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- Page 1 BTS E5 … E20-DS5 Installation and operating manual Version 01 | November 2022 English BTS E5-DS5, E10-DS5, E15-DS5, E20-DS5...
- Page 2 ABOUT THIS MANUAL BTS E5–E20-DS5...
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Page 3: Table Of Contents
ABOUT THIS MANUAL Table of Contents 1 About this manual Copyright declaration Structure of the manual Scope Target group Symbols used Basic safety information Safety information Symbols and signs Product features Product introduction BTS battery system components Product dimensions Labelling on the device Battery capacity expansion Installation Installation information... - Page 4 ABOUT THIS MANUAL Safety instructions Electrical connection Connecting the PE cable Connecting the power cables Connecting the communication cables Connecting the inverter Parallel system setup Replacing the fuse Installing the protective cover Commissioning the battery system Safety check before commissioning Initial startup Setting the parameters Software update...
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Page 5: About This Manual
ABOUT THIS MANUAL About this manual This manual contains important safety information that must be observed during installation and maintenance of the device. Carefully read this manual before use and retain it for future reference! This manual must be treated as an integral component of the device. The manual must be kept in close proximity to the device, including when it is handed over to another user or moved to a different location. -
Page 6: Scope
This product manual describes the installation, electrical connection, commissioning, maintenance and troubleshooting of the BTS E5...20- DS5 energy storage system. The series includes the following models: BTS E5-DS5, BTS E10-DS5, BTS E15-DS5, BTS E20-DS5 Target group This manual is intended for specialist electrical engineers who are responsible for the installation and commissioning of the energy storage system in the PV system, as well as the PV system operators. - Page 7 ABOUT THIS MANUAL DANGER Non-observance will result in death or serious injury. Follow the warnings in order to prevent death or serious injury! • WARNING Non-observance may result in death or serious injury. Follow the warnings in order to prevent serious injury! •...
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Page 8: Basic Safety Information
BASIC SAFETY INFORMATION Basic safety information NOTE The installation of the BTS battery system must be in full • compliance with national and local laws and regulations. SOFARSOLAR is not responsible for any personal injury or • property damage caused by improper use. If you have any questions or problems after reading the •... - Page 9 BASIC SAFETY INFORMATION Please contact the nearest authorised service centre if any maintenance or repairs are required. Please contact your dealer to obtain information about your nearest authorised service centre. Do NOT carry out repairs on the device yourself; this may lead to injury or property damage. Before installing the device or carrying out maintenance on it, you must open the DC switch.
- Page 10 BASIC SAFETY INFORMATION place for the installation of electrical devices. Ensure that there is sufficient space for an emergency exit which is suitable for maintenance. Ensure sufficient ventilation in order to guarantee an air circulation for the cooling of the environment. Air humidity should be less than 90% during assembly.
- Page 11 BASIC SAFETY INFORMATION may result in short-circuiting or damage to the batteries in the box, which may lead to leakage, rupture, explosion or fire. NOTE Ensure any transport takes place in compliance with the following standards: Sea transport must take place in full compliance with the •...
- Page 12 BASIC SAFETY INFORMATION 2.1.4 Storage requirements ATTENTION Can cause damage to property if disregarded! Select a dry, tidy area that is well-ventilated. • Ambient temperature range: -10 C to 45 • ° ° Relative humidity: 5 to 70%. • Place the battery module correctly, not upside down or on its •...
- Page 13 BASIC SAFETY INFORMATION Dangerous DC voltage Before establishing the electrical connection, cover the PV • modules using opaque material or disconnect the PV generator from the inverter. Solar radiation will cause dangerous voltage to be generated by the PV generator! DANGER Danger through electric shock! All installations and electrical connections may only be carried...
- Page 14 BASIC SAFETY INFORMATION Electric shock Contact with the electrical grid or the device’s terminals may • result in an electric shock or fire! Do not touch the terminal or the conductor which is connected • to the electrical grid. Follow all instructions and observe all safety documents that •...
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Page 15: Symbols And Signs
BASIC SAFETY INFORMATION IMPORTANT Unauthorised repairs! Following the elimination of any faults, the inverter should be • fully functional once more. Should any repairs be required, please contact a local authorised service centre. The internal components of the inverter must NOT be opened •... - Page 16 BASIC SAFETY INFORMATION WARNING Damage due to overvoltage Ensure that the input voltage does not exceed the maximum • permissible voltage. Overvoltage may cause long-term damage to the inverter, as well as other damage that is not covered by the warranty! 2.2.1 Symbols on the battery system Several symbols pertaining to safety can be found on the battery system.
