4 The following circuit symbols are used to describe the AC module circuit in this manual. 1-4 Circuit Symbols / PV module: Equipment that receives solar energy and generates DC power . / Inverter: Equipment that converts DC power into AC power . / Utility-Interactive inverter: Inverter connected in parallel with the grid to supply power .
5 2 Introduction LG AC module consists of PV(Photovoltaic) module and “Utility-Interactive” micro inverter . Without any additional equipment, it converts the solar energy to AC power used in electric appliances and supplies to the utility . • The AC module system, unlike a central inverter system, operates with module MPPT .
6 3 AC Module • LG AC module is “Utility-Interactive”, which requires approval from the corresponding authority prior to system connection. Contact the applicable local government agencies and/or utility company .
7 3-4 Measuring AC V oltage of the Utility Measure the AC voltage of the utility at the distribution panel using a multi-meter . Refer to the table below to determine the number of modules per array . AC V oltage Single phase 240V (per 1-array) Three phase 208V (per 3-array) * For details, refer to Chapter 3-10.
8 3-5 Wiring Diagram of AC Module System Below is a sample diagram of the AC module system. Install in the following order . For details, please r efer to each chapter . Chapter 3-6. Installing the AC Junction Box and PV Rack Install the AC junction box and PV rack at the installation site.
9 3-6 Installing the AC Junction Box and PV Rack 3-7 Mounting the AC module Before installing the AC junction box and PV rack, be aware of the following requirements: Before mounting AC module in the .
10 Fix AC module to the PV rack in the following order: Step1. Peel adhesive label attached on the side of PV frame of AC modules and stick on a piece of paper mirroring the array to map for monitoring. Step 2. Place AC modules on the PV rack with a minimum gap of 0.
11 Use four mounting holes on two opposite sides. Minimum distance between module edge to PV rack is 10.236 inch (260mm). Use four clamps on the long frame. 1 2 1 2 1 2 1 2 Use four clamps on the short frame and two clamps at the center of long frame.
12 3-8 Connecting AC Modules (T runk Cable) Before connecting AC modules in each array , be aware of the following precautions: - Insert trunk female connector into trunk male connector in horizontal direction. If you insert at wrong angle, the connector can be damaged.
13 T o prevent dust from collecting, connect each AC module one by one in the following order: Step 1. T ake the female connector out from the cable holder on the PV frame. (Do not take the unused connector out of the last AC module to prevent sagging.
14 Step 4. T o connect AC modules in different rows, use the extension cable. (Refer to the next page under Cable Usages According to AC Junction Box Locations ) Step 5. Remove the dust cover of the female connector of the last AC module and seal with end cap to ensure waterproofing and dust prevention.
15 Cable Usages Ac cor ding to AC Junction Box Locations If first AC module connected to AC junction box is on the top left side * First AC module * Last AC module Male transition cable Male + Male ex.
16 3-9 Grounding Check your information below before grounding. • Grounding is largely classified into equipment grounding and neutral grounding. The purpose of the equipment grounding is to prevent electric shock from contact with metal parts. Equipment grounding allows the abnormal current to flow from the equipment to the earth.
17 Samples for Gr ounding There is two of samples for grounding below . Using a grounding wir e Using listed EGC • Determine the size of an external ground wire according to Article 690.46, NEC2014. (Equipment grounding conductors smaller than 6 A WG shall be protected from physical damage.
18 Before connecting general AC cable from the AC junction box to distribution panel, adhere to the following items: 3-10 Connecting AC Module Array to Distribution Panel (General AC Cable, T ransition Cable) – 240V AC, 208V AC • T o prevent the danger of electric shock, check again if the circuit breaker is surely turned off.
19 Step 1. Connect the equipment grounding conductor from the AC junction box to the terminal for grounding in the distribution panel. Step 2. 1 Connect hot conductors and neutral conductor in a general AC cable from the AC junction box to the designated terminal in the distribution panel.
20 Step 1. Connect the equipment grounding conductor from the AC junction box to the terminal for grounding in the distribution panel. Step 2. 1 Connect hot conductors and neutral conductor in a general AC cable from the AC junction box to the designated terminal in the distribution panel.
