EVSE testing and calibration
AC and DC EVSE calibration system – Easy Chester Calimera
Calibrate installed AC and DC charging stations with a mobile system built around a calibrated energy reference. Easy Chester Calimera applies a controlled real load, repeats defined operating points and records conditions, readings and deviations. Select the AC/DC configuration for your charger portfolio.
PTB certifiedEasy Chester CalimeraView certification detailsProduct role
What is Easy Chester Calimera?
Calibrate installed charging stations under defined charging conditions with a traceable energy reference.
Calimera combines the reference instrument with EV-side charging behaviour, communication, load, cooling and test-point control. It acquires the readings synchronously and brings the measurement and result into one report.
Calibrate the charging station at its installed location, in the environment where it delivers energy.
Set voltage, current and duration for repeatable measurement points.
Keep reference value and charger value attributable to the same charging event.
Keep the configuration, readings, identifiers and result together for reporting.
Calimera certification
PTB certified
Easy Chester Calimera. For technical qualification and procurement, review the PTB certificate for the Calimera configuration relevant to your measurement task.
Controlled execution
Run defined calibration points and document each result.
- Identify
Register EVSE, connector, meter and site information.
- Configure
Select interface, test points, load mode and reference equipment.
- Connect
Establish the charging session with controlled EV-side behaviour.
- Stabilize
Reach and hold the required voltage and current point.
- Compare
Acquire reference and EVSE meter values for the same interval.
- Report
Document configuration, values, deviations and result.
Link charger identity, operating point, reference readings and result in one calibration record.
Controlled real-load verification
Compare energy readings during real charging.
Compare the charging station and reference readings during the same physical energy transfer at a defined operating point. Include charging communication, the installed current path and thermal behaviour in the repeatable test. Select specialised meter-circuit methods according to the applicable procedure.
Real EV-side communication
The charging station follows the actual low-level and high-level sequence required by the selected interface.
Real voltage and current
The reference meter and EVSE meter observe the same physical energy transfer.
Stable load and duration
The configured load and cooling concept hold the measurement point long enough for the required evaluation.
Traceable AC or DC power meter
Use the approved reference meter and its uncertainty information in the calibration chain.
Installed charger meter
The EVSE value remains linked to charger identity, firmware, connector and test point.
One event, two measured values
Synchronise both readings with the same charging event and retain their measurement context.
Mobile laboratory architectures
From a compact service vehicle to a complete mobile calibration laboratory
Match the mobile platform to your charger portfolio, power, payload and cooling needs. Plan it around the local metrology framework and the calibration organisation’s working methods.
High-power calibration laboratory in a compact van
Bring load, cooling, reference measurement and an operator workspace together in a mobile vehicle for AC and DC calibration.
- Built around the target CCS, CHAdeMO, NACS or AC portfolio
- Standard and Boost operating modes by released configuration
- Power supply, ventilation, payload and cable routing engineered as one system
Pickup laboratory for USA and NIST workflows
A dedicated mobile configuration for North American field deployment and NIST-related metrology workflows.
- Vehicle and payload concept adapted to regional operation
- NIST Handbook 44 and Handbook 130 context by approved project scope
- Connector, load and reference equipment selected for the target market
Load configuration and operating limits
Match the Calimera configuration to your operating points.
Select the Calimera configuration with the load, reference instrument and cooling suited to the voltage, current and dwell time required by your calibration procedure.
| Configuration / order number | DC | AC |
|---|---|---|
| Calimera-062126-4-011 | 40 kW | 22 kW |
| Calimera-130126-4-012 | 130 kW | Not listed |
| Calimera-152126-4-013 | 130 kW | 22 kW |
| Calimera-282126-4-014 | 260 kW | 22 kW |
Source: Calimera brochure, page 4. DC and AC ratings are separate values, not a guaranteed simultaneous operating point. Confirm the supported voltage, current, holding time, cooling and reference-meter range for the selected configuration.
Document each step in the measurement chain.
Retain operating conditions, timestamps, identifiers, values and diagnostics for each test point.
Calibration capability, laboratory accreditation and legal recognition are separate statements. The approved laboratory scope and market procedure remain authoritative.
Open measurement integration
Connect precision power meters through documented open interfaces.
Integrate the laboratory’s approved power meter through an open, documented interface.
Use your laboratory’s reference equipment
Use the reference equipment selected by the laboratory and its uncertainty budget.
Automate acquisition
Record the meter readings alongside the charger results, test point and report.
Avoid manual transfer
Transfer readings with their timestamps and test assignment to reduce manual entry errors.
Keep the system extensible
Add further instruments when an open and maintainable interface is available.
Standards and legal-metrology context
Plan calibration for your target market.
Calimera supplies the technical measurement workflow. The approved procedure, reference chain, uncertainty, authority requirements and legal recognition remain market-specific.
ISO/IEC 17025
ISO/IEC 17025 applies to the calibration laboratory and its accredited scope, not generically to the hardware.
OIML G 22
Relevant metrological guidance for electric vehicle supply equipment, applied by approved edition and project scope.
