SAJ H2 User Manual

Hybrid solar inverter

Hide thumbs Also See for H2:

Configuration instructions (64 pages)

Manual (59 pages)

User manual (41 pages)

page of 92

/ 92
Bookmarks

Quick Links

Download this manual

H2 series

HYBRID SOLAR INVERTER

USER MANUAL

H2-(5K-7.6K)-LS3-US

H2-(9.6K-11.4K)-LS4-US

Need help?

Do you have a question about the H2 and is the answer not in the manual?

Questions and answers

Summary of Contents for SAJ H2

Page 1 H2 series HYBRID SOLAR INVERTER USER MANUAL H2-(5K-7.6K)-LS3-US H2-(9.6K-11.4K)-LS4-US...
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 https://www.saj-electric.com/...
Page 3 H2 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. Safety instructions ....................................... 4 1.3.
Page 4 H2 series 4.1. Precautions ......................................... 22 4.2. Check the system topology diagram ..............................22 4.3. Determine the installation site ................................24 4.3.1. Installation environment requirements............................24 4.3.2. Installation location requirements ..............................24 4.4. Prepare installation tools ..................................26 4.5. Unpacking ........................................27 4.5.1.
Page 5 H2 series 6.1. Startup ......................................... 58 6.2. Shutdown ........................................58 6.3. Emergency shutdown ....................................59 6.4. Restart after emergency shutdown ..............................59 7. Commissioning ..............................................61 7.1. Download the App ....................................62 7.2. Log in to the App....................................... 62 7.3.
Page 6 H2 series SAFETY PRECAUTIONS...
Page 7 Failure to follow any of the instructions or warnings in this document can result in device damage, potentially rendering it inoperable; or even causes electrical shock, serious injury, or death. SAJ shall take no responsibility for any personal injuries or property damage caused by improper use.
Page 8 H2 series CAUTION Indicates a hazardous condition which, if not avoided, can result in minor or moderate injury. NOTICE Indicates a situation that can result in potential damage, if not avoided. 1.2.2. Symbol explanation Symbol Description Danger: Electrical shock hazard This device is directly connected to public grid, thus all work to the battery shall only be carried out by qualified personnel.
Page 9 H2 series CAUTION: Risk of electric shock from energy stored in capacitor. Do not remove cover until 5 minutes after disconnecting all sources of supply CE mark Equipment with the CE mark fulfills the requirements of the Low Voltage Directive and Electro Magnetic Compatibility.
Page 10 WARNING • Any unauthorized actions including modification of product functionality of any form may cause lethal hazard to the operator, third parties, the units or their property. SAJ is not responsible for the loss and these warranty claims. • Do not touch non-insulated parts or cables.
Page 11 H2 series 1.3. Safe handling Only qualified electricians who have read and fully understood all safety regulations in this manual ⚫ can install, maintain, and repair the inverter. When the inverter is working, do not touch the internal components or cables to avoid electric shock.
Page 12 H2 series PRODUCT INFORMATION...
Page 13 H2 series 2.1. General introduction The H2 series low-voltage inverter is a transformer-less hybrid solar inverter, which is a key component of a complete energy storage system. The inverter provides the maximum power point tracking (MPPT), battery charging/discharging circuit and full-bridge inverting circuit.
Page 14 Model description LS3 - LS4 - H2: inverter series K: rated power of the inverter. For example, 5K indicates the rated power of the inverter is 5 kW. : Low voltage with 3 MPPT : Low voltage with 4 MPPT US: This model is applicable to the United States.
Page 15 H2 series 2.4. Knockout holes, switch, and button Figure 2.2. Knockout holes, switch, and button Callout Silkscreen Description DC Switch DC switch 4G/WIFI For connecting the communication module For connecting the PV cables For connecting the communication cables BATTERY For connecting the battery cables...
Page 16 H2 series Figure 2.3. Dimension of knockout holes Knockout hole Dimension Knockout hole Dimension φ50.3 mm (φ1.98") φ34.5mm (φ1.358") BATTERY φ50.3 mm (φ1.98") φ50.3 mm (φ1.98") LOAD φ50.3 mm (φ1.98") GRID φ50.3 mm (φ1.98") Table 2.2. Dimension of knockout holes...
