EV Charging Analyzer for EV and EVSE teams
Electric vehicle tester for the lab: find charging faults before your customers do
EVCA simulates the vehicle or the charging station, records communication and power on one timeline and checks both against the standard before release, so your customers do not find the faults first – instead of a bench built from a source, a load, an oscilloscope and a sniffer.1
“Currently the best and most complete vehicle simulator / sniffer / man in the middle we have used.” – Montagna Giampiero, KEMA Labs
- What for
- EV and EVSE teams in development, validation and field analysis.
- What it does
- Six systems, one software: simulate the vehicle or the charger, record communication and power on one timeline and check both against the standard.
- Not for
- Installation checks of single chargers – that is Easy Chester; replacing formal conformance testing.
Electric vehicle tester
What EVCA tests on the electric vehicle
As an electric vehicle tester, EVCA takes the role of the charging station. It tests what the vehicle does at the charging interface: the EVCC, its charging communication and its response to the station’s signals. With a power configuration, EVCA also tests the DC charging process itself. The relevant standards are DIN 70121, ISO 15118-2 and -20 and IEC 61851; supported editions and test cases depend on the released Test Library.1
“Electric vehicle tester” also stands for two services: tests in an external laboratory and interoperability testing. The table shows what fits your task.
| Option | What it tests | Repeatability | Typical users | Best choice when |
|---|---|---|---|---|
| External test laboratory | Conformance or certification tests on your vehicle or charger, as a service | Per test order | OEMs and manufacturers before certification | You need an independent report or a certification |
| Interoperability testing | How your vehicle or charger works with real counterparts – in-house or through a test service provider | Per test campaign or test event | OEMs, charger manufacturers and charge point operators | You need to know how real vehicle–charger pairs behave |
| EVCA in your own lab | Charging interface, charging communication and – with a power configuration – the DC charging process, against a simulated charging station; EVCA Interop also records real pairs | Saved configurations run again after each software change | EV and EVSE teams in development and validation, test laboratories | You find and fix charging faults before release; EVCA does not replace formal conformance testing |
A charging fault that reaches the field becomes a service call, a support ticket and, in the worst case, a recall.
Commissioning or servicing installed charging stations?
For commissioning and service, Easy Chester guides you through the configured installation and field checks and documents the results. Micro covers AC tasks; Ultimate adds DC charging tests.
Shared software and test methods
EV charging simulator: reuse test methods across EVCA systems
Every EVCA system uses charging-specific software and reusable workflows. Measurements stay together with the conditions under which EVCA recorded them.
comframe links protocol states, timing, low-level signals and measured values with normative expectations.
The configured EVCA simulates the counterpart your DUT needs, or measures a real charging pair. We select interface, power level and supported faults per project. Chamber connection or real-pair setup come in where the task requires it.
Reuse your approved configurations, test logic and recorded charging sessions – on the next project and the next EVCA system.1
Six system paths
Choose your EV or EVSE test configuration
In the January 2025 customer project, EVCA Multi Mobile connects on-site testing with a Gustav Klein power source in the laboratory.
Six EVCA systems, one software: pick by what you test – a controller, a real vehicle–charger pair, a portable setup, lab power, MCS or EMC.
EVCA ComOnly
Develop EVCC or SECC communication with protocol analysis, nominal and advanced simulation and the applicable Conformance Test Libraries at the controller bench.
- Primary DUT
- EVCC or SECC
- Environment
- Bench and laboratory
- Use when
- Protocol behaviour is what you test
EVCA Interop
Interop records the real charging pair on one timeline, locates the deviation and tests the proposed correction under defined conditions.
- Primary DUT
- The real charging pair
- Environment
- Field and laboratory
- Use when
- You need to investigate how a real vehicle and station interact
EVCA Multi Mobile
Portable multi-standard hardware covers EV simulation, EVSE simulation and real-pair analysis in the vehicle, laboratory or field.
