4.4 Installation Procedure--------------------------------------------------------------------------------------------------------------- 9 4. 5 Install the AC Branch Circuit Junction Box------------------------------------------------------------------------------------10 4.6 Mounting------------------------------------------------------------------------------------------------------------------------------11 4.6.A Attach BDM-300/400 to the Racking--------------------------------------------------------------------------------- 11 4.6.B Attach BDM-300/400 to the Frame------------------------------------------------------------------------------------11 4.7 Connect the BDM-300/400 Wiring Harnesses------------------------------------------------------------------------------- 12 4.8 Ground the System----------------------------------------------------------------------------------------------------------------- 13 4.8A Through Trunk Cable-------------------------------------------------------------------------------------------------------13...
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8.1.C Error Mode (except for grounding error)-----------------------------------------------------------------------------20 8.1.B NOT communicating with BDG-256, and with no error-----------------------------------------------------------20 8.1.C Grounding Fault------------------------------------------------------------------------------------------------------------ 21 8.2 Troubleshooting An Inoperable BDM-300/400/400------------------------------------------------------------------------ 21 8.3 Disconnecting a BDM-300/400 from the PV Module-----------------------------------------------------------------------21 8.4 Installing a Replacement BDM-300/400---------------------------------------------------------------------------------------21 9. Data Sheets----------------------------------------------------------------------------------------------------------------------------------- 22 9.1 BDM-300------------------------------------------------------------------------------------------------------------------------------ 22 9.2 BDM-400------------------------------------------------------------------------------------------------------------------------------ 23...
180W to 2000W, and industry leading Rapid Shutdown Devices (RSD). Our field deployment results have demonstrated the high efficiency and reliability of NEP solar inverters. At NEP, we are committed to developing Clean, Reliable, Affordable, and Efficient products for our customers worldwide.
Thank you for your business, and please do not hesitate to contact us if you have any questions or concerns. 1.2 Standards Compliance The BDM-300/400 complies with the NEC 2014 and NEC 2017 article 690.12, and CEC 2015 section 64-218. 1.3 How to Use This Manual This manual provides detailed product information and installation instructions for the BDM-300/400.
2. SAFETY INSTRUCTION WARNING: PLEASE READ THIS MANUAL BEFORE INSTALLATION. ANY DAMAGE TO THE PRODUCT DUE TO NOT FOLLOWING THIS MANUAL IS NOT COVERED BY THE WARRANTEE. ALL THE INSTALLATION SHOULD BE DONE BY CERTIFIED ELECTRICIAN. IT IS IMPORTANT TO NOTE THAT NOTHING INSIDE THE PRODUCT SHOULD BE MODIFIED, ASIDE FROM THE CABLE CONNECTORS.
3. FCC COMPLIANCE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Please contact NEP technical support should you need more information on this subject. 4.1 NEP Parts Needed In addition to the micro inverters, PV modules, racking, and associated hardware, you’ll need the BDM-300/400 installation kit. This kit includes the following items: ●...
The finished system should be similar as in the diagram. Detailed installation steps are listed in the following section. DC circuits of BDM-300/400 are isolated and insulated from ground. An integrated grounding protection circuit is included in the micro inverter. Modified 04/13/2023 by JMB...
PV module junction box or any other obstructions. WARNING: ALLOW A MINIMUM OF .75 INCHES BETWEEN THE TOP OF THE ROOF AND THE BOTTOM OF BDM-300/400. WE ALSO RECOMMEND THAT YOU ALLOW .50 INCHES BETWEEN THE BACK OF THE PV MODULE AND THE TOP OF BDM-300/400. DO NOT MOUNT BDM-300/400 IN A LOCATION THAT ALLOWS LONG-TERM EXPOSURE TO DIRECT SUNLIGHT.
Ensure that the microinverter is securely fastened and level. 4.6.B Attach BDM-300/400 to the Frame ● BDM-300/400 can be mounted on the frame of the PV modules. Please refer to the manual from the corresponding PC module manufactures that support BDM-300/400. 4.7 Connect the BDM-300/400 Wiring Harnesses ●...
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WARNING: DO NOT EXCEED THE MAXIMUM NUMBER OF BDM-300/400 IN AN AC BRANCH CIRCUIT, AS DISPLAYED ON THE UNIT-RATING LABEL. For 12AWG trunk cable, EACH BDM-300/400 AC BRANCH CIRCUIT MUST BE SOURCED FROM A DEDICATED BRANCH CIRCUIT PROTECTED BY A 20A MAXIMUM BREAKER.
4.8A Through Trunk Cable ● Each BDM-300/400 has a built-in ground protection circuit. The grounding wire is connected through the trunk cable and should be securely attached to the ground connector in the junction box to ensure proper grounding of the microinverters. It is important to follow all local electrical codes and regulations.
5. Commissioning WARNING: CONNECT BDM-300/400 TO THE ELECTRICAL UTILITY GRID ONLY AFTER RECEIVING PRIOR APPROVAL FROM THE UTILITY COMPANY. WARNING: BE AWARE THAT ONLY QUALIFIED PERSONNEL CAN CONNECT BDM-300/400 TO THE ELECTRICAL UTILITY GRID. WARNING: ENSURE THAT ALL AC AND DC WIRING IS CORRECT. ENSURE THAT NONE OF THE AC AND DC WIRES IS PINCHED OR DAMAGED.
● NEP offers a barcode scanner that can simplify the process of inputting serial numbers. To use the scanner, plug it into the gateway's USB port and navigate to the COM ID screen as in section 6.1.A. Scan the barcode of the desired module into the Inverter1 cell, and repeat until all serial numbers have been input.
We recommend providing as much detail as possible to help us better understand your needs. ● Once you have registered, please contact NEP Support via email at support@northernep.com or by calling (888) 598-9901 to have your account upgraded to an installer account. This will allow you to access additional features and resources to help you better manage your NEP products.
5.6 Create a Site on NEP Website ● Access your installer account on the NEP website at https://user.nepviewer.com/pv_manager/login.php using your registered email and log in to your account. Then, click on the "Add Site" button to create a new site.
5.7 Verify and Map Site ● Once you have confirmed the creation of the site on the NEP website, navigate to your dashboard where you should be able to see it. ● Click on the site to access its information and then click on "Open Viewer." The site's production data should now be visible on the first page.
6. Operating Instructions When DC voltage from the module is applied, the BDM-300/400 is powered on automatically. Once sufficient DC power is applied, the status LED will begin to flash, indicating that the BDM-300/400 is live. 6.1 Status: Standby ●...
WARNING: ALWAYS DISCONNECT AC POWER BEFORE DISCONNECTING PV MODULE WIRES FROM BDM-300/400/400. THE AC CONNECTOR OF THE FIRST BDM-300/400/400 IN A BRANCH CIRCUIT IS SUITABLE AS A DISCONNECTING MEANS ONCE THE AC BRANCH CIRCUIT BREAKER IN THE LOAD CENTER HAS BEEN OPENED.
Connect the positive DC wire from the PV module to the negatively marked DC connector (male pin) of the BDM-300/400. Then connect the negative DC wire from the PV module to the positively marked DC connector (female socket) of the BDM-300/400. Repeat for all remaining PV modules using one BDM-300/400 for each module.
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