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16 Extension of the Battery
16.5
Installing an Additional Battery Cabinet
1. By measuring the voltage at -POL and +POL, verify whether the DC output voltage of each new battery module is
between 78.4 V and 78.6 V.
2. If the DC output voltage of a new battery module
3. is outside the range between 78.4 V and 78.6 V, contact Service.
4. By measuring the voltage at Charger+ and Charger-, verify whether the DC output voltage of each installed
battery cabinet is in the specified range.
5. If the DC output voltage of an installed battery cabinet is not in the specified range, contact Service.
6. Increase the state of charge of the battery cabinets already installed to 20%. To do this, charge or discharge the
battery.
7. Disconnect the battery and battery inverter from voltage sources (see Section 11, page 119).
8. Install the additional battery cabinet.
9. Mount the battery management system and battery modules in the additional battery cabinet.
10. Ground the additional battery cabinet.
11. Connect the DC cables within the battery cabinet.
12. Connect the communication cables within the battery cabinet.
13. Connect the additional battery cabinet to the CAN communication system between the battery cabinets.
14. Connect the DC cables to the DC distributor.
15. Set addresses and terminators on the battery management systems of all battery cabinets as appropriate to the
current system variant.
16. Connect the external switch of the additional battery cabinet to the battery management system.
17. Commission secondary battery cabinets. Configure the additional battery cabinet as a secondary battery cabinet.
18. Commission the primary battery cabinet.
19. Commission the inverter.
20. Reconfigure the inverter.
Also see:
• Positioning the battery cabinet ⇒ page 54
• Installing the battery management system ⇒ page 55
• Installing the battery modules ⇒ page 57
• Earthing the battery cabinet ⇒ page 79
• Connecting the External Switch to the Battery Management System ⇒ page 85
• Connecting DC Cables within the Battery Cabinet ⇒ page 83
• Routing DC Cables to the Inverter or DC Distributor in the Battery Cabinet ⇒ page 84
• Connecting DC Cables to the Inverter or DC Distributor in the Battery Cabinet ⇒ page 85
• Setting the Address and Terminator ⇒ page 94
• Connecting the Battery Communication System within the Battery Cabinet ⇒ page 80
• Connecting the battery communication system to the inverter ⇒ page 81
• Connecting the CAN Communication System ⇒ page 81
• Commissioning Secondary Battery Cabinets ⇒ page 96
• Commissioning the Primary Battery Cabinet ⇒ page 97
180
ESSX-20-SH-en-10
SMA Solar Technology AG
System Manual
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