LTW315 Earth Loop Tester

The entry-level tester in Megger's earth loop tester range, the LTW315 is used for carrying out 2 wire loop impedance measurements on phase to earth or phase to neutral.

Guaranteed not to trip working RCDs of more than 30mA thanks to a non-trip loop test and compatible with both three and single phase systems, this tester makes performing measurements easier by requiring the use of only 2 test leads in order to carry out measurement procedures. When there is no risk of tripping an RCD it is also possible to use high current loop testing mode.

When carrying out no-trip testing procedures the LTW315 constantly evaluates the level of noise detected on circuitry to ensure that the accuracy of results is not modified by the presence of electrical noise.

The Megger LTW315 is part of the LTW range of earth loop testers. The following table outlines the difference between each of the available models in this series.

• 2-wire loop testing procedures on phase to earth and phase to neutral


• Guaranteed to not trip out RCDs thanks to non-trip loop testing


• Noise detection filters out electrical noise that can create erratic readings


• Resolution down to 0.01Ω


• Portable lightweight instrument with tough carrying case encasing the tester


• AUTO start function starts testing as soon as the leads are connected


• PFC display up to 20kA