HomeMy WebLinkAboutCORRESPONDENCE - BID - 7646 500 KVA TRANSFORMER 3-PHASE PADMOUNTED 480Y/2773 Phase Padmounted Transformer Bid Evaluation
# Units 10 Bid #: 7646
Size 500 kVA Secondary V 277/480 Date: June 5, 2014
NL Loss Cost $ 3.90
FL Loss Cost $ 2.30
Specified
Impedance % 3.04 (See Impedance Requirements Table in Specification)
Supplier Manufacturer
Base Bid
$ / Each Del/Wks
Guar No
Load Loss Guar Full Load Loss Impedance Meet Specs? Escalation
Guar Total
Load Loss
Includes Winding's
Stray Losses & Losses
Associated with
Auxiliary Devices (Yes /
No)
Winding's
Stray
Losses
Losses
associated
with
Auxiliary
Devices
Impedance
Variance Evaluated Bid
Base Bid
Extended Cost
(Total $)
NL Loss * NL
Loss Cost
FL Loss * FL
Loss Cost
Rank Based on
Bid (1 is best
choice)
Rank Based on
Evaluated bid (1
is best choice)
Western United CG POWER $ 11,328.00 14-16 909 3503 2.99 Yes IS NOT 4412 yes 19 0 -1.64% $ 22,930.00 $ 113,280.00 $ 3,545.10 $ 8,056.90 4 3
Wesco ABB $ 10,601.05 11-Sep 716 4473 3.04 no - 5189 No 0 0 0.00% $ 23,681.35 $ 106,010.50 $ 2,792.40 $ 10,287.90 1 -
Western United HOWARD IND.10,83 $ 10,830.00 6 TO 8 WEEKS 1050 2787 3.20 Yes IS NOT 3837 yes 36.2 0 5.26% $ 21,335.10 $ 108,300.00 $ 4,095.00 $ 6,410.10 2 1
Border States Howard Industies $ 11,089.69 6-8 wks aro 1050 2787 3.20 Yes No 3837 - 36.2 0 5.26% $ 21,594.79 $ 110,896.90 $ 4,095.00 $ 6,410.10 3 2
American Site
Builders ? $ 21,017.70 12 948 3022 3.00 no - 3970 Yes 150 0 -1.32% $ 31,665.50 $ 210,177.00 $ 3,697.20 $ 6,950.60 6 -
Irby Cooper $ 14,195.00 11-13 weeks 1004 2963 3.04 Yes no 3967 yes 250 30 0.00% $ 24,925.50 $ 141,950.00 $ 3,915.60 $ 6,814.90 5 5
Notes:
1. Western United's bid on CG transformers looks to meet our specification
2. Wesco's bid for ABB transfomers did not submit approximate stray losses information, which does not meet our specification. This bid could be considered non responsive.
3. Western United's bid on Howard transformers mostly meets our specification. Howard takes exception to the 4 way pallet, which is acceptable to Fort Collins.
4. Border States' bid on Howard transformers mostly meets our specification. Howard takes exception to the 4 way pallet, which is acceptable to Fort Collins.
5. It is unclear whether American Site Builders is the vendor or manufacturer. Since they did not specify a manufacturer, we will assume that they are manufacturer and vendor. American
Site Builders is not on the approved manufacturers list.
Either way there is no information presented in their bid that shows they can manufacture a product that meets our specification. This bid will not be considered.
6. Irby's bid for Cooper Transformers has several exceptions. No undercoating will be provided, test reports shall be sent within 30 days of shipment, CPS standard leak testing procedures,
will not design to ambient temp of -32 C or top oil rise of -32 C
These exceptions are acceptable to Fort Collins as long as Irby continues to obtain and deliver to Fort Collins the electronic test reports immediately after shipment.
# Units 6 (Std Doc) BID TALLY
Size 150kVA Bid # 5648
Supplier $ / Each $ / Total Mfr / Mfr# Del/Wks
Guar No
Load Loss
NL Loss *
$3.90
Guar Full
Load Loss
NL Loss *
$2.30
Guar Total
Load Loss Impedance
Meet
Specs? Escalation
Western United $ 8,156.00 $ 48,936.00 Pauwels 8-10 wks 333 $ 1,298.70 832 $ 1,913.60 1165 2.11 Yes is not see note
Utility Products $ 4,430.00 $ 26,580.00 Cooper 8-10 wks 307 $ 1,197.30 971 $ 2,233.30 1278 2.8 No is not
Crescent $ 6,010.00 $ 36,060.00 GE 8 wks 106 $ 413.40 1033 $ 2,375.90 1139 No is not
WESCO $ 4,441.00 $ 26,646.00 ABB 8-10 wks 429 $ 1,673.10 820 $ 1,886.00 1249 2.1 Yes is not
Western United $ 4,759.00 $ 28,554.00 Howard 14-16 wks 299 $ 1,166.10 1170 $ 2,691.00 1469 2.2 Yes is not
Supplier
Western United
Utility Products
Crescent
WESCO
Western United
Based on the ranking of the evaluated bids, Howard (care of Western United) is the lowest evaluated bidder and should be awarded Bid 7646.
IEEE C57.12.00, Section 9.2 Tolerances for impedance
The tolerances for impedance shall be as follows:
a) The impedance of a two‐winding transformer with an impedance voltage greater than 2.5% shall have a tolerance of ±7.5% of the specified value, and those with an impedance voltage
of 2.5%
or less shall have a tolerance of ±10% of the specified value.
Differences of impedance between duplicate two‐winding transformers, when two or more units of a given rating are produced by one manufacturer at the same time, shall not exceed 7.5%
of the
specified value.
b) The impedance of a transformer having three or more windings, or having zigzag windings, shall have a tolerance of ±10% of the specified value.
Differences of impedance between duplicate three‐winding or zigzag transformers, when two or more units of a given rating are produced by one manufacturer at the same time, shall not
exceed
10% of the specified value.
c) The impedance of an autotransformer shall have a tolerance of ±10% of the specified value. Differences of impedance between duplicate autotransformers, when two or more units of a
given
rating are produced by one manufacturer at the same time, shall not exceed 10% of the specified value.
d) Transformers shall be considered suitable for operation in parallel when reactances come within the limitations of the preceding paragraphs, provided that turns ratios and other controlling
characteristics are suitable for such operation.