Test equipment maker Chroma has introduced the Chroma 8000 EV & EVSE automated test system (ATS), which the company says is built for simultaneous multi-connector testing of DC EV supply equipment (EVSE), EV charging compatibility validation and liquid-cooled high-current charging tests.
Paired with the Chroma 80713 EV & EVSE simulator, the system supports testing against both ISO 15118-2 and ISO 15118-20 requirements, which Chroma says lets users perform interoperability and communication protocol validation across both versions of the standard.
Chroma describes ISO 15118-2 as the mainstream DC fast charging communication framework, applicable to compatibility testing for mass-produced EVs and charging stations. ISO 15118-20 extends it with support for Plug & Charge, wireless power transfer, bidirectional power transfer and Megawatt Charging System (MCS) applications.
ISO 15118-20 also adds Dynamic and Scheduled charging modes, which allow a charging strategy to be adjusted to grid conditions, and its support for bidirectional power transfer lets an EV feed electricity back into the grid. Communication security moves to Transport Layer Security (TLS) 1.3.
Higher DC fast charging power means higher currents, which raise the thermal load on the cable, the connector and the power modules behind them. Liquid cooling carries that heat away more effectively than air cooling.
Chroma says the 8000 ATS supports stable, long-duration high-current testing, and that its power switching design helps reduce the risk of test interruptions, making it suited to validating liquid-cooled charging connectors, high-power modules and MCS applications.
According to Chroma, its AC/DC charging test platform switches between power sources and loads to simulate charging scenarios, and dynamic data analysis and charge recording and playback functions let users monitor test results in real time and replay a charging session for validation.
Source: Chroma
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