Page 17 H2 series 2.5. Electrical terminals in the junction box Figure 2.4. Electrical terminals in the junction box Callout Description Callout Description PV1–PV4 BAT (BAT+ and BAT-) LOAD (L1 and L2) GRID (L1 and L2) Table 2.3. Description of electrical terminals...
Page 18 H2 series 2.6. LED indicators Figure 2.5. LED indicators LED indicator Status Description The inverter is powered off. Breathing 6s The inverter is in initialization or standby state. Solid on The inverter is working properly. Breathing 6s The inverter is upgrading.
Page 19 H2 series On 1s, off 3s No electricity is imported from or exported to the grid. The inverter is disconnected from the grid. Solid on The battery is in discharging status. On 1s, off 1s The battery is in charging status.
Page 20 H2 series 2.7. Datasheet Model H2-5K-LS3-US H2-7.6K-LS3-US H2-9.6K-LS4-US H2-11.4K-LS4-US PV String Input Max. PV array power [Wp]@STC 7500 11400 14400 17100 Max. DC voltage[V] MPPT voltage range[V] 90–510 Nominal DC voltage[V] Start voltage [V] Min. input voltage [V] Max. input current[A]...
Page 21 H2 series Model H2-5K-LS3-US H2-7.6K-LS3-US H2-9.6K-LS4-US H2-11.4K-LS4-US Rated output frequency and range ⚫ 50 Hz: 47–53 [Hz] ⚫ 60 Hz: 57–63 Power factor [cosφ] 0.8 leading–0.8 lagging Total harmonic distortion [THDi] < 3% AC Output [Back-up Mode] Rated AC power [W]@208 V AC...
Page 22 H2 series Model H2-5K-LS3-US H2-7.6K-LS3-US H2-9.6K-LS4-US H2-11.4K-LS4-US Grid monitoring Integrated AC output short circuit protection Integrated AC grounding detection Integrated DC surge protection Type II AC surge protection Type II Island protection monitoring Integrated AFCI Integrated Integrated Interface Display LED/App (via Bluetooth)
Page 23 H2 series...
Page 24 H2 series TRANSPORTATION AND STORAGE...
Page 25 H2 series 3.1. Transportation The transportation service provider must be qualified to transport dangerous goods. ⚫ ⚫ Keep less than 4 cartons of inverter in one stack. 3.2. Storage ⚫ Store it in a dry and ventilated environment and keep it away from heat sources.
Page 26 H2 series INSTALLATION...
Page 27 H2 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 28 H2 series The following installation examples should be avoided. Any damage caused will not be covered by the warranty policy. PV array Single PV string can not be connected to multiple inverters. Generator On-Grid Backup Backup LOAD terminals can not be connected to any AC generator.
Page 29 H2 series 4.3. Determine the installation site Read the following sections to cautiously determine the installation site. The safety regulations vary in different countries and regions. Follow local safety regulations. 4.3.1. Installation environment requirements Keep away from sunlight Keep dry...
Page 30 H2 series ⚫ Install the device vertically. Do not install it forward-tilted, horizontally or upside down. The maximum allowable backward-tilted angle is 15 degrees. 15° Figure 4.4. Installation limitations ⚫ Choose a solid and smooth wall to ensure that the inverter can be installed securely on the wall.
Page 31 H2 series 4.4. Prepare 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 32 4.5. Unpacking 4.5.1. Check 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 33 H2 series 4.6. Install the inverter Before you start Make sure that the wall can bear the weight of the inverter and accessories. Procedure Step 1. Use a positioning jig to mark eight holes on the wall according to the following figure. Then, drill eight holes on the wall.
Page 34 H2 series Figure 4.7. Eight holes for installing the mounting bracket...
Page 35 H2 series Step 2. Use six M6*50 screws to secure the mounting plate to the wall. Figure 4.8. Inserting eight expansion tubes into the holes...
Page 36 H2 series Step 3. Mount the inverter onto the mounting plate. Insert two M6*50 screws (1.2-1.5 N· m) on each bottom side of the inverter to secure it to the wall. Figure 4.9. Securing the bottom locking brackets Step 4. If required, install metal conduits to the knockout holes at the bottom of the inverter.
Page 37 H2 series...
Page 38 H2 series ELECTRICAL CONNECTION...
Page 39 H2 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 40 H2 series Procedure Step 1. Assemble the cable and OT/DT terminal. Figure 5.1. Preparing the grounding cable Heat shrink tube OT/DT terminal Step 2. Loosen the screw and connect the grounding cable. Figure 5.2. Connecting the grounding cable...
Page 41 H2 series 5.3. Open the junction box of the inverter Step 1. Use the provided key to open the two locks on the right side of the inverter. Then, lift the cover leftwards. Figure 5.3. Opening the junction box...
