Product Description
5.5 Synchronous Transfer Reactors
Product User Manual
100 Operating Instructions, Version AE 12/2009, A5E01454341C
5.5 Synchronous Transfer Reactors
When the GenIV requires the SYNCH TRANSFER feature, the output of the drive is
equipped with a reactor and switchgear (contactors). These reactors cannot be packaged
into the core configuration due to space limitations; therefore, they are housed in transition
cabinets. These reactors limit the rate of rise of current during transfers if the line voltage
and drive output voltage amplitude, frequency, and phase angle do not exactly match. Table
"Nine Cell Output transfer Inductance" lists the required inductance for GenIV synchronous
transfer reactors. These reactors are typically custom engineered, and may include an
overload rating that matches the cell type and two sets of thermal protectors embedded into
the windings. They are sized, based upon the continuous current rating of the power cells
and maximum voltage available of the drive.
Table 5- 27 Nine Cell Output Filter, Inductance
Cell Size ZFL @ 4160V L, Inductance L % @ 50H L % @ 60H
40 A 60.04 Ohms 14 mH 7.30 8.79
70 A 34.31 Ohms 7 mH 6.41 7.69
100 A 24.02 Ohms 4.8 mH 6.28 7.53
140 A 17.16 Ohms 3.5 mH 6.41 7.69
200 A 12.01 Ohms 2.38 mH 6.23 7.47
260 A 9.24 Ohms 1.83 mH 6.22 7.47
Table 5- 28 Fifteen Cell Output Filter, Inductance
Cell Size ZFL @ 6600 V L, Inductance L % @ 50H L % @ 60H
40 A 95.26 Ohms 14 mH 4.62 5.54
70 A 54.43 Ohms 7 mH 4.04 4.85
100 A 38.11 Ohms 4.8 mH 3.96 4.75
140 A 27.22 Ohms 3.5 mH 4.04 4.85
200 A 19.05 Ohms 2.38 mH 3.92 4.71
260 A 14.66 Ohms 2.38 mH 5.10 6.12
Table 5- 29 Twenty-Four Cell Output Filter, Inductance
Cell Size ZFL @ 10000 V L, Inductance L % @ 50H L % @ 60H
40 A 158.77 Ohms 37.9014 mH 7.50 9.00
70 A 90.73 Ohms 22.00 mH 7.62 9.14
100 A 63.51 Ohms 15.90 mH 7.87 9.44
140 A 45.36 Ohms 11.00 mH 7.62 9.14
200 A 31.75 Ohms 7.00 mH 6.93 8.31
260 A 24.43 Ohms 5.80 mH 7.46 8.95
Note
Actual project L and C values are subject to change.
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