Lightning Impedance Tester: MODEL 4051

The 4051 lightning impulse impedance tester is used to inject a simulated
lightning impulse signal at up to 30 Amps between two electrodes such as
a Pylon footing and a remote test electrode.

A measurement of the ground impedance between between the two is
determined automatically and if the operator so chooses they may also
perform a further test to determine how the same impulse can affect the
potential of a nearby metallic object within the impulse path.

Two tests are available:
– Direct Impedance test
– Electrode Impedance test

These tests may be performed with one or both of the impulse wave shapes below:
8 / 20uS
10 / 350uS
More impulse shapes are available upon request, (contact RPI), however the two outlined above
have been found to give the most practical and consistently reliable results.