LT Megger loop testers

The LT Megger single- and three-phase loop testers are safe to use even if accidentally applied to live circuits.

The LT 310 (single-phase circuits) and the LT 320 (three-phase circuits) have non-tripping tests as well as a high current test.

Features include L-N-E polarity indication (and phase rotation for the LT 320) and prospective fault current in addition to loop impedance. A safety interlock shutter prevents incorrect application of test leads.

Colour-coded switches permit easy identification of tests and the instruments are designed for industrial use having sturdy cases with thick rubber bumper strips. Large, backlit numeral digital readout and segmental logarithmic analog LCDs provide user data.

The testers are provided with blown fuse indication and locking test button. Voltage measurement is a standard feature and the LT 320 three-phase tester also measures line frequency.