A 1472, A1579 Leakage current clamp
12
On Fig.3 two non-sinusoidal leakage currents are shown.
Fig.3: Examples of atypical leakage current
Impaired safety due to fault, earth, touch voltages
Leakage currents that are flowing into earth and PE conductors cause a
voltage drop on exposed conductive parts. In case of inadequate protective
measures this voltage can increase above a safe level and presents a
danger for the people if it would be touched.
Furthermore if the protection devices are not respond in due time the
released energies on faulty spots can result in mechanical damage,
overheating or even fire.
For more information regarding safety aspects of fault currents refer to
METRELs handbook
Guide for testing and verification of low voltage
installations
.