- Primary DUT
- EV, EVSE or real pair
- Environment
- Mobile laboratory and field
- Use when
- One portable system must cover several roles
EVCA Flex
A modular EV or EVSE test environment grows around external source and load hardware, synchronised measurement, electrical faults, high-power operation and standards-specific test hardware.
- Primary DUT
- Complete EV or EVSE charging system
- Environment
- Laboratory and validation centre
- Use when
- Power, faults and deeper physical verification matter
EVCA MCS
Address MCS EV, EVSE and communication testing with charging-specific protocol, low-level signals, temperature and cooling interfaces and scalable power integration.
- Primary DUT
- MCS EV, EVSE or controller
- Environment
- MCS laboratory and system test
- Use when
- The complete megawatt charging stack must be controlled
EMC Link
A transparent optical link keeps charging communication running through the EMC chamber while the approved measurement and test systems stay outside.
- Primary DUT
- EV, EVSE or charging interface under EMC stress
- Environment
- EMC chamber
- Use when
- The chamber boundary must not distort communication
Expand your EVCA system
Keep the core. Expand your test system.
The EVCA core is the central component of the system. In a compatible expansion, move your existing core into a larger EVCA body. The workflow and test logic remain connected in comframe.
Your EVCA coreThe brain you keep
The same EVCA coreHardware for the next test task
Flex adds power, switching and fault-test hardware for the next stage.
comframe
Shared software + test logic
Begin with communication
EVCA ComOnly provides the starting point for controller communication tests.
Begin with the real pair
EVCA Interop provides the starting point for real-pair investigations.
Multi Mobile adds portable EV and EVSE testing
EVCA Multi Mobile extends testing to portable EV, EVSE and interoperability work.
Flex adds power, faults and standards hardware
EVCA Flex adds external power, switching and physical fault-test hardware.
Customer system: EVCA Flex for certification laboratories. System of the Month.
Charging standards EVCA covers
EVCA connects the device role with the interfaces it needs: for a vehicle it simulates the charging station, for a charger it simulates the vehicle – and records communication alongside electrical measurements. This overview identifies the relevant charging standards; supported editions and test cases depend on selected modules and the released test library.
| Interface | Standard and protocol context | Define in the test plan |
|---|---|---|
| CCS1 / CCS2 | DIN 70121, ISO 15118-2 and ISO 15118-20 | Communication profile and released functions, including Plug & Charge, are specified together. |
| AC / DC | IEC 61851-1, IEC 61851-23 and IEC 61851-24 | Basic signals, the DC power path and communication scope are specified separately. |
| CHAdeMO | CHAdeMO protocol and corresponding interface | Hardware, protocol version and device role are selected per project. |
| GB/T | GB/T 27930 and GB/T 18487.1 | The Chinese DC communication and electrical-interface editions are identified per project. |
| North America | NACS / SAE J3400 and SAE J1772 | Coupler, AC/DC operation and communication profile are specified together. |
| MCS | Megawatt Charging System | Megawatt charging has its own EVCA MCS configuration. |
ISO 15118 and IEC 61851 address different parts of charging tests. Protocol edition, Test Library release, electrical operating range and supported fault insertion are specified together. This makes the requirement behind each result traceable and shows where another test is needed.
comframe supports this comparison on every EVCA system. Simulation reproduces defined partner behaviour; real-pair analysis records what both partners actually do. We match the test plan to the actual configuration: not every EVCA variant covers every interface or standard clause.
Also known as: EV Charging Analyzer, electric vehicle tester for the lab, EV charging simulator, EV charging test system for charging communication testing. Testing installed chargers in the field? That is a job for the EV tester for commissioning and service. Understand standards and test scope · EVCA MCS
EVCA capabilities
What the EV Charging Analyzer checks
The EV Charging Analyzer can analyse charging behaviour, introduce supported faults and repeat recorded scenarios. Analysis, manipulation, reproduction and automation functions follow the selected EVCA product and software release.
comframe relates measured charging behaviour to normative expectations automatically.
Nominal, boundary and non-conform charging behaviour are configurable in depth.
