General Safety Instructions
SMA
Technologie AG
Page 10
SSM-TEN072310
Technical Description
3.9 Cabling
With regard to the SSM-C cabling, it must be ensured that the data lines and the DC
main lines are laid separately. The distance between these two lines should be > 1 m.
In the event of damage to the high voltage line, dangerous voltages can couple into
the cable shield.
In addition, the data line's cable shield must be connected at both ends, i.e. in the SC
and in the SSM-C.
3.10 Electrical Connection
The electrical connection must be performed according to this manual and the device's
technical data.
DC Power Supply
Insertion of the string fuses and connection of the isolation terminals causes the DC
voltage of the connected strings to become available in the device.
The string fuses may only be inserted when the following conditions are satisfied:
•
All connections are made according to this manual
•
The load-disconnecting switch is deactivated, and the isolation terminals are open
•
The DC main lines are connected to the inverter or DC distribution box and are
isolated (no reverse voltage is possible from the inverter).
•
The polarity of the DC voltages at the string inputs has been checked, and there is
no short circuit present
•
The strings have been checked with an insulation test to ensure that there is no
ground fault
NOTICE!
When cabling, ensure that the DC main lines and the data line are laid
separately.
WARNING!
The equipotential bonding must be connected!
