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MOTOR CONTROL CENTERS – low voltage

motor control centers – low voltage (freedom) section 16482a section 16482a motor control centers – low voltage (freedom)
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MOTOR CONTROL CENTERS – low voltage (freedom)
Section 16482A
section 16482A
MOTOR CONTROL CENTERS – low voltage (freedom)
1.
General
1.
Scope
A.
The Contractor shall furnish and install the motor control
centers as specified herein and as shown on the contract
drawings.
2.
Related Sections
A.
Section 16475 – Circuit Breakers and Fusible Switches
B.
Section 16481 – Motor Starters and Overload Relays – Low
Voltage
C.
Section 16483A, B, C, & D – Adjustable Frequency Drives
D.
Section 16671A – Transient Voltage Surge Suppression
E.
Section 16901 – MicroprocessorBased Metering Equipment
F.
Section 16902 – Electric Control Devices
G.
Section 16903 – Protective Relays
H.
Section 16906 – Logic Controllers
I.
Section 16911 – Power Management Systems and Products
3.
References
A.
The Motor Control Centers and all components shall be
designed, manufactured and tested in accordance with the
latest applicable standards of NEMA, ANSI and UL 845.
4.
Submittals – for review/Approval
A.
The following information shall be submitted to the
Engineer:
1.
Master drawing index
2.
Front view elevation
3.
Floor plan
4.
Top view
5.
Unit wiring diagrams
6.
Nameplate schedule
7.
Starter and component schedule
8.
Conduit entry/exit locations
9.
Assembly ratings including:
a.
Shortcircuit rating
b.
Voltage
c.
Continuous current
10.
Major component ratings including:
a.
Voltage
b.
Continuous current
c.
Interrupting ratings
11.
Cable terminal sizes
12.
Product data sheets
A.
Where applicable the following information shall be submitted
to the Engineer:
1.
Busway connection
2.
Connection details between closecoupled assemblies
3.
Key interlock scheme drawing and sequence of operations
1.
Submittals – for construction
A.
The following information shall be submitted for record
purposes:
1.
Final asbuilt drawings and information for items listed
in Paragraph 1.04, and shall incorporate all changes
made during the manufacturing process
2.
Unit wiring diagrams
3.
Certified production test reports
4.
Installation information
5.
Seismic certification and equipment anchorage details as
specified
2.
Qualifications
A.
The manufacturer of the assembly shall be the manufacturer
of the major components within the assembly.
B.
For the equipment specified herein, the manufacturer shall
be ISO 9001 or 9002 certified.
C.
The manufacturer of this equipment shall have produced
similar electrical equipment for a minimum period of five
(5) years. When requested by the Engineer, an acceptable
list of installations with similar equipment shall be
provided demonstrating compliance with this requirement.
D.
Provide Seismic tested equipment as follows:
1.
The equipment and major components shall be suitable for and
certified by actual seismic testing to meet all applicable
seismic requirements of the [latest International Building
Code (IBC)] [latest California Building Code (CBC) with
OSHPD Amendments]. [The equipment shall have OSHPD Special
Seismic Certification (OSP) PreApproval.]
2.
The Project Structural Engineer will provide site specific
ground motion criteria for use by the manufacturer to
establish SDS values required.
3.
The IP rating of the equipment shall be 1.5
4.
The Structural Engineer for the Site will evaluate the SDS
values published on the [Manufacturer’s] [OSHPD] website to
ascertain that they are "equal to" or "greater than" those
required for the Project Site.
5.
The following minimum mounting and installation guidelines
shall be met, unless specifically modified by the above
referenced standards.
6.
The Contractor shall provide equipment anchorage details,
coordinated with the equipment mounting provision, prepared
and stamped by a licensed civil engineer in the state.
Mounting recommendations shall be provided by the
manufacturer based upon the above criteria to verify the
seismic design of the equipment.
a.
The equipment manufacturer shall certify that the
equipment can withstand, that is, function following the
seismic event, including both vertical and lateral
required response spectra as specified in above codes.
b.
The equipment manufacturer shall document the requirements
necessary for proper seismic mounting of the equipment.
Seismic qualification shall be considered achieved when
the capability of the equipment, meets or exceeds the
specified response spectra.
1.
Regulatory Requirements
A.
The motor control centers shall bear a UL label. [Certified
copies of production test reports shall be supplied
demonstrating compliance with these standards when requested
by the Engineer.]
2.
Delivery, Storage and Handling
A.
Equipment shall be handled and stored in accordance with
manufacturer’s instructions. One (1) copy of these
instructions shall be included with the equipment at time of
shipment.
3.
Operation and Maintenance Manuals
A.
Equipment operation and maintenance manuals shall be
provided with each assembly shipped and shall include
instruction leaflets, instruction bulletins and renewal
parts lists where applicable, for the complete assembly and
each major component.
1.
products
1.
manufacturers
A.
Eaton
B.

C.

The listing of specific manufacturers above does not imply acceptance
of their products that do not meet the specified ratings, features and
functions. Manufacturers listed above are not relieved from meeting
these specifications in their entirety. Products in compliance with
the specification and manufactured by others not named will be
considered only if preapproved by the engineer ten (10) days prior to
bid date.
2.
ratings
A.
The Motor Control Center(s) shall be 600volt class suitable
for operation on a threephase, 60 Hz system. The system
operating voltage and number of wires shall be as indicated
on the drawings.
3.
construction
A.
Motor Control Center(s) shall be equal to Eaton type F2100
design.
B.
Structures shall be totally enclosed, deadfront,
freestanding assemblies. They shall be 90 inches high and [16
inches] [21 inches] deep for frontmounted units and 21
inches deep for backtoback mounted units. Structures shall
contain a horizontal wireway at the top [9] [15] inches
tall, isolated from the horizontal bus via metal barriers
and shall be readily accessible through a hinged cover.
Structures shall also contain a horizontal wireway at the
bottom [9] [3] inches tall that is open to the full rear of
the structure. Adequate space for conduit and wiring to
enter the top or bottom shall be provided without structural
interference.
C.
Compartments for mounting control units shall be
incrementally arranged such that not more than [[six (6)]
[twelve (12)] Size 1 or Size 2 starters for frontmounted
only] [[eleven (11)] [twentythree (23)] Size 1 or Size 2
starters for backtoback] can be mounted within each
vertical structure. Guide rails shall be provided.
D.
A vertical wireway with minimum of 35 square inches of
crosssectional area shall be adjacent to each vertical unit
and shall be covered by a hinged door. Wireways shall
contain steel rod cable supports.
E.
All full voltage starter units through NEMA Size 5 and all
feeder breakers through 400 Amp shall be of the drawout
type. Drawout provisions shall include a positive guide
rail system and stab shrouds to absolutely ensure alignment
of stabs with the vertical bus. Drawout units shall have a
tinplated stab assembly for connection to the vertical bus.
No wiring to these stabs shall extend outside of the
drawout unit. Interior of all units shall be painted white
for increased visibility. Units shall be equipped with
sidemounted, positive latch pullapart type control
terminal blocks rated 600 volts. Knockouts shall be provided
for the addition of future terminal blocks. In addition, a
master terminal block, when Type C wiring is specified,
shall be drawout and shall be located in the [top]
[bottom] wireway, readily accessible through a hinged cover.
All control wire to be [14 gauge] [16 gauge] minimum.
