42
● If leakage currents flow in the circuit following the RCD, it may influence the
measurements.
● The potential fields of other earthing installations may influence the measurement.
● Special conditions of RCDs of a particular design, for example S- type, should be taken
into consideration.
● The earth electrode resistance of a measuring circuit with a probe shall not exceed table1.
● Equipment following the RCD, e.g. capacitors or rotating machinery, may cause a
significant lengthening of the measured trip time.
