Measuring Connections Within An Industrial Power Or Ground System; Testing With A Two Wire 200 Ma Continuity Tester; Using Kelvin Test Leads (Probes Or Clips) - Megger DLRO10HD Guide D'utilisation

3. 2 Measuring connections within an industrial power or ground system

3. 2. 1 Testing with a two wire 200 mA continuity tester

Due to the convenience, a multimeter or continuity tester will often be used to verify connections on
industrial ground or power systems. These instruments are not designed for such applications and
cannot measure extremely low resistance to highlight the small increases that will waste energy or even
render ground systems much less effective.
Measurements will often look good reading <0.01Ω, but using an accurate DLRO / Ducter reveals the
true condition of connections.

3. 2. 2 Using Kelvin test leads (probes or clips)

This is an example of how the Kelvin probes or Kelvin clips can be used. In this case a clip is attached
to the bus bar and a probe is used to quickly and accurately measure each point of connection.
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