Product Description
5.3 Cabinet Details
Product User Manual
70 Operating Instructions, Version AE 12/2009, A5E01454341C
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 Part Description
A1, A2, A3, B1, B2, B3, C1, C2, C3 GenIV Power Cells (40, 70, 100, or 140 Amp types)
BPKA1, BPKA2, BPKA3, BPKB1, BPKB2, BPKB3, BPKC1,
BPKC2, BPKC3
Mechanical Cell Bypass Contactors (Optional)
K2 Mechanical Key Interlock (Optional)
Table 5- 8 Cell Section Components 4160 V, 200 - 260 Amp
Component Label Part Description
A1, A2, A3, B1, B2, B3, C1, C2, C3 GenIV Power Cells (200, or 260 Amp types)
BPKA1, BPKA2, BPKA3, BPKB1, BPKB2, BPKB3, BPKC1,
BPKC2, BPKC3
Mechanical Cell Bypass Contactors (Optional)
FA1A, FA1C, FA2A, FA2C, FA3A, FA3C, FB1A, FB1C,
FB2A, FB2C, FB3A, FB3C
Power Cell A and C Phase Input Fuses
K2 Mechanical Key Interlock (Optional)
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