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- Page 11 -

I.B. 8926-1

CONDUIT

Install conduit in such a manner as to prevent water from
entering and accumulating in the conduit or the enclo-
sure.  Eliminate sags in conduit.  Have the conduit enter
the motor control center (MCC) in the areas designated
for conduit entry on the plan views.  See pages 30 and
31 of this booklet and outline drawings shipped with the
MCC.  Keeping conduit within the shaded areas shown
in the plan views will avoid cable interference with struc-
tural members and live bus. (See Part 12.)

WIRING

Install the line and load conductors sized in accordance
with the NEC.  Use copper wire only for control ter-
minations.  Use copper wire only for power termi-
nations unless they are marked “CUIAL.” 
Use con-
ductors with a temperature rating of 75

°

C or higher, but

regardless of the insulation temperature rating select the
wire size on the basis of 75

°

C wire ampacity.  Using a

higher temperature wire ampacity table often results in
a smaller cross-section of copper available for carrying
heat away from terminals.

Install insulated wire and cable at a temperature suffi-
ciently warm to prevent the insulation from cracking or
splitting.

When more than one conduit is run from a common
source or to a common load, be sure to have each con-
duit carry conductors from each phase and the same
number of conductors per phase.  If the phase conduc-
tors are not distributed uniformly, eddy currents will be
generated in the steel between the conduits.

Locate conductors within the MCC to avoid physical dam-
age and to avoid overheating.  Secure incoming power
lines in a manner adequate to withstand the forces which
will act to separate the conductors under short-circuit
conditions.  Use the cable ties furnished in both horizon-
tal and vertical wireways to support the load and inter-
connection wire.  Use a shielded communications cable
inside of flexible metal conduit to protect very low volt-
age signals transmitted to or from a computer or pro-
grammable controller.

Lugs furnished with the MCC and its components are
for Class B and Class C stranding.  Verify the compatibility
of wire size, type, and stranding with the lugs furnished.
Where they are not compatible, change the wire or lugs
accordingly.  If crimp lugs are used, crimp with the tools
recommended by the manufacturer.

Use care in stripping insulation to avoid nicking or ring-
ing the metal.

All field wiring to control units should be made in accord-
ance with the wiring drawings that are furnished with the
control center.  Load and control wiring can be brought
in through the upper and/or lower horizontal wireways.
Determine the type of wiring installed in the control center
(NEMA Type B or C) and proceed per the appropriate
paragraph below.

The phase sequence of the power circuit load termi-
nals (left-to-right: T1, T2, T3) in units mounted on
the rear side of the MCC is opposite to that of the
load terminals in units mounted on the front side of
a back-to-back MCC.  To obtain the same direction
of rotation for a motor connected to a rear-mounted
unit as for one connected to a front-mounted unit,
relabel the terminals in the rear-mounted unit: T3,
T2, Tl, and wire accordingly.  Refer to the warning
sticker supplied with rear-side units.

When making connections to the load terminals be sure
to leave sufficient slack in the wires so that the unit can
be withdrawn to the detent position for maintenance.  See
page 20.

NEMA TYPE B WIRING

Each control unit is factory assembled with devices
interwired within the unit.  In addition, all control wiring is
carried to unit terminal blocks mounted on the right-hand
side of the unit.  See Figure 15.  Bring the field wiring of
control wires from a horizontal wireway into the vertical
wireway on the right-hand side of the applicable control
unit and terminate them at the unit terminal blocks.  Bring
load wiring from the vertical wireway, under the bottom
right-hand side of the unit, to terminations within the unit.
See below.

ENGAGING PULL-APART TERMINAL BLOCKS

The male portion of the pull-apart terminal block is lo-
cated in a plastic bag tied to the pivot rod inside the unit.
This terminal block can be wired outside of the vertical
wireway.  To engage the terminal block, align the fingers
of the male connector with the slot at the back of the
female portion of the terminal block.  Then rotate the
male portion forward and to the left into the female por-
tion of the terminal block.

Each male portion of the pull-apart terminal block has
two cavities adjacent to the. center terminal screw to

PART 4

INSTALLING CONDUIT AND WIRING

Содержание Freedom 2100

Страница 1: ...allation and Maintenance Manual This electrical control equipment is designed to be in stalled operated and maintained by adequately trained workmen These instructions do not cover ll details vari ati...

Страница 2: ...p cable entry At the bottom of each section a door 18 provides ready access to the bottom horizontal wireway 19 and neu tral bus if provided The bottom of each section is com pletely open to provide u...

Страница 3: ...m of three padlocks is provided on each handle The device panel 6 is mounted on the drawout unit It will accommodate up to six pilot devices The overload reset button 20 is mounted on the unit door Fi...

Страница 4: ...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 fo...

Страница 5: ...out and or tagged out of service Where it is not feasi ble to de energize the system the following precau tions should be taken A Persons working near exposed parts that are or may be energized shoul...

Страница 6: ...leveling each section and bolting the frames together if they are separated If necessary secure the MCC to walls or other supporting surfaces Do not depend on wooden plugs driven into holes in masonry...

Страница 7: ...ith the MCC attached to one end of shipping section Refer to Figure 4 This method provides the most convenient access to the bolts and eliminates the need to remove the horizon tal bus barriers in tha...

