SolarEdge
SolarEdge Installation Guide â MAN-01-00057-2.3
SolarEdge Installation Guide â MAN-01-00057-2.3
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Appendix E: Safe DC<br />
Appendix E: Safe DC<br />
When AC supply to the inverter is shut off (by shutting off the AC breaker at the site), or when<br />
the inverter ON/OFF switch is turned to OFF, the DC voltage drops to a safe voltage of 1V per<br />
optimizer.<br />
The <strong>SolarEdge</strong> inverters are certified for compliance with the following standards as<br />
disconnection devices for PV generators, meaning that they can replace a DC disconnect:<br />
• IEC 60947-3:1999 + Corrigendum: 1999 + A1:2001 + Corrigendum 1:2001 + A2:2005;<br />
• DIN EN 60947-3<br />
• VDE 0660-107:2006-03<br />
• IEC 60364-7-712:2002-05<br />
• DIN VDE 0100-712:2006-06.<br />
In compliance with these standards, the disconnection mechanism operates as follows:<br />
1. Turn the inverter ON/OFF switch, located at the bottom of the inverter, to OFF, or<br />
disconnect the AC by shutting off the AC breaker at the site. The DC voltage displayed on<br />
the inverter LCD begins to decrease.<br />
If the AC breaker was shut off, the LCD does not display. In this case, wait five minutes.<br />
2. When the DC voltage reaches a safe voltage, the PV connectors at the input to the inverter<br />
can be disconnected. A galvanic separation then exists between the PV array and the<br />
inverter.<br />
WARNING!<br />
Under single fault conditions, the Safe DC voltage is only guaranteed when<br />
using modules of up to:<br />
• 95Voc when using the single phase inverter<br />
• 70Voc when using the three phase inverter<br />
108<br />
<strong>SolarEdge</strong>-Installation Guide MAN-01-00057-3.1