SOFAR BTS E5-20-DS5 (01) PDF Document

The main features are as follows:

• Full modular design, easy to install and transport
• Current balance between battery modules, higher battery available capacity
• Capacity Expansion by Stages
• Low power consumption of battery
• One key activate/shutdown
• Support low temperature heating function

The installation of SOFAR BTS series intelligent battery system must be in full compliance with national and local laws and regulations.

Before installing and maintaining the device, disconnect the device from the external device using the DC switch. Otherwise, the high voltage may cause serious injury.

Only qualified professionals or trained personnel are allowed to install, operate, and maintain the device.

Non-observance will result in death or serious injury. Follow the warnings in order to prevent death or serious injury!

Non-observance may result in death or serious injury. Follow the warnings in order to prevent serious injury!

Non-observance may result in minor injury. Follow the warnings in order to prevent injury!

Can cause damage to property if disregarded! Follow the warnings to avoid damaging or destroying the product.

Provides tips essential to the optimal operation of the product.

Machine ambient temperature: -10℃~50℃.

Relative humidity: 5-95% (non-condensing).

The highest altitude of the installation environment is 4000m.

The minimum space requirements are as follows:

• ≥300mm above the unit.
• ≥300mm below the unit.
• ≥300mm to the left side of the unit.
• ≥300mm to the right side of the unit.
• The total height from the ground to the top of the highest possible stacked configuration should be less than 2.5m.

Procedure:

1. Place the base against the wall and keep it 10 to 25 mm away from the wall surface. Use a level to adjust the hole position and mark the hole position with a marker.
2. Remove the base, drill holes using a hammer drill (φ 8mm, depth range 60-65 mm), and tighten expansion bolt to ensure that the base is securely installed.
3. Mark the holes for fixing the battery module and BDU with a marker according to the dimensions shown in Figure 3-3.

Procedure:

1. Place the first battery module on the base.
2. Install connectors on both sides and tighten the six screws with a cross screwdriver.
3. Install the remaining battery modules and BDU from bottom to top. (Before installing the next module, ensure that the screws on the side connectors of the previous module are firmly installed.)

Procedure:

1. Drill holes with a hammer drill (φ 8mm, depth range 60-65 mm). Reposition and drill the holes, if the original one has a large deviation.
2. Install the anti-tip bracket B on the wall, and fasten expansion bolt.
3. Adjust the anti-tip bracket A, make sure the holes are matched between anti-tip bracket A and anti-tip bracket B.
4. Connect and fix the anti-tip bracket A and anti-tip bracket B with M6*16 screws.

ATTENTION:

• Only professional electrical engineers can install and maintain batteries.
• When making electrical connections, wear rubber gloves and protective clothing.
• When connecting the device electrically, you must first connect the protection ground cable. When removing a device, ensure that the PGND cable is removed at last.

DANGER:

• Before electrical connection, ensure that the DC switch of the BDU is OFF, the black start switch indicator is OFF, and the battery module has no output voltage.
• Prepare a battery cable and ensure that the positive and negative output polarities of the battery are correct; otherwise, the device may be damaged.

Table 4-1 Cables prepared by customers:

Procedure:

As shown in Figure 4-2, connect the grounding points between modules with protective grounding cables and ensure reliable connection of grounding cables.

As shown in Figure 4-3, connect the BAT-IN power port on the BDU to the positive and negative terminals (B+ and B-) of the battery module using power cables. Connect the remaining battery modules from top to bottom in this way, and secure the cables using cable ties. Ensure that the cables are securely.

Procedure:

1. Connect the Link Port on the BDU to the Link Port In Port on the battery module by using a communications cable, lock the big nut and then the smaller nut clockwise to ensure a reliable connection, and connect the remaining battery modules from top to bottom, and secure them with cable ties.
2. Install a terminal resistor on the Link Port Out Port of the last battery module in the system, and lock the nut clockwise to ensure a firm and reliable connection (missing the terminal resistor may cause battery communication failure).

Table 4-2 Communication cable pin definition:

Step 1: Crimp OT terminals

Step 2: As shown in Figure 4-9, install a protection ground cable at the ground terminal on the right of the BDU and connect it to the external ground protection point.

