Charging hardware sits at the intersection of several standards regimes: electrical safety, connector and communication standards, metering accuracy, and protocol conformance. Vendors summarise all of this as "fully compliant". That claim is worth exactly as much as the certificates behind it.
The four categories
| Category | Covers | Evidence to ask for |
|---|---|---|
| Electrical safety | Enclosure, protection, insulation | Test reports from an accredited laboratory |
| Connector and interface | Physical connector, control pilot behaviour | Type test certificate for the specific model |
| Metering | Accuracy class of the energy meter | Meter make, model and accuracy class in writing |
| Protocol | OCPP conformance | A certification record, not a marketing claim |
Metering is the one that costs money
You bill from the meter, so its accuracy class is directly a commercial matter. Ask which meter is inside the unit, what its accuracy class is, and whether it is separately certified. A charger with an imprecise internal meter is not a compliance problem until a driver checks the figure against their vehicle, at which point it becomes a trust problem you cannot fix with software.
Protocol conformance
OCPP has a formal certification programme, and a certified unit is meaningfully different from one whose vendor has implemented the specification as they understood it. Certification does not eliminate quirks — every implementation has them — but it eliminates the category of vendor whose StatusNotification behaviour is simply invented.
Where a vendor is not certified, test before committing to volume: a full session with meter values, every remote command, a forced disconnect and reconnect, and a firmware update. Two days of work that has saved operators from four-figure quantities of unmanageable hardware.
Import and local content
Where a tender or a subsidy scheme carries local content requirements, the documentation burden falls on you rather than on the vendor. Establish at the quotation stage what proportion of the unit qualifies and what evidence the vendor can supply, because retrofitting that paperwork after installation is generally not possible.