F.
All drawout units shall be secured by a springloaded,
quarter turn, indicating type fastening device located at
the top front of the unit. With the exception of the
dualmounted units, each unit compartment shall be provided
with an individual front door.
G.
An operating mechanism shall be mounted on the primary
disconnect of each starter unit. It shall be mechanically
interlocked with the unit door to prevent access, unless the
disconnect is in the “OFF” position. A defeater shall be
provided to bypass this interlock. With the door open, an
interlock shall be provided to prevent inadvertent closing
of the disconnect. A second interlock shall be provided to
prevent removal or reinsertion of the unit while in the “ON”
position. Padlocking facilities shall be provided to
positively lock the disconnect in the “OFF” position with up
to three (3) padlocks with the door open or closed. In
addition, means shall be provided to padlock the unit in a
partially withdrawn position with the stabs free of the
vertical bus.
4.
bus
A.
Each structure shall contain a main horizontal [tinplated
copper] [silverplated copper] bus, with minimum ampacity of
[600 amperes] [800 amperes] [1200 amperes] [1600 amperes]
[2000 amperes] [2500 amperes] [3200 amperes] or as shown on
the drawings. The horizontal bus shall be rated at [65]
[50] degrees C temperature rise over a 40 degrees C ambient
in compliance with UL standards. Vertical bus feeding unit
compartments shall be tinplated copper and shall be
securely bolted to the horizontal main bus. All joints shall
be frontaccessible for ease of maintenance. The vertical
bus shall have a minimum rating of [600 amperes for
backtoback mounted units] [600 amperes] [800 amperes]
[1200 amperes] or as shown on the drawings. Both vertical
and horizontal bus shall be fully rated; but shall not be
tapered. Tapering of vertical bus via a center feed is not
acceptable. Both top and bottom of this type bus must be
individually fully rated.
B.
The vertical bus shall be completely isolated and insulated
by means of a labyrinth design barrier. It shall effectively
isolate the vertical buses to prevent any faultgenerated
gases to pass from one phase to another. The vertical bus
shall include a shutter mechanism that will allow the unit
stabs to engage the vertical bus every 6 inches and provide
complete isolation of the vertical bus when a unit is
removed.
OR
B.
Isolation of the vertical bus compartment from the unit
compartment shall be by means of a full height insulating
barrier. This barrier shall be a single sheet of
glassreinforced polyester with cutouts to allow the unit
stabs to engage the vertical bus every 6 inches. Provide
snapin covers for all unused openings.
A.
Buses shall be braced for [65,000] [100,000] amperes RMS
symmetrical.
B.
A [tinplated] [silverplated] copper ground bus shall be
furnished firmly secured to each vertical section structure
and shall extend the entire length of the motor control
center. The ground bus shall be located in the [top] [bottom]
horizontal wireway.
C.
Each structure shall contain tinplated vertical ground bus
rated 300 amperes. The vertical ground bus shall be directly
connected to the horizontal ground bus via a tinplated copper
connector. Units shall connect to the vertical bus via a
tinplated copper stab.
1.
wiring/terminations
A.
Wiring shall be NEMA Class [I] [II], Type [A] [B] [C].
2.
motor controllers
Note to spec. Writer:
two classes of combination motor starters are outlined below.
Select the first paragraph 2.06 a. For circuit breaker type
combination starters.
Select the second paragraph 2.06 a. For fusible type starters
combination starters.
A.
Combination starter units shall be fullvoltage nonreversing,
unless otherwise shown, and shall utilize Eaton type HMCP
Motor Circuit Protectors.
1.
Each combination unit shall be rated [65,000] [100,000]
AIC symmetrical at 480 Volt. The HMCP shall provide
adjustable magnetic protection and be adjustable to 1700%
motor nameplate full load current to comply with NEC
requirements. All HMCP combination starter units shall
have a “tripped” position on the unit disconnect and a
pushtotest button on the HMCP. Type HMCP motor circuit
protectors through size 4 shall include transient override
feature for motor inrush current. [HMCP shall be used to
provide IEC 9474 Type 2 coordination to 100,000 amperes]
OR
B.
Combination starter units shall be fullvoltage nonreversing,
unless shown otherwise utilizing fusible switches.
1.
Fusible switches shall be quickmake, quickbreak and
shall accept Class R dimension fuses and the combination
shall safely interrupt 100,000 amperes. Fusible
combination starters shall provide IEC 9474 Type 2
coordination to 100,000 amperes
C.
Motor Starters
1.
Magnetic starters through NEMA Size 9 shall be equipped
with doublebreak silver alloy contacts. The starter must
have straightthrough wiring. Each starter shall have a
minimum of one (1) normally open auxiliary contact
2.
Coils shall be of molded construction through NEMA Size 9.
All coils to be colorcoded through size 5 and permanently
marked with voltage, frequency and part number
3.
Overload relays shall be an ambient compensated
bimetallictype with interchangeable heaters, calibrated
for 1.0 and 1.15 service factor motors. Electrically
isolated normally open and normally closed contacts shall
be provided on the relay. Visual trip indication shall be
standard. A test trip feature shall be provided for ease
of troubleshooting and shall be conveniently operable
without removing components or the motor starter. Overload
to have (+/) 24% adjustability, singlephase sensitivity,
isolated alarm contact, and manual or automatic reset
OR –
3.
SolidState Overload Relay C440
a.
Provide a solidstate overload relay for protection of the
motors. The relay shall be Eaton C440 or approved equal.
b.
The overload relay shall provide high accuracy through the
use of stateoftheart microelectronic packaging
technology. The relay shall be suitable for application
with NEMA Size 1 through Size 7 motor starters.
c.
The overload relay shall be modular in design, be an
integral part of a family of relays to provide a choice of
levels of protection, be designed to directly replace
existing electromechanical overload relays, and be listed
under UL Standard 508.
d.
The overload relay shall have the following features:
1.
Selfpowered
2.
Class 10A, 10, 20, or 30 selectable tripping
characteristics
3.
Manual or automatic reset
4.
Supply with [24 VDC] [24 VAC] [120 Vac] Electronic
reset
5.
Reset capabilities through onboard fieldbus
6.
Selectable (On/Off) Phase loss protection. The relay
shall trip in 10 seconds or less under phase loss
condition
7.
Selectable (On/Off) Phase Imbalance protection. The
relay shall trip in 10 seconds or less under phase
imbalance condition.
8.
Visible trip indication
9.
One normally open and one normally closed isolated
auxiliary contact
10.
Test button that operates the normally closed contact
11.
Test trip function that trips both the normally and
normally closed contacts
12.
A current adjustment range of 5:1 or greater
13.
Embedded, selectable (On/Off)Ground fault protection
shall be [supplied] [an available option]. Relay shall
trip when ground fault is detected at 50% of full load
ampere setting
14.
An LED that provides selfdiagnostic information
15.
An LED that aids in commissioning by indicating
running current is too high compared to the FLA dial
16.
[Modbus 485 RTU][Modbus 485 RTU with I/O] [DeviceNet
with I/O] [Modbus TCP with I/O and webserver],
[EtherNet/IP with I/O with webserver] or [Profibus DP]
Communication shall be [supplied] [an available
option].
17.
Additional digital Inputs and Outputs (4 in and 2 out
additional) shall be [supplied] [an available option].