Страница 8: ...the MCC the kit is shipped with four bolts per phase an appropri ate quantities of related hardware For a single bus bar per phase the hardware is used as shown in Figure 6 for either 16 or 20 deep e...

Страница 9: ...Where the MCC is supplied in a Type 3R enclosure for an outdoor application apply roof splice caps at each shipping block junction to maintain the enclosure integrity Fig 9 Quadruple Bar Splice Kits...

Страница 10: ...Control Center set up for splice to Freedom Unitrol of F10 Unitrol Fig 11 Splice Plates Attached to Freedom 2100 Horizontal bus and Ground Bus at Top Fig 12 Horizontal bus Splice Freedom unitrol On Le...

Страница 11: ...change the wire or lugs accordingly If crimp lugs are used crimp with the tools recommended by the manufacturer Use care in stripping insulation to avoid nicking or ring ing the metal All field wirin...

Страница 12: ...and from these unit blocks along with load wiring through Size 3 to master terminal blocks located at the top o bottom of the structure See Figure 16 Master terminal blocks can be either fixed or draw...

Страница 13: ...eneral rule allow the disconnect means and overcurrent protection to be located in the MCC pro vided the feeder taps from the transformer are sufficiently short and other requirements are met MAIN DIS...

Страница 14: ...line connections sufficiently and tighten the lugs correctly Each incoming line compartment is equipped with a two piece spreader bar located about nine inches from the conduit entry Use this spreade...

Страница 15: ...Bimetallic ambient compensated operated Trip free mechanism Electrically isolated NO NC contacts pull RESET button to test Overload trip indication Single phase protection UL listed CSA certified and...

Страница 16: ...ter clockwise one setting at a time until the breaker trips in starting and then adjust upward one setting position This will insure that the circuit will open instantly on any current above the moto...

Страница 17: ...the motor nameplate FLA full load amps B Tighten the heater pack mounting screws securely per r e c o m m e n d e d torque values listed below Heater Pack Numbers Recommended Torque H2001B thru H2017B...

Страница 18: ...5 45 6 H2020 45 7 51 2 56 7 62 1 H2021 62 2 69 7 77 1 84 6 H2022 84 7 94 9 105 115 H2023 106 118 131 144 H2024 A B C D MAXIMUM RATINGS NEMA SIZE AMPERES SIZE AMPERS 0 18 1 27 F 32 Use 75 C copper con...

Страница 19: ...47 H2008B A B C D FLA rating marked on heater pack multiplied by a transfomation ratio For motor FLA values not listed turn the dial clockwise for higher or counterclockwise for lower ratings Magnetic...

Страница 20: ...s prior to energizing 9 Manually exercise all switches circuit breakers and other operating mechanisms to make certain that they are properly aligned and operate freely 10 Test any ground fault protec...

Страница 21: ...allation unscrew prior to unit withdrawal Pull apart terminal blocks in the vertical wireway must be disengaged see Figure 27 and page 10 and wiring from the unit to other units to master terminal blo...

Страница 22: ...When the unit is withdrawn free of the linkage a spring automatically moves the shutter to its closed po sition See Figure 31 and Figure 4 With the control unit removed the shutter should com pletely...

Страница 23: ...lank door 2 Position the new unit door over the open space to ensure the hinges and latches are aligned If the spaces differ the hinges and latches on the struc ture must be re located to match the un...

Страница 24: ...trical equipment refer to the applicable drawings covering the specific motor control center MCC and any other related inter connection drawings Follow any instructions which may be given for each dev...

Страница 25: ...est ter minated with a crimp type lug that is attached to the con trol component When screw type lugs marked CU AL are used with aluminum wire joint should be checked for tightness every 200 operation...

Страница 26: ...Page 26 I B 8926 1...

Страница 27: ...as follows A Place a 020 inch feeler gauge between the arma ture and magnet with the armature held tightly against the magnet B Check continually in each phase i e determine if circuit from terminal t...

Страница 28: ...ig 39 Normal Service Wear Fig 40 End of Service Life ABNORMAL WEAR CONDITIONS Contact Appearance Cause Curling and Separation Curling is usually a result of service that produces very high heat of Cor...

Страница 29: ...pen the switch or if visual inspection after opening indicates deterioration beyond normal wear and tear such as overheating contact blade or jaw pitting insulation breakage or charring the switch mus...

Страница 30: ...to service Before returning the controller to service checks must be made for the tightness of elec trical connections and for the absence of short circuits grounds and leakage All equipment enclosur...

Страница 31: ...rsing F204 F206 F207 Full Voltage Reversing F214 F216 F217 Reduced Voltage Autotransformer Type F604 F606 F607 Reduced Voltage Part Winding Type F704 F706 F707 Reduced Voltage Closed Transition Star D...

Страница 32: ...Page 32 I B 8926 1 Part 11 PLAN VIEWS...

Страница 33: ...Page 33 I B 8926 1...

Страница 34: ...s Size 5 non reversing and reversing vacuum I L 16999 Size 6 non reversing and reversing vacuum I L 17088 Metering IQ Data Plus TD 17195 Circuit Breakers Series C F frame I L 29ClOl Series C J frame I...

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