ABB PVS-60-TL-US Product Manual page 141

4. Operations on External AC switches
The diagram below represents a possible arrangement of the PV plant.
Depending on the design choices made by the developer of the plant
some of the devices could not be present. Identify the external AC
switch(es) in the plant with the support of the plant manager.
• Open the external AC disconnect switch or the main external AC
disconnect switch (blue in below picture) outside the inverter (IEC
60364-7-712.536.2.2 and NFPA 70E). In case none of the LV AC
switches are present, the MV switch must be opened.
• Affix designated lock preventing operation onto any external AC
disconnect device, affixing designated tags (LOTO procedure).
Identification of the external switch may require the cooperation of the plant manager and it
must be included in the switching plan defined during the preparation of the work.
• Check on the status LEDs
carried out (Missing Grid status):
the shutdown command has been
05
- Power LED (Green): Flashing
- Alarm LED (Yellow): ON (solid)
- GFI LED (Red): OFF
- WLAN/LAN LED (Blue): Depends by the communication
status.
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8 - Maintenance