SAJ CH2 Series User Manual
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SAJ CH2 Series User Manual

SAJ CH2 Series User Manual

Hybrid solar inverter
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CH2 Series
CH2
Series
SAJ HYBRID SOLAR INVERTER
USER MANUAL
Tel: (86)20 66608588
Fax: (86)20 66608589
Web:
https://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
CH2-(29.9K-63K)-(T4-T6)
V0.1

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  • Page 1 CH2 Series Series SAJ HYBRID SOLAR INVERTER USER MANUAL Tel: (86)20 66608588 Fax: (86)20 66608589 Web: https://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 CH2-(29.9K-63K)-(T4-T6) V0.1...
  • Page 2 CH2 Series Preface Thank you for choosing SAJ products. We are pleased to provide you first-class products and exceptional service. This manual includes information for installation, operation, maintenance, trouble shooting and safety. Please follow the instructions of this manual so that we can ensure delivery of our professional guidance and wholehearted service.

  • Page 3: Table Of Contents

    CH2 Series TABLE OF 5.6. Connect the Battery Power Cable ................................. 48 5.7. System Connection ......................................51 5.8. System Connection Diagram ..................................53 CONTENTS 5.9. AFCI ............................................59 6. COMMISSIONING ................................61 6.1. Start Up and Shut Down the Inverter ................................62 6.2.

  • Page 4: Scope Of Application

    CH2 Series 1.1. Scope of Application This User Manual describes instructions and detailed procedures for installing, operating, maintaining, and troubleshooting of the following SAJ product: ⚫ CH2-29.9K-T4, CH2-30K-T4, CH2-40K-T5 ⚫ CH2-49.9K-T6, CH2-50K-T6, CH2-63K-T6 1.2. Safety Instructions DANGER · DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
  • Page 5 · 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 6: Explanations Of Symbols

    CH2 Series 2.2. Explanations of Symbols Symbol Description Danger of electrical voltage This device is directly connected to public grid. All operations to the battery shall only be carried out by qualified personnel. Danger to life due to high electrical voltage There might be residual currents in inverter because of large capacitors.

  • Page 7: Product Information

    3.1. Product Application Scope CH2 series are hybrid photovoltaic inverters applicable to both on-grid and off-grid solar systems. The energy generated by the PV system is fed to the loads first, and then the surplus energy can charge the battery for later use.

  • Page 8: Terminals Description

    CH2 Series 3.3. Dimension 3.4. Terminals Description A BC 630 mm 337 mm 953 mm Figure 3.3. Electrical interface of CH2 Inverter Callout Silkscreen Function DC SWITCH Direct current (DC) switches Ground connection. Two additional ground connection ports are provided under the battery Figure 3.2.

  • Page 9: Data Sheet

    CH2 Series 3.5. Datasheet Model CH2-29.9K-T4 CH2-30K-T4 CH2-40K-T5 Rated Input Voltage [V] 3L+N+PE, 380/400 3.5.1. CH2-(29.9K, 30K)-T4 Rated Input Frequency/Range [Hz] 50 Hz: 45–55; 60 Hz: 55–65 AC Output [Back-up] Model CH2-29.9K-T4 CH2-30K-T4 CH2-40K-T5 Max. Apparent Power [VA] 29900 33000...
  • Page 10 CH2 Series Model CH2-29.9K-T4 CH2-30K-T4 CH2-40K-T5 Model CH2-49.9K-T6 CH2-50K-T6 CH2-60K-T6 AC Input [On-grid] VDE4105, IEC61727/62116, VDE0126, AS4777.2, CEI 0 21, EN50549-1, G98, G99, Rated AC Voltage [V] 3L+N+PE, 380/400 Standard C10-11, UNE217002, NBR16149/NBR16150, IEC62109-1/-2, NBT32004-2018, EN61000-6-2, EN61000-6-4 Rated Frequency [Hz] 50, 60 Max.
  • Page 11 CH2 Series Model CH2-49.9K-T6 CH2-50K-T6 CH2-60K-T6 Cooling Method Smart fan cooling Ambient Humidity 0–100% Non-condensing Altitude [m] ≤3000 Ingress Protection IP66 Dimensions [H*W*D] [mm] 630*953*337 Weight [kg] Warranty [Year] 5, 10 VDE4105, IEC61727/62116, VDE0126, AS4777.2, CEI 0 21, EN50549-1, G98, G99,...