21 Step 1. Connect the equipment grounding conductor from arrays of the AC modules system to the terminal for grounding in the distribution panel. Step 2. 1 Connect the hot conductors and neutral conductor in a general AC cable from the AC junction box to the designated terminal in the distribution panel.
22 3-1 1 Operation 3-12 Maintenance • W ater , ethanol or a conventional glass cleanser with a micro-fiber cloth can be used for regular washing or rinsing of the front glass to remove dust, dirt or other deposits.
23 After installation of AC modules is completed, next step is to install the communication gateway for monitoring. Before installing the gateway , adhere to the following notices: • For reliable communication, it is recommended that the gateway is installed near the distribution panel.
24 1 Connect the AC adapter from Power (12V/1A) Port of the gateway to a dedicated 120V AC outlet. 2 Connect the PLC cable from PLC IN Port of the gateway to a dedicated a 120V AC outlet. 3 Connect the LAN cable from LAN Port of the gateway to a spare port on the broadband router .
25 • For reliable communication, it is not recommended to access through satellite Internet or 3G mobile Internet. 4-3 Configuring the Installation App Press the title bar for 3-5 seconds to enter installer mode.
26 1 After connecting the AC module system at the grid, press MAC Address List . Within 15 minutes, check that all installed AC modules are displayed. After 15 minutes, the AC modules may enter sleep mode. 2 If all are displayed, press the Registration button.
27 Note 2. Changing the EnerBox: If the EnerBox is not working correctly , follow steps below to troubleshoot. 1 After connecting a new EnerBox, enter the serial number of the failed EnerBox on the blank and press EnerBox Group change button. 2 Compare MAC addresses listed in app and web server .
28 1 2 3 Factory setting Step 5. Setting the grid configuration 1 Enter into Grid Configuration and set the grid configuration to suit your environment. If the grid configuration is wrong, AC modules may not operate correctly . 2 Press the Set button.
29 4-4 Website For more information on monitoring, please refer to AC module web server manual at http://enervu.lg-solar .com/support/downloads. T o preventing set up error , it is recommended to set in the following order . Default Mode Hawaii Mode 1) Frequency 59.
30 5 Accessories Item Diagram T ransition Cable Male L TC10-M3 (1.0m) L TC10-F3 (1.0m) LEC16-MM3 LEC16-FF3 LECAP-M3 LEC32-FM3 LECAP-F3 LAC-UNLOCK L TC15-M3 (1.5m) L TC15-F3 (1.5m) Male Male + Male Female + Female Female + Male Female Female - Used to connect the first module in the array to the AC junction box.
31 6 Product Specifications 6-1 AC Module DC Input Parameter Section V alue Power Max. 295 W 300 W 305 W T olerance 3 % 3 % 3 % V oltage Open Circuit 39.7 V 39.8 V 40.0 V Max Power Point 31.8 V 32.0 V 32.1 V Current Short Circuit 9.85 A 9.98 A 10.10 A Max Power Point 9.
32 Mechanical Data Micro Inverter Model (Utility Interactive) LM305UE-G1 Enclosure Environmental Rating T ype 6 Operating Ambient T emperature -40 ~ 65 °C (-40 ~ 149 ℉) Operating T emperature(Internal) -40 ~ 90 °C (-40 ~ 194 ℉) Storage T emperature -40 ~ 90 °C (-40 ~ 194 ℉) Weight 18.
33 Internal Communication with AC module T ype Broadband Power Line Communication (IEEE 1901) Sample Rate 15 minutes Bandwidth 2 MHz ~ 28 MHz T ransmission Rate 10Mbps Max Node 50 External Communication Wired Communication 10/100 auto-sensing, auto-negotiating, 802.
34 6-4 Dedicated Cables T runk Cable T ype TC-ER sunlight resistant Max. V oltage 600V Max. Current 20A Size 12A WG Connector Max. V oltage 300V Max. Current 20A Drop Cable T ype TC-ER sunlight resistant Max. V oltage 600V Max. Current 5A Size 18A WG Connector Max.
35 7 W arranty 8 T ransporting and Storage • Do not loosen the banding, when module is transported by truck, ship and etc. Loose banding may cause damage, like breakage of glass. • Maximum stacking is two pallets. Excessive stacking can stress the AC modules and cause product damage.
Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ.
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