Eaton Freedom 2100, Руководство по установке и обслуживанию

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I.B. 8926-1
RATINGS
Each Freedom 2100 Motor Control Center has a rating
nameplate attached to the door of the top horizontal
wireway of the primary section. See Figures 1 and 2.
This nameplate shows the general order number under
which the motor control center was built and its continu-
ous electrical ratings, in terms of incoming line voltage,
phases, and frequency, and ampere ratings of the hori-
zontal bus and the vertical bus for each section. In addi-
tion, this nameplate shows the passive short-circuit (with-
stand) rating of the horizontal and vertical bus system.
The active short-circuit (interrupting) ratings of the main
and unit short-circuit protective devices are shown on
labels attached to the inside of each unit. Before install-
ing a motor control center, calculate and record the fault
current available at the incoming line terminals. Verify
that the short-circuit withstand and short-circuit interrupt-
ing ratings of the units in the motor control center are
appropriate for the fault current available.
QUALIFIED PERSONNEL
Individuals who install, operate or maintain motor con-
trol centers must be trained and authorized to operate
the equipment associated with the installation and main-
tenance of a motor control center, as well as the opera-
tion of the equipment that receives its power f rom con-
troller units in the motor control center.
Such individuals must be trained in the proper proce-
dures with respect to disconnecting and locking OFF
power to the motor control center, wearing protective
clothing and equipment, and following established safety
procedures as outlined in the
National Electrical Safety
Code (ANSI C2) and Electrical Equipment Maintenance
(NFPA 70B).
RECEIVING
Before and after unloading the motor control center, in-
spect each section and unit exterior for evidence of dam-
age that may have been incurred during shipment. If
there is any indication that the control center has been
mishandled or shipped on its back or side, remove the
drawout units and make a complete inspection of the
internal structure, bus bars, insulators and unit compo-
nents for possible hidden damage. Report any damage
found to the carrier at once.
HANDLING
The following guidelines are provided to help avoid per-
sonal injury and equipment damage during handling, and
to facilitate moving the motor control center at the job
site.
GENERAL HINTS
1. Handle the motor control center with care, to avoid
damage to components and to the enclosure or its
paint finish.
2. Keep the motor control center in an upright position.
3. Insure that the moving means has the capacity to
handle the weight of the motor control center.
4. The control center should remain secured to the ship-
ping skid until the motor control center is in its final
Part 2
RECEIVING, HANDLING AND STORAGE
location.
5. Exercise care during any movement and placement
operations to prevent falling or unintentional rolling
or tipping.
6. Lifting angles for handling by overhead crane are
bolted to the top of each shipping section. Handling
by overhead crane is preferable but when crane fa-
cilities are not available, the motor control center can
be positioned with a fork-lift truck or by using rollers
under the shipping skid.
OVERHEAD CRANE
1. See Figure 3 for recommended lifting configuration.
2. Select or adjust the rigging lengths to compensate
for any unequal weight distribution, and to maintain
the motor control center in an upright position.
3. To reduce tension on the rigging and the compres-
sive load on the lifting angles, do not allow the angle
between the lifting cables and vertical to exceed 45
degrees.
4. Use slings with safety hooks or shackles. Do not
pass ropes or cables through lifting angle holes.
5. After removing the lifting angles, replace the mount-
ing hardware to prevent the entrance of dirt, etc.
FORK-LIFT TRUCK
Motor control centers are normally top and front heavy.
Balance the load carefully and steady, as necessary,
while moving. Always use a safety strap when han-
dling with a fork-lift.