Residential Energy Storage Unit 6.
This manual describes how to safely install the RESU® 6.4 EX battery pack from LG Chem. Read this manual thoroughly before you attempt to install the product, and follow the instructions carefully throughout the installation process. If you are uncertain about any of the requirements, recommendations, or safety procedures described in this manual, contact LG Chem immediately for advice and clarification. NOTE The information included in this document is accurate at the time of publication.
Contents 1 Introduction 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Package Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 5 Main battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . Expansion battery pack . . . . . . . . . . . . . . . . . . . . . . . . LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6 7 Main battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . Expansion battery pack . . . .
Contents 5 6 4.1 Main Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2 Expansion Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . 33 Emergency Situations 34 5.1 5.2 Leaking Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 34 5.3 5.4 Wet Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Damaged Batteries . . . . . . . . . . . . . . . . . . . . .
1 Introduction 1.1 Features The RESU® 6.4 EX battery pack has the following features: Photovoltaic system: This battery pack is designed for photovoltaic system compatibility. Battery management system (BMS): The battery pack’s built-in BMS monitors its operation and prevents the battery from operating outside design limitations. See Troubleshooting on page 32. Expandability: The battery capacity can be increased by adding expansion battery packs. Up to two expansion battery packs can be added.
Introduction NOTE A tag is attached to the gender changer side of the provided communication cable adapter. The tag is labeled as TYPE-S or TYPE-N. TYPE-S adapters are used with most inverters, including SMA inverters, whereas TYPE-N adapters are supposed to be used only with Nedap inverters. If the wrong cable adapter is identified, contact LG Chem or your distributor.
Introduction 1.3 LED Indicators Main battery pack RESU R 6.4 EX Status Charge / Discharge Stat us Cha rge / Disc harg e RES UR 6.4 The LED indicators on the front of the main battery pack show its operational state as follows: Initializing : While the main pack is initializing itself, the Status indicator is lit orange. Normal operation : When the main pack is in normal operation, the Sta- tus indicator is lit green.
Introduction The LED indicators on the front of the expansion battery pack show its operational state as follows: Initializing : While the expansion pack is initializing itself, the Status in- dicator is lit red. Normal operation : When the expansion pack is in normal operation, the Status indicator is lit green. Standby : When the expansion pack is in the standby state, the Status indicator flashes green. See Starting the Battery Pack on page 31.
Introduction Stat us Ch arge / Di scha rge RE SU R 6.4 664 664 406 230 165 165 Performance Nominal voltage 51.8 V Operating voltage 45.2 V to 58.1 V Nominal capacity with no expansion pack 126 A·h Nominal capacity with 1 expansion pack 189 A·h Nominal capacity with 2 expansion packs 252 A·h Nominal energy with no expansion pack 6.4 kW·h Nominal energy with 1 expansion pack 9.6 kW·h Nominal energy with 2 expansion packs 12.
Introduction Power cable requirements Conductor cross-sectional area1) 33 mm2 to 50 mm2 Cable outer diameter 12 mm to 18 mm Cable lug hole size M8 Cable lug width 21 mm Maximum cable length 5 m per cable 1) The external resistance of the power cable between the battery pack and the inverter must be below 10 mΩ. If these requirements cannot be met, contact LG Chem or your distributor.
2 Safety 2.1 General Precautions for the Battery Pack WARNING Failure to observe the precautions described in this section can cause serious injury to persons or damage to property. Observe the following precautions: • Risks of explosion – Do not subject the battery pack to strong impacts. – Do not crush or puncture the battery pack. – Do not dispose of the battery pack in a fire. • Risks of fire – Do not expose the battery pack to temperatures in excess of 50°C.
Safety 2.2 Tools The following tools are required to install the battery pack: Torque screwdriver Phillips-screwdriver bit Hex-key bit Phillips-head screwdriver Wire cutter Voltmeter Tape measure Use properly insulated tools to prevent accidental electric shock or short circuits. It is highly recommended to use adjustable tools and measuring instruments that are certified for precision and accuracy. 2.
Safety 2.4 Warning Labels Main battery pack The nameplate is attached to the right side of the main battery pack, and warning labels are attached to the top and left side. Sta tus Cha rge / Dis cha rge RE SU R 6.4 *$1 < 1 4>& Sta tus Cha rge / Dis cha rge RE SU R 6.
Safety Expansion battery pack @ RESU 6.
3 Installation 3.1 Installation Location The RESU 6.4 EX battery pack must be installed indoors. Make sure that the installation location meets the following conditions: • The area is completely waterproof. • The floor is flat and level. • There are no flammable or explosive materials. • The ambient temperature is within the range from 0°C to 40°C. • The temperature and humidity is maintained at a constant level. • There is minimal dust and dirt in the area.
