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FLORIDA STATE UNIVERSITY
Invitation to Bid
ITB 5198-5
Interphase Transformers
Purchasing Specifications and Requirements
I.
GENERAL
The Florida State University is inviting bids from qualified firms to furnish all
labor, materials, equipment and incidentals required to complete all electrical
work at the National High Magnetic Filed Laboratory, Tallahassee, Florida as
specified in this ITB document.
II.
DEFINITIONS
Purchaser: National High Magnetic Filed Laboratory, hereinafter referred to as NHML.
Vendor: The bidder who submits the successful bid and receives a purchase order from
the University based on and incorporating the terms, conditions and prices listed in this
solicitation.
ITB: Invitation to Bid.
III.
SPECIAL CONDITIONS
1. Submission of Mandatory Forms: Bidders are required to return the ITB
“Acknowledgment Form” with their bid. A representative who is authorized
to contractually bind the Bidder shall sign the Acknowledgment Form.
2. Any addenda issued by the University to participating Bidders shall include an
“Addenda Acknowledgment Form.” This form shall be signed by a company
representative, dated and returned with the ITB response. Failure to return an
“Addenda Acknowledgment Form” for any and all addendum issued for this
ITB may be grounds for rejection of that Bid.
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3. Bidders shall submit their bid on or before the date and time indicated in the
area entitled “Calendar of Events” in the ITB, with all “Cost and Service
Quotes” sealed in a clearly identified envelope, to the address listed on the
“ITB Acknowledge Form.”
4. Bidders shall submit all costs and services proposed in the format specified.
5. In accordance with s.119.07 (3) (m), Florida Statutes, public review of
responses to a competitive solicitation maybe denied until the notice of a
decision is posted or until the notice of a decision is posted or until 10 days
after the competitive solicitation display, whichever occurs first.
6. No negotiations, decisions, or actions shall be initiated or executed by the
Bidder as a result of any discussion with any University employee. Only
those communications which are in writing from the University Purchasing
Department shall be considered as a dully authorized expression on behalf of
the University. Also, the University will recognize only communications
from Bidders which are signed and in writing as duly authorized expressions
on behalf of the Bidder.
7. A bidder’s written submission in response to the ITB shall be considered
as the bidder’s formal offer. The content of the ITB, the bidder’s submission
in response to the ITB, and resulting purchase order, shall be considered the
entire agreement between the successful bidder and the University.
8. Bidders shall examine the ITB to determine if the University’s requirements
are clearly stated. If there are any requirements which are too vague or
restrict competition, the bidder may request, in writing, that the specifications
be changed. A bidder who requests changes in the specifications must
identify the University’s specifications; must provide detailed justification for
the change, and must provide a recommended change to the specification.
Requests for changes must be received in the Purchasing Department by the
close of the business day, not later than the entry noted in the “Calendar of
Events” area of this ITB. A bidder’s failure to request changes by the
permissible date shall be considered acceptance of the University’s
specifications. The University reserves the right to determine which changes
to the ITB shall be acceptable to the University. If required, the University
shall issue an addendum reflecting the changes to the ITB. This addendum
shall be posted on the FSU Purchasing Web Site (www.purchasing.fsu.edu) in
order that each bidder is given the opportunity to review requested changes
and the FSU responses. Said specifications shall be considered the
University’s minimum mandate requirements. Any protest based on the
specifications must be delivered to the University Purchasing Department no
later than the close of the business day for that event listed in the “Calendar of
Events” area of this ITB.
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8. Bidders may not consider any verbal instructions as an official expression on
the University’s behalf. Only written communications, signed by a duly
authorized representative of the Purchasing office shall be considered valid.
9. The absolute deadline for receiving sealed bid is listed in the
“Calendar of the Events” area of this ITB.
10. The completed bid must be delivered to the Purchasing Department, Florida
State University, A1400 University Center, Tallahassee, Florida 32306-2370.
Delivery to any other point on or off campus is not acceptable and shall be
grounds for rejection of the bid. The ITB number shall be clearly indicted
on the outside of any packaging.
