EVSE testing and calibration
Easy Chester Micro: AC EVSE installation tester
Commission AC charging stations and wallboxes with one compact EVSE installation tester. Easy Chester Micro combines grid-side and EV-side electrical safety tests, phase-sequence checks, charging-function tests and ISO 15118-2 communication with EIM authentication in a guided installation and inspection workflow.
Use Micro for AC commissioning, maintenance and periodic inspection. Select the required safety scope and options. For additional DC charging tests, choose Easy Chester Ultimate.
Commissioning starts with electrical safety
Use the compact AC installation tester for commissioning, maintenance and periodic inspection of charging stations and wallboxes. Document the station, configuration and results for handover and repair verification.
Electrical safety on the grid side and EV side
Match the grid-side and EV-side electrical safety measurements, phase-sequence checks and charging-function tests to the installation and inspection plan. Assess the protective measures separately from whether the station starts charging.
AC ISO 15118 communication: available now and planned
AC ISO 15118-2 communication testing with EIM authentication is available now, alongside charging-function and safety tests. EIM stands for External Identification Means: charging is authorised through an external identification method. An ISO 15118-20 communication-test extension is planned for Q1/2027. It remains a roadmap item until release; its technical protocol scope is described below.
Maintenance and verification after repairs
Repeat the relevant checks after repairs or changes and during periodic inspection. Annual maintenance can be supported where it is part of the site’s maintenance plan; inspection intervals depend on the applicable requirements and operating conditions.
Released scope and roadmap
AC installation and communication testing in one device
Check the AC installation and communication tests available now, and the planned extension.
Grid safety, EV safety and phase-sequence testing
Guided AC charging checks with the configured installation and safety measurements.
ISO 15118-2 with EIM authentication
Easy Chester Micro communicates natively using AC ISO 15118-2 with EIM authentication. No external protocol converter is required. The report records the ISO 15118-3 connection setup, the ISO 15118-2 communication steps and the PLC attenuation value.
ISO 15118-20: planned for Q1/2027
The planned extension remains labelled as roadmap until the corresponding product release is available.
AFIR preparation: use the native ISO 15118-2 test to check the PLC foundation shared with wired AC ISO 15118-20 communication. Micro provides evidence for this defined test scope, not a complete AFIR conformity assessment. TLS-protected charging sessions remain outside the described Micro scope, including the planned ISO 15118-20 extension. Review the AFIR evidence map.
AC communication and documented evidence
AFIR preparation: check PLC communication at AC charging points
Verify the PLC connection, inspect the communication sequence and document the result directly with Easy Chester Micro.
ISO 15118-2 and ISO 15118-20 share a PLC foundation
For the wired AC communication considered here, both ISO 15118-2 and ISO 15118-20 need functional Power Line Communication (PLC) hardware and a working signal path. Easy Chester Micro establishes ISO 15118-2 communication natively, with EIM authentication and no external protocol converter. This checks whether the charging point can establish and use its PLC connection with the tester.
Use attenuation to investigate the coupling path
Micro reports the attenuation value from Signal Level Attenuation Characterization (SLAC) during ISO 15118-3 connection setup. Unusually high attenuation can indicate an impaired signal path, including indirect coupling through crosstalk instead of the intended connection to the PLC hardware. Evaluate the value together with the communication sequence and the physical setup to investigate the cause.
Attenuation is a diagnostic indicator. A single value alone does not prove correct wiring or identify crosstalk conclusively.
Keep the attenuation and communication steps in the report
The test report documents the attenuation value and each communication step performed according to ISO 15118-3 and ISO 15118-2. Keep this evidence with the inspected charging point for commissioning, fault diagnosis and verification after repairs.
Why this matters for AC: AFIR Annex II, as amended by Regulation (EU) 2025/656, covers newly installed or renovated public AC and DC points. From 8 January 2026 it specifies EN ISO 15118 Parts 1–5; from 1 January 2027 it requires EN ISO 15118-20. Points offering Plug & Charge from that date must support both -2 and -20.
One device with a guided test workflow.
Built to travel, open and guide the next test.
Easy Chester Micro with its operating interface.
Choose by field task
Micro for AC commissioning and electrical safety checks.
Choose Ultimate when your installation tests also require DC.
- AC and DC configurations are required.
- Keep the shared AC installation and safety functions.
- Use the same guided standalone field workflow.
- ISO 15118-2 with EIM authentication must be covered for AC and DC.
Test an AC wallbox with Easy Chester Micro
Test a wallbox after installation, repair or during maintenance using a defined inspection plan. Easy Chester Micro is an AC installation tester combining electrical-safety checks with charging function and communication available in its actual configuration. Record the wallbox identity, connection, firmware and reason for inspection.
Prepare a safe setup and use appropriately qualified personnel for the required work. Select the inspections applicable to the installation and device. Check the grid and EV sides, responses to defined vehicle states and the intended charging sequence. Communication checks need the appropriate released profile; planned extensions must remain distinct from functions available today.
After repair, repeat the original fault and the affected checks. Keep measurements, conditions and assessment together in the inspection report. When maintaining several charging points, associate each result with the correct wallbox. DC tasks need an appropriately equipped tester; Micro is intended for AC installation testing.
Frequently asked questions
Easy Chester Micro FAQ
Which EVSE does Easy Chester Micro test?
Easy Chester Micro is a compact AC EVSE installation tester for charging stations and wallboxes. Use it for installation, commissioning, maintenance and periodic inspection. It combines configured grid-side and EV-side electrical safety tests, phase-sequence checks, charging-function tests and ISO 15118-2 communication with EIM authentication. DC charging tests require Easy Chester Ultimate.
Does Easy Chester Micro support ISO 15118-20?
An ISO 15118-20 communication-test extension is planned for Q1/2027. It remains a roadmap item until the corresponding release is available.
Why does testing remain relevant after 1 January 2027?
ISO 15118-20 adds communication requirements beyond the existing ISO 15118-2 test. Micro can already document the PLC foundation and the released ISO 15118-2 test sequence for wired AC charging. These records remain useful for commissioning and fault diagnosis; assessing ISO 15118-20 and complete AFIR conformity requires the corresponding additional evidence.
How is Easy Chester Micro different from Ultimate?
Micro provides the AC functionality of Ultimate, including installation, electrical safety, phase-sequence, charging-function and communication testing. Ultimate adds DC charging tests.
What can Easy Chester Micro check for AFIR preparation?
Easy Chester Micro tests native AC ISO 15118-2 communication with EIM authentication and documents the ISO 15118-3 connection setup, communication steps and PLC attenuation. Functional PLC hardware and its signal path are a shared foundation for the wired AC ISO 15118-2 and ISO 15118-20 communication considered here. The existing PLC test does not demonstrate ISO 15118-20 protocol compliance or complete AFIR conformity. The ISO 15118-20 extension remains planned for Q1/2027.
What does the PLC attenuation value show?
The attenuation value describes signal loss during SLAC connection setup. Unusually high attenuation can indicate an impaired signal path, including possible indirect coupling through crosstalk. Evaluate it with the communication sequence and physical setup. Attenuation alone does not prove correct wiring or identify crosstalk conclusively. Micro includes the value and each performed ISO 15118-3 and ISO 15118-2 communication step in the test report.
Field workflow planning
Configure Easy Chester Micro for AC inspection.
Specify the AC charging connection, required installation and safety checks, and report format for your compact field tester.