  • Page 12: Installation Instructions

    4.1. Unpacking 4.1.1. Check the Outer Package Although SAJ’s products are thoroughly tested and checked before delivery, the products may suffer damages during transportation. Check the package for any obvious signs of damage, and if such evidence is present, do not open the package and contact your dealer as soon as possible.

  • Page 13: Mounting Method

    CH2 Series 4.2. Installation Method and Position 4.2.2. Mounting Method 4.2.1. Installation Position and Space Requirement This device is cooled by natural convection and suggested an indoor installation or an installation under a sheltered place to prevent the product from exposure to direct sunlight, rain and snow erosion.

  • Page 14: Mounting Procedure

    CH2 Series 4.3. Mounting Procedure 4.3.2. Mount the Inverter Select one of the following options to mount the inverter: 4.3.1. Installation Tools ⚫ Mount the inverter on the wall. Installation tools include but are not limited to the following recommended ones. Use other auxiliary tools on ⚫...
  • Page 15 CH2 Series Step 3. Drill four holes at the depth of 80-90 mm in the wall and place the expansion tubes in the holes using Step 5. Carefully mount the inverter onto the mounting bracket. Make sure that the rear part of the inverter is a rubber mallet.
  • Page 16 CH2 Series To install the inverter on a frame: Step 3. Secure the mounting bracket to the frame with screws. Step 1. Secure the back panel with the two side brackets to assemble the mounting bracket. M4*10 1 N·m Figure 4.12.
  • Page 17 CH2 Series Step 5. Secure the inverter to the mounting bracket with one screw on each side. M6*30 5 N·m Figure 4.14. Securing the inverter...

  • Page 18: Connect The Grounding Cable

    CH2 Series 5.1. Connect the Grounding Cable Electrical connection must only be operated by professional technicians. Before connection, the technicians must wear necessary protective equipment, including insulating gloves, insulating shoes and safety helmet. WARNING · Connect the grounding cable before other electrical connections.

  • Page 19: Communication Connection

    CH2 Series 5.2. Communication Connection 5.2.2. Connect the Communication Cables and Plugs Step 1. Remove the front cover of the inverter, and keep the cover and the screws in a proper location. 5.2.1. Communication Interfaces Overview The inverter provides the communication interfaces and ports that allow the inverter to communicate with external equipment and systems like the generator, the energy management system (EMS), and so on.

  • Page 20: Ems Connection

    CH2 Series 5.2.3. Grid Current Transformer Connection Step 4. Peel off the insulation skin of the wire by proper length. Insert the wire into the plug and press the orange button to secure the cable. The CT ports are provided to connect with the current transformers (CT) to sample the current flowing through the grid.