Inputs shall be 120 Vac, or 24 VDC, and outputs shall
be discrete relay outputs
18.
Diagnostic Trip Information indicating a specific trip
on either ground fault, phase loss, phase imbalance,
or thermal
19.
When using any of the available fieldbus the relay
shall be capable of providing the following data
monitoring:
a.
Individual Phase Currents
b.
Average RMS Current
c.
Thermal Capacity
d.
% Phase unbalance
e.
GF Current
f.
Line Frequency
g.
Relay settings
h.
Contactor Status
OR –
4.
SolidState Overload Relay C441
a.
Where indicated on the drawings, use a
microprocessorbased Overload Relay (OLR) in each
starter and/or where indicated on the drawings for
protection, control, diagnostics and monitoring of the
motors. The OLR shall be Eaton type C441 (Motor Insight)
overload and monitoring relay. The OLR shall meet UL
1053, UL 508, CUL and CSA, and IEC standards
b.
The OLR shall not require external current transformers
for motor applications from 1 to 90 amperes FLA. Where
larger motors are involved, external current
transformers shall be used
c.
The OLR shall be rated for application of 660VAC and
less.
d.
The OLR shall have the following motor control
functions:
1.
1—Fault relay, Form B, NC contact with a rating code
of B300 per UL 508.
2.
1—Programmable Auxiliary Relay, Form A, NO contact
with a rating code of B300 per UL 508.
3.
Programmable auxiliary relay allows for user defined
fault identification, fault alarming and fault
prioritization, including all protection faults
including but not limited to: ground fault, jam,
phase imbalance, high and low power,
4.
1—External remote reset allowing for a 120VAC wired
remote reset
5.
2—Trip & Reset status indicating LEDs
6.
1 – Door mounted remote display manual reset button
7.
1 – Door mounted remote display Manual trip button
e.
The OLR shall be capable of accommodating external
current transformers with ranges from 150:5, 300:5, and
600:5 amperes through a settable CT multiplier on the
device for FLAs above 90 amps.
f.
The OLR shall draw its control power from separate
source 120 VAC supply not requiring line power to
operate it. The OLR shall be suitable for between 47 Hz
and 63 Hz.
g.
The OLR shall have selectable trip classes from 530;
stepped by ones.
h.
The OLR shall be equipped with a dedicated door mounted
operatorinterface (OI)/ display interface panel. The OI
shall have a sevensegment 3digit LED display for
control, programming, monitoring, diagnostic and
alarming functions.
i.
The overload relay shall be completely configurable
without the use of any proprietary software tool
j.
The overload relay shall be completely configurable
through the use of available communications/industrial
network
k.
The OLR relay shall have a minimum of a 10fault history
stored in a nonvolatile memory accessible locally on
the device without the use of communications
l.
The OLR relay shall have a minimum of a 10fault history
stored in a nonvolatile memory accessible remotely
through the use of communications/industrial network
m.
The OLR shall annunciate the following conditions and
allow for configuration within the ranges listed:
1.
Motor Protection consisting of:
a.
Thermal overload (FLAs 190 without external CTs, up
to 540 amps with external CTs)
b.
Jam, Stall and Current Level Alarming (Settable from
50400% of FLA, or OFF)
c.
Current unbalance (Settable from 130%, or OFF)
d.
Current phase loss (60% fixed, or OFF)
e.
Ground fault (Settable as low as 3 amps to 0.15 amps
dependent on the number of wire passes through the
current transformers, or OFF)
f.
Phase rotation/reversal (Settable as OFF, ACB, ABC)
1.
Load protection consisting of:
a.
Undercurrent (settable from 130%)
b.
Low power (kW) (configurable based on range of device)
c.
High power (kW) (configurable based on range of
device)
1.
Line Protection consisting of:
a.
Overvoltage (settable to 10% above OLR rated voltage)
b.
Undervoltage (settable to 15% below OLR rated
voltage)
c.
Voltage phase unbalance (settable from 130%)
d.
All Line Protection and Ground Fault shall be settable
to alarm only mode or trip mode
1.
Protection Trip Delays
a.
All Motor Protection shall have programmable trip
delays by specific trip type from 120 seconds
b.
All Load Protection shall have programmable trip
delays by specific trip type from 160 seconds
c.
All Line Protection shall have programmable trip
delays by specific trip type from 120 seconds
n.
The OLR shall have the following local advanced monitoring
capabilities not requiring communications:
1.
Current—Average and per phase RMS
2.
Voltage—Average and per phase RMS
3.
Power—Motor kW
4.
Power Factor
5.
Frequency
6.
Thermal capacity
7.
Motor run hours
8.
Ground fault current
9.
Current unbalance %
10.
Voltage unbalance %
o.
The OLR shall have the following additional monitoring
capabilities when using one of its industrial
networks/communication modules
1.
Time to restart after a line type fault
2.
Time to restart after a motor type fault
3.
Time to restart after a load type fault
4.
Motor Start Count
5.
Overload Relay Status
6.
Error Status
7.
Trip Reason
p.
The OLR shall have the ability to perform auto resets
based on programmable timers
1.
The OLR shall have a programmable auto reset for all
Motor Type Faults, settable from 2500 minutes
2.
The OLR shall have a programmable auto reset for
Thermal Overload only, settable from 2500 minutes
3.
The OLR shall have a programmable auto reset for Load
Type Faults, settable from 2500 minutes
4.
The OLR shall have the ability to auto reset for Line
Type Faults.
5.
The OLR shall have the ability to limit the number of
auto reset attempts to a number set by the user for
Motor Type Faults, and a separate number set for Load
Type Faults, after which a manual reset is required.
6.
The OLR shall have a programmable restart delay from
1500 seconds after a power loss has occurred to
ensure a deliberate start of multiple loads in a
stepped fashion.
7.
The OLR shall have the ability to perform in slow
starting high inertia loads, or where a reduced
voltage softstarter is being used.
8.
The OLR shall have a settable transition time where
protection can be disabled during a start time from
1180 seconds to accommodate slow starting loads to
prevent nuisance tripping.
9.
The OLR shall have a definable run current that can be
used concurrently with the programmable transition
time to ensure a successful start and then enabling
all protection.
10.
The OLR shall have a dedicated remotemounted
display/operatorinterface option (C4411) for use with
enclosed control or motor control centers [Type 1
remote display] [Type 12 remote display] [Type 3R
remote display].
11.
The remote display shall be powered from the base unit
with no need for control power or a power supply.
12.
The base unit shall be able to communicate to the
remote display and use one of the industrial protocols
concurrently.
13.
The remote display shall allow for configuration,
monitoring, diagnostics, and control
14.
The OLR shall have an optional remotemounted HMI
capable of configuration, monitoring, diagnostics, and
control of numerous Motor Insight overload relays.
15.
The HMI shall be Eaton type XP Series or approved
equal.
16.
The OLR shall be equipped with the following optional
communication module  [Modbus 485 RTU] [Modbus 485
RTU with I/O] [DeviceNet with I/O] [PROFIBUS with I/O]
[Ethernet IP with I/O and webserver] [Modbus TCP with
I/O and webserver].
g.
All option communication modules capable of120 VAC or
24 VDC isolated inputs and form A B300 5 amp rated
output relays.
h.
All option communication modules with I/O must have 4
discrete inputs, and 2 discrete outputs.
i.
Must work with Power Xpert Gateway and Power Xpert
Software
OR
5.
