HomeMy WebLinkAboutCORRESPONDENCE - BID - 8678 300 KVA PAD-MOUNTED TRANSFORMER 300-0313 Phase Padmounted Transformer Bid Evaluation
# Units 6 Xfmr Type 3P Pad Bid #: 8678
Size 300 kVA Secondary V 480/277 Date: February 13, 2018
NL Loss Cost $ 3.90 Stock # T300031
FL Loss Cost $ 2.30
Specified Impedance % 2.50 (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
(is / is not)
a factor
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)
Border States Howard Industries $ 9,311.11 6-8wks ARO 682 1749 2.70 Yes is not 2431 Yes 39 0 8.00% $ 15,993.61 $ 55,866.66 $ 2,659.80 $ 4,022.70 5 4
Peterson Company Central Moloney $ 9,160.00 10-12 wks 616 1732 2.58 Yes w/ Exception is 2348 Yes 229 0 3.20% $ 15,546.00 $ 54,960.00 $ 2,402.40 $ 3,983.60 4 2
Western United WEG Transformers $ 8,252.00 6-8 WEEKS 635 1885 2.50 Yes is 2520 No 858.21 0 0.00% $ 15,064.00 $ 49,512.00 $ 2,476.50 $ 4,335.50 1 1
Western United ERMCO $ 8,510.00 8-10 weeks. 663 1562 2.50 No is not 2225 Yes 152 0 0.00% $ 14,688.30 $ 51,060.00 $ 2,585.70 $ 3,592.60 2 -
Western United Howard Industries $ 9,062.00 6-8wks ARO 682 1749 2.70 Yes is 2431 Yes 39 0 8.00% $ 15,744.50 $ 54,372.00 $ 2,659.80 $ 4,022.70 3 3
IRBY COOPER $ 9,726.00 8 WEEKS 625 1807 2.50 Yes is not 2432 Yes 94.2 0 0.00% $ 16,319.60 $ 58,356.00 $ 2,437.50 $ 4,156.10 6 5
WESCO DIST ABB Inc. $ 10,777.20 12-16 Weeks 556 2414 2.50 Yes w/ Exception is not 2970 Yes 77 0 0.00% $ 18,497.80 $ 64,663.20 $ 2,168.40 $ 5,552.20 7 6
Technology International, INC CES 0 - - -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
Based on the evaluated bids, WEG in care of Western United should be awarded bid 8678
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.