  • Page 21: Generator Connection

    CH2 Series 5.2.6. Generator Connection The DRY.DO1 port can connect with the generator to control the start and stop of the generator. Figure 5.11. Generator connection 5.2.7. Dry Contact Connection Figure 5.9. EMS connection in parallel The DRY.DO2 port is reserved as an output dry contact for future use.
  • Page 22 CH2 Series 5.2.8. Emergency Stop Switch Connection 5.2.10. RCD Connection The SHUT DOWN port can connect with an external switch to stop the inverter immediately in emergent The DRED/RCR ports can connect with external residual current devices (RCD) or demand response enabling situations.
  • Page 23 CH2 Series Port Switch Function ADD1, ADD2 Reserved for future use. METER.485 Provide the 120 Ω terminal resistors for RS485 communication with the external meters. Turn the switch on as needed. Provide the 120 Ω terminal resistors for RS485 communication with the EMS.
  • Page 24 CH2 Series Step 2. Insert the AC cables through the corresponding cable glands at the bottom of the inverter. Procedure Step 1. Loosen the water-proof nuts of GEN, BACK-UP, and GRID cable glands at the bottom of the inverter. Figure 5.18. Inserting the cables Step 3.
  • Page 25 CH2 Series 5.3.2. External AC Circuit Breaker Step 4. Loosen the screws on the L1, L2, L3, N and PE ports. Secure the AC cables to the corresponding ports of L1, L2, L3, N and PE with the screws. (L1/L2/L3/N: 15 N· m; PE: 8 N· m) Install an external circuit breaker to ensure that the inverter can be disconnected from the grid safely.
  • Page 26 CH2 Series Step 4. Insert the positive and negative cables into the positive and negative connectors. Gently pull the NOTICE cables backward to ensure firm connection. · Place the connector separately after unpacking to avoid confusion about cable connections. · Connect the positive connector to the positive side of the solar panels, and connect the negative connector to the negative side of the solar side.

  • Page 27: Connect The Battery Power Cable

    CH2 Series 5.5. Communication Module Installation Step 7. Insert the positive and negative cable connectors into the positive and negative PV ports on the inverter until you hear a “click” sound. Remove the dust-proof cover from the 4G/WIFI port, plug in the communication module, and rotate less than 90 degrees to secure the module.
  • Page 28 CH2 Series Step 3. Fasten the lock screws back to the positive and negative connectors. Prepare the battery connection cables according to the following specification: Recommended cable cross-sectional area (mm² ) Table 5.6. Recommended specifications of battery connection cables It is optional to install a breaker between the battery system and the inverter.

  • Page 29: System Connection

    CH2 Series 5.7. System Connection The following figure shows the system connection for the grid system without special requirements. Note：The backup PE line and earthing bar must be grounded properly. Otherwise, the backup function may The following figure shows the system connection applicable in Australia and New Zealand. The neutral cable be inactive during blackout.

  • Page 30: System Connection Diagram

    CH2 Series 5.8. System Connection Diagram In this deployment, prepare the GRID, GEN, and Backup AC cables according to the following specifications: Cable cross-sectional area (mm² ) 5.8.1. Backup Single Deployment Model Conductor material Value range Recommended value The following diagram shows the system connections of a single machine where both the backup and the CH2-29.9K-T4...
  • Page 31 CH2 Series 5.8.3. Backup Parallel Deployment See the following diagram of system connections for single deployment with on-grid loads only: The following diagram shows the system connections of parallel deployment where both the backup and the on-grid loads are enabled.
  • Page 32 CH2 Series 5.8.4. On-grid Parallel Deployment In this deployment, prepare the GRID, GEN, and Backup AC cables according to the following specifications: Cable cross-sectional area (mm² ) The following diagram shows the system connections for parallel deployment with on-grid load enabled only:...

  • Page 33: Afci

    CH2 Series Note: For detailed meter and EMS connections, see section 5.2 “Communication Connection”. Figure 5.2. System connection 5.9. AFCI The inverter is equipped with an arc-fault circuit interrupter (AFCI). With AFCI protection, when there is an arc signal on the DC side due to the aging of the cable or loose contact, the inverter can quickly detect it and cut...

  • Page 34: Commissioning

    CH2 Series 6.1. Start Up and Shut Down the Inverter 6.1.1. Start Up Turn on the DC switches on the left side of the inverter to start up the inverter. When the LED indicator shows solid green, it indicates that the inverter is up and running.

