Rockwell Automation 1512A MV Controllers, 400A One-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 43)

Rockwell Automation Publication 1512A-UM100F-EN-P - May 2013 35
Common Installation Chapter 4
• All fuses are correct class, type and rating;
• Mechanical interlocks and isolation switch function properly;
• Ensure that any microprocessor-based protection relay is programmed;
• Interior of cabinet is free from dirt, loose bolts, tools or metal chips.
Vacuum clean if necessary;
• All tools are accounted for. If you cannot locate a tool, do not energize the
unit until it is found.
Testing Contactor Operation
1. Connect the appropriate external power supply (120 or 230V AC) to the
test receptacle in the control panel. Turn the selector switch to the TEST
position.
2. Electrically operate the contactor several times. Inspect the armature plate
to verify that it fully contacts the magnetic cores.
3. Turn the selector switch to the OFF position and unplug the test voltage.
4. Remove any metal filings or loose hardware from around the magnetic
cores of the vacuum contactor. The debris is attracted to the coil once it is
energized and could prevent the contactor from closing properly.
ATTENTION: Some control circuit configurations may require control
jumpers to let the contactor close during the test procedure. Do not
jumper any isolation switch contacts such as ISa or ISb (see
Figure 61 on
page 60 for the location of these contacts). Using jumpers for these
contacts may result in equipment damage or injury to personnel.