Single- and three-phase transformer testing Fast, easy hand-held operation. Powered by six standard “AA” alkaline batteries; no charger needed. Provides up to 12 hours of field operation. Measures turns ratio range of 10,000:1, with a high accuracy (±0.1%, 0.8 to 2000) at a low excitation voltage Records ratio errors for bushing CTs to an accuracy of±0.1% nameplate. This reduces the need for additional test equipment and improves set-up time. Perfect for meter shops, the TTR20 can be used for inspection purposes to determine the no-load accuracy of most CTs and PTs. It also can be used to determine the need to test potentially faulty CTs and PTs. Automatic self-calibration for each test. Simple, one-button operation Quick-start guide on front panel

Takes the heat. And the dust, water and 3-meter drop. The Fluke 62 MAX and 62 MAX+ are the only mini IR thermometers you can handle without care.