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 points of sharp edge againstcable 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 APS MLPE RSD products are installed and in the OFF position,
each module will measure ~0.6 to 0.7 Vdc. 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.
To Next Page
Loading...
