CPS SCA Series - Commissioning; Mechanical Installation Check; Conductor Connections Check; Electrical Check

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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 check
 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 check
 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.
Note: If Tigo TS4-A-F/TS4-F products are installed and in the OFF
position, each module will measure 0.6Vdc. Ensure the DC open circuit
voltage of input strings will be less than 1000V when power is supplied to
the Rapid Shutdown transmitter, if applicable.