Installation 3.2 Installing the Main Battery Pack Securing the battery pack to a wall Secure the battery pack to a wall to prevent the battery pack from moving. The provided mounting brackets cannot support the full weight of the battery pack. The battery pack must be supported by the floor or an appropriate platform. When installing the battery pack on a platform, make sure that the platform is capable of supporting the weight of the battery pack.
Installation NOTE If one or two expansion battery packs should be installed together, take the full length of the battery packs into account to determine the appropriate position for the mounting bracket on the right side. Stat us Cha rge / Disc har ge RE SU R 6.4 Stat us Cha rge / Disc har ge RE SU R 6.4 Stat us Cha rge / Disc har ge Stat us Cha rge / Disc har ge Stat us Cha rge / Disc har ge 2. Drive the anchor bolts through the mounting brackets into the holes. 3.
Installation NOTE If an expansion battery pack should be installed, leave the right side unfastened. Secure the right side of the expansion pack to the wall after the expansion pack is fully installed. Connecting the battery pack to the inverter CAUTION Make sure that the inverter is turned off before connecting the battery pack to the inverter. To connect the cables coming from the inverter to the battery pack, take the following steps: 1. Remove the top cover.
Installation 3. Make sure that the circuit breaker switch is in the OFF position. Stat us Ch arge / Di scha rge RE SU R 6.4 4. Cut the removable pieces out of the grommets on the upper part of the left side. 5. Connect the provided cable adapter to the communication port, and then connect the communication cable coming from the inverter to the cable adapter through the right grommet.
Installation NOTE The battery pack must be connected to the inverter via a communication cable for proper operation. 6. If the inverter has a ground wire, connect it to the ground screw through the grommet. The screw type is M6. 7. Use 33 to 50 mm2 cables as the power cables to connect the battery pack to the inverter. Connect the power cables to the terminal block through the grommets. a) Remove the terminal cover plate, which is placed over the terminal block to protect it.
Installation 8. Perform the pre-operation checks described in Checking Before Operation on page 29. 9. Perform the procedure described in Starting the Battery Pack on page 31. Stat us Ch arge / Di scha rge RE SU R 6.4 10. Restore the top cover. Press down on the top cover until it locks in place. Stat us Ch arge / Di scha rge RE SU R 6.
Installation 3.3 Installing the Expansion Battery Pack Up to two expansion battery packs can be additionally installed. NOTE Expansion battery packs cannot be used independently of the main battery pack. Stat us Cha rge / Disc harg e RE SU R 6.4 Stat us Cha rge / Disc harg e RE SU R 6.
Installation 2. Make sure that the circuit breaker switch is in the OFF position and that the indicators on the front are off. If the main pack has been operating, it would take 60 seconds at maximum for the indicators to turn off. Stat us Ch arge / Di scha rge RE SU R 6.4 3. Cut the removable pieces out of the Stat us grommets on the upper part of the right side. Ch arge / Di scha rge RE SU R 6.4 4. Remove the top cover from the expansion battery pack.
Installation 5. Fasten the connecting bracket to the main pack. a) Loosen the M4 screw on the top left. b) Insert the connecting bracket through the left grommet. c) Hold the bracket in place and tighten the screw in the left hole of the bracket to a torque of 2 N·m. 6. Loosen the screw in the corresponding position of the expansion pack. NOTE When connecting an expansion pack to another one, use the right hole of the connecting bracket. 7.
Installation 8. Adhere the expansion pack closely to the main pack. 9. A terminal resistor is attached to the communication port in the middle. Remove it from the port. 10. Connect the cables to the connectors. 1) The connector on the left supplies power to the expansion pack for operation. Stat us Ch arge / Di scha rge RE SU R 6.4 2) The main pack communicates with the expansion pack through the port in the middle. 3) The expansion pack charges and discharges through the connector on the right.
Installation 12. Fasten the connecting bracket to the expansion pack. Hold the bracket in place and tighten the screw to a torque of 2 N·m. 13. Install the fuse in the expansion pack. a) Pull the fuse holder upwards to open it. b) Insert the fuse into the fuse holder. c) Restore the fuse holder. 14. Restore the top cover of the expansion pack.
Installation 15. Perform the pre-operation checks described in Checking Before Operation on page 29. 16. Perform the procedure described in Starting the Battery Pack on page 31. Stat us Ch arge / Di scha rge RE SU R 6.4 17. Restore the top cover of the main pack. Stat us Ch arge / Di scha rge RE SU R 6.4 If you have another expansion pack, repeat the aforementioned steps to connect the first expansion pack to the second one. Securing the expansion pack to a wall RESU R 6.
