36 MNS-SG Operation and Maintenance | Manual
4.9.2.
Direct connections to main sections
For main sections, entry spaces for connections are
provided at the top or bottom of the sections. The top
plates (and bottom plates, if present) are removable to
facilitate
installing
conduit
or
making
other
modifications.
The top and bottom horizontal wireway are dedicated to
control wires. The horizontal wireway enables running
control wiring between sections.
4.9.3.
Connect between horizontal and vertical wireways
There are openings available between the vertical
locations (A, B, C, D) for control wiring. Openings are 8.6
in (219 mm) X 0.9 in (22 mm).
4.9.4.
Connect control wiring between sections
The device compartment segregation walls have knock-
outs that can be used to create openings to connect the
horizontal wireway between sections.
Run
interconnecting
wiring between sections in a
shipping split through the horizontal wireway in the top
and bottom of each section.
To make connections between shipping splits, a pull-
apart terminal block usually will be provided.
-
Locate and uncoil removable shipping split terminals,
refer to SG connection drawings provided in the
Quality Dossier.
-
Once the wiring is uncoiled, locate the terminals
according to the number marked on them.
-
Connect the removable terminal block to the fixed
terminal block according to the marked numbering.
Knock-out locations
-
To make the communication connection, refer to
connection drawings in the communication section and
locate the plug in connectors in the shipping section.
-
Connect the male and female communication connectors
following their guide
4.9.5.
Connection to external control source (if required)
If an external control source is used, it should be stable and not
subject to variations. Consult your ABB representative for
minimum VA requirements. Terminals for external control
sources will usually be provided in the top or bottom wireway
of the first or last section of the lineup. See the switchgear
drawings for more details.
4.10.
Other installation information
4.10.1.
Interruption of installation
If work is interrupted during installation or connection, take
appropriate measures to ensure that dust, moisture and
foreign objects are not allowed to enter the switchgear
enclosures.
Close the section doors whenever installation work stops or is
delayed. For interruptions lasting more than one day, you
should cover the sections.
In damp or humid environments, use heaters to prevent
condensation. See Temporary Storage in this manual for more
information.
4.10.2.
Surface damage
To extend the life and ensure the safe operation of your
switchgear, keep the exterior clean and in good condition.
To remove grease or oil on the exterior, use a cleaning solvent
and a cloth or disposable wipe.
See Exterior Metal Damage Repair in this manual for repair
instructions.
4.11.
Commission the switchgear
4.11.1.
Physical equipment check
Check all of the following items related to the installation and
site before energizing the switchgear:
-
Are the shipping splits connected properly and the lineup
firmly attached to the foundation or false floor?
-
Are shipping split bus splices at all bars tightened to the
proper torque? Refer to the Torque Table in this manual.
-
Are all factory-installed splice connections still at the proper
torque as indicated by the alignment?
Wireway
Opening
Detail Bottom Wireway
Detail Top Wireway