SMA Solar Technology AG 7 Commissioning
Installation Manual SI80H-60H-OffGrid-IA-en-11 71
Checklist for Additional Earthing
If the battery is earthed, you must check the additional earthing on the off-grid inverter.
Checklist for DC Connection of the Off-Grid Inverter
Check item Check criterion OK Not
applicable
Conductor cross-section for
the additional earthing
The conductor cross-section must correspond
to the conductor cross-section of the battery
earthing.
Additional earthing terminal Hexagon socket screw is screwed tight
(torque: 4 Nm ... 5.7 Nm).
PE connection to earth The PE wires must be earthed – for example,
through a connection to an earthing busbar
or a foundation earth electrode.
Check item Check criterion OK Not
applicable
Enclosure opening for DC The diameter of the DC cable must be
14 mm ... 25 mm in the M32 cable gland.
DC connection Terminal lugs are pressed on firmly.
Terminal lugs on the off-grid inverter are
screwed tight (torque: 4 Nm ... 5.7 Nm).
DC cables The cables from the battery via the BatFuse
to the off-grid inverter must not be longer
than 10 m.
The conductor cross-section corresponds to
the minimum requirements of 50 mm² ...
95 mm² (recommended conductor cross-
section, see Section 6.6).
BatFuse Fuse links are matched to the off-grid
inverter.
•SI8.0H: 200A
•SI6.0H: 160A
Cables are attached to the BatFuse with the
required torque (see BatFuse installation
manual).
DC sources and DC loads, if
present
All DC sources and DC loads are installed
according to the manufacturer's
specifications.
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