This standard specifies the general performance requirements of all electrical measuring relays and protection equipment used in the electrotechnical fields covered by the IEC. Supersedes IEC 255-6 (1978) and its first supplement 255-6 A (1980).

IEC 255-6 (1988); – the particular requirements applicable to time dependent or independent relays are given in IEC 255-3 (1989); – the particular requirements for disturbances testing are given in the new series of standards IEC 255-22, sections 1 to 4;

IEC-255-6 Electrical relays - Part 6: Measuring relays and protection equipment

iec 255-4 datasheet, cross reference, circuit and application notes in pdf format.

CEI/IEC 255-6: 1988 This is a free 6 page sample. Access the full version online. Validité de la présente publication Le contenu technique des publications de la CEI est cons-tamment revu par la CEI afin quil reflète létat actuel de la technique.

IEC 255-11: Interruptions to and alternating component (ripple) in D.C. auxiliary energising quantity to measuring relays IEC 255-6: Measuring relays and protection equipment IEC 255-21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment:

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3 1112 468 RAE L1 L2 L3 DESCRIZIONE Controllo asimmetria tensioni, sequenza fasi e mancanza fase in sistemi trifase. Forma d'onda sinusoidale. Autoalimentato.

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Automation & Protection. Features! High degree of reliability , even when it has been idle for a long time! PSU14n.. with mechanical flag type indicator ... Temperature-rise; Tested acc. to IEC 255-6 : Coil (class F) Insulation resistance; Tested acc. to IEC 255-5 : >100 M Ohm at 500 V dc