11. A Solicitation Tabulation which serves as the “Notice of Award” will be
posted on the FSU Purchasing website for review by interested parties at the
University Purchasing Department on or before 4:30 p.m. on the day noted in
the “Calendar of Events” area of this ITB.
12. In addition to the requirements of Paragraph (9) titled “Awards” on the
attached Request for Bid Acknowledgment the University shall not be liable
to pay for information obtained from or through any bidder prior to issuing the
purchase order to the successful Bidder. Any bid which fails to meet the
mandatory requirements stated in the ITB shall be rejected. Any bid that does
not comply with the functional, cost or contractual requirement in the ITB
shall be rejected.
The University reserves the right to waive minor irregularities in bid,
providing such action is in are defined as those that have no adverse effect on
the University’s interest, will not effect the amount of the bid and will not
give a bidder an advantage or benefit not enjoyed by another bidder.
13. Each bid shall be prepared simply and economically, providing a straight
forward, concise delineation of the Bidder’s capabilities to satisfy the
requirements of the ITB. Fancy binding, colored display and promotional
material are not desired. However, technical literature, drawings, and pictures
of proposed equipment should be included in the bid. Emphasis in each bid
must be on completeness and clarity of contents. In order to expedite the
evaluation of bid, it is essential that bidders follow the format and instructions
contained herein.
14. The successful Bidder shall allow public access to all documents, papers,
letters or other material subject to the provisions of Section 119.07, F.S.and
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made or received by him/her in conjunctions with the purchase order resulting
from this ITB. Refusal by the successful Bidder to allow such public access
shall be grounds for cancellation of the purchase order by the University.
15. Any amendments, alterations or modifications to the purchase order resulting
from this ITB must be by change order issued by the Purchasing Department.
The validity, construction, and effect of the purchase order shall be governed
by the laws of the State of Florida. The University, as an agency of the State
of Florida, is entitled to the benefits of sovereign immunity including
immunities for taxation.
16. Under no circumstances shall the successful Bidder assign to a third party any
right or obligation of successful Bidder pursuant to this bid without prior
written consent of the UNIVERSITY. If the successful bidder is, or during the
term of the purchase order resulting from this ITB becomes, an individual on
the payroll of the State of Florida, successful Bidder represents that he or she
has complied with all applicable provisions in the Florida Statutes and Florida
Administrative Code regarding outside or dual employment and
compensation.
17. Any purchase order resulting from this ITB will be governed by and under
the jurisdiction of the Law and Rules of Florida and any provisions in
conflict there with shall be void and of no effect.
18. In the event of extension error(s) the unit price will prevail and the bidder's
total offer will be corrected accordingly. In the event of addition errors, the
extended totals will prevail and the bidder's total offer will be corrected
accordingly. Bidder's must check their bid for any such errors and state the
discount(s) where applicable.
19. The Bidder's point of contact for all matters relating to the ITB is Dan
Bull, Florida State University Purchasing Department, A1400 University
Center, Tallahassee, Florida 32306-2370, Voice (850) 644-9720, FAX (850)
644-8921 or E-Mail: [email protected]. Written questions on this ITB
must be submitted to Dan Bull. All requests for information must be in
writing, and can be submitted by either letter, fax, or e-mail. Questions must
be received by the date listed for that event in the Calendar of Events. After
that date no queries regarding the bid will be accepted.
Each Bidder shall identify in its submittal the single point of contact for all
matters relating to the response.
20. Sealed bid will be accepted until the date and hour listed in the Calendar of
Events, at the Florida State University Purchasing Department, A1400 University
Center, Tallahassee, Florida 32306-2370, at which time a public opening will take
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place. All bid shall be identified with the bid number clearly indicated on the
outside of the parcel the bid in which the parcel arrives. Bid received after that
date and time will be rejected.
Faxed bid will not be accepted.
21.