Installation bracket on the right side of the main battery pack. For details how to install mounting brackets, see Securing the battery pack to a wall on page 16.
Installation 3.4 Checking Before Operation There are things that need to be checked before starting the battery pack to ensure that it has no defects. CAUTION Make sure that the inverter is turned off while checking the battery pack. Circuit breaker switch Move the circuit breaker switch to the ON position. If the switch is in the Trip position between the ON and OFF positions, move it to the OFF position and then to the ON position.
Installation Voltage Measure the voltage at the terminal block using a voltmeter. 1. Make sure that the circuit breaker switch is put in the Trip position, and then measure the voltage. If the voltage is higher than 0 V, contact LG Chem or your distributor. 2. Move the circuit breaker switch to the ON position, and then measure the voltage. If the voltage is lower than 36 V, contact LG Chem or your distributor.
Installation 3.5 Starting the Battery Pack Put the battery pack in operation by taking the following steps: 1. Make sure that the circuit breaker switch is in the OFF or Trip position. 2. Move the circuit breaker switch to the ON position to turn on the main battery pack. See if the battery pack is successfully initialized. • The Status indicator on the front should turn on in orange and then change to green in 7 seconds. If it stays orange, contact LG Chem or your distributor.
4 Troubleshooting 4.1 Main Battery Pack Check the indicators on the front to determine in what state the main battery pack is.
Troubleshooting • Battery Under Temperature • Battery Discharge Over Current • Battery Charge Over Current • BMS Internal Communication • Battery Cell Voltage Imbalance An abnormal state is cleared when the main pack recovers its normal condition. NOTE For a serious fault, if no proper corrective actions are taken by the inverter, the main pack’s circuit breaker automatically trips to protect itself. For example, if the Status indicator stays orange for more than 5 minutes, the circuit breaker trips.
5 Emergency Situations The RESU 6.4 EX battery pack comprises multiple batteries that are designed to prevent hazards resulting from failures. However, LG Chem cannot guarantee their absolute safety. 5.1 Leaking Batteries If the battery pack leaks electrolyte, avoid contact with the leaking liquid or gas. If one is exposed to the leaked substance, immediately perform the actions described below. Inhalation: Evacuate the contaminated area, and seek medical attention.
Emergency Situations 3. If the battery pack has caught fire, do not try to extinguish the fire on the battery pack, but evacuate people immediately. WARNING When the battery pack is burning, it produces poisonous gases. 5.3 Wet Batteries If the battery pack is wet or submerged in water, do not let people access it. Contact LG Chem or your distributor for technical assistance. 5.4 Damaged Batteries Damaged batteries are dangerous and must be handled with the utmost care.
6 Warranty 6.1 Warranty Coverage LG Chem protects this product under warranty when this product is installed and used as detailed in this manual. Violating the installation procedure or using this product in any way not described in this manual immediately voids all warranties on this product. 6.
A Technical Information Product configuration Product code Main battery pack RESU 6.4 EX / R48126P2S Expansion battery pack RESU 6.4 EX (EXP) / R4863P2B Main pack + 1 expansion pack RESU 6.4 EX (SYS1) / R48189P2S Main pack + 2 expansion packs RESU 6.
Technical Information A.1 Main Battery Pack Nominal voltage 51.8 V Operating voltage 45.2 V to 58.1 V Nominal capacity 126 A·h Nominal energy 6.
Technical Information A.2 Expansion Battery Pack Nominal capacity 63 A·h Nominal energy 3.2 kW·h Dimensions 230 mm × 165 mm × 664 mm Weight 32 kg A.3 Main Pack plus 1 Expansion Pack Nominal capacity 189 A·h Nominal energy 9.6 kW·h Dimensions 636 mm × 165 mm × 664 mm Weight 92 kg A.4 Main Pack plus 2 Expansion Packs Nominal capacity 252 A·h Nominal energy 12.
Technical Information A.5 Compatible Inverters NOTE The list of inverters that are compatible with the RESU 6.4 EX battery pack may change without prior notice. NOTE RESU 6.4 EX does not support multiple inverters that are connected in parallel. For example, SMA inverters operating as a single phase cluster are not supported. If you want to build a single system using multiple inverters and multiple battery packs, contact your installer, inverter manufacturer, or LG Chem for consultation.
Technical Information Nedap Model Compatible with RESU 6.4 EX PR50SB-BU O PR37SB-BU O PR30SB-BU O Sungrow Model Compatible with RESU 6.
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