The combination of electricity and the sun make temperature measurement a must. Infrared cameras are perfect when inspecting PV modules, electrical panels and breaker panels to detect hotspots. They're also good tools to use when monitoring cooling fluid levels, such as dielectric oils for transformers. When. Solar plant electrical measurement requires a tool that can measure both AC and DC voltage. A digital multimeter is the right tool for quick voltage detection as well as installation and. A reliable clamp meter can be used for verifying the presence of AC/DC load current. Clamp meters can also measure voltage and continuity. It should be able to measure 1,000 A AC/DC (2,500 A AC with iFlex) in combiner boxes,. One of the key components that needs to be checked on a solar + storage system is the battery. A battery analyzer can perform troubleshooting and. Insulation testers have a wide range of tests they can perform, including simple spot checks, timed tests and breakdown tests. They can also help.