Filter
Top Products
Earthquake Protection Procedures
B-4 Issue 1 September 1995
Install Ground Plates on Cabinet
Backs
The ground plate provides the ground connection between cabinets, provides
radio frequency (RF) radiation protection, and also stabilizes the cabinets.
A ground plate is required between each cabinet (see Figure B-3). Complete the
following steps to attach the ground plate.
1. At the back of the cabinets, put in all the screws on the upper and lower
panels, except for the screws that run along the top and bottom of each
cabinet.
2. At the upper cabinet, place the top of the ground plate over the bottom of
the lower-back panel. Align the four holes in the ground plate with the four
holes at the bottom of the lower back cover of the cabinet and insert the
screws. Do not tighten the screws yet.
3. At the top of the cabinet below the cabinet referred to in Step 2, align the
bottom of the ground plate with the top four holes in the upper back cover
of the lower cabinet. Insert the four screws. Do not tighten the screws yet.
4. Repeat Steps 2 and 3 until the earthquake ground plates are installed
between all cabinets.
5. Tighten all screws.
Install Front Plates
For earthquake protection and electromagnetic shielding (as required by CISPR
22 regulations), use the front plate instead of the cabinet clip to attach the
cabinets to each other. Use one front plate between each cabinet. (Figure B-3).
Complete the following steps to install the front plates to the cabinet:
1. At the front of the cabinets, align the holes in the top of the earthquake
front plate with the holes at the bottom of the upper cabinet, and insert the
four screws. Do not tighten the screws yet.
2. At the front of the cabinets, align the holes in the bottom of the earthquake
front plate with the holes at the top of the lower cabinet, and insert the four
#12-24 by 1/2-inch (1.27 cm) thread-forming screws. Do not tighten the
screws yet.
3. Repeat Steps 1 and 2 until all the cabinets are fastened together with the
earthquake front plate.
4. Tighten all screws.