Page 1 HS3 Series Series SINGLE-PHASE ALL-IN-ONE ENERGY STORAGE SYSTEM USER MANUAL HS3-(3K-6K)-S2-(W, G)-(B, P)
Page 2 We make constant improvements on the products and their documentation. This manual is subject to change without notice; these changes will be incorporated in new editions of the publication. To access the latest documentation, visit the SAJ website at https://www.saj-electric.com/.
Page 3 HS3 Series TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ..........................................1 1.1. About This Document ....................................2 1.1.1. Overview ......................................... 2 1.1.2. Target audience ......................................2 1.2. Safety ..........................................2 1.2.1. Safety Levels ........................................2 1.2.2. Symbol Explanation ..................................... 3 1.2.3.
Page 4 HS3 Series 2.5. LED Indicators on the HS3 Inverter..............................17 2.6. Datasheet ........................................19 2.6.1. System .......................................... 19 2.6.2. Battery Pack ........................................ 23 2.6.3. Battery Junction Box ....................................23 2.6.4. Charger ........................................24 3. Transportation and Storage ........................................27 3.1.
Page 5 HS3 Series 5.2.5. Assembling the EMS Electrical Connection ............................83 5.2.6. Installing a Circuit Breaker ..................................84 5.2.7. Installing an RCD (optional) ................................... 84 5.2.8. Connecting the Smart Meter ................................. 84 5.2.9. Connecting the Grid and Backup Loads ............................. 84 5.2.10.
Page 6 HS3 Series...
Page 7 HS3 Series...
Page 8 HS3 Series SAFETY PRECAUTIONS...
Page 9 SAJ system HS3-(3K-6K)-S2-(W,G)-(B,P) . It is a single-phase all-in-one energy storage system which includes the SAJ products listed in section 2.2 "Models”. Read the user manual carefully before any installation, operation and maintenance and follow the instructions during installation and operation. Keep this manual all time available in case of emergency.
Page 10 HS3 Series 1.2.2. Symbol Explanation Symbol Description Danger: Electrical shock hazard This device is directly connected to public grid and thus all work to the battery shall only be carried out by qualified personnel. WARNING: No open flames Do not place or install near flammable or explosive materials.
Page 11 • Do not stay close to the equipment while there are severe weather conditions including storm, lighting, etc. • Before opening the housing, the SAJ inverter must be disconnected from the grid and PV generator; you must wait for at least five minutes to let the energy storage capacitors completely discharged after disconnecting from power source.
Page 12 • Disconnect the AC circuit breaker, or keep it disconnect if it is tripped, and secure it against reconnection. • The SAJ inverter must only be operated with the PV generator. Do not connect any other source of energy to the SAJ inverter.
Page 13 ⚫ Operate and use the battery properly according to the user manual. Any attempts to modify battery without the permission from SAJ will void the limit warranty for the battery. ⚫ The battery must be installed at a suitable location with sufficient ventilation.
Page 14 HS3 Series area where the battery pack is installed. Wear a gas mask and avoid inhaling toxic gases and harmful substances produced by the fire. ⚫ Use an ABC fire extinguisher, if the fire is not caused by battery and not spread to it yet.
Page 15 HS3 Series...
Page 16 HS3 Series PRODUCT INFORMATION...
Page 17 HS3 Series 2.1. General Introduction The SAJ system HS3-(3K-6K)-S2-(W, G)-(B, P) contains at least one HS3 inverter and one BU3 battery pack. It is a single-phase all-in-one energy storage system which is applied to the residential photovoltaic energy storage system which stores the electricity for household future use.
Page 18 HS3 Series ⚫ HS3-6K-S2-G-B ⚫ HS3-6K-S2-G-P ⚫ HS3-6K-S2-G-B-IE* ⚫ HS3-6K-S2-G-P-IE* * BE indicates that this model is available in Belgium only. * IE indicates that this model is available in Ireland only. ◼ Battery Equipment Basic model Professional model Battery ⚫...
Page 19 HS3 Series BE: This model is applicable to Belgium ONLY. BU3 - 5.0 - TVx - PRO - BASE BU3: Battery model series 5.0: The rated energy of the battery is 5.0 kWh. TVx: TV indicates a pack-level optimizer. x indicates the battery cell manufacturer.