The following Special Condition supersedes General Condition Number 21, titled
"Liability":
Vendor's entire liability and the University's exclusive remedy shall be as follows:
In all situations involving performance or non-performance of machines or programming
furnished under this agreement, the University's (the Buyer) remedy is:
(a) the adjustment or repair of the machine or replacement of its parts by Vendor,
or, at Vendor's option, replacement of the machine or correction of
programming errors, or
(b) if, after repeated efforts, Vendor is unable to install the machine or a
replacement machine, model upgrade or feature in good working order, or
to restore it to good working order, or to make programming operate, all
as warranted, the University shall be entitled to recover actual damages to
the limits set forth in this provision. For any other claim concerning
performance or non-performance by Seller pursuant to, or in any other
way related to the subject matter of, this Agreement or any order under
this Agreement, the University shall be entitled to recover actual damages
to the limits set forth in this provision.
Vendor's liability for damages to the University for any cause whatsoever, and regardless
of the form of action, whether in contract or in tort including negligence, shall be limited
to the greater of $100,000 or the purchase price stated herein for the specific machines
that caused the damages or that the subject matter of, or are directly related to the cause
of action, the foregoing limitation of liability will not apply to:
(a)
(b)
(c)
the payment of cost and damage awards pertaining to patent and copyright
indemnity, or to
claims for reprocurement costs or the cost of cover pursuant to Rule 6C22.015(23) of the Florida Administrative Code
claims for personal injury or damage to real or personal property caused
by Seller's tortuous conduct.
Vendor shall hold and save the University harmless for any and all suits and judgments
against the State for personal injury or damage to real or personal property
caused
by Vendor's tortuous conduct in the performance of this Agreement provided that:
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(a)
the University promptly notifies the Vendor in writing of any claim, and
(b)
Vendor shall be given the opportunity, at its option, to participate and
associate with the University in the control, defense and trial of any claim
and any related settlement negotiations and, provided further, that with
respect to any claim, or portion thereof, for which Vendor agrees at the
initiation of such claim that vendor shall save and hold the University
harmless, Vendor shall have the sole control of the defense, trial and any
related settlement negotiations, and
(c)
the university fully cooperated with vendor in the defense of any claim.
In no event, however, will Vendor be liable for:
(a)
any damages caused by the University's failure to perform the University's
responsibilities, or for
(b)
any lost profits or other consequential damages, even if Seller has been
advised of the possibility of such damages, or for
(c)
any claim against the University by any other party, except as provided in
the hold harmless provision of the preceding paragraph of this provision and
except as provided in the entitled or non-performance or machines or
programming located outside the United States or Puerto Rico.
Any exceptions to the terms and conditions listed in this document must be indicted at the
time of the response and included in the response. These are the standard terms and
conditions the Florida State University operates under and any suggested changes must
be reviewed by our legal council and may be rejected.
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Interphase Transformers, Filter Inductor
Specifications
This is a request for bid for eight high current 6–pulse interphase transformers, for four
high current 12–pulse interphase transformers, and for four high current filter inductors.
The 12–pulse interphase transformers and the filter inductors are to be stacked two high,
resulting in four interphase/filter reactor assemblies.
It is preferred that all of this equipment be delivered 16 weeks after the purchase order is
issued. We can consider longer delivery times if necessary.
1.1 Introduction
The National High Magnetic Field Laboratory (NHMFL) has installed four 24-pulse
rectifiers, also called power supplies. (Details of the power supply design can be found in
a paper with the title “Design and Operation of a 40 MW Highly Stabilized Power
Supply”. A copy of the paper is attached to these specifications.) Each 24-pulse rectifier
consists of two parallel-connected 12-pulse rectifiers; and each 12-pulse rectifier consists
of two parallel-connected 6-pulse rectifiers. All rectifiers are phase controlled. Parallel
operation of two 6-pulse rectifiers is accomplished by means of an interphase
transformer. In the existing system, the two unconventional interphase reactors (labeled
interphase/filter reactors) between the two 12–pulse rectifiers of each power supply serve
a dual function, providing reactance to the circulating current of the two 12-pulse
converters and also providing the inductance for the series connected passive filter.
All existing interphase transformers must be replaced because the rectifiers are being
upgraded to higher voltage and current ratings. All new 6-pulse interphase transformers
will be a direct physical replacement for the existing units, except for higher voltage and
current ratings. The two unconventional 12-pulse interphase/filter reactors of each power
supply will be replaced by one conventional 12-pulse interphase transformer and one
separate filter reactor. The new 6–pulse interphase transformers will be installed in the
same locations as the old units, therefore the physical dimensions of the new transformers
can be only slightly larger than the existing transformers. The physical dimensions of the
new conventional 12–pulse interphase transformers and separate filter inductors are less
restricted but will be required to fit into the existing cabinets in the space presently
occupied by the interphase/filter reactors. In each power supply, the 12-pulse interphase
transformer must be mounted on top of the filter inductor.
