In lightning surge testing, is it possible to test an EUT that has voltage at the application point (e.g., output port of power supply equipment, power conditioner, battery, etc.)?

In lightning surge testing, is it possible to test an EUT that has voltage at the application point (e.g., output port of power supply equipment, power conditioner, battery, etc.)?

・LSS-6330 series: Testing is possible as standard if CDN voltage is not exceeded. Phase angle application is possible by turning LINE SW ON.

・LSS-F03 series: Firmware modification is required.
After modification, the CDN voltage must not be exceeded. Phase angle application is possible by turning LINE SW ON.