Class 8839 58M Enclosed AC Drives
Power Circuit Descriptions
Barriered Bypass
Bypass configurations use isolation/bypass contactors to provide emergency full speed operation with Class 20 overloads. When Barriered Bypass (option 910) is selected, configurations with bypass are supplied with dual disconnects and compartmentalized construction for proper circuit isolation when performing maintenance.
| CB | CB | Pic04.eps |
| Disconnect | Disconnect | |
| Line |
|
|
| Reactor |
|
|
Fan | Option |
| Control |
AC Drive |
|
| |
lC |
| BC | Barriered |
|
|
| Bypass |
|
|
| Contactor |
|
|
| Compartment |
M |
|
| 65 KAIC |
| UL508C |
Line Reactor Options
CB
Disconnect
1.5% Line Reactor
Fans AC Drive
lC
M
Pic05.eps
Control
BC
25" Wide
Section Adder
Barriered
Bypass
100KAIC
UL508C
Line reactor options are wired ahead of the drive controller and do not affect bypass operation when supplied.
CB Disconnect
Line
Reactor
Option
Pic06 R1.eps
CB Disconnect
Line
Reactor
Option
Pic07 R1.eps
Fan AC Drive
Fan AC Drive
lC
BC
M
M
09/2003
149
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