STUDI KOORDINASI KERJA RELE DIFERENSIAL DAN RELE RESTRICTED EARTH FAULT SETELAH UPRATING PADA TRANSFORMATOR II DI GI KAPAL

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One way to rtidiate m impulse-like waveform is to employ a TEM-fed paraboloidal reflector mtenna. Various performance features of this antenna, such as prcpulse, impulse amplitude, impulse width etc., h:~vcbeen an;dyzcd in the past ( 1 to 8]. It hos been obscrveci that the low frequency or Iatc-time pcrforrmmce of this fotm of an IRA is governed by the elecrnc and magnetic dipole morncnts. A kn...

Effects of Vitamin A and Iron Fortifïed Supplementary Food on Vitamin and Iron Status of Rural Preschool Children in Vietnam

Seperti banyak negara yang. sedang berkernbang, Vietnam menghadapi berbagai masalah kesehatan yang berkaitan dengan gizi pada berbagai kelompok umur dan penduduk. Diantara masalah-masalah tersebut, kckurangan yitamin A, anemia defisiensi besi dan 8an88uan Pertumbuhan pada anak-anakprasekolahpadawaktu ini mendapat perhatian khusus. Prevalensi kekurangan vitamin A pada tahun 1985-1988 sebesar 0,0...

Purification of the RelB and RelE proteins of Escherichia coli: RelE binds to RelB and to ribosomes.

The direct interaction of the Escherichia coli cytotoxin RelE with its specific antidote, RelB, was demonstrated in two ways: (i) copurification of the two proteins and (ii) a positive yeast two-hybrid assay involving the relB and relE genes. In addition, the purified RelE protein exhibited ribosome-binding activity in an in vitro assay, supporting previous observations suggesting that it is an...

Universita ’ Degli Studi Di Napoli Federico Ii

A New Restricted Earth Fault Relay Based on Artificial Intelligence

The restricted earth fault (REF) relay is a type of differential protection which is used for detection of internal ground faults of power transformers. But, during external faults and transformer energization conditions, the probability of current transformer (CT) saturation increases. Thus, the spurious differential current due to CT saturation, can lead to REF relay maloperation. In this pap...