SMA SUNNY TRIPOWER X 20-US - Page 5

Table of contents
SMA Solar Technology AG
Operating manual STPxx-US-50-BE-en-11 5
5 Mounting .................................................................................. 30
5.1 Requirements for Mounting ....................................................................................... 30
5.1.1 Requirements for the Mounting Location............................................... 30
5.1.2 Permitted and prohibited mounting positions........................................ 30
5.1.3 Dimensions for mounting ........................................................................ 31
5.1.4 Recommended clearances for mounting............................................... 31
5.2 Mount the product. .................................................................................................... 32
5.3 Mounting equipment grounding bar......................................................................... 34
5.4 Mount the DC terminal cover (optional)................................................................... 34
6 Electrical Connection................................................................ 36
6.1 Requirements for the electrical connection ............................................................... 36
6.1.1 Permitted grid configurations ................................................................. 36
6.1.2 Residual-current monitoring unit............................................................. 36
6.1.3 Load-break switch and cable protection ............................................... 36
6.1.4 Requirements on the AC conductors ..................................................... 36
6.1.5 Network cable requirements.................................................................. 36
6.1.6 Requirements for the PV modules per input........................................... 37
6.1.7 Requirements on the equipment grounding conductor of the PV
modules ................................................................................................... 37
6.1.8 DC cable requirements........................................................................... 37
6.1.9 Signal cable requirements...................................................................... 37
6.1.10 Additionally required material for the connection to digital inputs...... 38
6.2 Overview of the Connection Area ............................................................................ 38
6.2.1 View from Below..................................................................................... 38
6.2.2 Interior View............................................................................................ 39
6.3 Electrical connection procedure................................................................................ 39
6.4 Connecting the AC conductors ................................................................................. 40
6.5 Connecting the Network Cables............................................................................... 42
6.6 Connection to the Multifunction Relay...................................................................... 43
6.6.1 Pin assignment MFR................................................................................ 43
6.6.2 Connect signal source to MFR............................................................... 44
6.7 Connection to digital input DI 1-4............................................................................. 45
6.7.1 Digital input DI 1-4 ................................................................................. 45
6.7.2 Pin assignment DI 1-4............................................................................. 45
6.7.3 Circuitry overview DI 1-4 ....................................................................... 45
6.7.4 Connecting signal source to DI 1-4....................................................... 45
6.8 Connection to digital input DI 5-6............................................................................. 46
6.8.1 Digital input DI 5-6 ................................................................................. 46
6.8.2 Pin assignment DI 5-6............................................................................. 47
6.8.3 Circuitry overview DI 5........................................................................... 47
6.8.4 Circuitry overview DI 6........................................................................... 47
6.8.5 Connecting Signal Source to Digital Input DI 5-6 ................................ 48