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SAJ CH2 Series Quick Installation Manual
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SAJ CH2 Series Quick Installation Manual

SAJ CH2 Series Quick Installation Manual

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This quick installation guide is applicable for inverters CH2-(29.9K-63K)-(T4-T6).
For more information, refer to the inverter user manual.
1. Check the installation methods and clearance
630mm
√
√
2. Install the inverter
Select one of the following options to mount the inverter:
⚫
Mount the inverter on the wall.
⚫
Mount the inverter on a frame. With this option, the installer needs to prepare the frame. Four M10*45 screws are
provided in the delivery for securing the mounting bracket to the frame.
To install the inverter on the wall:
Step 1.
Secure the back panel with the two side brackets to assemble the mounting bracket.
M4*10
1 N·m
V0.0
CH2 Inverter Quick Installation Guide
337mm
953mm
× ×
×
1
© 2025 Sanjing. All rights reserved.

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Summary of Contents for SAJ CH2 Series

  • Page 1 CH2 Inverter Quick Installation Guide This quick installation guide is applicable for inverters CH2-(29.9K-63K)-(T4-T6). For more information, refer to the inverter user manual. 1. Check the installation methods and clearance 630mm 337mm 953mm √ × × × √ 2. Install the inverter Select one of the following options to mount the inverter: ⚫...
  • Page 2 Step 2. Mark the drilling positions on the wall with the mounting bracket. 602 mm 12 mm Step 3. Drill four holes at the depth of 80-90 mm in the wall, and place the expansion tubes in the holes using a rubber mallet.
  • Page 3 Step 6. Secure the inverter to the mounting bracket with one screw on each side. M6*30 5 N·m To install the inverter on a frame: Step 1. Secure the back panel with the two side brackets to assemble the mounting bracket. Step 2.

  • Page 4: Connect The Grounding Cable

    Step 3. Secure the mounting bracket to the frame with screws. Step 4. Carefully mount the inverter onto the mounting bracket. Step 5. Secure the inverter to the mounting bracket with one screw on each side. M6*30 5 N·m 3. Connect the grounding cable The recommended conductor cross-sectional area of the grounding cable is 6 mm².

  • Page 5: Communication Connection

    Step 2. Remove the screw of the grounding terminal, insert the screw through the OT/DT terminal, and secure the cable with the screw. M6*14 5 N·m 4. Communication Connection L3-L3+L2-L2+L1-L1+ EMS.1 RSD.1 SHUT DOWN DRY.DO1 DRY.DO2 CT:5A>Input>1A NC COM NO NO COM NC 4 3 2 1 CT:50mA>Input>10mA PE B A...
  • Page 6 Step 2. Prepare the wires for the 2-pin, 3-pin, and 6-pin plugs depending on which communication functions are required. The recommended wire is of 12-24 AWG. Step 3. Loosen the water-proof cable gland, and insert the wires through the COM1 or COM2 cable gland. Step 4.
  • Page 7 The EMS.1 and EMS.2 ports can supply power to the external energy management system (EMS) at the rated output voltage of 20 V in parallel deployment. Multiple inverters in parallel deployment can supply power to the EMS at the same time, and at least two inverters must provide the power supply to the EMS. The length of the power supply wire to the EMS is limited to 50 meters.
  • Page 8 The SHUT DOWN port can connect with an external switch to stop the inverter immediately in emergent situations. Figure 4.6. Emergency stop switch connection The METER.485 port can connect with the external meter to provide RS485 communication. The additional grounding through the PE pin can be connected as needed. Figure 4.7.
  • Page 9 H. The SW1/2/3 dual inline package (DIP) switches are provided to control the activation of 120 Ω terminal resistors to ensure the communication stability of the corresponding communication functions. Port Switch Function ADD1, ADD2 Reserved for future use. METER.485 Provide the 120 Ω terminal resistors for RS485 communication with the external meters.
  • Page 10 5. Connect the AC cables NOTICE Confirm that the DC switch is OFF during installation to avoid short circuit. Prepare the GRID, GEN, and Backup cables according to different deployment scenarios of the customer. For detailed cable specifications, see Section 5.8 “System Connection Diagram” in the User Manual. Step 1.
  • Page 11 Step 3. Peel off the insulation skin of the AC cables at proper length and crimp the cable ends with the RNB70-10 or SC50-10 OT/DT terminals tightly. Select the corresponding terminals depending on the cable specification. 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.
  • Page 12 6. Connect the PV cables WARNING Make sure the PV array is well insulated to the ground before connecting it to the inverter. Conductor cross-sectional area of cables (mm²) Conductor material Range Recommended value Outdoor multi-core copper wire cable, complying with 1000 V DC 4.0–6.0 Table 6.1.
  • Page 13 Step 5. Tighten the lock screws on the positive and negative cable connectors with the D4 assembly tool. Step 6. Make sure the two DC switches are at the OFF position. Step 7. Insert the positive and negative cable connectors into the positive and negative PV ports on the inverter until you hear a “click”...
  • Page 14 7. Connect the communication module 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. 8. Connect the battery power cables Cable cross-sectional area (mm² ) Table 8.1. Recommended specifications of battery connection cables It is optional to install a breaker between the battery system and the inverter.
  • Page 15 Step 3. Fasten the lock screws back to the positive and negative connectors. Step 4. Insert the positive and negative battery cables to the corresponding ports on the right side of the inverter. 9. Start up the inverter and complete initialization on App Step 1.
  • Page 16 Step 2. Log in to the elekeeper App and complete the initialization. For detailed instructions, refer to the inverter User Manual. Installer: V0.0 © 2025 Sanjing. All rights reserved.

This manual is also suitable for:

Ch2 t4 seriesCh2 t6 seriesChs2-29.9k-t4Chs2-30k-t4Chs2-50k-t6