- Page 17 BASIC SAFETY INFORMATION Battery module Symbol Description Residual voltage is present in the battery module! Before carrying out any maintenance, you should wait five minutes to ensure that the capacitor has been fully discharged. Beware of high voltage and electric shock. Caution! Hot surface Earthing point Please read the manual before installing the battery...
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Page 18: Product Features
PRODUCT FEATURES Product features This chapter describes the product features, dimensions and efficiency levels. Product introduction The BTS E5–E20-DS5 is an intelligent battery system composed of BTS 5K battery module(s) and a BTS 5K-BDU (battery distribution unit). The system operates at high input and output DC voltage. Its modular and stacked design enables a flexible configuration based on the user's specific requirements. -
Page 19: Bts Battery System Components
PRODUCT FEATURES The main features include: Fully modular design for easy installation and transport • Balanced current between battery modules for higher available • battery capacity Expand storage capacity in stages, at any time • Black start capability to startup the battery without a grid connection •... -
Page 20: Product Dimensions
PRODUCT FEATURES Please refer to below explanation for a full understanding of the BTS battery system naming: BTS: Product series name. • E5/E10/E15/E20: Battery capacity (kWh). • DS5: Battery module specification (BTS 5K). • Product dimensions Please refer to the product dimensions in below table. The dimensions for each setup is given, e.g. -
Page 21: Battery Capacity Expansion
PRODUCT FEATURES Battery module Battery capacity expansion The BTS battery system series supports capacity expansion. One distribution unit (BDU) can manage up to 4 battery modules (BTS). Up to 2 BDU's can be connected in parallel, with each unit having an independent power connection to the inverter. - Page 22 PRODUCT FEATURES BTS E5–E20-DS5...
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Page 23: Installation
INSTALLATION Installation Installation information DANGER Fire hazard Do NOT install the battery system on flammable material. • Do NOT install the battery system in an area in which flammable • or explosive material is stored. CAUTION Burning hazard Do NOT install the inverter in places where it can be accidentally •... -
Page 24: Examination Before Installation
INSTALLATION Examination before installation 4.2.1 Checking the external packaging materials Packaging materials and components may become damaged during transportation. Therefore, the external packaging materials must be examined before installation. Check the external packaging material for damage, e.g. holes and cracks. If you discover any cases of damage, do not unpack the battery modules and battery distribution unit and contact the transport company and/or dealer immediately. - Page 25 INSTALLATION Scope of delivery BTS 5K Image Description Quantity Battery module Protective cover Power cable Communication cable Anti-tip bracket A Side connector Anti-tip bracket B PE cable M6*14 hexagon screw M4*10 SEMS screw M6*60 expansion bolt Termination resistor Quality certificate BTS E5–E20-DS5...
- Page 26 INSTALLATION Scope of delivery BTS 5K-BDU (Battery distribution unit) Image Description Quantity Battery distribution unit Protective cover left side Protective cover right side Floor base Floor base protective cover BDU parallel communication cable BMS communication cable M6*14 hexagon screw M4*10 SEMS screw M6*60 expansion bolt Battery positive input terminal housing Battery negative input terminal housing...
- Page 27 INSTALLATION Anti-tip bracket B Manual Warranty card Quality certificate Scope of delivery BTS 5K Extension Kit (SOFAR No. 701.00000068-0) Image Description Quantity Floor base Power cable Communication cable PE cable Manual Warranty card Quality certificate BTS E5–E20-DS5...
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Page 28: Connections
INSTALLATION Connections CAUTION Damage during transportation Please check the product packaging and connections carefully • prior to installation. Battery distribution unit Front side left side right side ① ② Start button ③ BAT power in ④ Link port ⑤ COM in ⑥... -
Page 29: Tools
INSTALLATION Battery module Front side left side right side ① Battery module ② Left handle ③ Output port B+ ④ Output port B- ⑤ Grounding ⑥ Link port out ⑦ Link port in ⑧ Right handle Tools Prepare the tools required for the installation and the electrical connection. - Page 30 INSTALLATION No. Tool Model Function Removal tool Removal of battery module / distribution unit output terminals Wire stripper Used to strip the wire Sleeve Used to installed the support bracket Crimping tool Used to crimp the OT connectors Heat gun Used to coat Multimeter Used to check the wiring...
