SMA Solar Technology AG Utility-Scale Solar Inverter Sunny Central 850CP XT

Ensure you have the following materials

Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge completely.

Seal Inspection and Maintenance

Check whether the seals in the sealing area show any damage.

Apply talcum, petroleum jelly or wax to seals to prevent frost damage.

After removing the side panels, check whether the side panel seals display any damage in the sealing area.

Switch off the inverter and wait at least 15 minutes before opening it.

Check that the bolted connections of all assemblies are securely in place.

If bolted connections are loose, tighten them using a torque wrench.

Check whether all bolted connections of the power cabling are securely in place.

If bolted connections are loose, tighten them using a torque wrench.

Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge completely.

Disconnect the inverter (see Section 4, page 26).

Connect the supply voltage (see Section 4.3.1, page 28).

Measure the voltage at the supply voltage output between L1 and N.

Is the voltage approximately 230 V?

Measure the voltage at the supply voltage output of the UPS at -X400 terminal 5 and -X402 terminal 5.

Is the voltage approximately 24 V?

Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge completely.

Observe the warnings on all components.

During operation, do not touch any components marked with hot warnings.

After switching off the product, wait until any hot components have cooled down sufficiently.

Wear suitable personal protective equipment for all work on the product.

Hygrostat and Heating Element Check

Switch off the inverter and wait at least 15 minutes before opening it.

Wear suitable personal protective equipment.

Ensure two persons are available to disassemble and mount the roof.

Disassemble the ventilation grids.

Check the ventilation grids for visible damage.