Procedure:

1. Select proper cable types and specifications based on Table 4-1. Remove cable connectors from positive and negative connectors. (It is suggested to use different colors to distinguish positive and negative poles).
2. Use a wire stripper to strip off the insulation layer of the positive and negative cables to a proper length. For details, see the peeling length diagram.4-10.
3. Insert the positive and negative cables with the insulation layer removed into the positive and negative metal terminals, and use crimping pliers to press the cable to the metal core of the terminal. Ensure that the cable is firmly crimped with the metal core.
4. The crimped positive and negative cables pass through the locking nut and are inserted into the corresponding plastic shell respectively until a clicking sound is heard, indicating that the metal core is clamped into place. Tighten the locking nut.
5. Use a multi meter to check the positive and negative poles, Connect the assembled DC terminal connector to the DC B+/B- input terminal on the battery power distribution unit, and connect the other end to the inverter side. Ensure that the connection is secure.

Install the communication cable delivered with the accessories to the COM-OUT port of the battery distribution box, and connect the other end to the BMS communication ports CAN-H and CAN-L of the inverter respectively according to the label definition.

The parallel communication cable is connected from the COM-OUT port of the master to the Link port of the slave.

Procedure:

1. To power OFF the battery system, set the switch of the battery distribution unit to OFF, turn OFF the indicator of the battery black start switch, and all the LED indicator of the battery distribution unit is OFF. To power OFF the system for five minutes, ensure that the remaining battery charges are discharged.
2. Use a cross screwdriver to loosen the screws on the fuses cover and remove the fuses cover.
3. Open the fuse box backward, take out the damaged fuse, place a new fuse in the fuse slot, and close the fuse box until you hear a clicking sound, indicating that the fuse box is installed in place.

Table 4-3 diagram of replacing fuse (for one possible fuse type):

Procedure:

1. Install protective covers on both sides of the base.
2. Install protective covers on both sides of the battery module or BDU.
3. Tighten the protective cover with screws.

Please double check the following items before running:

• Battery module, BDU and the base should be completely fixed.
• Each BAT+/BAT- line is firmly connected, the polarity is correct, and the voltage is in line with the accessible range.
• The DC switch of the BDU is OFF, and the black start indicator is OFF.
• Ensure that the communication cable is firmly connected to the terminal resistor.
• Install sealing plugs on unused terminals or interfaces.
• Cable is arranged reasonably, and the cable is tidy and without damage.

1) Set the DC switch of the BDU to ON.

2) Press the black start switch on the BDU to power on the battery for the first time. Observe the LED indicator on the BDU to check the running status.

Procedure: Battery Parameter Settings

1) Battery type settings: Select “SOFAR BTS 5K” for Battery type.

2) Set discharge depth: Set the following parameters as required: ①on_grid DOD: ② off_grid DOD: ③off_grid discovery discharge buffer

3) Set force charge time (The time difference is no less than 3 hours)

4) Save

If batteries are connected to both battery channels of the inverter, perform the preceding steps to set battery parameters for batteries 1 and 2.

After battery parameters are set, ensure that the system has reliable PV or utility power supply. Then, go to Input 0715 > 2.Advanced Settings > Battery parameter > Enter. Select Confirm, which initiates Auto cfg addr.

Check the menu of the inverter and ensure that the “Bat Low Temperature Heating” has been set to Enable by navigating to Input 0715 > 2.Advanced Settings > Bat LowTemperature Heating > Enter, and selecting Enable.

The recommended optimal operating temperature range is 10°C

When the battery pack temperature is below 0℃, immediate charging is not possible, and the battery pack (the built-in heating module can be automatically enabled) will activate the heating feature automatically. The best charging performance of the battery can be achieved after heating for less than 3h. The heating feature will consume power.

Procedure:

1. Insert the USB drive into the computer.
2. The upgrade file folder is named firmware. After receiving the upgrade file, decompress it and save it in a USB disk.
3. Insert the USB disk into the USB/Wifi interface of the energy storage inverter.
4. Set the DC switch of the battery distribution unit to “ON state”, press the black start switch, and the energy storage inverter and battery start up and run.
5. Perform the following operations on the LCD of SOFAR HYD series energy storage inverter: Navigate to Input 0715 > 6.Software Update > Enter, then select one of: 1.Software Update (PCS), 2.Software Update (BMS), 3.Software Update (PCU), or 4.Software Update (BDU).
6. If an error message occurs, upgrade again. If this situation persists for several times, contact technical support for help.
7. After the upgrade is complete, you can view the current software version in System Info >> Software Version.

1) Press the black start switch of BDU.