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Page 31: Installation Location
INSTALLATION No. Tool Model Function ESD gloves for the installer Safety goggles for the installer Anti-dust for the installer respiratory mask Installation location Choose a suitable position for the installation of the BTS energy storage system. Ensure that the following requirements have been fulfilled: Select a dry, tidy area that is well-ventilated •... - Page 32 INSTALLATION To ensure sufficient space for installation and heat dissipation, please refer to the following clearance distances: BTS E5–E20-DS5...
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Page 33: Installation Of The Battery System
INSTALLATION Installation of the battery system 4.6.1 Floor base Place the base bracket onto a stable ground close to the wall, keeping a distance of 10 to 25 mm, and mark the hole. Put the wall bracket aside and drill the holes. Wall floor BDU base... - Page 34 INSTALLATION NOTE If the holes cannot be drilled on the ground, the battery • modules must be secured to the wall. Mark the holes for the battery modules and BDU according to the diagram below: BDU (3*BTS 5K) 3*BTS 5K BDU (2*BTS 5K) 2*BTS 5K BDU (1*BTS 5K)
- Page 35 INSTALLATION Secure the module using both side connectors and fasten them with the six M4 screws. in the wall bracket. BTS E5–E20-DS5...
- Page 36 INSTALLATION Install the remaining battery modules and the BDU. Ensure that the side connectors are firmly fastened before installing the next unit. BTS E5–E20-DS5...
- Page 37 INSTALLATION 4.6.3 Anti-tip bracket Drill the holes with a hammer drill (φ 8mm, depth range 60-65 mm). If any error was made, reposition and redrill the holes. Install the anti-tip bracket B to the wall, and fasten the expansion bolt. Adjust anti-tip bracket A to ensure that the connection holes of anti- tip bracket A and anti-tip bracket B are aligned.
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Page 38: Electrical Connections
ELECTRICAL CONNECTIONS Electrical connections Safety instructions This topic describes the electrical connections of the BTS E5–E20-DS5 smart battery system. Read this section thoroughly and carefully before connecting the cables. ATTENTION The installation and maintenance of the battery system must • be carried out by a professional electrical engineer. -
Page 39: Electrical Connection
ELECTRICAL CONNECTIONS Electrical connection The electrical connection is established as follows: Connect PE cable Connect power cable Connect communication cable Connecting the PE cable NOTE • The grounding cable can be found in the accessories of the BTS 5K battery module. Follow the instructions in below diagram. -
Page 40: Connecting The Power Cables
ELECTRICAL CONNECTIONS Connecting the power cables NOTE The power cables can be found in the accessories of the • BTS 5K battery module. BTS E5–E20-DS5... - Page 41 ELECTRICAL CONNECTIONS Please follow below steps and the diagram: Connect the BAT IN port of the BDU to the positive and negative terminals (B+, B-) of the battery modules. Connect the positive and negative terminals (B+, B-) between the battery modules from top to bottom. Secure all cables using cable ties and ensure that the connections are secure and reliable.
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Page 42: Connecting The Communication Cables
ELECTRICAL CONNECTIONS Connecting the communication cables NOTE The communication cables can be found in the accessories • of the BTS 5K battery module. Please follow below steps and the diagram: First connect the BDU (COM IN) to the top battery module (Link Port In) with the communication cable. - Page 43 ELECTRICAL CONNECTIONS Communication RJ45 Termination resistor A single 20 kWh battery system must be installed in two rows. Connect the power cables (B+, B-) and communication cable (Link Port In) from the top battery module of the first row (without the BDU) to the bottom battery module of the other row (B+, B- and Link Port In).
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Page 44: Connecting The Inverter
ELECTRICAL CONNECTIONS NOTE When extending a battery system with more BTS 5K • batteries, an extension kit must be used for safety reasons. The optional extension kit include a 2.7m power cable and communication cable, and a base and accessories (SOFAR No. - Page 45 ELECTRICAL CONNECTIONS BTS E5–E20-DS5...
- Page 46 ELECTRICAL CONNECTIONS Below is the schematic connection diagram of a system where the neutral line and ground line are connected together (TNC) BTS E5–E20-DS5...
