Applications / EVSE Testing
EVSE Testing for Charging Station Validation
Test the charging station with a system that acts as an electric vehicle. Repeat a normal charging session, introduce a defined variation and compare the station’s response before and after a software update.
Develop your next EVSE release. Extend the evidence from your test bench.
New charging functions, higher power and electrical fault tests can take an existing test setup beyond its original scope. Define the vehicle behaviour, fault cases and reports your next project needs before selecting the system configuration.
For an observed real EV–EVSE failure, keep passive observation separate from a simulated counterpart. A common time base helps inspect the captured signals; it does not by itself prove causation.
For EVSE development teams
Your test bench needs to grow with your charging station.
If you are extending or replacing an existing test system, compare the daily workflow, the required test scope and the engineering support behind it. Connect the choice to your own charging station and release targets.
- 01Starting point
An established EVSE test setup needs new functions, power ranges or fault simulations.
- 02Options to compare
Extend the existing setup, add specialist test equipment or move to another system.
- 03Evidence for the decision
A usable software workflow, the relevant electrical test cases and a demonstrated setup for your DUT.
- 04Next step
Review your existing system and planned tests with comemso; agree the configuration and a suitable demonstration.
Three reasons to choose comemso
Understand the behaviour. Challenge the station. Evaluate the partner.
In a recent system expansion, an EVSE manufacturer chose EVCA Multi Mobile, EVCA Flex with IEC 61851-23 and EVCA MCS. These three points were decisive.
Analyse automatically. Simulate deliberately.
comframe connects automated analysis with Professional Simulation: compare the measurement with configured expectations, highlight deviations and vary supported message values, timing and sequences. ISO 15118-4/-5 SECC TestLibs are already released in comframe.
Explore the comframe application workflow →
Full Annex CC.7.5 test scope, demonstrated
In the matching EVCA Flex configuration, comemso demonstrated the full test scope of IEC 61851-23 Annex CC.7.5 on a customer’s charging station. Dedicated switching and fault hardware lets you provoke electrical faults and measure how the EVSE reacts.
Review the Flex test configuration →
An engineering partner with short implementation paths
The site visit made the company’s development tangible: software, electronics manufacturing, assembly, wiring and system testing at one location. Direct feedback and our own equipment support fast iterations. These capabilities strengthened the customer’s confidence in the partnership.
Explore development, manufacturing and testing →Bring your existing system, target standards and DUT requirements into the discussion. We will define the necessary hardware, released software scope and a demonstration suited to your project.
Discuss your EVSE test projectOne charging station. Evolving test tasks.
The right test system, from EVSE development to service.
Find the comemso systems for your current test task and the next stage of your charging station. This overview connects seven areas of the EVSE lifecycle with the appropriate product families.
10+ years in the life of a charging station
The overview follows a charging station across a product life of ten years or more. Its test tasks evolve from development and verification to production, operation and service. Choose the system that fits each task.
Find the system for your test task
Open a test area to see its tasks and the relevant products.
Design & engineering
Develop and check EVSE communication and control functions before the complete high-power system is available.
Type testing & verification
Investigate conformance, electrical behaviour, safety functions and EMC with a setup matched to the required tests.
Manufacturing
Transfer validated requirements into repeatable end-of-line tests with reports and traceability.
Installation & commissioning
Check protective measures, communication and charging function before handing over the installed charging station.
Operation
Verify energy measurement and billing accuracy under field conditions.
Interoperability
Investigate charging reliability and communication across vehicles and charging stations from different manufacturers.
Service & maintenance
Locate faults, verify repairs and document recurring inspections throughout the operating life of the charging station.
Application first
Keep the charging station as the DUT. Control the vehicle side.
EVSE testing verifies the electrical, functional and communication behaviour of electric vehicle supply equipment. The test system represents the EV side and creates repeatable normal, boundary and fault conditions. Required depth depends on whether the current decision concerns a controller, complete charger, production line or installed asset.
Development and laboratory validation
Test SECC communication, EV simulation, low-level signals, protocol timing, conformance, robustness, power, safety and faults before field deployment.
EVCA ComOnly, EVCA Flex and Test LibrariesManufacturing and end-of-line
Verify parameters, charging function, communication, electrical behaviour, safety-relevant outputs, automation and traceability before every unit leaves production.
