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Sepam - HV/MV Protection and control units (ENG) - Trinet

Sepam - HV/MV Protection and control units (ENG) - Trinet

Sepam - HV/MV Protection and control units (ENG) - Trinet

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ITestingCabling testing by current injection (cont'd)Yd couplingsYd9 Yd1 Yd5 Yd3 Yd7 Yd1163524163524163524163524163524163 ECM D25241654321SEPAM 2000ECM D3635241654321Measurement values available on the pocket terminalaccording to the currents injected:Special function - Idiff. <strong>and</strong> IthruId1= (k' − k / 3).I.Ib It1= (k' + k / 3).I.Ib / 2Id2 = 0 It2 = 0Id3 = (k' − k / 3).I.Ib It3 = (k' + k / 3).I.Ib / 2Special function - phase I <strong>and</strong> I'I'1 = k'.Ib'.I I1 = k.Ib.I = 0 = 0 = k.Ib.I = 0 = 0I'2 = 0 I2 = 0 = 0 = k.Ib.I = 0 = 0 = k.Ib.II'3 = k'.Ib'.I I3 = 0 = k.Ib.I = 0 = 0 = k.Ib.I = 0Yd11 Yd7 Yd3 Yd5 Yd1 Yd93/8 Testing

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