Cell Section; Table 5- 7 Cell Section Components 4160 V, 40-140 Amp; Table 5- 8 Cell Section Components 4160 V, 200 - 260 Amp - Siemens 6SR41 series Product User Manual

Product Description
5.3 Cabinet Details
secondary short circuit protection and are sized to accommodate power cell charging
currents upon initial energizing.
Note
A mixture of the three fuse vendors are permitted in terms of fuse replacement as long as
any two fuses protecting the secondary windings are matched (i.e., FA1A and FA1C should
be from the same vendor).
Note
The GenIV core drive does not include primary fuses. When E-rated fuses are required,
choose the smallest rating greater than or equal to the transformer's primary nameplate
current value (e.g., 1000 KVA / (1.732 * 4160 V) = 139 A, use 150E fuses).
5.3.3

Cell Section

The Cell Section is located in the upper right hand portion of the GenIV drive enclosure. The
basic electrical diagrams for all Perfect Harmony systems are similar. One of the most critical
components of all Perfect Harmony drives is the power cell (see Table "Medium Voltage
Terminations"). Depending on the operating load voltage, in GenIV either 9, 15, or 24 cells
are used to develop the multi-level PWM output waveform. The following table lists the
components found in the Cell section.
Table 5- 7 Cell Section Components 4160 V, 40-140 Amp
Component Label
A1, A2, A3, B1, B2, B3, C1, C2, C3
BPKA1, BPKA2, BPKA3, BPKB1, BPKB2, BPKB3, BPKC1,
BPKC2, BPKC3
K2
Table 5- 8 Cell Section Components 4160 V, 200 - 260 Amp
Component Label
A1, A2, A3, B1, B2, B3, C1, C2, C3
BPKA1, BPKA2, BPKA3, BPKB1, BPKB2, BPKB3, BPKC1,
BPKC2, BPKC3
FA1A, FA1C, FA2A, FA2C, FA3A, FA3C, FB1A, FB1C,
FB2A, FB2C, FB3A, FB3C
K2
70
Part Description
GenIV Power Cells (40, 70, 100, or 140 Amp types)
Mechanical Cell Bypass Contactors (Optional)
Mechanical Key Interlock (Optional)
Part Description
GenIV Power Cells (200, or 260 Amp types)
Mechanical Cell Bypass Contactors (Optional)
Power Cell A and C Phase Input Fuses
Mechanical Key Interlock (Optional)
Operating Instructions, Version AE 12/2009, A5E01454341C
Product User Manual