- Page 47 ELECTRICAL CONNECTIONS NOTE In certain regions there are specific local safety requirements • of the power grid. Ensure to comply with all local safety requirements. According to the Australian safety regulations, the neutral • cables on the grid-connected side and EPS side must be connected together.
- Page 48 ELECTRICAL CONNECTIONS ATTENTION Avoid scratching the core of the cable when stripping it. • The grounding cable must be ≥4mm and meet the • requirements for outdoor use. The cavity formed by crimping the conductor of the OT • terminal should be completely covered with the wire core and the core should be tightly bonded to the OT terminal without loosening.
- Page 49 ELECTRICAL CONNECTIONS 5.6.2 Connecting the DC power cables NOTE The recommended power cable specifications: 4…6mm • Please follow below steps and the diagram: Select a proper cable type based on the specifications above. Remove the cable glands from the positive and negative connectors. It is recommended to use different colours to distinguish between the positive and negative connectors.
- Page 50 ELECTRICAL CONNECTIONS Guide the crimped cables through the locking nuts and into the corresponding plastic shells until a click is heard. The click indicates that the metal cores are now in place. Tighten the locking nuts. ③ Positive connector ④ Negative connector Use a multimeter to check the positive and negative poles.
- Page 51 ELECTRICAL CONNECTIONS NOTE To avoid cable breakage, it is recommended not to use hard • DC input cables, such as armoured cables. Before assembling the DC connector, ensure that the cable • polarity is correct and label the positive and negative cables properly.
- Page 52 ELECTRICAL CONNECTIONS 5.6.3 Connecting the BMS communication cable Connect the supplied communication cable from the COM OUT Port of the BDU to the inverter's BMS communication ports CAN-H and CAN-L respectively according to the label definition. To the inverter BDU (right side) The pin definitions of the COM OUT Port of the BDU are given below: COM Port Function...
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Page 53: Parallel System Setup
ELECTRICAL CONNECTIONS Parallel system setup The BTS battery system supports the parallel operation of up to two systems. Follow below diagram for the correct wiring: ^Master Master Slave Signal cable Power cable The power cables are connected from the BDUs to the inverter separately. -
Page 54: Replacing The Fuse
ELECTRICAL CONNECTIONS Replacing the fuse If the BDU's fuse is damaged, a professional engineer can replace it. Please follow below steps: To shut down the battery system, set both the DC switch and start button at the BDU to OFF. All LED indicators of the BDU are now OFF. -
Page 55: Installing The Protective Cover
ELECTRICAL CONNECTIONS No Brand Model Specifications Sino RS309-MF-14C40A Rated voltage: 750 Vdc Rated current: 40 A Bussmann FWP-40A14Fa Packaging dimensions: 51*14.3 mm FRB-C14-63A Installing the protective cover After completing and double checking the electrical wiring, the protective cover can be installed. Please follow below steps: Install the protective covers on both sides of the base. -
Page 56: Commissioning The Battery System
COMMISSIONING THE BATTERY SYSTEM Commissioning the battery system Safety check before commissioning Ensure below points before turning the battery system on: The battery modules, BDU and base are all securely mounted. • Each BAT+/BAT- wire is firmly connected with the correct polarity, •... -
Page 57: Software Update
COMMISSIONING THE BATTERY SYSTEM According to your battery setup, set the following Battery Parameters (Battery 1 and Battery 2 if connected): Battery type: BTS 5K Discharge Depth Full Charge Time “Auto Config. Address” will detect the number and addresses of the connected batteries automatically within 2-3 Minutes. -
Page 58: Shutdown Procedure
COMMISSIONING THE BATTERY SYSTEM Step 4: Press Back key to enter menu, and Select “Software Update” with Enter Step 5: Enter password 0715 Adjust password by up and down key for next character please press Enter Step 6: Select the update you want to perform: HYD inverter firmware Battery management system in BTS battery DC/DC converter in BTS battery... -
Page 59: Operation Of The Device
OPERATION OF THE DEVICE Operation of the device This chapter describes how to interpret the LED indicators of the BTS E5–E20-DS5 smart battery system. Control panel and display field 7.1.1 Indicator lights Below diagram shows all indicator lights on the BTS smart battery system. - Page 60 OPERATION OF THE DEVICE STATUS LED Description Green light on Discharging SOC LED Colour Description Blue* 6…25% SOC Blue* 26...50% SOC Blue* 51...75% SOC Blue* 76...95% SOC Blue* 96...100% SOC *flashing while charging according to the SOC, steady light when discharging NOTE If the SOC goes below 6%, all lights are turned off.