SolidState Motor Management Relay C445
a.
Where indicated on the drawings, provide a
microprocessorbased Overload Relay (OLR) in each
starter and/or where indicated on the drawings for
protection, control and monitoring of the motors. The
OLR shall be Eaton type C445 (Power Xpert) relay. The
OLR shall meet UL 6094741, IEC/EN 6094741, IEC/EN
6094751, EN 609478, ATEX 95, and CSA 22.2 #6094741
standards
b.
The OLR shall offer a flexible modular form factor where
sensing and protection are broken out in order to
provide the most compact configuration possible
c.
The relay shall not require external current
transformers for applications up to 136 amperes for
motors rated less than 600 Vac. Where larger motors are
involved, external current transformers shall be used.
d.
The OLR shall provide both protection and control
functionality. OLR shall provide predefined operation
modes which define input and output behavior if used.
The following functionality shall support protection and
control.
1. 1— One primary Fault relay, NO contact with a rating
code of B300 per UL 6094741 to be used for both
protection and optional control of motor contactor or
MCCB
2. 1— A second output relay, NO contact with rating code
of B300 per UL 6094741 to be used in providing both
protection and optional control of a second contactor or
MCCB when used in wye/delta, two speed, autotransformer
and HMCP/MCCB applications. Output to be available for
general purpose use if not required by application.
3.1— A third output relay, NO/NC Form C output contact with rating
code of B300 per UL 6094741 that can be used in providing both
protection and optional control of a third contactor when used in
wye/delta, two speed dahlander, and autotransformer applications.
Output to be available for general purpose use if not required by
application
4. 1— An input able to accept 120Vac or 24Vdc run or start signal from
local or remote fieldwire control source when required
5.1— An input able to accept 120Vac or 24Vdc permissive signal from
local or remote fieldwire control source when required. Input to be
available for general purpose use if 3wire control is not used
6.1— An input able to accept 120Vac or 24Vdc reset signal from local
or remote fieldwire control source when required
7.1— An input able to accept 120Vac or 24Vdc remote signal from local
or remote fieldwire control source when required
8. 1— Trip status indicator
9.1— Ability to run 2wire or 3wire control schemes
10.1— Ability to accept local control signals from a user interface or
fieldwiring
11.1— Ability to accept remote control signals from a fieldbus network
or fieldwiring
e.
The OLR shall be capable of accommodating external current
transformers with ranges from 300:5, 600:5, and 800:5
amperes. Provide three (3) current transformers sized per
manufacturer’s recommendations based on motor fullload
amperes and service factor.
f.
The OLR shall accept 120/240 Vac OR 24 Vdc control power.
The OLR shall be suitable for application from 2080 Hz.
g.
The OLR shall have selectable trip classes 540.
h.
The OLR shall be equipped with an operatorinterface
(OI)/ display interface panel that is safely, remote
mountable on the panel door. The OI shall have the
following features for control, monitoring, programming
and diagnostics
1.1— Status LEDs that indicate a FAULT or WARN condition
1.2— Monitoring window to display current, voltage, power, thermal and
other motor system parameters with no network or setup required
1.3— Ability for customer to fully program and customize the device
using only the user interface
1.4—Setup Wizard for fast commissioning
1.5—Running, Stopped and Auto Status LEDs with user selectable LED
color schemes
1.6—Complete fault description on screen if fault event occurs
1.7—Access to 10 fault queue and trip snapshot
1.8—Dedicated Reset button, that may be disabled if desired
1.9—Optional Local Control functionality that is automatically
customized based on operation mode without the need for multiple part
numbers or user applied stickers, marking or programming
1.10—Powered off the base device, with no separate power source
required
1.11—Optional local password protection
1.12—MicroUSB port for connection to PCs
i.
The OLR shall protect and monitor the following
conditions. Where applicable, all protection types will
offer both trip and alarm settings with uniquely settable
delays.
1. Motor Protection consisting of:
a.
Thermal overload
b.
Instantaneous overcurrent
c.
Jam
d.
Stall
e.
Undercurrent
f.
Current unbalance
g.
Current phase loss
h.
Ground fault
i.
Allowed starts per hour
j.
Optional PTC protection (Positive Temperature
Coefficient)
2. Load protection consisting of :
a. Low power
b. High power
c. Power Factor Deviation
3. Line Protection consisting of:
a. Phase Rotation
b. Overvoltage
c. Undervoltage
d. Voltage unbalance
d. Phase loss
e. Frequency deviation (fast and slow)
f. Voltage loss restart algorithm providing automatic staggered
restart of motors during a voltage loss conditions offering (3) user
settable time intervals and individual restart delays
j.
The OLR shall have the following monitoring capabilities:
1.
Current—Average and phase RMS
2.
Current unbalance %
3.
Ground fault current
4.
Average motor current as % of FLA
5.
Maximum motor starting current
6.
Voltage—Average linetoline and L1L2, L2L3, L3L1
7.
Voltage unbalance %
8.
Power—Motor kW, VA, VARs, real energy, apparent
energy, reactive energy, peak demand
9.
Power factor
10.
Motor speed in RPM
11.
Motor torque
12.
Thermal memory %
13.
Frequency
14.
Motor state
15.
Operating seconds (total and resettable)
16.
Time to trip and reset
17.
PTC status
18.
Motor run time (total and resettable)
19.
Last measured starting time
20.
Number of starts (total and resettable)
21.
Number of contactor operations last hour
22.
Latest run time
k.
The OLR shall record the following data on fault
conditions
1.
Active fault
2.
Active warning
3.
Active inhibit
4.
Fault Queue – A list of last 10 faults shown in the
order they occurred
5.
Trip snapshot – 12 recorded parameters at time of trip
for last trip (current and voltage each phase, ground
current, frequency, thermal memory, VA, watts, power
factor), optionally time stamped
l.
 The OLR shall provide the following communications
without increasing the footprint of the device or
requiring a separate power source. The OLR shall provide
the user the option to configure communication loss
behavior to trip or hold last state.
1.
Onboard Modbus Serial
2.
 [PROFIBUS communication port with support for DVP0
and DVP1 messages] or [Ethernet communication ports
with support for Ethernet/IP and ModbusTCP messaging
and web pages. Ethernet will be in the form of a 2
port switch with port forwarding allowing
configuration in star, redundant ring topologies, and
redundant master topologies.]
3.
USB for connection to a PC for commissioning and
monitoring
4.
Free software tool for commissioning and monitoring,
which allows the user to save configuration files
5.
Embedded web pages (with Ethernet option)
m.
 The OLR shall provide the following optional
functionality
1.
Real time stamping
2.
Memory backup module that saves all configuration data
to nonvolatile memory and copies that data to a new
device in the event of device replacement
3.
Four versions of optional password protection –
Administrator, USB lockout, Running Lock and User
Interface
1.
NEMA Size 00 through 2 starters shall be suitable for the
addition of at least six (6) external auxiliary contacts of
any arrangement normally open or normally closed. Size 3
through 8 starters shall be suitable for the addition of up
to eight (8) external auxiliary contacts of any arrangement
normally open or normally closed
2.
Motor starters shall be Eaton FREEDOM Series or approved
equal
A.