The 6–pulse interphase transformers are labeled IPT in Fig. 1 of the paper. As shown in
Fig. 1 of the paper, there are two interphase transformers in each 24-pulse power supply
and therefore eight altogether. Each interphase transformer is installed in the negative
output of two paralleled, six-pulse rectifiers. Each interphase transformer is installed in a
different cabinet, each of which houses one 12-pulse rectifier. The interphase
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transformers are located on the floor under the two 6-pulse rectifiers as shown in Figure 1
below. The no-load voltage of each 6-pulse rectifier can reach 950 Vdc.
In the existing system, there are also two unconventional 12-pulse interphase/filter
reactors in each power supply. As is shown in Fig. 1 of the above mentioned paper, these
units are connected to both the positive and negative terminal of each 12-pulse rectifier,
labeled “Converter #1” and “Converter #2”. The units are labeled by their inductance
values (46.5 μH). The physical construction of the units is in the form of an interphase
transformer with the two 46.5 μH windings of the positive terminal of Converter #1 and
#2 on one core and the two 46.5 μH windings of the negative terminal of Converter #1
and #2 on another core. To meet space requirements the two cores are stacked on top of
each other.
Interphase/Filter
Reactor
6 - pulse
Interphase Transformer
Figure 1. Part of one power supply showing two 6-pulse rectifiers, one 6- pulse
interphase transformer and one Interphase/filter reactor. This is the existing arrangement.
1.2 New Passive Filter Arrangement
In the new system, the 12–pulse interphase/filter reactors will be replaced by a
combination of a separate 12–pulse interphase transformer and a separate filter inductor.
The system is being changed to this new arrangement in order to reduce circulating
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currents between the 12–pulse converters while also maintaining an inductive component
for the passive filter. The new passive filter arrangement is shown in Figure 2 of these
specs. One input of the 12–pulse interphase transformer will be connected to the positive
terminals of Converter #1, and the other input will be connected to the positive terminals
of Converter #2. The output terminal of the interphase transformer will connect to the
positive bus of the passive filter. The filter inductor will be a two terminal device
connecting the outputs of the 6–pulse interphase transformers of Converter #1 and
Converter #2 to the negative bus of the passive filter. The 12–pulse interphase
transformer and the filter inductor must be stacked in order to fit into existing cabinets.
Drawings of the cabinet dimensions can be provided by the NHMFL.
Figure 2. New arrangement of the rectifiers and passive filter.
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1.2 Mode of Operation
The power supplies and with them the interphase transformers and filter reactors operate
15 hours per day, five days per week, though 22 hour, 7 day operation is possible. The
power supplies operate on the average about two-thirds of the time in a transient mode
and one-third in a steady-state, full power mode. In the transient mode the power supplies
ramp up from zero power to full power in about one minute (or longer) and then ramp
down to zero power during the next one minute (or more). The transient mode and the
steady-state mode are scheduled in a completely arbitrary way.
The fundamental frequency of the 6–pulse interphase transformer voltage in both modes
of operation is 360 Hz. The voltage across the interphase transformer during the steadystate, full power mode is approximately triangular in shape with a peak voltage of 140 V.
The maximum voltage across the 6–pulse interphase transformer occurs during the
transient mode at zero average output voltage when the voltage shape is rectangular with
peak amplitude of about 500 V. In the transient mode, the voltage shape of the 6–pulse
interphase transformer voltage changes constantly between these two mentioned
extremes.
The fundamental frequency of the 12–pulse interphase transformer voltage in both modes
of operation is 720 Hz. The voltage across this interphase transformer during the steadystate, full power mode is a square wave with a peak voltage of approximately 120 V.