Page 20 HS3 Series 2.3.2. BU3 Battery Pack Type A battery pack ◼ Battery pack with a base Figure 2.2. Dimension of the type A BU3 battery pack with a base Battery pack without a base Figure 2.3. Dimension of the type A BU3 battery pack without a base...
Page 21 HS3 Series ◼ Type B battery pack Battery pack with a base Figure 2.4. Dimension of the type B BU3 battery pack with a base Battery pack without a base Dimension of the type B BU3 battery pack without a base...
Page 22 HS3 Series 2.3.3. BC3 Battery Junction Box Dimension (mm): 150*695*170 Figure 2.5. Dimension of the BC3 battery junction box 2.3.4. CU2 Charger 170 mm 160 mm 695 mm Figure 2.6. Dimension of the CU2 charger...
Page 23 HS3 Series 2.4. Ports, switches, and LED on the HS3 inverter Figure 2.7. Ports, switches, and LED on the HS3 inverter Callout Silkscreen Description PV1 (+, -), PV2 (+, -) PV input ports BAT (+, -) BAT+ and BAT- ports Used for parallelling connection.
Page 24 HS3 Series COMM Communication port BACK-UP Backup load port GRID Grid port Grounding port Table 2.1. Description of the HS3 ports, switches, and LED 2.5. LED Indicators on the HS3 Inverter Figure 2.8. HS3 inverter LED LED indicator Status Description The inverter is powered off.
Page 25 HS3 Series Solid on The battery is discharging. On 1s, off 3s The battery is charging. On 1s, off 1s The battery is not working properly. Battery The battery is disconnected or inactive. Solid on The grid is connected and working properly.
Page 26 HS3 Series 2.6. Datasheet 2.6.1. System Notes: W=Wi-Fi G=4G B=Basic model P=Professional model IE=Ireland (This model is applicable to Ireland ONLY.) BE=Belgium (This model is applicable to Belgium ONLY.) HS3-5K-S2-(W, G)- HS3-6K-S2-(W, G)- Model HS3-3K-S2-(W, HS3-3.6K-S2-(W, HS3-4K-S2-(W, HS3-4.6K-S2-(W, (B, P)
Page 27 HS3 Series HS3-5K-S2-(W, G)- HS3-6K-S2-(W, G)- Model HS3-3K-S2-(W, HS3-3.6K-S2-(W, HS3-4K-S2-(W, HS3-4.6K-S2-(W, (B, P) HS3-5K- (B, P) HS3-6K- Parameter G)-(B, P) G)-(B, P) G)-(B, P) G)-(B, P) S2-(W, G)-(B, P) S2-(W, G)-(B, P) Quantity of battery packs connecting to one inverter: 1 to 8 Scalability Note: A maximum of 3 battery packs can be installed in one stack.
Page 28 HS3 Series HS3-5K-S2-(W, G)- HS3-6K-S2-(W, G)- Model HS3-3K-S2-(W, HS3-3.6K-S2-(W, HS3-4K-S2-(W, HS3-4.6K-S2-(W, (B, P) HS3-5K- (B, P) HS3-6K- Parameter G)-(B, P) G)-(B, P) G)-(B, P) G)-(B, P) S2-(W, G)-(B, P) S2-(W, G)-(B, P) Current to the Array [A] AC Output [Back-up] ⚫...
Page 29 HS3 Series HS3-5K-S2-(W, G)- HS3-6K-S2-(W, G)- Model HS3-3K-S2-(W, HS3-3.6K-S2-(W, HS3-4K-S2-(W, HS3-4.6K-S2-(W, (B, P) HS3-5K- (B, P) HS3-6K- Parameter G)-(B, P) G)-(B, P) G)-(B, P) G)-(B, P) S2-(W, G)-(B, P) S2-(W, G)-(B, P) ⚫ Wi-Fi and Ethernet (W models using the AIO3 module) ⚫...