Each starter shall be equipped with a fused control power
transformer, two (2) indicating lights, HandOffAuto (HOA)
selector switch, and two (2) normally open contacts, unless
otherwise scheduled on the drawings. A unitmounted device
panel shall have space to accommodate six (6) 30 mm oiltight
pilotcontrol devices or indicating ammeters, voltmeters, or
elapsed time meters. In order to improve maintenance
capabilities, the device panel shall withdraw with the unit.
Doormounted pilot devices are not acceptable.
B.
Solidstate reducedvoltage starters, Eaton type S811 shall be
provided where shown on the contract drawings. The solidstate
reducedvoltage starter shall be UL and CSA listed in the
motor control center, and consist of an SCRbased power
section, logic board and paralleling bypass contactor. The
paralleling bypass contactor shall be energized when the motor
reaches full speed. Each solidstate reduced voltage starter
shall have an addressable communication card capable of
transmitting control and diagnostic data over an open network
to either a personal computer or Logic Controller via network
translator to DeviceNet with I/O, Modbus 485, Modbus 485 with
I/O, Modbus TCP with I/O or Ethernet IP with I/O.
Note to spec. Writer:
for more detailed specification information for solidstate
reducedvoltage starters refer to section 16481, motor starters – low
voltage.
F.
Adjustable frequency drives shall be provided in MCC(s) where
scheduled. Adjustable frequency drives shall be Eaton type
MVX, MMX and/or SVX 9000 and/or DG1 for variable or constant
torque loads. Drives for variable torque loads shall be rated
a minimum of 110% overcurrent for one (1) minute. Drives
larger than [1] [10] horsepower shall have identical keypads,
control terminals and programmable parameters. Drives shall be
capable of providing 200% starting torque. Drives over 150
horsepower shall be located next to the main section to reduce
bus loading and heating. All controllers shall be combination
type and shall include options as specified. Drives shall have
communication cards capable of communication using 
[DeviceNet] [Profibus] [LonWorks] [Modbus RTU] [Interbus S]
[SDS].[Modbus TCP] [EtherNet/IP]. Drives shall be capable of
using a V/Hz, open loop vector, or closed loop vector control
architecture.
Note to spec. Writer:
for more detailed specification information for adjustable frequency
drives refer to section 16483 adjustable frequency drives.
7.
overcurrent devices
A.
Circuit Breakers
1.
Individual feeder breakers shall have a minimum
interrupting capacity of [65] [100] kAIC at rated
voltage or as scheduled on the drawings
B.
Fusible Switches
1.
Individual feeder switches shall be quickmake,
quickbreak gangoperated type, utilizing Class [R] [J]
fuse clips. The fused switch shall be rated 100 kAIC at
rated voltage
8.
AUTOMATIC INSULATION TESTER
A. Automatic insulation testers shall be provided for individual MCC
motor starter units where indicated on contract documents. The
insulation tester shall be rated for 600 VAC, 60 Hz, motor circuits.
When equipment motor is deenergized, the automatic insulation tester
shall automatically apply a 500VDC potential at a currentlimited,
operatorsafe, maximum amperage of 200 microamperes to “megger” the
insulation of the motor windings and the insulation of the circuit
between the automatic insulation tester and the motor. The automatic
insulation tester shall have a 10second time delay before alarm
circuit will activate. The insulation tester shall have an input of
120 VAC, 60 Hz and be interlocked with the starter such that the
insulation tester will continuously monitor the integrity of the
insulation during the period that the equipment motor is deenergized,
and upon detection of a leakage current to ground the insulation
tester shall provide a visual alarm indication. When the equipment
motor is energized, the insulation tester shall be interlocked with
the starter to automatically stop testing and be automatically
disconnected from the circuit. Insulation tester shall be equipped
with 1 (one) Form C latching alarm contact for remote alarm status.
Insulation tester shall be provided with a manual reset button and a
“teston” and “alarm” LED display. Automatic insulation tester shall
be Eaton Catalog No. MGRDGP500E. A 2 % analog doormount meter with a
color coded dial and a 0 – 200 megohm scale shall be provided for
insulation test indication. The megohm meter shall be Eaton Catalog
No. MGRDGP500E1. An additional 6” of space shall be allowed for this
option in size 1 and 2 starters.
9.
VOLTAGE PRESENCE INDICATOR
A. Voltage Presence Indicators shall be provided on the unit door of
MCC starter and feeder units as per contract documents. The voltage
presence indicator shall be a hardwired voltmeter or voltage detector
connected to the load side of the main incoming disconnect, and shall
provide a “throughdoor” visual indication at the MCC unit door of any
voltage presence in any individual phase to enable operators to
“preverify” voltage presence while the MCC unit door is safely
closed. The voltage presence indicator shall be equipped with an
adapter to enable installation in a 30mm devicepanel on the MCC unit
or any other standard 30mm pilot device knockout. The voltage presence
indicator shall be of potted construction with 6foot leads and
equipped with dual redundant circuitry to ensure reliability. The
voltage presence indicator shall also be phase insensitive, UL type 4X
listed and have immunity to high surges. The voltage presence
indicator shall be Eaton “VoltageVisionTM” Catalog No. R3W.
10.
Fieldbus communications
A.
DEVICENET DEVICES
1.
Motor Control Center assemblies shall be provided with a
factory assembled DeviceNet field bus communications
network providing direct connectivity between MCC
devices and the system controller and/or HMI.
2.
The DeviceNet system installed in the MCC shall include
a complete and tested cabling system compliant and
approved by the ODVA DeviceNet standard. The cabling
system shall consist of trunk and drop line cabling
including all splice and tap connectors and terminating
resistors. The trunk and drop cabling shall be 600 Volt
insulation and include electrical shielding as per the
standard ODVA DeviceNet specification. Nonstandard,
nonshielded flat cable will not be accepted.
3.
The trunk line shall be installed in the top horizontal
wireway of the MCC. The trunk line shall be thick cable
as specified by the ODVA standard. Sealed, threaded, and
keyed device tap connectors located and mounted in the
top horizontal wireway shall “T” off the top wireway to
drop cable mounted in each of the vertical wireways.
Each DeviceNet device shall have a dedicated drop line
connection via a T connector. The drop cable shall be
thin cable as specified by the ODVA standard. Each
section of motor control shall be connected with sealed,
threaded, and keyed device tap connectors located and
mounted in the top horizontal wireway. All cabling shall
be securely supported and attached to the MCC structure
in accordance with the contract drawings and the
manufacturer’s recommendations.
4.
DeviceNet communications modules shall be provided at
each device interfacing to the DeviceNet field bus. The
communications modules shall be installed in the unit
device compartment or bucket, and shall be
directconnected to the DeviceNet drop cable. Each
device shall be provided with the appropriate factory
fabricated cable for interfacing the communications
module with the associated DeviceNet device.
5.
Port expanders shall be provided where required to
permit multiple device communications. The port expander
shall be installed in the associated unit device
compartment.
6.
Motor control centers shall provide required 24 VDC
power to adequately supply power to all the devices in
the [MCC] [Total System], and shall be sized as shown
in drawings. The power supply shall be installed in an
MCC unit with a disconnect switch, supplementary
protection and a cable tap box to prevent damage to/from
other power supplies on the network.
7.
Operator interface unit(s) shall be an Eaton XP Series
or approved equal.. Operator interface units shall be
able to display the following: starter status,
threephase current, control voltage, overload condition
(alarm), cause of device trip, operations count, run
time, set points, starter description and
identification, and system process graphics screens.
