Rockwell Automation 1608M MegaDySC User Manual, 400 A - Manual (Page 23)

Rockwell Automation Publication 1608M-UM001A-EN-P - September 2013 23
Operation Chapter 5
Automatic Bypass
Switchboard Operating
Instructions Automatic System
In the event of a fault in the MegaDySC system, bypass (CBB) will close. The
system will remain in bypass until manually transferred back to the MegaDySC
Manual Transfer to Maintenance Bypass (Bypass Mode)
1. If CBB is tripped, Press both "CBB RESET" pushbuttons.
2. Press green "CLOSE CBB" pushbutton.
3. Confirm that red "BYPASS CLOSED" lamp is lit.
4. Press red "OPEN/RESET CBI" pushbutton. Output breaker (CBO) will
open automatically.
5. Confirm that both CBI and CBO are open.
6. The MegaDySC is now bypassed and isolated for maintenance.
Manual Transfer to MegaDySC (Normal Mode)
1. Press red "OPEN/RESET CBI" pushbutton then press green
"CLOSE CBI" pushbutton.
Note: "CLOSE CBI" is inhibited for one minute
after power cycling.
2. Confirm that the MegaDySC screen is lit, is green and displays "OK" in
the upper-left corner.
3. Close CBO by manually moving the handle to the "OFF" (0) position and
then to the “ON” (|) position.
4. Confirm that the screen on the MegaDySC displays "OK".
5. Press red “OPEN CBB” pushbutton
6. The MegaDySC system is now providing power to the load.
ATTENTION: - Follow these instructions to avoid interrupting load power!
Contact the factory immediately if the system fails to operate as outlined below.
Voltage sag protection is not available whenever CBB is closed (red lamp
lighted)