Eichrecht and VDE context
- VDE-AR-E 2418-3-100
- REA Document 6-A
- IEC 62053-41
- VDE/GMP 6.8
NIST context
- NIST Handbook 44
- NIST Handbook 130
- Project-specific state and authority requirements
No single product configuration, report or accreditation statement automatically satisfies every national procedure. The released system scope and the responsible authority or laboratory decision remain decisive.
Deployment engineering
Choose the mobile platform around access, payload and operating environment
Plan the vehicle as part of the measurement system. Coordinate load modules, cooling, ventilation, supply, cable routing, mass distribution, operator access and protection.
Calimera can be used as a mobile service system, an integrated van or pickup laboratory, a trailer solution, or a controlled stationary laboratory setup.
Software and reporting
Configure operating points and review voltage and current traces.
Configure test points in comframe, review measurements and device events, and create the PDF report.
Define the operating points
Set voltage, current and dwell time for each point in the Calibration Points area.
Review the recorded trace
Review voltage and current over time in the oscilloscope area. The example uses Replay for an existing recording.
Create the report
After the measurement workflow, use Test Report to create the PDF test report.
Configuration, measurement display and PDF reporting
- Test-point configuration
- Configure test points and their activation period.
- Measurement display
- Review AC/DC measurements in the graphical oscilloscope view or the measurement data.
- Device status and events
- See the device operating status and information about malfunctions.
- PDF reporting
- Save the test report as a PDF file.
Use the measurement workflow in the field, laboratory and production.
Use the measurement chain for on-site calibration, checks after service and laboratory procedure development. Add the Calimera GUI and a suitable AC or DC power meter to Easy Chester EOL or EOL HPC for production measurements.
Configure the complete system
Build the EVSE calibration system around the approved measurement task
Specify the charger portfolio, operating points, metrology framework and required evidence.
Charging technology
CCS1, CCS2, CHAdeMO, NACS, Type 1 or Type 2.
Electrical scope
Voltage, current, power, Standard mode and Boost mode. Match the load and cooling to the required voltage, current and dwell time.
Reference chain
Power meter, calibration status, interface and uncertainty.
Mobility
Case, van, pickup, trailer or stationary laboratory.
Market framework
ISO/IEC 17025, OIML, Eichrecht, VDE or NIST context.
Evidence
Identifiers, data, reports, approvals and traceability.
Frequently asked questions
Easy Chester Calimera FAQ
The released quotation, calibration scope and market approval remain authoritative for the final system.
Why use a controlled load instead of a vehicle?
Calimera uses controlled real load and reference measurement to make selected operating points repeatable within its configured range. A vehicle follows its battery state, temperature and charging curve, so a vehicle and adapter cannot freely reproduce every voltage/current point needed for a complete metrological test.
The PTB presentation explains this limitation and states: “Benötigen ein voll-ausgestattetes Labor an der Ladeeinrichtung”.
The permitted method depends on the task: calibration, formal verification (Eichung) and an in-service investigation (Befundprüfung) have different purposes. GM-P 6.8 includes procedure-specific vehicle use for a Befundprüfung; this is not a universal ban on vehicle-based checks. The applicable procedure determines the required test points and any permitted exceptions.
What is Easy Chester Calimera?
It is a mobile EVSE calibration system for traceable on-site calibration and metrological verification of installed AC and DC charging infrastructure.
Why calibrate a charging station on site?
The charger remains in its real electrical, thermal and operational environment. The complete measurement chain is brought to the place where energy is delivered.
Which charging technologies can be supported?
Published configurations cover CCS1, CCS2, CHAdeMO, NACS, AC Type 1 and AC Type 2. Exact connectors and protocol versions depend on the released system.
How do operating modes relate to catalogue configurations?
Catalogue ratings identify the selected configuration. Supported voltage/current combinations, holding time and thermal recovery depend on the load, cooling and reference-meter range. These operating limits must match the measurement task. View the configuration table.
Which Calimera configurations are listed in the brochure?
Calimera-062: 40 kW DC and 22 kW AC; Calimera-130: 130 kW DC; Calimera-152: 130 kW DC and 22 kW AC; Calimera-282: 260 kW DC and 22 kW AC. AC and DC ratings are separate values. Reference-meter range, load limits and holding time must match the measurement task. View the configuration table.
Can Calimera cover 400 V and 800 V charging systems?
Yes. The published voltage range is intended to cover typical 400 V and 800 V charging technology. Required current, power and holding time must be specified separately.
Field workflow planning
Configure your Calimera calibration system.
Specify the AC/DC operating points, reference meter, load and cooling, mobile platform and measurement report required for the calibration task.
Easy Chester product roles
Choose Calimera for charging-station energy calibration.
Calimera
Traceable reference comparison, controlled operating points and a calibration record.
Commissioning, safety, function, service, repair and periodic inspection.
ProductionRepeatable end-of-line function, communication and parameter verification.
High-power productionHigh-power production cells with load, cooling, safety logic and traceability.
EVSE calibration knowledge
Plan the measurement scope for real-load verification.
Plan the controlled load, operating points and measurement chain for repeatable EVSE calibration and verification.