Operator interface shall have the capability of
communicating on the DeviceNet network.
B.
PROFIBUS DEVICES
1.
Motor Control Center assemblies shall be provided with a
factory assembled PROFIBUS field bus communications
network providing direct connectivity between MCC
devices and the system controller and/or HMI.
2.
The PROFIBBUS system installed in the MCC shall include
a complete and tested cabling system compliant and
approved by the PTO standard. The cabling system shall
be a daisy chain using PROFIBUS connectors between each
PROFIBUS device. The PROFIBUS cabling shall be 600 Volt
insulation and include electrical shielding as per the
standard PTO specification. Nonstandard, nonshielded
cable will not be accepted.
3.
Each shipping split of motor control shall be connected
with sealed, threaded, and keyed connectors located and
mounted in the top horizontal wireway. All cabling shall
be securely supported and attached to the MCC structure
in accordance with the contract drawings and the
manufacturer’s recommendations.
4.
PROFIBUS communications modules shall be provided at
each device interfacing to the PROFIBUS field bus. The
communications modules shall be installed in the unit
device compartment or bucket, and shall be
directconnected to the PROFIBUS communication cable.
Each device shall be provided with the appropriate
factory fabricated cable for interfacing the
communications module with the associated PROFIBUS
device.
5.
Port expanders shall be provided where required to
permit multiple device communications. The port expander
shall be installed in the associated unit device
compartment.
6.
Motor control centers shall provide required 24 VDC
power to adequately supply power to all the devices in
the [MCC] [Total System], and shall be sized as shown
in drawings. The power supply shall be installed in an
MCC unit with a disconnect switch, supplementary
protection and a cable tap box to prevent damage to/from
other power supplies on the network.
7.
Operator interface unit(s) shall be an Eaton XP Series
or approved equal. Operator interface units shall be
able to display the following: starter status,
threephase current, control voltage, overload condition
(alarm), cause of device trip, operations count, run
time, set points, starter description and
identification, and system process graphics screens.
Operator interface shall have the capability of
communicating on the PROFIBUS network.
C.
MODBUS TCP DEVICES
1.
Motor Control Center assemblies shall be provided with a
factory assembled Modbus TCP field bus communications
network providing direct connectivity between MCC
devices and the system controller and/or HMI.
2.
Motor control centers shall provide a required Ethernet
10/100 auto negotiate industrial switch per lineup. The
Ethernet switch shall have sufficient ports available to
connect to each Modbus TCP device and have at least 2
open ports for a customer connection and a PC connection
for maintenance.
3.
The Ethernet switch shall be mounted in the top
removable unit of each vertical section or shipping
split and not in the vertical wireway. If required by
the application, the switch shall be capable of
connecting to multiple sections.
4.
The Modbus TCP system installed in the MCC shall include
a complete and tested cabling system. The cabling system
shall be Cat 5 and consist of home run connections from
the device to a switch located in the MCC. Nonstandard,
nonshielded cable will not be accepted.
5.
All cabling shall be securely supported and attached to
the MCC structure in accordance with the contract
drawings and the manufacturer’s recommendations.
6.
Modbus TCP communications modules shall be provided at
each device interfacing to the Modbus TCP field bus. The
communications modules shall be installed in the unit
device compartment or bucket, and shall be
directconnected to the Modbus TCP Ethernet cable. Each
device shall be provided with the appropriate factory
fabricated cable for interfacing the communications
module with the associated Modbus TCP device.
7.
Operator interface unit(s) shall be an Eaton XP Series
or approved equal. Operator interface units shall be
able to display the following: starter status,
threephase current, control voltage, overload condition
(alarm), cause of device trip, operations count, run
time, set points, starter description and
identification, and system process graphics screens.
Operator interface shall have the capability of
communicating on the Modbus TCP network.
D.
MODBUS SERIAL DEVICES
1.
Motor Control Center assemblies shall be provided with a
factory assembled Modbus RTU field bus communications
network providing direct connectivity between MCC
devices and the system controller and/or HMI.
2.
The Modbus RTU system installed in the MCC shall include
a complete and tested cabling system compliant and
approved by Modbus standard. The cabling system shall be
a daisy chain using shielded twisted pair cable between
each Modbus RTU device. The Modbus RTU cabling shall be
600 Volt insulation and include electrical shielding,
nonstandard, nonshielded cable will not be accepted.
3.
Each shipping split of motor control shall allow for the
Modbus RTU cable to be disconnected for shipment and
then reconnected during installation. All cabling shall
be securely supported and attached to the MCC structure
in accordance with the contract drawings and the
manufacturer’s recommendations.
4.
Modbus RTU communications modules shall be provided at
each device interfacing to the Modbus RTU field bus. The
communications modules shall be installed in the unit
device compartment or bucket, and shall be
directconnected to the Modbus RTU communication cable.
Each device shall be provided with the appropriate
factory fabricated cable for interfacing the
communications module with the associated Modbus RTU
device.
5.
Operator interface unit(s) shall be an Eaton XP Series
or approved equal. Operator interface units shall be
able to display the following: starter status,
threephase current, control voltage, overload condition
(alarm), cause of device trip, operations count, run
time, set points, starter description and
identification, and system process graphics screens.
Operator interface shall have the capability of
communicating on the Modbus RTU network.
E.
EHTERNET/IP DEVICES
1.
Motor Control Center assemblies shall be provided with a
factory assembled EtherNet/IP field bus communications
network providing direct connectivity between MCC
devices and the system controller and/or HMI.
2.
Ethernet 10/100 auto negotiate layer 2 managed
industrial switches shall be provided as required in the
MCC lineup. The Ethernet switch shall have sufficient
ports available to connect to each EtherNet/IP device
and have at least 2 open ports for a customer connection
and a PC connection for maintenance. The Ethernet switch
shall be mounted in the top removable unit of each
vertical section or shipping split and not in the
vertical wireway. If required by the application, the
switch shall be capable of connecting to multiple
sections.
3.
The EtherNet/IP system installed in the MCC shall
include a complete and tested cabling system. The
cabling system shall be 600V Cat 5 and consist of home
run connections from the device to a switch located in
the MCC and in accordance with the ODVA specification.
Nonstandard, nonshielded cable will not be accepted.
4.
It shall be permissible to daisy chain Ethernet/IP
devices using a 2port switch configuration in each
device unit or bucket and not use the home run topology.
5.
All cabling shall be securely supported and attached to
the MCC structure in accordance with the contract
drawings and the manufacturer’s recommendations.
6.
EtherNet/IP communications modules shall be provided at
each device interfacing to the EtherNet/IP field bus.
The communications modules shall be installed in the
unit device compartment or bucket, and shall be
directconnected to the EtherNet/IP Ethernet cable. Each
device shall be provided with the appropriate factory
fabricated cable for interfacing the communications
module with the associated EtherNet/IP device.
7.
Operator interface unit(s) shall be an Eaton XP Series
or approved equal. PanelMate [Power] [ePro] Series.
Operator interface units shall be able to display the
following: starter status, threephase current, control
voltage, overload condition (alarm), cause of device
trip, operations count, run time, set points, starter
description and identification, and system process
graphics screens. Operator interface shall have the
capability of communicating on the EtherNet/IP network.
11.
misCellaneous devices
12.
incoming Feeder terminations and device
A.