Page 30 HS3 Series 2.6.2. Battery Pack Model BU3-5.0-(TV1, TV2), BU3-5.0-(TV1, TV2)-PRO, Parameter BU3-5.0-(TV1, TV2)-BASE BU3-5.0-(TV1, TV2)-PRO-BASE Rated Capacity [Ah] Rated Energy [kWh] Usable Energy [kWh] ⚫ With the base: 420*695*170 Dimension (H*W*D) [mm] ⚫ Without the base: 370*695*170 ⚫ With the base: 53 Weight [kg] ⚫...
Page 31 HS3 Series 2.6.4. Charger Model CU2-7.4K-S-I Parameter Input Power supply 1P+N+PE Rated Voltage [V AC] 230, ± 20% Rated Current [A] Frequency [Hz] 50/60 Output Output Voltage [V AC] 230, ± 20% Max. Current [A] Rated Output Power [kW] Power Consumption (standby) [W]...
Page 32 HS3 Series ⚫ EN IEC 61851-21-2: 2021 EN 61000-6-1: 2019 ⚫ ⚫ EN 61000-6-3: 2021 ⚫ EN 300 328 V2.2.2:2019 EN 301 489-1 V2.2.3:2019 ⚫ ⚫ EN 301 489-3 V2.1.1:2019 EN 301 489-17 V3.2.0:2017 ⚫ Warranty Refer to the warranty policy.
Page 33 HS3 Series...
Page 34 HS3 Series TRANSPORTATION AND STORAGE...
Page 35 HS3 Series 3.1. Transportation DANGER Load or unload batteries with caution. Otherwise, the batteries may be short-circuited or damaged (such as leakage and crack), catch fire, or explode. ⚫ Batteries have passed the test of UN38.3. This product meets the transportation requirements for dangerous goods for lithium batteries.
Page 36 The battery cannot be disposed of as household refuse. When the service life of the battery reaches to the limit, it is not required to return it to the dealer or SAJ, but it must be recycled to the special...
Page 37 HS3 Series...
Page 38 HS3 Series INSTALLATION...
Page 39 HS3 Series 4.1. Precautions For safety, be sure to read all the safety instructions carefully prior to any works and observe the appropriate rules and regulations of the country or region where you installed the energy storage system. DANGER •...
Page 40 HS3 Series ⚫ Keep the device from water sources such as taps, sewer pipes and sprinklers to prevent water seepage. ⚫ The product is to be installed in a high traffic area where the fault is likely to be seen.
Page 41 HS3 Series In some restricted conditions, the allowable backward-tilted angle must not be greater than 3 degrees, and the allowable side-tilted angle must not be greater than 2 degrees. Figure 4.3. Installation angle Choose a solid and smooth wall to ensure that the inverter can be installed securely on the wall.
Page 42 HS3 Series 4.3. Preparing Installation Tools The tools illustrations are for your reference. Installation tools include but are not limited to the following recommended ones. Use other auxiliary tools based on site requirements. Multimeter Measurement Utility knife Marker Measuring tape...
Page 43 4.4. Unpacking 4.4.1. Checking the Outer Packing Although SAJ’s products have thoroughly tested and checked before delivery, there is possibility that the products may suffer damages during transportation. Check the outer packing package for any damage, such as holes and cracks.
Page 44 HS3 Series Notes: ⚫ The printed documents include a warranty card, a Quick Guide, and a Configuration Instructions. This meter kit contains the following items: ⚫ Communication cable with an RJ45 connector *1 Current transformer *1 Smart meter *1 ◼...
Page 45 HS3 Series M5*14 screw *4 ◼ Package of type B BU3 battery pack Type B battery pack has two mounting ears on the rear cover. Battery pack with a base (BU3-5.0-(TV1, TV2)-BASE or BU3-5.0-(TV1, TV2)-PRO-BASE) ⚫ M6*50 screw *2 Battery module *1...
Page 46 HS3 Series ◼ Wall-mounting bracket This is an optional package, depending on your system configuration. M5*14 screw *2 Mounting bracket * M12*100 expansion bolt *6 ◼ BC3 Battery Junction Box Package This is an optional package, depending on your system configuration.
Page 47 HS3 Series M5*14 screw *2 4.5. Installation Depending on your order, you will receive either type A or type B battery pack. Type A: With two holes on left and right sides Type B: With two mounting ears on the rear cover Depending on the battery pack type and mounting manner, choose the following installation procedure: Section 4.5.1 "Type A battery pack: ground mounting manner"...
