SMA SC 100 Indoor Installation - Manual (Page 15)

SMA Solar Technology AG Safety Instructions
Installation Guide SC-100-IEN093231 15
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.
Burns
Immediately after isolating the device, depending on the operating conditions, certain components
can be very hot (e.g. fuses, transformer core, sine wave filter, heatsinks etc.).
Safety gloves should always be worn when working near components that can be expected to be
very hot.
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.
WARNING!
The discharge time of the capacitors is longer than 5 minutes.
WARNING!
Warning: rotating fans in the inverter!
We recommend the use of ear protection when in the vicinity of the device for extended
periods.
We recommend that safety gloves be worn during all work on the device.