Under low output current conditions, the voltage across the 12–pulse interphase
transformers is approximately triangular in shape with a peak voltage of 200 volts. In the
transient mode, the voltage shape of the 12–pulse interphase transformer voltage changes
constantly between these two mentioned extremes. All the reactors must be designed
thermally for steady-state operation.
1.3 Interphase Transformer Current Imbalance
The rectifier control system maintains a much closer current balance between rectifiers
than is normally seen in industry. The 6–pulse interphase transformer should be designed
for a maximum current imbalance of 200 amps DC at its input terminals. The 12–pulse
interphase transformer should be designed for a maximum current imbalance of 100 amps
DC at its input terminals.
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2.
6-Pulse Interphase Transformer Specifications
2.1 General
Number of units
Type
Number of terminals
2.2 Electrical
Winding direction of coil halves
Current rating of winding
Current rating of center terminal
Voltage between end terminals,
normal operation
worst case
Voltage class of unit
Frequency, normal operation
Flux density
DC resistance
Copper losses
Iron losses
Inductance
Inductance tolerance
Voltage level above ground
Winding to ground test voltage
Symmetrical short circuit current
for 150 ms
Winding material
Air gap
Iron core shape
Iron core material
2.3 Cooling
Type
Temperature rise
Water flow
2.4 Environmental conditions
Enclosure
Elevation
Ambient temperature
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dry type, iron core
3, one at each end, one in electrical center;
terminals must match existing layout. See
drawings in attachment “ Existing Units”
opposite, to avoid dc magnetization
6 kAdc, continuous
12 kAdc, continuous
500 Vac , square wave
1000 Vdc
1.2 kV
360 Hz
≤ 0.4 T, ≤ 1.0 T flux swing
≤ 0.4 mΩ, end to end
≤ 15 kW
≤ 3 kW with 400 Vrms, 360 Hz applied to
terminals
0.5 mH, end to end, 0.125 mH end to center,
each end to center inductance should match
as closely as possible
± 10 %
750 Vdc
4000 Vac for 2 minutes
65 kA
copper
2, located inside coil
two windows
M6 or better
Water cooling
Windings 35 ºC
Water 15 ºC
5 GPM at 30 psi
none
60 m
≤ 30 ºC
11
2.4 Environmental conditions, continued
Humidity
Noise level
Dimensions
Clamping structure
20 to 95 %, non-condensing
<70 dB at 1 m
Existing device is 30.5” w, 26” d, 26“ h.
New device can be slightly larger. Final
dimensions are to be determined in
cooperation with NHMFL.
closed current loops not allowed
2.5 Protection
Trip temperature switch for windings
Trip switch to open at 90 º C
Alarm and trip temperature switch for water
Alarm switch to open at 70 º C
Trip switch to open at 90 º C
Trip water flow rate switch
Trip switch to close at ≥ 5 GPM
2.6 Lifetime
Expected lifetime
2.7 Terminals
3.
≥ 100 000 hrs
TBD in cooperation with NHMFL, to match
existing terminals
12-Pulse Interphase Transformer Specifications
3.1 General
Number of units
Type
Number of terminals
3.2 Electrical
Winding direction of coil halves
Current rating of winding
Current rating of center terminal
Voltage between end terminals,
normal operation
worst case
Voltage class of unit
Frequency, normal operation
Flux density
DC resistance
4, to be stacked on top of the filter inductor
dry type, iron core
3, one at each end, one in electrical center;
input and output terminals must be on
opposite sides of transformer. See drawings
in attachment “ Existing Units”
opposite, to avoid dc magnetization
12 kAdc, continuous
24 kAdc, continuous
200 Vac , square wave
1000 Vdc
1.2 kV
720 Hz
≤ 0.4 T, ≤ 1.0 T flux swing
≤ 0.28 mΩ, end to end
12
3.2 Electrical, continued
Copper losses
Iron losses
Inductance
Inductance tolerance
Voltage level above ground
Winding to ground test voltage
Symmetrical short circuit current
for 150 ms
Winding material
Air gap
Iron core shape
Iron core material
3.3 Cooling
Type
Temperature rise
Water flow
≤ 40 kW
≤ 1.5 kW with 400 Vrms, 720 Hz applied to
terminals
0.2 mH, end to end, 0.05 mH end to center,
each end to center inductance should match
as closely as possible
± 10 %
750 Vdc
4000 Vac for 2 minutes
80 kA
copper
2, located inside coil
two windows
M6 or better
Water cooling
Windings 35 ºC
Water 15 ºC
10 GPM at 30 psi
3.4 Environmental conditions
Enclosure
Elevation
Ambient temperature
Humidity
Noise level
Dimensions
none
60 m
≤ 30 ºC
20 to 95 %, non-condensing
<70 dB at 1 m
Should fit within approximately
33” w, 44” d, 36“ h. The device can be
slightly larger. Final dimensions are to be
determined in cooperation with NHMFL.