Page 48 HS3 Series Figure 4.6. Marking and drilling holes on the wall...
Page 49 HS3 Series Use two M5*14 screws to install two locking brackets on the left and right sides of the battery pack. On the desired installation site, place the base battery on the floor. Make sure that: The left and right battery bases are aligned with the vertical black lines on the cardboard.
Page 50 HS3 Series On the left and right upper sides of the battery pack, align the locking brackets to the drill holes and install M6*50 screws to secure the locking brackets to the wall. Note: If the battery is installed outdoors, it is suggested to remove the cardboard which is not waterproof.
Page 51 HS3 Series Step 2. (Optional) Install other batteries (BU3-5.0-(TV1, TV2) or BU3-5.0-(TV1, TV2)-PRO). Note: In one stack, up to three batteries are supported. Use two M5*14 screws to install two locking brackets on the left and right sides of the battery pack.
Page 52 HS3 Series On the left and right upper sides of the battery pack, align the locking brackets to the drilled holes and install the gaskets and M6*50 screws to secure the battery pack to the wall. On the left and right bottom sides of the battery pack: Install two M5*14 screws to secure two batteries.
Page 53 HS3 Series (Optional) If needed, repeat steps a and b to install the third battery. M6*50 M6*50 5 N· m 5 N· m M5*14 M5*14 2.5 N· m 2.5 N· m Figure 4.11. Installing the third battery...
Page 54 HS3 Series Step 3. (Optional) Install the charger (CU2-7.4K-S-I). Get the holster from the charger package. Install the holster onto the right side of the charger. Place the charger onto the battery. Push it downwards. Install M5*14 screws on both lower sides of the charger to secure the charger to the battery.
Page 55 Install the holster on the wall by using three M4*32 screws. Note: The holster is used to secure the charger cable. You can connect the cable after all installation is completed. It is recommended that you purchase the cable from SAJ. M4*32 5 N·...
Page 56 HS3 Series Step 4. Install the inverter (HS3- k-S2-(W, G)-(B, P) or HS3-xK-S2-(W, G)-(B, P)-(BE, IE)). (Optional) If you have installed a charger, loosen the screws on the inverter, and remove the port cover, as shown below: Place the inverter onto the battery or charger (if available) and push it downwards. Install screws on both lower sides of the inverter to secure the inverter to the beneath device (battery or charger;...
Page 57 HS3 Series Installation completion view Single stack: supporting 1 to 3 batteries Example of 3 batteries: Inverter + charger + batteries Inverter + batteries Figure 4.16. Completion view of a single stack 4.5.2. Type B battery pack: ground mounting manner Before you start Make sure that the ground should be flat and no inclination.
Page 58 HS3 Series Figure 4.17. Marking and drilling holes on the wall...
Page 59 HS3 Series Use two M5*14 screws to install two locking brackets to the mounting ears on the top of the battery pack. On the desired installation site, place the base battery on the floor. Make sure that: The left and right battery bases are aligned with the vertical black lines on the cardboard.
Page 60 HS3 Series On the top of the battery pack, align the locking brackets to the drilled holes and install M6*50 screws to secure the locking brackets to the wall. Note: If the battery is installed outdoors, it is suggested to remove the cardboard which is not waterproof.
Page 61 HS3 Series Step 2. (Optional) Install other batteries (BU3-5.0-(TV1, TV2) or BU3-5.0-(TV1, TV2)-PRO). Note: In one stack, up to three batteries are supported. Use two M5*14 screws to install two locking brackets to the mounting ears on the top of the battery pack.
Page 62 HS3 Series On the top of the battery pack, align the locking brackets to the drilled holes and install the gaskets and M6*50 screws to secure the battery pack to the wall. On the left and right bottom sides of the battery pack, install M5*14 screws to secure two batteries.
Page 63 HS3 Series (Optional) If needed, repeat steps a and b to install the third battery. Australia only: Install the metal grounding plate and secure it by installing two M4*12 screws. M6*50 5 N· m M5*14 2.5 N· m M5*14 2.5 N· m M4*12 1.2 N·...