Page 42 H2 series Step 2. Loosen the four screws to unlock the internal plate. Lift the plate outwards. Figure 5.4. Removing the internal plate...
Page 43 H2 series 5.4. Assemble the AC-side electrical connection About this task For safety operation and regulation compliance, it is required to install a circuit breaker between the grid and the inverter. Figure 5.5. AC grid Choose the breaker and cables according to the following table.
Page 44 H2 series WARNING • Risk of personal injury due to electric shock! • Ensure that the equipment is powered off before performing wiring operations. • Improper wiring of AC conductors will result in risk of electrical failure or equipment damage. Please ensure that all connections are made correctly in accordance with the instructions in this document and in accordance with local wiring codes and regulations before applying power to the unit.
Page 45 H2 series Step 2. Use a flathead tool to remove the knockout hole fillers. (Inserting into the hole and anti-clock rotation) Figure 5.7. Removing the knockout hole fillers Step 3. According to the silkscreens, insert the grid cables through the corresponding knockout hole and insert them to corresponding terminals L1, L2, L3, N, and PE.
Page 46 H2 series Figure 5.9. Connecting the load cables Figure 5.10. Connecting the generator cables...
Page 47 H2 series 5.5. Connect the battery to the Inverter About this task For battery details, refer to battery product documentation. CAUTION: Do NOT connect the positive port to the negative port on one battery. This will short-circuit this battery, causing serious battery damage.
Page 48 H2 series Step 2. Insert the cables through the BATTERY knockout hole and connect them to the battery terminals in the junction box. Figure 5.12. Connecting the battery cables 5.6. Assemble the PV-side electrical connection Step 1. Strip off the insulation (20-mm/0.79-inch length) of the cable ends. User cable ferrules if the cable is of multi-strand type.
Page 49 H2 series If needed, you can install a terminal on the cable end, as shown below: Cable Terminal Figure 5.13. Putting terminals on the cable ends Step 2. Ensure that the DC switch on the left side of the inverter is in OFF position.
Page 50 H2 series Step 3. Insert the PV cables through the PV knockout hole and connect them to the PV terminals in the junction box. Figure 5.15. Connecting the cables to PV1 and PV2 Figure 5.16. Connecting the cables to PV3 and PV4...
Page 51 H2 series 5.7. Assemble the communication connection 5.7.1. Install the communication module About this task An RS232 USB communication port is provided at the bottom of the junction box. This port is used to connect the communication module, such as a Wi-Fi or AIO3 module.
Page 52 H2 series Figure 5.17. Connecting the communication module...
Page 53 H2 series 5.7.2. Connect the communication cable Connect one end of the network cable to the communication port on the BMS. Insert the other end of the network cable through the BATTERY knockout hole of the inverter and connect it to the BMS_CAN port.
Page 54 H2 series 5.8. Connect the CTs Connect the CT wires to pin 1, 2, 3, and 4 on the CN89 terminal in the junction box of the inverter. From the CT To the CN89 terminal pins in the inverter CT GRID-L1...
Page 55 H2 series 5.9. Install an external rapid shutdown switch About this task According to local safety regulations, an external rapid shutdown switch is required in case of emergency. After the switch is turned off, the system stops working immediately. Procedure Connect the wires of the external rapid shutdown switch to pins 11 and 12 on the CN89 terminal in the junction box of the inverter.
Page 56 H2 series 5.10. Close the junction box of the inverter Step 1. Align the holes on the internal plate with the holes in the junction box. Push the plate downwards. Tighten four screws to lock the plate. Figure 5.22. Installing the internal plate...
Page 57 Closing the cover of the junction box 5.11. Install an RSD (optional) The SAJ inverter provides RSD protection with a built-in transmitter (Transmitter-PLC-1P). To enable RSD protection, use an APsmart RSD-D model to connect to PV panels. For more details about the cable...
Page 58 H2 series 5.12. Connect 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 by referring to section 5.13.2 “Connection topology diagrams”.
