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SMA SUNNY ISLAND 6048-US - Page 11

SMA SUNNY ISLAND 6048-US
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SMA Solar Technology America LLC Table of Contents
Operating Manual SI4548-6048-US-BE-en-21 11
14.2.7 Grid Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
14.2.8 Disturbances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
14.2.9 Limitations and Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
14.2.10 Operation Together with PV Inverters and Wind Power Inverters 136
14.3 Generator and Utility Grid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
15 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
16 Multicluster Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
16.1 Communication between the Sunny Island Inverters . . . . . . . . . . . . 143
16.2 Commissioning the Multicluster System . . . . . . . . . . . . . . . . . . . . . . 145
16.3 Switching a Multicluster System On and Off. . . . . . . . . . . . . . . . . . 146
16.3.1 Switching On/Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
16.3.2 Stopping and Switching Off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
16.3.3 Load Shedding in a Multicluster System . . . . . . . . . . . . . . . . . . . . 147
16.4 Generator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
16.5 Behavior with Different States of Charge. . . . . . . . . . . . . . . . . . . . . 147
16.6 Testing Multicluster Communication. . . . . . . . . . . . . . . . . . . . . . . . . 148
16.7 Automatic Frequency Synchronization . . . . . . . . . . . . . . . . . . . . . . 148
16.8 Firmware Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
16.9 Error Handling in a Multicluster System. . . . . . . . . . . . . . . . . . . . . . 149
16.10 Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
16.11 Generator Emergency Operation . . . . . . . . . . . . . . . . . . . . . . . . . 149
17 PV Inverters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
17.1 Connection to the Stand-Alone Grid (Protected Load Switch). . . . . 150
17.2 Setting the Off-Grid Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
17.3 Configuration of the PV Inverters with a Communication Products . 151
17.4 Parameter Settings of the PV Inverters . . . . . . . . . . . . . . . . . . . . . . . 152
17.4.1 Configuration of the PV Inverters in Battery-Backup Systems . . . . . 152
17.4.2 Configuration of PV Inverters in Off-Grid Systems . . . . . . . . . . . . . 153
17.5 Frequency-Shift Power Control (FSPC). . . . . . . . . . . . . . . . . . . . . . . 154
18 Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
18.1 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

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