Page 64 HS3 Series Step 3. (Optional) Install the charger (CU2-7.4K-S-I). Get the holster from the charger package. Install the holster onto the right side of the charger. Place the charger onto the battery. Push it downwards. On the left and right bottom sides, install M5*14 screws to secure the charger to the battery.
Page 65 Install the holster on the wall by using three M4*32 screws. Note: The holster is used to the charger cable. You can connect the cable after all installation is completed. It is recommended that you purchase the cable from SAJ. Figure 4.24.
Page 66 HS3 Series Step 4. Install the inverter (HS3- k-S2-(W, G)-(B, P) or HS3-xK-S2-(W, G)-(B, P)-(BE, IE)). (Optional) If you have installed a charger, loosen the screws on the inverter, and remove the port cover, as shown below: Place the inverter onto the battery or charger (if available) and push it downwards. On the left and right bottom sides of the inverter, install M5*14 screws to secure the inverter to the beneath device.
Page 67 HS3 Series Installation completion view Single stack: supporting 1 to 3 batteries Example of 3 batteries: Inverter + charger + batteries Inverter + batteries Figure 4.27. Completion view of a single stack...
Page 68 HS3 Series 4.5.3. Type B Battery Pack: wall mounting manner Before you start Make sure that the wall can bear the weight of the inverter and accessories. Procedure Step 1. Install the wall-mounting bracket. Place the mounting bracket onto the wall. Mark six holes. Remove the bracket.
Page 69 HS3 Series Install the mounting bracket on to the wall. M12*100 45 N· m Figure 4.30. Installing the mounting bracket Step 1. Install the base battery (BU3-5.0-(TV1, TV2)-BASE or BU3-5.0-(TV1, TV2)-PRO-BASE). Get the cardboard from the base battery package. Place the cardboard onto the wall and align the vertical lines on the cardboard with the bracket edges.
Page 70 HS3 Series Drill six holes (8mm in diameter and 55mm in depth) on the marked positions on the cardboard. Install the provided expansion bolts into the drilled holes. Figure 4.32. Drilling holes Figure 4.33. Installing expansion bolts...
Page 71 HS3 Series Use two M5*14 screws to install two locking brackets to the mounting ears on the top of the battery pack. Place the base battery onto the floor. Make sure that: The battery feet are aligned with the vertical black line on the cardboard.
Page 72 HS3 Series On the top of the battery pack, align the locking brackets to the drilled holes and install M6*50 screws to secure the locking brackets to the wall. Secure battery to the bracket by tightening two M6*14 screws. Note: If the battery is installed outdoors, it is suggested to remove the cardboard which is not waterproof.
Page 73 HS3 Series Step 2. Install other batteries (BU3-5.0-(TV1, TV2) or BU3-5.0-(TV1, TV2)-PRO). Note: In one stack, up to three batteries are supported. Use two M5*14 screws to install two locking brackets to the mounting ears on the top of the battery pack.
Page 74 HS3 Series On the top of the battery pack, align the locking brackets to the drilled holes and install the gaskets and M6*50 screws to secure the battery pack to the wall. On the left and right bottom sides of the battery pack, install M5*14 screws to secure two batteries.
Page 75 HS3 Series (Optional) If needed, repeat steps a and b to install the third battery. Australia only: Install the metal grounding plate and secure it by installing two M4*12 screws. M6*50 5 N· m M5*14 2.5 N· m M5*14 2.5 N· m M4*12 1.2 N·...
Page 76 HS3 Series Step 3. (Optional) Install the charger (CU2-7.4K-S-I). Get the holster from the charger package. Install the holster onto the right side of the charger. Place the charger onto the battery. Push it downwards. On the left and right bottom sides of the battery pack, install M5*14 screws to secure the charger to the battery.
Page 77 Install the holster on the wall by using three M4*32 screws. Note: The holster is used to secure the charger cable. It is recommended that you purchase the cable from SAJ and connect the cable after all devices are installed. M4*32 5 N·...
