GE Multilin D400, Instruction Manual

Page: 176 / 192

176 GE INFORMATION D400 SUBSTATION GATEWAY INSTRUCTION MANUAL
APPENDIX B INSTALLING AND CONNECTING DNP3 I/O MODULES
Installing DNP3 I/O modules in a rack
Rack spacing
When mounting multiple DNP3 I/O modules in a rack, or when mounting DNP3 I/O
modules in a rack with other equipment, verify that there is at least one rack unit (RU) of
space above and below the DNP03 I/O module to allow for cooling air flow and cable
routing (1 RU = 1.75 inches or 44.5 mm).
Required clearances
The exterior dimensions of the DNP3 I/O module are:
Allow about 14 inches (356 mm) of total cabinet depth, to provide clearance for cables and
maintenance access.
Rack mounting procedure
To mount the DNP3 I/O module in a rack:
1.
Determine the location of the DNP3 I/O module in a 19-inch mounting rack.
2. Install, but do not tighten the top two mounting screws.
NOTE
Install the DNP3 I/O module with the LEDs visible from the front of the rack.
3. Slide the DNP3 I/O module over the top mounting screws and drop down into position.
4. Insert the bottom mounting screws.
5. Tighten all four mounting screws.
You are now ready to connect ground to the DNP I/O module. See “Connecting to
protective ground” on page 176.
Connecting to protective ground
Connect your DNP3 I/O module to site ground, using a separate 2.05 mm (12 AWG) Yellow/
Green wire.
Each type of DNP I/O Module has a different ground point, as shown in the examples of
Table 57.
The location of the protective ground terminal varies between WESTERM I/O module types.
Refer to Module Layout drawing of your module for detailed information. For example, see
Table 57.
Dimension Measurement
Width 19 inches (
483 mm)
Height 5.25 inches (
133.4 mm)
Depth 2.5
inches (63.5 mm)