- Page 61 OPERATION OF THE DEVICE SOC LED Description L1 + L2 + L4 Terminal connection abnormal L1 + L3 Communication fault L1 + L3 + L4 Fuse damaged L1 + L4 Sampling fault Low temperature L2 + L3 Battery voltage difference too high L2 + L4 Battery cell fault L2 + L3 + L4...
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Page 62: Troubleshooting Handling
TROUBLESHOOTING HANDLING Troubleshooting handling Troubleshooting This section contains information and procedures pertaining to the remedying of potential problems with the BTS smart battery system. For specific details about the alarm and fault information displayed by the indicator lights, please refer to the paragraph 7.1. In case of an alarm or fault, an alarm report will be uploaded to the inverter. - Page 63 TROUBLESHOOTING HANDLING ID No. Event Name Solution Battery 1 communication is faulty Check whether the Battery 2 communication is faulty communication cable or port of the battery Battery 3 communication is faulty module is faulty. Battery 4 communication is faulty BMS overvoltage alarm The lithium battery is faulty.
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Page 64: Maintenance
TROUBLESHOOTING HANDLING The ambient temperature overheats Turn off the system and wait for two hours. If the problem is not solved, contact technical support. Charging prohibition alarm Check the installation and the indicated faulty Discharging prohibition alarm component. Restart Battery imbalance alarm the battery system. - Page 65 TROUBLESHOOTING HANDLING ATTENTION Before performing any maintenance work, turn the battery • system off and wait at least 5 minutes. Ensure that the capacitor inside the battery is discharged. 8.2.1 Cleaning the battery module Clean the battery using an air blower and a dry, soft cloth or a soft bristle brush.
- Page 66 TROUBLESHOOTING HANDLING Environment Environment Storage time temperature relative humidity < -10℃ Off limits -10℃…25℃ 5%…70% ≤12 months 30%…60% 25℃…35℃ 5%…70% ≤6 months 30%…60% 35℃…45℃ 5%…70% ≤3 months 30%…60% > 45℃ Off limits 8.2.4 Recharge requirements during storage Please recharge the deeply discharged (90% DOD) batteries in a timeframe in accordance with the following table, otherwise the deeply discharged battery modules will be damaged.
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Page 67: Manufacturer's Warranty And Liability Terms
MANUFACTURER'S WARRANTY AND LIABILITY TERMS Manufacturer's warranty and liability terms Warranty period For details about the warranty period and its calculation method for SOFARSOLAR battery products, please refer to SOFARSOLAR's Warranty Agreement. Warranty void If equipment failure is caused by any of the below reasons, warranty shall not be covered: The "warranty card"... - Page 68 MANUFACTURER'S WARRANTY AND LIABILITY TERMS and collect proof of the cause of damage, such as the unloading of the container/packaging; Failure to follow product user manuals, instructional installation • manuals and maintenance guidelines; Improper use or misuse of the device; •...
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Page 69: Technical Data
TECHNICAL DATA Technical data Datasheet BTS E5-DS5 BTS E10-DS5 BTS E15-DS5 BTS E20-DS5 System Parameters System Battery type Battery distribution unit BTS 5K-BDU Number of battery distribution units Battery module BTS 5K Number of battery modules Battery total energy (kWh) 5.12... - Page 70 TECHNICAL DATA Installation Floor stand Cooling Natural Display LED indicators Communication Compatible inverters Please refer to the BTS E5- 20-DS5 configuration list Battery Module Model BTS 5K Battery module energy 5.12 (kWh) Depth of discharge 90.0% Rated power (W) 2500 Dimension (mm) 708*170*420 Weight (kg)
- Page 72 Shenzhen SOFARSOLAR Co., Ltd. 11/F, Gaoxinqi Technology Building, District 67, XingDong Community, XinAn Street, Bao’An District, Shenzhen, China SofarSolar GmbH Krämerstrasse 20 72764 Reutlingen Germany Email: service.uk@sofarsolar.com Web: www.sofarsolar.com...
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