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7
Commissioning
7.1 Commissioning Requirements
Before starting PCS for the first time, thoroughly inspect the PCS for correct and secure
installation.
• Make sure all cables are connected correctly and all bolts are screwed securely.
• Make sure AC circuit breaker and DC load switch are in the disconnected state.
• Make sure DC side voltage meets the requirement and the polarities are correct.
• Make sure AC side voltage meets the requirement.
• Make sure all system connections meet the requirements of related standards and
regulations.
• Make sure the system is properly grounded. Sound ground resistance ensures the safety
of the whole system. Make sure the ground resistance meets the requirement (ground
resistance should be no more than 4Ω).
All operation during commissioning must be performed by qualified personnel on-
ly. Unauthorized persons are not permitted to operate.
Disconnect all external AC and DC switches before commissioning.
7.2 Checking before Commissioning
7.2.1 Checking Cable Connection
• Check cables for any possible damages or cracks;
• Check again to make sure all cables are connected correctly according to the system cir-
cuit diagram. Adjust the cable connection if necessary.
• Make sure all cables are connected securely. Fasten corresponding installation screws if
necessary.
• Check the PE equipotential connection. Ensure the PCS AC side PE ground copper bar
has been connected to the equipotential connection point in the electrical room and prop-
erly grounded. The ground resistance should be no more than 4Ω.
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