Power distribution between connectors
In multi-output systems, the controller can allocate modules or output capacity based on current demand, installed limits and vehicle conditions. Any quoted distribution matrix should distinguish cabinet nameplate capacity from concurrent delivery.
- Ask for maximum simultaneous connector count and minimum allocation step.
- Define site priority rules and behavior when communications fail.
- Evaluate load shedding, phase balancing where applicable and metering accuracy.
CSMS and OCPP integration
A charging station management system may handle availability, start/stop commands, fault monitoring, firmware management and transactions. OCPP 1.6, 2.0.1 and newer versions are not interchangeable promises; confirm the exact firmware and tested feature profiles.
- Obtain protocol version, security profile and interoperability evidence.
- Document ownership of customer data, hosting geography and API access.
- Define who handles remote troubleshooting, patches and device credentials.
Payment and compliance
European public-charging projects can have requirements for ad hoc payment, transparent pricing and user interfaces under AFIR and national regulations. Marketing statements about built-in POS or QR payments must be tested against the exact local obligation.
- Record country and public/private usage classification.
- Confirm receipts, roaming/OCPI where needed and payment-terminal integration.
- Review cybersecurity, privacy and data-processing arrangements.