Incoming [cable] [busway] shall terminate within the
control center on a [main lug] [main breaker] termination
point. Main lug terminations shall have adequate dedicated
space for the type and size of cable used and the lugs shall
be [standard mechanical screw] [compressiontype] with
antiturn feature. Main breakers shall be provided as
indicated on the drawings and shall be [molded case] [power
circuit breakers, stored energy device].
13.
OWNER Metering
A.
Where indicated on the drawings, provide a separate, owner
metering compartment with front hinged door.
B.
Provide as a minimum of three (3) current transformers for
each meter. Current transformers shall be wired to
shortingtype terminal blocks.
C.
Provide [potential transformers including primary and
secondary fuses with disconnecting means] [fused potential
taps as the potential source] for metering as shown on the
drawings.
*Note to spec. Writer:
select devices as required for paragraph 2.13.D
Refer to section 16901 for detailed specification for metering.
D.
MicroprocessorBased Metering System.
E.
 WebEnabled Communications
1.
Where indicated on the drawings, provide a
separate compartment with a front facing hinged door as a
central point of connection for all internally located
communicating devices to an external Ethernet network and
allow close monitoring of the power infrastructure with
realtime, webenabled data.
2.
The compartment shall have a lockable, hinged door with a
functional throughthedoor RJ45 network access port.
Power for the components in the compartment shall be
supplied by a prewired, busconnected control transformer
in the compartment that is fused and has a disconnecting
means.
3.
The included communications components shall be a [Power
Xpert Ethernet Switch(es)] [Power Xpert Gateway(s)], which
[is] [are] specified in Section 169111(should specify
paragraphs in the section.
1.
Enclosures
A.
The type of enclosure shall be in accordance with NEMA
standards for [type 1A with gasketed doors] [type 12
dusttight and dripproof] [type 3R nonwalkin] [type 3R
walkin aisle] [type 3R walkin tunnel]. All enclosing sheet
steel, wireways and unit doors shall be gasketed.
2.
nameplates
A.
Each unit will have a 1.0 x 2.5inch engraved nameplate. The
lettering shall be 3/16inch high, black on a white
background.
3.
finish
A.
The control center shall be given a phosphatizing
pretreatment. The paint coating shall be a polyester
urethane, thermosetting powder paint. Manufacturer’s
standard color shall be used. All structural steel and
panels will be painted.
B.
The control center finish shall pass 600 hours of
corrosionresistance testing per
ASTM B 117.
4.
Clean motor control center
A.
The Clean Motor Control Center shall consist of a Eaton
F2100 design Motor Control Center and integral harmonic
correction unit for the attenuation of harmonics induced by
nonlinear loads such as ac Adjustable Frequency Drives.
B.
The harmonic correction unit for the Clean Motor Control
Center shall be in a totally enclosed deadfront and
incorporated into the MCC assembly complete with pass
through bus allowing for future expansion of the MCC.
Structures shall be 90 inches high and 21 inches deep for
frontmounted units. Structures shall contain a horizontal
wireway at the top, isolated from the horizontal bus by
metal barriers and shall be readily accessible through a
hinged cover. Adequate space for conduit and wiring to enter
the top or bottom shall be provided without structural
interference.
C.
An operating mechanism shall be mounted on the primary of
each harmonic correction unit. It shall be mechanically
interlocked with the door to prevent access unless the
disconnect is in the “OFF” position. A defeater shall be
provided to bypass this interlock. With the door open, an
interlock shall be provided to prevent inadvertent closing
of the disconnect. Padlocking facilities shall be provided
to positively lock the disconnect in the “OFF” position with
from one (1) to three (3) padlocks with the door open or
closed.
D.
Harmonic Correction Units shall be disconnected from the
power source by a molded case switch. All units shall
include 200,000 AIC rated fuses with Class T actuation. All
units shall be provided with a grounding lug. Grounding by
the contractor shall be performed according to local and
national standards.
E.
The harmonic correction units shall be sized to meet 5%
total harmonic current distortion {THD (I)}, 5% total demand
distortion (TDD), and <5% total harmonic voltage distortion
{THD (V)} levels as defined by IEEE 5191992 at [incoming
line terminals of the motor control center] [system Point of
Common Coupling as defined in IEEE519]. The harmonic
correction unit shall be integral to Eaton F2100 Motor
Control Centers.
F.
The harmonic correction unit shall be designed in accordance
with the applicable sections of the following standards.
Where a conflict arises between these standards and this
specification, this specification shall govern.
1.
ANSI IEEE standard C62.411991 [Surge Withstand
Capacity]
2.
CSA 22.2, No. 14 & 66 [CSA requirements for power
electronics]
3.
FCC Part 15, Sub Part J, Class A [RFI/EMI emission
standards]
4.
ANSI IEEE standard 5191992 [Harmonic limits]
5.
UL 508C [UL requirements for power conversion equipment]
G.
The motor control center manufacturer shall install the
harmonic correction unit in the motor control center. The
harmonic correction unit shall be approved by UL or CSA for
installation in the motor control center.
H.
Modes of Operation
1.
The harmonic correction unit shall be designed to
electronically inject harmonic current to cancel load
produced harmonic current such that the upstream power
harmonic current and voltage are reduced to below 5% TDD
and 5% THD (V) as defined by ANSI IEEE standard 5191992
for load demand and voltage distortion limits. TDD as
used herein refers to the total load demand of the
applied circuit. The applied circuit may be a single
nonlinear load, an entire distribution bus load, or the
facility load at the PointofCommon Coupling (PCC)
2.
Reactive current compensation (displacement power factor
correction) shall be activated via a digital
keypad/display mounted on the door of the enclosure.
When reactive current compensation is activated, the
harmonic correction unit shall first perform harmonic
current correction and then use the remaining capacity
to inject reactive current compensation to the specified
level herein defined
I.
Design
1.
Each unit of the harmonic correction units shall meet
FCC Part 15, Sub Part J, Class A requirements for both
radiated and conducted EMI
2.
All harmonic correction units shall be defined as a
power electronic device consisting of power
semiconductors that switch into the AC lines to modulate
its output to cancel detrimental harmonic and/or
reactive currents. A DC bus shall store power for power
semiconductor switching. A microprocessor shall control
the operation of the power converter
3.
Each unit shall be designed with a current limiting
function to protect the semiconductors. When this level
is attained, a message shall be displayed indicating the
output capacity is atmaximum capacity and actuate the
atmaximum capacity relay. Operation shall continue
indefinitely at this level without trip off or
destruction of the power correction unit
4.
Two distinct levels of faults shall be employed.
Noncritical level faults will provide automatic restart
and a return to normal operation upon automatic fault
clearance. Critical level faults stop the function of
the unit and await operator action
a.
Faults such as ac line overvoltage, AC line
undervoltage, AC line power loss, and AC line phase
imbalance shall be automatically restarted. Upon
removal of these fault conditions, the power
correction system shall restart without user action.
Automatic restart will not occur if 5 faults have
occurred in less than 5 minutes. During the fault
condition, except line loss, the display shall state
the type of fault and indicate that automatic
restart will occur. The run relay and run LED shall
be disabled. The fault relay shall not be enabled
unless time out occurs. Upon AC line loss, the
poweron relay shall be disabled and no display
shall be provided.
b.
