Rockwell Automation 1608M MegaDySC Installation Instructions 400 A - Manual (Page 19)

Rockwell Automation Publication 1608M-IN001A-EN-P - September 2013 21
Chapter
4
Applying Power
• After installation make certain there are no metal filings or any conductive
debris in or on any components inside the cabinets.
• Verify MegaDySC system voltage rating matches ac source voltage.
• Ensure all input and output terminations including grounding have been
completed and properly tightened.
• Replace all covers. Close and lock all cabinet and switchboard doors.
• Allow commissioning technicians to complete connections and initial
checks.
• Apply power from the upstream branch protection device when instructed
to do so by the commissioning technicians.
• After commissioning, follow instructions on the Automatic Bypass
switchboard to put the system into Normal mode. The load is now being
protected by the MegaDySC. The display should show “OK” in the upper
left corner.
NOTES:
1.Cycling input power in the sequence OFF--ON--OFF--ON within a one minute period will cause
a "Limit Cycle Timeout" alarm. In such case sag correction will be disabled for one minute, after
which the alarm will automatically reset.
2. Pushbutton "Close CBI" is disabled for one minute after CBI is opened for any reason.
ATTENTION: The MegaDySC system must be commissioned by factory-trained
engineers. Do not energize the MegaDySC until instructed to do so by
commissioning engineers. If the Automatic Bypass switchboard must be
installed and energized before commissioning, follow instructions next to
Figure 5 .
WARNING: The MegaDySC and (optional) ER cabinets are interlocked. Opening
cabinet doors while in the MegaDySC "normal" mode will cause immediate
automatic bypass operation and subsequent loss of voltage sag protection
while in "maintenance bypass" mode. Automatic Bypass switchboard cabinet
doors are not interlocked and should be kept locked to avoid exposure to
dangerous voltages. (see Publication 1608M-UM001A-EN-P)
ATTENTION: For Information regarding the operation of MegaDySC, including
information on the display screen and maintenance, see Publication 1608M-
UM001A-EN-P.