Page 59 H2 series 5.13. System connection overview 5.13.1. Connection structure GRID BACKUP BMS_CAN RJ45 Figure 5.24. With a generator GRID GRID BACKUP Load BMS_CAN RJ45 Figure 5.25. Without a generator...
Page 60 H2 series 5.13.2. Connection topology diagrams Figure 5.26. Single-phase...
Page 61 H2 series Figure 5.27. Split-phase...
Page 62 H2 series STARTUP AND SHUTDOWN...
Page 63 H2 series 6.1. Startup Step 1. Open the junction box. Turn on the following breakers by pushing their handles upwards: Load breaker (optional, only when loads are connected) Battery breaker Step 2. Open the breaker on the grid side. Step 3. Turn on DC SWITCH on the left side of the inverter.
Page 64 H2 series 6.3. Emergency shutdown If there is an emergency, press the ON/OFF button on the right side of the inverter to shut down the system immediately. When the button is bounced, the system is shut down. 6.4. Restart after emergency shutdown...
Page 65 H2 series...
Page 66 H2 series COMMISSIONING...
Page 67 H2 series 7.1. Download the 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). On your mobile phone, search for “Elekeeper” in the App store and download the App.
Page 68 H2 series To apply for a new account, perform as follows: Tap the three-dot icon on the top right corner. Choose the language and network node based on your needs. Tap Register. Choose whether you are an owner or an installer or distributor.
Page 69 H2 series 7.3. Perform the initialization settings Prerequisite The Bluetooth function on your mobile phone is enabled. Procedure On the Service interface, select Remote Configuration. Tap Bluetooth and then Next. Tap your inverter according to the serial number (SN) of the communication module.
Page 70 H2 series Complete the initialization settings by following the instructions on the screen. Parallel connection settings Example:...
Page 71 H2 series If you have selected Parallel, the parallel connection parameters per you needs. Examples:...
Page 72 H2 series...
Page 73 H2 series Battery brand and settings Example:...
Page 74 H2 series Meter and system schematic Examples:...
Page 75 H2 series If you have set Wiring to CT, you need to set CT Transformation Ratio.
Page 76 H2 series Export limitation settings Example:...
Page 77 H2 series Working mode Self-Consumption Mode, Back-up Mode, Time-based mode, and Peak-shaving mode...
Page 78 H2 series In Time-based mode, set Other time slots work mode. In addition, if you have set Custom work policy to Two date range mode, configure Date Settings.
Page 79 H2 series Country and grid compliance Example:...
Page 80 H2 series Initialization completion After the initialization is completed, you can view the detailed device information on the displayed Device Info page. Tap the setting icon on the top right corner to enter the Local Connection page.
Page 81 H2 series 7.4. Configure the communication module About this task If you want to remotely monitor the energy storage system and view the device statistics (for example, when you are away from home), connect the communication module installed on the inverter to the network.
Page 82 H2 series 7.5. Create a plant On the Management page, tap the icon on the top right corner. Select Create Plant for Owner.
Page 83 H2 series Apply for an account for the end user.
Page 84 H2 series Configure the plant details.
Page 85 H2 series...
Page 86 H2 series TROUBLESHOOTING...
Page 87 H2 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 message Description Master Bus Voltage High The DC input voltage exceeds the allowed input limit of the inverter.
Page 88 H2 series Error message Description 2. Lithium battery is turned off. The load connected to the generator output is greater than the maximum Gen Output OverLoad output power. Battery Open Circuit Inverter cannot detect battery voltage. Master Battery Discharge Voltage Low Low voltage detected during battery discharge and overload.
Page 89 H2 series Error message Description power of the inverter. Output Volt DCV High The DC component of the AC output exceeds the limit range. Output Current Dci High The DC component of the AC output exceeds the limit range. Master No Grid Error The inverter cannot detect the grid voltage.
Page 90 H2 series APPENDIX...
Page 91 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 92 H2 series Tel: 86-20-66608588 Fax: 86-20-66608589 Web: www.saj-electric.com GUANGZHOU SANJING ELECTRIC CO., LTD Add: SAJ Innovation Park, No.9, Lizhishan Road, Science City, Guangzhou High-tech Zone, Guangdong, P.R.China V0.0...

This manual is also suitable for:

H2-5k-ls3-us H2-7.6k-ls3-us H2-9.6k-ls4-us H2-11.4k-ls4-us H2-12k-ls4-us