4.0 1.800 4.5 2.200 Limits; ± 2 %Ir According to the Technical Reference Catalogue Page24 – Test of 2nd Harmonics (All Values as an example) Idmin = 0.3 Ib I1 ( F =60 Hz ) I2 ( F = 120 Hz ) I2 / I1 ratio % (Pickup Expected Blocking Measured R 10 1.0 0.100 Y 50 1.0 0.500 B 100 1.0 1.00 Test of 5th Harmonics I5 ( F = 300 Hz ) Phase I5 / I1 ratio % I1 ( F =60 Hz ) Expected Blocking Measured R 15 1.0 0.150 Y 30 1.0 0.300 B 50 1.0 0.500 CROSS BLOCK TEST Cross Cross Winding IR IY IB Block on Block Off I > pickup I > pickup with without 2nd 2nd harmonic harmonic I > pickup I > pickup with HV without 2nd 2nd harmonic harmonic I > pickup I > pickup with without 2nd 2nd harmonic harmonic
4.0 1.800 4.5 2.200 Limits; ± 2 %Ir According to the Technical Reference Catalogue – Page24 Test of 2nd Harmonics (All Values as an example) Idmin = 0.3 Ib I2 / I1 ratio % I1 ( F =60 Hz ) (Pickup I2 ( F = 120 Hz ) Expected Blocking Measured R 10 1.0 0.100 Y 50 1.0 0.500 B 100 1.0 1.00 Test of 5th Harmonics Phase I5 / I1 ratio % I1 ( F =60 Hz ) I5 ( F = 300 Hz ) Expected Blocking Measured R 15 1.0 0.150 Y 30 1.0 0.300 B 50 1.0 0.500 CROSS BLOCK TEST Winding IR IY IB Cross Block on Cross Block Off HV I > pickup with 2nd harmonic I > pickup without 2nd harmonic I > pickup with 2nd harmonic I > pickup without 2nd harmonic I > pickup without 2nd harmonic I > pickup with 2nd harmonic