SMA MEDIUM VOLTAGE POWER STATION 500SC-JP - Update Via User Interface; Changing the Insulation Monitoring; Insulation Monitoring with GFDI and Insulation Monitoring Device; Safety with Insulation Monitoring with GFDI and Insulation Monitoring Device

Requirement:
☐ Connection to SunnyPortal must be established (see Section8.2.2, page106).
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > Data transmission.
3. In the field Automatic firmware update, select the option yes.
4. Select the button [Save].
8.4.2 Update via User Interface
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Info.
3. Select the button [Refresh] in the field VersionFirmware.
8.5 Changing the Insulation Monitoring
8.5.1 Insulation Monitoring with GFDI and Insulation Monitoring Device
8.5.1.1 Safety with insulation monitoring with GFDI and insulation monitoring device
Danger to life from electric shock due to live voltage
High voltages are present in the conductive components of the inverter. Touching live components results in death or
serious injury due to electric shock.
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Wear suitable personal protective equipment for all work on the product.
• All work must be carried out in accordance with this document. All safety information must be observed.
• Do not touch any live components of the inverter or the medium-voltage grid. Comply with all applicable safety
regulations for handling medium-voltage grids.
Ground-fault monitoring with GFDI does not provide protection from personal injury.
The order option "GFDI and insulation monitoring device" allows you to manually switch the PV power plant from
grounded operation to insulated operation. To ensure that there is no insulation error on the grounded terminal, an
insulation measurement is carried out. After switching to insulated operation, the insulation monitoring device checks all
poles of the PV power plant for potential insulation errors. Switching to insulated operation is useful for performing
maintenance or service work on or near the PV power plant (e.g. cutting the grass) or for checking the status of the
insulation at regular intervals. After completion of the maintenance work, the PV power plant must be switched back to
grounded operation.
8.5.1.2 Switching to Insulated Operation
1. Turn the key switch to Stop.
2. Wait 15minutes before opening the inverter. This will ensure that the capacitors are discharged.
3. Disconnect the circuit breaker of the GFDI manually.
4. Close the inverter.
8 Operation
SMA Solar Technology AG
System ManualMVPS22JP-SH-en-11112