2) Set the DC switch of the BDU to OFF. All the LED indicators on the battery distribution box are OFF. After the system is powered OFF for five minutes, ensure that the remaining battery charges are discharged before performing maintenance.

Check whether the communication cable or port of the battery module is faulty.

The lithium battery is faulty. Shut down the inverter and lithium battery. Wait for 5 minutes and start the inverter and lithium battery. Check whether the fault is rectified. If not, contact technical support.

Please contact technical support.

Please contact technical support.

Restart the battery. If the problem is not resolved, please contact technical support.

Check whether the number of batteries is set correctly. If the setting is correct, please contact technical support to upgrade software.

Please make sure the battery is installed in a cool well-ventilated place. If the battery is installed correctly, please contact technical support.

If the battery is almost fully, no action is required. Otherwise, please contact technical support.

If the battery is almost empty, no action is required. Otherwise, please contact technical support.

Power off and wait for 2 hours. If the problem is not solved, please contact technical support.

If this fault occurs occasionally, wait a few minutes to see whether the problem is solved. If this fault occurs frequently, please contact technical support.

If this fault occurs occasionally, wait a few minutes to see whether the problem is solved. If this fault occurs frequently, please contact technical support.

Restart the battery and wait for minutes. If the problem is not resolved, please contact technical support.

Check whether the wiring is correct and restart the battery. If the problem is not resolved, please contact technical support.

Restart the battery. If the problem is not resolved or occurs frequently, please contact technical support.

Perform the following steps to check whether the current installation status meets the battery operating requirements:

• Is the battery installed in a clean, dry, well-ventilated location?
• Check whether the battery DC switch is off?
• Check whether the cable section and length meet requirements?
• Is the wiring good?
• Whether the configuration Settings are correct for the user’s specific installation?
• Whether the communication cable is correctly connected and is not damaged?

Please clean the battery module with an air blower, a dry & soft cloth or a soft bristle brush. Do not clean the inverter with water, corrosive chemicals, detergent, etc.

Clean the heat sink with compressed air, a soft cloth, or a soft brush. Do not use water, corrosive chemicals, cleaning agents, or strong detergents to clean the radiator.

Battery Module Storage Requirements:

• Environment temperature : -10℃~45℃, Recommended storage temperature: 25℃~35℃.
• Storage relative humidity range: 5%~70%.
• Store in a dry, clean, and ventilated environment, away from direct sunlight.
• When storing the battery module, place it correctly. Do not put the battery module upside down or on its side.
• If the battery module is stored for a long time, replenish the power supply periodically. Battery module power supply requirements: the charging current is less than or equal to 7A, and the battery module needs to be charged to 50%SOC.

Table 6-2 Recharge conditions when in storage:

Recharge the battery within the time range specified in the following table (90%DOD). Otherwise, the over discharged battery module will be damaged.

Table 6-3 Recharge conditions when battery is over discharged:

The Rated Power for the SOFAR BTS E5-20-DS5 system is 2.5kW.

The Nominal Voltage for the SOFAR BTS E5-20-DS5 system is 400 Vd.c..

The Operating Voltage Range for the SOFAR BTS E5-20-DS5 system is 350-435 Vd.c..

The Max. Charging Current for the SOFAR BTS E5-20-DS5 system is 6A.

The Max. Discharging Current for the SOFAR BTS E5-20-DS5 system is 7.5A.

The Dimension(W*H*D) for the SOFAR BTS E5-20-DS5 system is 708*680*170 mm.

The Weight for the SOFAR BTS E5-20-DS5 system is 59kg.

The Enclosure Type for the SOFAR BTS E5-20-DS5 system is IP65.

The Operating Temperature Range for the SOFAR BTS E5-20-DS5 system is Charge: -10°C to +50°C / Discharge: -20°C to +50°C.

The Humidity range is 5%~95%.

The Installation type is Wall/Floor stand.

The Max. Operating Altitude is 4000m.

The Nominal Voltage for the BTS 5K Battery Module is 400 Vd.c..

The Rated Power for the BTS 5K Battery Module is 2.5kW.

The Dimensions(W*H*D) for the BTS 5K Battery Module are 708*420*170 mm.

The Weight for the BTS 5K Battery Module is 50kg.

The Maximum Current for the BTS 5K-BDU Battery Distribution Unit is 30A.

The Protective Class for the BTS 5K-BDU Battery Distribution Unit is Class I.

The Enclosure Type for the BTS 5K-BDU Battery Distribution Unit is IP65.