Clamping structure
closed current loops not allowed
3.5 Protection
Trip temperature switch for windings
Trip switch to open at 90 º C
Alarm and trip temperature switch for water
Alarm switch to open at 70 º C
Trip switch to open at 90 º C
Trip water flow rate switch
Trip switch to close at ≥ 10 GPM
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3.6 Lifetime
Expected lifetime
≥ 100 000 hrs
3.7 Terminals
TBD in cooperation with NHMFL
4.
Filter Inductor Specifications
4.1 General
Number of units
Type
Number of terminals
4, to be stacked beneath the 12–pulse
interphase transformer
dry type, iron core
2, terminals must be on opposite sides of
reactor. See drawings in attachment “
Existing Units”
4.2 Electrical
Current rating of winding
Voltage between terminals
normal operation
worst case
Voltage class of unit
Frequency, normal operation
Flux density
Dc resistance
Copper losses
Iron losses
Inductance
Inductance tolerance
Voltage level above ground
Winding to ground test voltage
Symmetrical short circuit current
for 150 ms
Winding material
Air gap
Iron core shape
Iron core material
4.3 Cooling
Type
Temperature rise
Water flow
24 kAdc, continuous
Approximately 120 V, Saw-tooth
1000 Vdc
1.2 kV
1440 Hz
≤ 0.4 T, ≤ 1.0 T flux swing
≤ 0.026 mΩ
≤ 15 kW
≤ 1 kW with 100 Vrms, 1440 Hz applied to
terminals
0.05 mH
± 10 %
750 Vdc
4000 Vac for 2 minutes
80 kA
copper
2, located inside coil
TBD by manufacturer
M6 or better
Water cooling
Windings 35 ºC
Water 15 ºC
10 GPM at 30 psi
14
4.4 Environmental conditions
Enclosure
Elevation
Ambient temperature
Humidity
Noise level
Dimensions
Clamping structure
none
60 m
≤ 30 ºC
20 to 95 %, non-condensing
70 dB at 1 m
Should fit within approximately
40” w, 66” d, 36“ h. The device can be
slightly larger. Dimensions to be determined
in cooperation with NHMFL.
closed current loops not allowed
4.5 Protection
Trip temperature switch for windings
Trip switch to open at 90 º C
Alarm and trip temperature switch for water
Alarm switch to open at 70 º C
Trip switch to open at 90 º C
Trip water flow rate switch
Trip switch to close at ≥ 10 GPM
4.6 Lifetime
Expected lifetime
≥ 100 000 hrs
4.7 Terminals
TBD in cooperation with NHMFL
5. Testing of Interphase Transformers and Filter Reactors
Each unit should be tested as suggested by the manufacturer, based on standard industry
practices. A list of these tests should be provided with the bid. These tests should be the
standard reactor tests, such as high pot tests, resistance and inductance measurements,
heating test at partial current, etc. In addition, as a minimum, the first 6-pulse and 12
pulse interphase transformer and the first filter reactor built should be tested at full
current rating for two hours. That testing can be done in-house at the supplier’s own
facility or at an independent testing laboratory. Those tests also can be done at the
NHMFL. NHMFL reserves the right to witness the tests, wherever they take place.
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6. Reactor Warranty
The reactors should be warranted for 12 months after being energized or 18 months after
being delivered, whichever condition comes first. If a reactor fails during the warranty
period, NHMFL will be responsible for removing the unit, getting it ready for shipment
and reinstalling the new/ reconditioned unit once repaired. Repair and shipping costs
must be paid by the manufacturer.
