SMA SC 500HE-US Installation - Manual (Page 80)

10 Opening the Sunny Central SMA America, LLC
80 SC500HEUS-IA-US_en-14 Installation Manual
10 Opening the Sunny Central
10.1 Opening the Control and Interface Cabinet
1. Turn the stop/start switch on the Control and
Interface Cabinet's door to the left until it reaches
the stop position.
2. The AC and DC switches in the Sunny Central
switch off audibly.
3. Switch off the internal AC main circuit breaker and/
or the external AC disconnect.
– When the Sunny Central is disconnected, the
display turns off.
4. Cover the PV modules.
5. Switch off the DC disconnects and secure them against reconnection.
6. Switch off the fuses in the DC distribution boxes (e.g. Sunny Central String-Monitor) and secure
them against reconnection.
7. Wait 5 minutes
When the Sunny Central is switched off, voltage will remain in the internal capacitors for
another 8 minutes.
☑ The Sunny Central is deactivated and can be opened.
%"/(&3
Electric shock due to improper opening of the Sunny Central.
Death resulting from burning and electric shock.
• All procedures described in this section shall only be conducted by qualified personnel.
• Observe the sequence described here when opening the Sunny Central.
• If problems occur when performing the work described here, contact SMA America
$"65*0/
The DC fuses in the Power Cabinet become hot during operation.
Danger of burn injury due to hot components.
• When working on the Sunny Central wear protective gloves.
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