  • Page 35: Led Indicators Introduction

    CH2 Series 6.2. LED Indicators Introduction Description LED indicator Status Solid The inverter is importing electricity from the grid. On 1s, off 1s The inverter is exporting electricity to the grid. On 1s, off 3s No importing and exporting. System Off-grid.

  • Page 36: Install The Elekeeper App

    CH2 Series 6.3. Install the elekeeper App Step 3. Complete the inverter settings by following the instructions on the screen. For example: The elekeeper App can be ued for both nearby and remote monitoring. It supports Bluetooth/4G or Bluetooth/Wi-Fi connection with the inverter.

  • Page 37: View Inverter Settings

    CH2 Series 6.7. Change the Working Modes 6.5. View Inverter Settings Select the working mode of the ESS on the App to ensure customized and maximum utilization of the ESS. After initialization, the user can monitor the inverter and battery group status on the App. The following •...
  • Page 38 CH2 Series Settings of Max Self-Consumption mode: Settings of Micro-Grid mode: Settings of VPP mode: Settings of TOU mode:...

  • Page 39: Set The Export Limit

    CH2 Series 6.8. Set the Export Limit The export limit function controls the maximum power that the inverter exports to the grid. For this function to take effect in single-machine deployment, the user needs to prepare a meter and connect the meter to the inverter as the figure shows: There are two methods to control the export limit, the two methods are alternative to each other.

  • Page 40: Self-Test (For Italy)

    Step 4. Select Italy as the country. Step 6. After the self-test is completed, tap the search icon on the top right corner to check the test report. Download the test report if the self-test fails and contact SAJ or your inverter supplier.

  • Page 41: Set Reactive Power Control (For Australia)

    CH2 Series 6.10. Set Reactive Power Control (For Australia) 6.10.1 Set Fixed Power Factor and Fixed Reactive Power Modes Procedure Step 1. Log in to the elekeeper App and connect to the inverter through Bluetooth connection. Step 2. On the Device List page, select the inverter under Device, and select Safety Settings on the Local Connection page.
  • Page 42 CH2 Series 6.10.2 Set V-Watt and Volt-Var Modes This inverter complies with AS/NZS 4777.2: 2020 for power quality response modes. The inverter satisfies different regions of DNSPs' grid connection rules requirements for volt-watt and volt-var settings. For example, see the AS4777 series settings as the following figures show: Note: With regard to the power rate limit mode, the product WGra is set to 16.67%Pn by default in the...

  • Page 43: Troubleshooting

    CH2 Series 7.1 Troubleshooting Contact your supplier for troubleshooting and remedy. Error Code Error Message Master Relay Error Master EEPROM Error Master Temperature High Error Master Temperature Low Error Lost Communication M<->S GFCI Device Error DCI Device Error Current Sensor Error...
  • Page 44 CH2 Series Master Bus Voltage Low Slave HW Bus Volt High Master Grid Phase Lost Lost Communication D<->C Master PV Voltage High Master Arc Device Error Master Islanding Error Master PV Mode Error Master HW Bus Voltage High Authority expires...

  • Page 45: Routine Maintenance

    CH2 Series Inverter Cleaning Clean the enclosure lid and LED indicator of the inverter with moistened cloth with clear water only. Do not use any cleaning agents as it may damage the components. Heat Sink Cleaning Clean the heat sinks with dry cloth or air blower. Do not clean the heat sink with water or cleaning agents.

  • Page 46: Appendix

    Head Quarter Guangzhou Sanjing Electric Co., Ltd. APPENDIX Address: SAJ Innovation Park, No.9, Lizhishan Road, Guangzhou Science City, Guangdong, P.R.China. Tel: +86 20 6660 8588 Website: https://www.saj-electric.com/ 9.5. Trademark SAJ is the trademark of Sanjing.

This manual is also suitable for:

Ch2-29.9k-t4Ch2-30k-t4Ch2-40k-t5Ch2-49.9k-t6Ch2-50k-t6Ch2-63k-t6 ... Show all

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