Page 78 HS3 Series Step 4. Install the inverter (HS3- k-S2-W-B, HS3- K-S2-W-P, HS3- k-S2-G-B, or HS3- K-S2-G-P). Place the inverter onto the battery or charger (if available) and push it downwards. On the left and right bottom sides of the battery pack, install M5*14 screws to secure the inverter to the beneath device (battery or charger;...
Page 79 HS3 Series Installation completion view Single stack: supporting 1 to 3 batteries Example of 3 batteries: Inverter + charger + batteries Inverter + batteries Figure 4.43. Completion view of a single stack 4.5.4. Installation of Multiple Battery Stacks (Optional) About this task One inverter supports up to eight batteries;...
Page 80 HS3 Series It is recommended that the batteries be assembled in different stacks as follows: Quantity of batteries supported by one inverter Quantity of battery stacks Quantity of batteries in each stack 1, 2, or 3 batteries 4 batteries 2, 2...
Page 81 HS3 Series Step 2. Depending on the battery type, perform as follows: ⚫ Type A battery pack: Install screws on both lower sides of the junction box to secure the junction box to the beneath battery. M5*14 2.5 N· m Figure 4.45.
Page 82 HS3 Series Type B battery pack: Type B battery pack: Install screws on both lower sides of the junction ⚫ box to secure the junction box to the beneath battery. Australia only: Install the metal grounding plate and secure it by installing two M4*12 screws M5*14 2.5 N·...
Page 83 HS3 Series Installation completion view Multiple battery stacks: supporting four to eight batteries; distance between each stack is 0.5 meters. Example of 8 batteries: Figure 4.46. Completion view of three battery stacks...
Page 84 HS3 Series ELECTRICAL CONNECTION...
Page 85 HS3 Series 5.1. Safety Instructions Electrical connection must only be operated on by professional technicians. Operators must be aware that the inverter is a bi-power supply equipment. Before connection, necessary protective equipment must be employed by technicians including insulating gloves, insulating shoes, and safety helmet.
Page 86 HS3 Series Figure 5.2. After the AC-side cover is opened 5.2.2. Connecting the Grounding Cable About this task This additional grounding cable must be connected before other electrical connection. You can connect the grounding cable to the grounding point on either AC-side or DC side. Here takes the grounding point on the AC-side as an example.
Page 87 HS3 Series Step 2. Remove the M4*10 screw from the grounding port. Connect and secure the grounding cable, as shown below: Figure 5.4. Connecting the additional grounding cable 5.2.3. (Optional) Installing the SIM Card Only the 4G model provides the SIM card slot.
Page 88 HS3 Series Figure 5.6. Inserting the SIM card 5.2.4. (Optional) Assembling the LAN Electrical Connection About this task Only the W (Wi-Fi) model provides the LAN port. If you choose to use Wi-Fi connection manner or has an EMS connected in the ESS, no need to connect the LAN cable.
Page 89 HS3 Series Figure 5.7. Preparing the LAN cable Step 3. Connect the LAN cable from the LAN port on the inverter to the router. Figure 5.8. Connecting the LAN cable...
Page 90 Step 2. Use a standard RJ45 cable. Insert the cable through the cable fastener as shown below. Assembly the cable fastener. Figure 5.9. Preparing the EMS cable Step 3. Connect the cable from the EMS port on the inverter to the LAN port on SAJ eManager (EMS). Figure 5.10. Connecting the EMS cable...
Page 91 5.2.8. Connecting the Smart Meter To buy a smart meter, contact SAJ for more details. By using a SAJ-recommended smart meter, many functions can be implemented, such as the export limitation function. Connect the smart meter as shown in section 5.6 “System Connection Diagram”.
Page 92 HS3 Series Cable type Conductor cross-sectional area of cables Cable diameter (with Conductor material Range Recommended value insulation) One three-wire cable 10–13.3 mm² or 7–6 AWG 10 mm² or 6 AWG Range: 13–17.5 mm Copper Range: 6.5–8.5 mm Three separated cables 10 mm²...
Page 93 HS3 Series Step 4. Use a flathead screwdriver to remove the dustproof covers from the GRID and BACK-UP ports. Then, connect the cables to the GRID and BACKUP ports on the inverter. Figure 5.12. Connecting the grid and backup load cables 5.2.10.