Easy Chester EOL, EOL HPC, EVCA and comframeInstallation, operation and service
Confirm correct installation, protective measures, real charging function, reporting, billing accuracy, repairs and recurring inspection at the site.
Easy Chester Ultimate and Calimera
EU regulation and market access
AFIR connects communication readiness, interoperability and operational evidence.
AFIR is broader than one protocol test. For EVSE development, the technical transition includes continued ISO 15118-2 support and growing ISO 15118-20 readiness, while deployment also requires separate attention to payment, pricing, backend connectivity and data obligations.
Communication readiness
Verify current ISO 15118-2 behaviour and prepare the SECC hardware and software for the required ISO 15118-20 scope.
Coexistence and Plug & Charge
Plan the public charging infrastructure so legacy and newer vehicle implementations remain supportable.
Lifecycle evidence
Combine conformance, interoperability, power, fault reactions, commissioning and field verification instead of treating readiness as one pass/fail test.
Scope boundary
Payment certification, legal assessment, pricing transparency, backend connectivity and data obligations remain separate responsibilities.
Test depth and standards-aware analysis
Test the complete charging process. Find the first inconsistency.
EVSE testing is not one test case. Reliable charging requires protocol, low-level states, power, electrical safety, automation and evidence to describe one coherent session.
View the analysis diagram at full sizeAutomation and evidence
Reusable configurations, campaigns, reports and traceability.
EV and cable simulation
Battery requests, connection states, Control Pilot (CP), Proximity Pilot (PP) and technology-specific low-level signals.
High-level communication
DIN 70121, ISO 15118, CHAdeMO, GB/T and MCS according to scope.
Protocol conformance and timing
Message content, sequences, timeouts, optional paths and negative behaviour.
Power and energy transfer
Requested and measured voltage, current, power, ramps and shutdown.
Electrical safety and faults
Protective functions and reactions to electrical, signal and communication faults.
EVCA Interop and Charge Playback
Turn real vehicle behaviour into a repeatable EVSE laboratory test.
A charging-station issue may appear only with one concrete vehicle implementation. EVCA Interop captures the real EV-to-EVSE interaction. Charge Playback then converts supported EV-side PLC (power line communication) content and timing into an active physical charging partner for the EVSE under test.
Real charging session
A real EV and EVSE interact under the field or interoperability condition that matters.
Record
Capture the EV-side PLC content, timing and related charging measurements from the real session.
Extract
Extract the behaviour needed for a supported EV simulation configuration and preserve its origin.
Active simulation
Present the recorded vehicle behaviour actively to the EVSE through the physical charging interface.
Repeat and modify
Repeat the charging-station test with one vehicle-side condition changed at a time. Carry the observed EVSE response into automation and regression.
Replay reproduces data for the engineer.
Charge Playback reproduces charging behaviour for the device under test.
Investigate the real pair
EVCA Interop helps examine the charging station together with a real vehicle. EVCA Multi Mobile suits tasks that also require broader portable measurement and simulation of the vehicle-side charging partner, according to the selected configuration.
Explore EVCA InteropReproduce the vehicle
Use Charge Playback where released to present recorded EV-side behaviour at the physical charging interface and repeat the case against the EVSE.
Explore Charge PlaybackCharging technologies and standards
Use the same application logic. Specify the technology-specific interface.
Communication, low-level signals, power hardware, Test Libraries and released capabilities differ across charging technologies. Exact editions and product scope remain explicit.
AC charging
IEC 61851-1, SAE J1772 and ISO 15118 where applicable, with CP and PP simulation and functional testing.
DC CCS and NACS
IEC 61851-23, DIN 70121, ISO 15118-2, ISO 15118-3 and ISO 15118-20 according to configuration.
CHAdeMO
EV simulation, CAN communication, low-level behaviour and functional workflows for supported versions.
DC China / GB/T
GB/T 18487.1 and GB/T 27930 variants with technology-specific communication and state evaluation.
Megawatt Charging
10BASE-T1S, ISO 15118-20, CE and ID, auxiliary supply, temperature, cooling and high-power architecture.
IEC 61851-23 electrical test coverage, conformance profiles and high-power fault cases require the corresponding system hardware and released Test Library scope.
EVSE test equipment by lifecycle stage
Select the system by test objective, not by one headline specification.
Compare systems by lifecycle stage, hardware depth, ratings, interfaces and the released functions required for the test decision.
