CPS SCA50KTL-DO/US-480, Installation And Operation Manual

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5. Commissioning
Before powering up the PV system it is important to check the installation for any
hazards that may be present. For convenience a commissioning checklist is
included in this manual and can be found in the Appendix.
5.1 Mechanical Installation

Make sure that the mounting bracket is secure and all screws have
been tightened to the specified torque values. (Refer to 3.2
Mechanical installation)

Confirm all knockouts are sealed and conduit is securely attached to
the inverter, creating a water-tight seal.
5.2 Conductor Connections

Make sure all conductors are connected to the right terminals and
properly labeled.

The appropriate cable management is important to avoid physical
damage. No sharp edges from cable ties exist.

Check polarity of DC input conductors. The DC Switch should be in
the
“OFF” position. (Refer to 3.3 Electrical installation)
5.3 Electrical Check

Make sure that the AC circuit breaker is appropriately sized.

Test whether the AC voltage is within the normal operating range.

Confirm the DC open circuit voltage of input strings is less than
1000V.
WARNING:
Please follow the guidelines below before on-grid operation to
eliminate possible dangers and to ensure safety.