All other types of faults shall be considered
critical and stop the power correction system. The
display shall indicate the fault condition and
“STOP.” The run LED and relay shall be disabled and
the fault relay enabled. User shall be required to
initiate a power reset (turn power OFF and ON) to
restart the power correction system.
5.
The logic of the harmonic correction unit shall monitor
the load current by utilizing two (2) current
transformers (CT’s) mounted on phases A and B to direct
the function of the power electronic converter. A third
current transformer is required if singlephase or
threephase linetoneutral connected loads are present
downstream from the location of the CT’s. The ratio of
the CT’s must be entered into the logic via the digital
keypad/display to calibrate the operation of the power
correction system. The output of the current
transformers shall be 5 amperes
6.
Up to three (3) harmonic correction units may be
installed in parallel to inject current according to the
information received from one set of CT’s. The units
will function independently. If one unit is stopped or
faulted, the remaining units will adjust accordingly to
maintain optimum harmonic cancellation levels up to the
capacity of the remaining units
J.
Performance Requirements
1.
Input Power:
a.
Voltage: 480 Volt, 3phase, 3wire, plus ground
b.
Voltage Tolerance: +/ 10% of nominal
c.
Frequency: 60 Hz, +/ 5%
d.
Current Limit: 100% of rating
e.
Surge Withstand Capability: ANSI/IEEE std.
C62.411991 without damage
f.
Input Fuses: Rated at 200 kAIC, Class J.
K.
Output Performance
1.
Performance of the harmonic correction unit shall be
independent of the impedance of the power source. All
performance levels shall be attained whether on the ac
lines or backup generator or output of the
uninterruptible power supply (UPS)
2.
Harmonic Correction:
a.
Limit 2nd through 50th order harmonic current to <5%
TDD as defined in ANSI/IEEE STD 5191992 at each
installed location. Harmonic levels for individual
harmonic orders shall comply with respective levels
established in ANSI/IEEE STD 5191992.
b.
Limit the THD (V) added to the electrical system
immediately upstream of the power correction system
location(s) to less than or equal to 5% as defined
in ANSI/IEEE STD 5191992. The power correction
system shall not correct for utility supplied
voltage distortion levels.
3.
Reactive Current Compensation: to .90 lagging
displacement power factor. Leading power factor is not
permitted
L.
Environmental Conditions
1.
The harmonic correction unit shall be able to withstand
the following environmental conditions without damage or
degradation of operating characteristics or life
a.
Operating Ambient Temperature: 0 degrees C (32
degrees F) to 40 degrees C (104 degrees F).
b.
Storage Temperature: 40 degrees C (40 degrees F)
to 65 degrees C (149 degrees F).
c.
Relative Humidity: 0 to 95%, noncondensing.
d.
Altitude: Operating to 2000 meters (6500 ft).
Derated for higher elevations.
e.
Audible Noise: Generated by power correction system
not to exceed 65 dbA measured 1
meter from surface of unit.
f.
Vibration: Seismic Zone 4.
A.
Current Transformers
1.
Split core type current transformers shall be installed as
defined herein and shown in the electrical drawings.
Current transformers shall be rated for the total rated
RMS current of the total load at each installed location
2.
Two current transformers per power correction system
location shall be provided and shall be mounted on phases
A and B. A third current transformer shall be provided if
single or threephase linetoneutral connected loads are
present downstream from the location of the CT’s
3.
Each current transformer shall have a current output of 5
amperes. Current capacity of each current transformer
shall be 5000, 3000, 1000 or 500, as required for the
electrical system where installed. No other ratings are
acceptable
4.
Each current transformer shall be rated for 400 Hz
B.
Operator Controls and Interface
1.
All units shall include a digital interface model (DIM)
that includes an alphanumeric display consisting of
2lines with 20 characters per line. All information shall
be in English. Operators include run, stop, setup, enter,
and up/down scroll
2.
The display shall provide operating data while
functioning. Standard operating parameters available for
display are ac line voltage, total RMS load current,
harmonic current of load, reactive current of load, output
harmonic and reactive current of power correction system
3.
When the output of the power correction unit is at full
rated capacity, the display shall indicate atmaximum
capacity and actuate an atmaximum capacity relay
4.
All fault conditions shall be displayed as they occur.
Diagnostic information shall be provided in English and
clearly indicate the nature of the fault
5.
The run pushbutton shall include a green LED. LED shall be
lighted when unit is running
6.
Contacts shall be provided for operator information for
poweron, run, fault and atmaximum capacity. Each contact
shall be rated for 1 ampere at 120/240 volts. One Form C
contact shall be provided for each relay
7.
An RS485 serial communication port shall be provided for
remote control and diagnostic information.
1.
execution
1.
factory testing
A.
Representative motor control centers shall have been
tested in a highpower laboratory to prove adequate
mechanical and electrical capabilities.
B.
All factory tests required by the latest ANSI, NEMA and UL
standards shall be performed.
C.
A certified test report of all standard production tests
shall be available to the Engineer upon request.
D.
The owner’s representative shall witness factory tests as
outlined above
1.
The manufacturer shall notify the owner two (2) weeks
prior to the date the tests are to be performed.
2.
field quality control
A.
Provide the services of a qualified factorytrained
manufacturer’s representative to perform startup of the
equipment specified under this section for a period of 
working days.
B.
The following minimum work shall be performed by the
Contractor under the technical direction of the
manufacturer’s service representative:
1.
Rig the MCC assembly into final location and install
on level surface
2.
Check all removable cells and starter units for easy
removal and insertion
3.
Perform insulation tests on each phase and verify
lowresistance ground connection on ground bus
4.
The Contractor shall provide three (3) copies of the
manufacturer’s field startup report.
3.
training
A.
The Contractor shall provide a training session for up to
five (5) owner’s representatives for  normal workdays
at the job site or other office location chosen by the
owner.
B.
A manufacturer’s qualified representative shall conduct
the training session.
C.
The training program shall consist of the following:
1.
Review of the MCC oneline drawings and schedules
2.
Review of the factory record shop drawings and
placement of the various cells
3.
Review of each type of starter cell, components
within, control, and power wiring
4.
Review contactor coil replacement and contact
replacement procedures
5.
Discuss the maintenance timetable and procedures to be
followed in an ongoing maintenance program
6.
Provide threering binders to participants complete
with copies of drawings and other course material
covered
4.
examination
A.
Contractor shall fully inspect shipments for damage and
report damage to manufacturer and file claim upon shipper,
if necessary.
B.
Contractor shall supply overload relay heater ratings that
are properly sized and coordinated for each motor starter
unit.
5.
installation
A.
Contractor shall follow the installation instructions
supplied by the manufacturer.
B.
Control wiring shall be as shown on the contract drawings
except as modified by the approval and submittal process.
Interface all local and remote devices into the control
wiring and operational systems for each load.
C.
As Shown on the contract drawing, Contractor is to
provide all DeviceNet trunk and drop cabling with
threaded, sealed and keyed device taps external to the
MCC.
6.
field adjustments
A.
The Contractor shall perform field adjustments of the
short circuit and overload devices as required to place
the equipment in final operating condition. The settings
shall be in accordance with the approved shortcircuit
study, protective device evaluation study, protective
device coordination study, manufacturer’s instruction
leaflets, and the contract documents.
7.
field testing
A.
Contractor is responsible for generation of a field report
on tests performed, test values experienced, etc., and
make the report available to owner upon request.
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16482A26 7/23/2014

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