5.2.2.2 Steady state voltage and current limits ES1: (1) d.c. : ES1<60V or 2mA (2) a.c up to 1 kHz : ES1<42.4Vpeak or 0.707mApeak; ES1<30Vr.m.s. or 0.5 mAr.m.s - not exceeding ES2 limits under single fault conditions of a basicsafeguard or of a supplementary safeguard. 比如:2个Y电容串联,短路1个Y电容。 ES2: (1) d.c. : 60V and2mA<ES2<120V or 25mA (2) a.c up to 1 kHz : 42.4Vpeak and 0.707mApeak<ES2<70.7Vpeakor 7.07mApeak; 30Vr.m.s. and 0.5mAr.m.s<ES2<50Vr.m.s. or 5mAr.m.s. Peak values shall be used for non-sinusoidal voltage and current. RMSvalues may be used only for sinusoidal voltage and current. 总结: ES1 ES2 ES3 ↓ ↓ ↓ AC: 42.4V——70.7V 0.707mA——7.07mA 30V r.m.s——50V r.m.s DC: 60V——120V 2mA——25mA ! \( R6 U; _; @$ D% a" t
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