ValidateManipulating Gateway tests a live correction hypothesis between real charging partners.
ReproducePhysically reproduce recorded protocol-level charging behaviour at the interface.
AutomateTurn saved configurations into repeatable charging campaigns.
VerifyReleased, versioned standards-based test logic runs with attributable verdicts.
Customer experience
Customer voices on the EVCA platform
“The charging specialists at umlaut use the comemso EV Charging Analyzer in our EFECT lab at the Braunschweig site. Since our collaboration with comemso has been excellent for many years, umlaut has once again upgraded the EFECT with comemso hardware.”
“Currently the best and most complete vehicle simulator / sniffer / man in the middle we have used.”
Charging test equipment for lab, production and field use
In the development lab, the EV Charging Analyzer forms part of a defined test setup. Identify whether the vehicle, EVCC, station or SECC is the device under test. Record firmware, communication profile, load conditions and the expected result. This lets you repeat a fault from the same initial conditions rather than collect a failed charging session without a reproducible starting point.
For AC charger testing, define the required signals and the response to normal or deliberately changed conditions. DC tests also require the appropriate power path and load configuration. As an electric vehicle tester, EVCA connects measurements to the communication sequence. Use test equipment that makes both layers available when investigating a charging interruption.
For production, release a repeatable test sequence for each variant and associate results with the tested unit. Specify limits, version status and what happens after a failed test. Compare the required EVCA scope with Easy Chester EOL when selecting a specialised production solution.
For analysis in the field, a portable EVCA configuration investigates communication and product behaviour. Commissioning, service and electrical-safety inspection are a different job. Easy Chester Micro tests AC wallboxes. Easy Chester Ultimate, the EV charger tester for field use, tests AC and DC chargers. The page EV tester for commissioning and service shows how such a test runs. One setup rarely covers all field tasks – the result you need decides the equipment.
For environmental and EMC tests, the device, exposure and measurement chain determine the arrangement. Locate equipment according to its permitted operating conditions and use a suitable EMC configuration at the chamber boundary. Connecting the EV Charging Analyzer outside a chamber to a device inside it differs from exposing the entire test instrument to chamber conditions. EV charging simulation must remain defined while the device experiences the selected environment.
EV testing · EVSE testing · EV tester for commissioning · EMC Link
Platform FAQ
EVCA selection and configuration FAQ
Is EVCA one physical device?
EVCA is a family of test systems for different charging tasks. Applicable systems share charging-specific software, capabilities and test methods; the hardware is selected for the charging interface and physical test scope.
Does every EVCA contain every capability?
No. Capability availability depends on the selected product, charging standard, role, software modules, licences, Test Libraries, interfaces and released configuration.
Can the EVCA test AC and DC chargers?
Yes, the platform includes appropriate AC and DC configurations. The interface, device role and electrical operating range must match the test. Define the test plan first. A test system for development and analysis can require different equipment from an instrument used for electrical-safety checks at installed charging points.
Customer projects, success stories and technical articles related to this page.
- Success storyTÜV Austria: certification and EMC testingWatch the comemso customer reference from TÜV Austria, presented in the EV Charging Analyzer portfolio under certification and EMC testing.
- Customer projectEVCA AC for ISO 15118 and End-of-Line TestingEVCA AC combines three-phase charging tests and ISO 15118 communication with Expert and Production modes, plus REST integration for end-of-line testing.
- Customer projectEVSE Testing for an Independent InstituteAn independent institute extends AC and DC CCS EVSE testing with EVCA, including IEC 61851-23 test functions for its laboratory configuration.
- KnowledgeIEC 61851-23:2023: changes for DC testingReview IEC 61851-23:2023 changes for DC charging tests. Define the charging system, applicable annex and normative edition.
EVCA system planning
We specify DUT, interfaces and software for your EVCA configuration.
15-minute demo. An engineer shows your vehicle or charger test case on a real EVCA system.Written quotation. System, interfaces, power equipment and Test Libraries for your task – then you order.Delivery and start. Commissioning and training are agreed in the quotation.