Safety Instructions
SMA
Technologie AG
Page 12
SC-100-13:SE2407
Installation manual
The device contains capacitors on the AC and DC sides that must discharge once the
device has been switched off. After switching off, there are dangerous accidental-
contact voltages present within the device for several minutes. If there is a fault in the
device, these voltages may also remain present for a longer period of time. For these
reasons, wait a minimum of 5 minutes after switching off before opening the device.
3.13 General Information
Working on the Fans
The device is equipped with several fans for cooling. Work on the fans may only be
performed after all insulation measures have been taken, in exactly the same manner
as prescribed for commissioning, maintenance and repair work.
Hearing Protection
The device fans and the power unit create significant levels of operating noise. In
addition to this, a fault in the device can lead to very high sound levels. For these
reasons we recommend the use of hearing protection in its vicinity.
In case of a failure, the DC contactor(s) may carry a life-threatening DC
voltage!
We recommend the extra use of external DC circuit breakers (optionally
available) for disconnecting the Sunny Centrals and/or one or more DC main
cables / Sunny String monitors. Even in the case of faults or fire, this allows system
components to be safely isolated.
The discharge time of the capacitors is longer than 5 minutes.
Warning: rotating fans in the inverter!
We recommend the use of ear protection when in the vicinity of the device for
extended periods.
