Rockwell Automation 1395 Digital DC Drive User Manual
Page 47
Publication 2361-5.01 July 1998
Chapter
4
Your 3000A DC Drive
Contents
This chapter is designed to help you understand the construction of
your 3000A Bulletin 1395 DC drive. The following topics will be
covered in this chapter:
Introduction
Your 3000A DC drive functions with the following features:
•
The 3000A drive uses twelve SCRs in the armature bridge to
convert the 3-phase AC input to a DC output, six for the positive
DC output and six for the negative. The SCRs are built into a
heatpipe assembly and are cooled by the bridge fan.
•
The 3000A drive is protected from incoming fault currents with a
circuit breaker, and the DC output is protected from fault currents
with a DC contactor. The components of your drive (the
armature bridge, field bridge, and control components) are
protected with fuses, MOVs, snubbers, and/or chokes.
•
The 3000A drive is constructed and housed in four bays, the first
bay containing the AC input and control hardware, the second
bay containing the fuses, the third bay containing the armature
bridge hardware, and the fourth bay containing the DC output
hardware.
•
The 3000A drive has a standard top-hat extension over the
disconnect bay for the AC input.
Topic
Page
Introduction
Drive Layout
4-2
Drive Schematics
4-3
Symbol Reference Chart
4-6
Drive Structure
4-8
Conclusion
4-8
Input Voltage (V AC)
Nominal Output HP
460
1250-1750
575
1500-2250
660
1500-2500