7. Additional Requirements after Bid Award
7.1 Before manufacturing has begun, provide NHMFL a detailed Design Memorandum
outlining the interphase and filter reactor design information (the engineering effort that
went into the design). NHMFL will review the design within 4 working days. Review
results can be communicated by telephone to vendor.
7.2 NHMFL reserves the right to inspect the manufacturing facility at any time during the
manufacturing process. NHMFL will give advanced notice of date of review.
7.3 NHMFL reserves the right to witness all the tests. NHMFL should be notified two
weeks in advance of the test dates.
7.4 Provide a short (one to two page) monthly progress report, including schedule update.
Any schedule slippage should be explained. Information should be provided to explain
what remedies are being applied to correct schedule slippage.
8. Bid Response Submittals
A total of 8 copies of the bid response shall be submitted.
The bid should include information in enough detail so that the members of the
evaluation committee are able to understand the design and manufacturing process of the
interphase and filter reactors. The following technical issues should be addressed for
both types of reactors but are not limited to:
8.1
Material selection, in particular of the core and conductor material
8.2
Conductor cross section
8.3
Flux density
8.4
Necessary cooling water flow (gallons/min), conductivity of water,
pressure drop
8.5
Core stacking procedure
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8. Bid Response Submittals, continued
8.6
Design of insulation
8.7
Winding process description
8.8
Dimensional drawing
8.9
Estimated Weight
8.10
Suggested acceptance tests
8.11
Inductance measured end to end and end to center
8.12
Information about mismatch of current in the winding halves necessary for
driving core into saturation
8.13
Recommended spare parts
8.14
Instructions for installation, storage and maintenance
8.15
Core losses at dominant frequency
8.16
Dc copper losses
8.17
Average winding temperature rise at rated current
8.18
Core dimensions and material
8.19
Core gap dimensions and their location
8.20
Design calculations
This minimum information should be provided for both the interphase transformers and
the filter inductors.
8.1 Additional Information
Each potential bidder is encouraged to visit the NHMFL before the beginning of the
official bidding process to discuss the component design and installation requirements
with NHMFL staff.
The following material is available for the vendor to use. If the vendor chooses to use
this material, provide separate line in bid response detailing price reduction based on this
option.
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The NHMFL will be responsible for shipping this material to your factory.
Outokumpu (Luvata) OF-OK Oxygen Free Copper Hollow Conductor No. 8494
Annealed; delivered in 100 kg pancake coils. The total weight of all coils is 4586kg.
#
OD
ID
x=y R
8494 15.88 9.52 3.18 1.5
* all dimensions are in mm.
kg/m
1.600
Alloy – ASTM C 10200 OF
Composition - Cu min 99.99% ; O max 0.0005%
Electrical Conductivity - %IACS 100 min ; 58.6 m/ohm mm^2 min
Thermal conductivity – 399 W/C m
Detailed information is available at:
http://www.luvata.com/Products-and-Services/Products/Rods-and-Profiles/HollowConductors-for-Generators/
9.0 Bid Bid Evaluation
The bid will be evaluated by a technical committee from the NHMFL. This committee
will be comprised of Andy Powell, John Kynoch, and Scott Hannahs. Each committee
member will determine if the bid meets the General Conditions and technical criteria
outlined in this specification. The vendor who meets the specifications and submits the
lowest price will be awarded the bid.
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9.1 Price Evaluation
Quoted price is to be FOB NHMFL in Tallahassee, Florida. Provide cost breakdown for
eight 6-pulse interphase reactors, four 12-pulse interphase reactors and four filter
reactors.(the 12-pulse interphase reactors and filter reactors will be double stacked filter
reactors assemblies). Provide a separate price discount if the Outokumpu 8494 copper
tubing will be used.
Price sheet must be on company letterhead and contain all information listed above.
10 Bid Schedule
10.1 Posted on FSU Website: October 12th
10.2 Deadline for Vendor Questions: October 26th
10.3 Deadline for FSU Responses: November 8th
10.4 Bid Responses Due: 2:30 P.M., November 8th
10.5 Award Decision Posted on FSU Website: November 13th
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