Specifies requirements for power metering and monitoring devices
(PMD) that measure and monitor the electrical quantities within electrical distribution systems,
and optionally other external signals..
Specifies the requirements for the insulation fault location system
(IFLS) which localizes insulation faults in any part of the system in unearthed IT a.c. systems
and unearthed IT a.c. systems with galvanically connected d.c. circuits having nomin..
Specifies the general requirements for measuring and monitoring
equipment for testing the electrical safety in low voltage distribution systems with nominal
voltages up to 1 000 V a.c. and 1 500 V d.c...
Specifies the requirements applicable to equipment for measuring the
loop impedance between a phase conductor and the protective conductor or between a phase
conductor and neutral or between two phase conductors by using the voltage drop when the
..
Specifies the requirements for combined measuring equipment which
combines into one piece of apparatus, several measuring functions or methods of testing,
measuring or monitoring according to the respective parts of IEC 61557...
Specifies the requirements applicable to equipment for measuring the
resistance of earth conductors, protective earth conductors and conductors for equipotential
bonding, including their connections and terminals, with an indication of the measured..
Specifies the requirements for measuring equipment applied to the
testing of the effectiveness of protective measures by regular disconnections of residual
current protective devices (RCD) in TT, TN and IT systems...