Understand the interface decision

A supply voltage measured when the turbine is idle does not describe the generating condition. Cable impedance, connection quality and power flow affect the inverter-terminal voltage. Measurements at different times can conceal this relationship; compare synchronized values at defined points.

Cable selection joins electrical performance, installation conditions and termination requirements. A calculation for one purpose does not settle the others. Keep the actual route and equipment interface attached to the design review, so later changes remain visible.

Put these inputs in the review record

Use a project-specific worksheet to capture the following information. For each entry, name the document, revision and person responsible for resolving any uncertainty.

• Inverter-terminal and connection-point voltages during generation. Identify the exact configuration and the supporting document.
• Cable length, conductor details and connection condition. Keep the design assumptions visible in the project record.
• Active and reactive power during each measurement interval. Name the responsible reviewer and resolve any missing information.
• Approved grid limits and equipment protection configuration. State how this entry will be verified during acceptance.

Define the acceptance boundary

Use the electrical designer’s assessment to distinguish feeder voltage rise from an already high upstream voltage. Do not widen grid-protection limits to hide a wiring or connection problem. Any setting change needs the applicable approval.

Retain a time-aligned trend showing voltage and exported power. The important evidence is whether the voltage difference grows under generation, not whether an unloaded meter reading happens to sit inside the permitted range.