Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. – Equipment for testing, measuring or monitoring of protective measures – Part 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems
|Publication Date:||1 July 2011|
|ICS Code (Power transmission and distribution networks in general):||29.240.01|
|ICS Code (Measurement of electrical and magnetic quantities):||17.220.20|
|ICS Code (Electrical insulation in general):||29.080.01|
This part of IEC 61557 defines special performance requirements for hand-held and handmanipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems up to 1 000 V a.c. and 1 500 V d.c., taking into account the influence of high external low-frequency magnetic fields and other influencing quantities. This standard does not apply to current clamps or sensors which are used in combination with devices for insulation fault location according to IEC 61557-9, unless it is specified by the manufacturer.