12.4.1.1 Overview of the Base Plates on the MV Power Station ................................................................................ 167
12.4.1.2 Inserting Cables through the Base Plates of the Inverters ............................................................................. 167
12.4.1.3 Inserting the Cables through the Base Plates of the Medium-Voltage Switchgear...................................... 168
12.4.1.4 Inserting the Cables through the Cable Glands ............................................................................................ 168
12.4.2 Inserting the Cables in the Communit .............................................................................................................169
12.4.3 Inserting the Cables .........................................................................................................................................171
12.5 Bolted Connections ..........................................................................................................................................172
12.5.1 Preparing the Grounding and DC Cables for Connection............................................................................172
12.6 Clamp Connections..........................................................................................................................................175
12.6.1 Connecting the Cable to the Spring-Cage Terminals.....................................................................................175
12.6.2 Connecting the Cable Shield Using a Shield Clamping Saddle...................................................................177
12.7 Entering the Password via the Touch Display .................................................................................................177
12.8 Settings on the User Interface of the Inverter..................................................................................................177
12.8.1 Logging Into the User Interface .......................................................................................................................177
12.8.2 Logging Out of the User Interface...................................................................................................................178
12.8.3 Accessing the Parameter Overview ................................................................................................................178
12.8.4 Saving Parameter Changes.............................................................................................................................178
13 Function Description .....................................................................................................................179
13.1 Operating States ..............................................................................................................................................179
13.1.1 Overview of the Operating States ..................................................................................................................179
13.1.2 Stop...................................................................................................................................................................180
13.1.3 Grid Monitoring ..............................................................................................................................................180
13.1.3.1 Monitoring the Grid Voltage........................................................................................................................... 180
13.1.3.2 Monitoring the Power Frequency ................................................................................................................... 181
13.1.4 Grid Monitoring Time Reached.......................................................................................................................181
13.1.5 Startup...............................................................................................................................................................182
13.1.5.1 In Normal Operation: Active Power Ramp-Up .............................................................................................. 182
13.1.5.2 After Grid Fault: Decoupling Protection Ramp............................................................................................... 182
13.1.6 Load Operation................................................................................................................................................182
13.1.6.1 MPP .................................................................................................................................................................. 182
13.1.6.2 Q at Night........................................................................................................................................................ 182
13.1.7 Shutdown..........................................................................................................................................................183
13.1.8 Disturbance.......................................................................................................................................................183
13.2 Safety Functions................................................................................................................................................183
13.2.1 Manual Shutdown Functions...........................................................................................................................183
13.2.1.1 External Fast Stop ............................................................................................................................................ 183
13.2.1.2 Remote Shutdown............................................................................................................................................ 184
13.2.2 Automatic Shutdown Functions .......................................................................................................................184
13.2.2.1 Grid Management Shutdown......................................................................................................................... 184
13.2.2.2 Active Islanding Detection............................................................................................................................... 184
13.2.2.3 Passive Islanding Detection............................................................................................................................. 184
13.2.3 Grounding and Insulation Monitoring............................................................................................................185
13.2.3.1 Mode of Operation......................................................................................................................................... 185
13.2.3.2 GFDI ................................................................................................................................................................. 185
13.2.3.3 Remote GFDI.................................................................................................................................................... 186
13.2.3.4 Insulation Monitoring Device .......................................................................................................................... 187
13.2.3.5 GFDI and Insulation Monitoring Device......................................................................................................... 188
13.2.3.6 Remote GFDI and Insulation Monitoring Device........................................................................................... 189
13.3 Power Control...................................................................................................................................................190
13.3.1 Frequency-Dependent Active Power Limitation ..............................................................................................190
13.3.2 Frequency-Independent Active Power Limitation............................................................................................191
Table of Contents
SMA Solar Technology AG
System Manual 9MVPS22JP-SH-en-11
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