Fluke - Importance of loop impedance testing

Measuring earth loop impedance and determining the Prospective Fault Current (PFC) are essential for safety and are part of the IEC (International Electrotechnical Commission) guidelines.
IEC 60364 standard (and its various national equivalents) specifies the requirements for fixed electrical installations in buildings - especially the verification of protections operating by automatic disconnection of the power supply.
The new Fluke 1650 multifunction installation testers feature a loop impedance testing function in addition to their capabilities of measuring short-circuit currents and Prospective Fault Currents (PSC & PFC).