EVCA ComOnly
Protocol-focused EV simulation, analysis and development without full-power equipment.
EVCA Flex
Communication, signals, power integration, fault simulation, conformance and automation.
EVCA Multi Mobile
Portable multi-standard measurement and simulation for validation and field work.
EVCA Interop
Real EV-to-EVSE capture, synchronised evidence and field-to-laboratory transfer.
EVCA MCS
Dedicated MCS communication, signals, cooling and high-power architecture.
EMC testingEMC Link
Transparent optical charging communication across the EMC chamber boundary.
ProductionEasy Chester EOL
Repeatable functional, parameter and traceability workflows for manufacturing.
Easy Chester EOL HPC
Production and high-power end-of-line workflows with project-specific integration.
Easy Chester Ultimate
Guided function and electrical safety testing for installation, repair and inspection.
Easy Chester Calimera
Mobile on-site calibration and metrology-related verification.
Software and evidencecomframe
Configuration, synchronised analysis, automation, reporting and integration.
Conformance Test Libraries
Defined test cases, standard editions, DUT roles, verdicts and evidence.
Customer references
Proven in development, certification and real-world EVSE testing.
Named customer experience connects the test workflow with certification and charger validation.
“We ensure high-quality test results with the right test equipment”
“Thanks to the use of your equipment, we have achieved excellent results in our validation and certification process. Their quality and performance have exceeded our expectations.”
Validate bought-in EVSEs before release.
Operators and integrators need evidence for new suppliers and hardware or firmware changes even when they do not develop the EVSE themselves. Separate repeatable Easy Chester reference service checks from deeper EVCA laboratory qualification.
Frequently asked questions
EVSE testing
What is EVSE testing?
EVSE testing verifies the electrical, functional and communication behaviour of a charging station. The EVSE is the device under test, while the system represents the vehicle side and creates controlled conditions.
What is the difference between EV testing and EVSE testing?
During EVSE testing, the charger is the device under test and the system simulates a vehicle. During EV testing, the vehicle or EVCC (vehicle-side charging communication controller) is the device under test and the system simulates a charging station.
Can a charging station be tested without a real vehicle?
Yes. An EV simulator can reproduce low-level states and high-level charging communication. Depending on the test scope, it can coordinate a battery emulator or load for repeatable power testing.
What is the difference between a compact EVSE tester and a laboratory system?
A compact tester focuses on defined function, safety, commissioning or service workflows. A complete laboratory system can add protocol conformance, robustness, power, fault injection, automation, synchronised analysis and deeper configuration.
How does EVCA Interop support EVSE testing?
EVCA Interop captures a real charging station with a real vehicle and aligns the relevant technical layers on one time base. This helps identify issues that do not appear when the EVSE is tested against only one simulated partner.
What is the difference between conformance and interoperability?
Conformance testing verifies one implementation against defined requirements and test cases. Interoperability testing investigates how two concrete implementations behave together in a real charging session.
What are the best tools for testing EV charging stations?
Choose equipment by the test decision. Commissioning, maintenance and repair checks call for a suitably configured guided field tester such as Easy Chester. Laboratory validation may require an EVCA system for controlled EV simulation, power, fault insertion or synchronised communication and electrical analysis.
Interoperability investigations measure the real EV–EVSE pair; production and calibration need their own configurations. Compare connector and protocol coverage, electrical limits, safety and fault functions, measurement evidence and reporting before selecting a system.
| Test task | Starting point | What the setup should provide |
|---|---|---|
| Commissioning and field diagnosis | Easy Chester Ultimate | Configured charging, safety and fault checks with a documented field result |
| Controlled laboratory validation | EVCA | Selected EV simulation, interfaces, power equipment and repeatable test conditions |
| A failed real vehicle–station combination | EVCA Interop | Synchronised communication and electrical measurements of the real pair |
| Repeatable production acceptance | Easy Chester EOL | Released test sequence, unit identity, limits and a result for each station |
| Verification of delivered charging energy | Easy Chester Calimera | Controlled real load, suitable reference meter and the applicable metrology procedure |
These are configuration paths. Confirm connector coverage, electrical range, software functions and the required test procedure for the specific device under test.
Compare Easy Chester field and production paths · Compare EVCA laboratory and analysis paths
Charging-station test planning
Define the behaviour your EVSE must prove.
Specify the real charging-station DUT, simulated vehicle role, lifecycle and required evidence.