Page 94 HS3 Series ① ② ① ③ ① Figure 5.13. Disassembling the 24-pin communication cable connector Step 2. Prepare cables. ⚫ Meter communication: Use the provided communication cable kit. It contains a communication cable with an RJ45 port and two assembled terminals and cable fastener parts.
Page 95 HS3 Series Figure 5.14. Installing the insulated crimp terminals on the cable ends Step 3. Insert all communication cables through the nut, seals, and body of the connector. Figure 5.15. Inserting the cables through the connector Step 4. Locate the ports and terminals on the connection terminal block according to their silkscreens.
Page 96 HS3 Series 8: NC Terminals DO1+ Dry output 1 DO1- Dry output 1 DO2+ Dry output 2 DO2- Dry output 2 RS485-A For external RS485 (with a 120 Ω resistor) communication RS485-B MET-A For meter communication (with a 120 Ω resistor)
Page 97 HS3 Series ⑤ ② ④ ① ③ Figure 5.16. Assembling the connector Step 6. 、Connect the assembled communication terminal connector to the COMM port on the inverter. Figure 5.17. Connecting the connector to the inverter...
Page 98 HS3 Series Step 7. Connect the other end of the cables to external devices, such as the meter. Note: For meter connection, use the communication cable (A) provided in the meter kit package. Connect the RJ45 connector on one end to the RJ45 port of the meter communication cable (B) that you have just connected to MET_A and MET_B on the communication terminal connector.
Page 99 HS3 Series 5.2.11. Closing the AC-side Cover Push the cover downwards. Use a screwdriver to tighten the screw to lock the cover securely. Figure 5.19. Closing the AC-side cover Figure 5.20. Securing the screw...
Page 100 HS3 Series 5.3. Assembling the DC-side Connection 5.3.1. Opening the DC-side Cover Loosen the screw that locks the cover. Then, lift the cover upwards. Figure 5.21. Opening the DC-side cover Figure 5.22. After the DC-side cover is opened...
Page 101 HS3 Series 5.3.2. Connecting the PV Cables About this task Read the safety instructions first before operations. ⚫ WARNING · Dangerous to life due to electric shock when live components or DC cables are touched. · The PV panel string will produce lethal high voltage when exposed to sunlight. Touching live DC cables results in death or lethal injures.
Page 102 HS3 Series ⚫ Verify that the DC switch on the inverter is in OFF position to avoid short circuit caused by maloperations. Figure 5.24. DC switch in OFF position (For Australia) To comply with local regulations and for further safety consideration, use a reliable tool (such as a lock with a key) to lock the switch, so that others cannot unlock it easily.
Page 103 HS3 Series Step 3. Insert the assembled cable ends into the blue positive and negative connectors. Gently pull the cables backwards to ensure firm connection. Figure 5.27. Assembling the positive and negative cables Step 4. Tighten the lock screws on the positive and negative cable connectors.
Page 104 HS3 Series Figure 5.29. Connecting the PV cables 5.3.3. (Optional) Connecting Cables between Multiple Battery Stacks About this task This task is only applicable to the scenario in which four to eight batteries are connected to one inverter. On top of the first stack, an inverter is installed; while in the top of other stacks, a battery junction box has been installed on top of the stack.
Page 105 HS3 Series Procedure Step 1. Prepare and connect the grounding cable to the battery junction box.
Page 106 BMS CAN port on the battery junction box on the left stack. ⚫ The provided cables have been assembled with connectors. In some special cases, if you need to use your own cables, contact SAJ for technical support. Taking eight batteries connecting to one inverter as an example: BAT+ BAT-...
Page 107 HS3 Series 5.3.4. Closing the DC-side Cover Push the cover downwards. Use a screwdriver to tighten the screw to lock the cover securely. Figure 5.31. Closing the DC-side cover 5.4. Earth Fault Alarm This inverter complies with IEC 62109-2 clause 13.9 for earth fault alarm monitoring. If an earth fault alarm occurs, the ring light on the inverter LED panel will be lit up in red and an error code <31>...
Page 108 HS3 Series 5.5. System Connection For Australia and New Zealand, the system connection is as below: Notes: For safety, the neutral cable of AC (grid) and backup side must be connected together. ⚫ DO NOT connect the PE terminal of the BACKUP side.
Page 109 HS3 Series The system connection for the grid system without special requirements is as below: Note: The backup PE line and earthing bar must be grounded properly. Otherwise, the backup function may be inactive during blackout. Figure 5.33. System connection in other countries and regions...
Page 110 HS3 Series 5.6. System Connection Diagram If the length of the RS485 cable between the inverter and the meter exceeds 20 meters, connect a 120Ω resistor to ports 24 and 25 on the meter. One HS3 in the single-phase grid...
Page 111 HS3 Series ⚫ One HS3 in the three-phase grid Configuration Instructions ⚫ For other scenarios, refer to Chapter 3 “System Connection: Single-phase hybrid inverter” in the Multiple HS3 (parallelling scenario) One HS3 working with a solar inverter (AC coupling scenario)
Page 112 HS3 Series STARTUP AND SHUTDOWN...
Page 113 HS3 Series 6.1. Startup Step 1. (Optional) If there are multiple battery stacks, turn on the battery switch on the right side of the battery junction box. Step 2. On the left side of the inverter, perform as follows: Turn on BATTERY SWITCH.
Page 114 HS3 Series COMMISSIONING...
Page 115 HS3 Series 7.1. About the Elekeeper App The Elekeeper App can be used for both nearby and remote monitoring. Depending on the communication module used, it supports Bluetooth/4G or Bluetooth/Wi-Fi to communicate with your energy storage system (ESS). 7.2. Downloading the App On your mobile phone, search for “Elekeeper”...
Page 116 HS3 Series TROUBLESHOOTING...
Page 117 HS3 Series For any errors reported as below, contact the after-sales for service support. The operations and maintenance must be performed by authorized technicians. Error code Error message Master Relay Error Master EEPROM Error Master Temperature High Error Master Temperature Low Error Master Lost Communication M<->S...
Page 118 HS3 Series Error code Error message Master Grid NE Voltage Error Master Fan1 Error Lost Communication between DSP and PowerMeter Lost Communication between M<->S Lost Communication between inverter and Grid Meter HMI EEPROM Error HMI RTC Error BMS Lost.Conn Warn AFCI Lost Com.Err...
Page 119 HS3 Series Error code Error message Master Battery SoftConnet TimeOut Master Output OverLoad Master Battery Open Circuit Error Master Battery Discharge Voltage Low BMS Internal Communication Error Bat Sequence Error Discharge Over Current Protect Charge Over Current Protect Module Under Voltage Protect...
Page 120 HS3 Series Error code Error message The system is locked FUSE error protection Battery Port Voltage Abnormal Protection Heating film overtemperature protection Abnormal temperature increases Gen Start or Stop Error Battery Software Overvoltage Fault Battery Software Undervoltage Fault Battery Discharge Software Overcurrent Fault...
Page 121 HS3 Series Error code Error message Heatsink High Temperature Fault Heatsink Low Temperature Fault PCB High Temperature Fault PCB Low Temperature Fault Fan Fault Heating Film Fault Inverter CAN communication failure Battery pack internal CAN communication fault Memory fault Button failure fault...
Page 122 HS3 Series Error code Error message cp exception, cp lower than 2V Connector lock exception Connector current exception DC residual current exception C...
Page 123 HS3 Series...
Page 124 HS3 Series APPENDIX...
Page 125 Check the product warranty conditions and terms on the SAJ website: https://www.saj-electric.com/ 9.3. Contacting Support Guangzhou Sanjing Electric Co., Ltd. Address: SAJ Innovation Park, No.9, Lizhishan Road, Guangzhou Science City, Guangdong, P.R.China. Postcode: 510663 Website: https://www.saj-electric.com/ Technical Support & Service...
Page 126 HS3 Series SAJ is the trademark of Sanjing.
Page 127 HS3 Series...
Page 128 HS3 Series GUANGZHOU SANJING ELECTRIC CO.,LTD Tel: (86)20 66608588 Fax: (86)20 66608589 Web: www.saj-electric.com Add: SAJ Innovation Park,No.9, Lizhishan Road, Science City, Guangzhou High-tech Zone , Guangdong, P.R.China V0.0...

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