HomeMy WebLinkAboutCORRESPONDENCE - BID - 8676 150 KVA PAD-MOUNTED TRANSFORMER 300-0153 Phase Padmounted Transformer Bid Evaluation
# Units 15 Xfmr Type 3P Pad Bid #: 8676
Size 150 kVA Secondary V 208/120 Date: February 7, 2018
NL Loss Cost $ 3.90 Stock # T300015
FL Loss Cost $ 2.30
Specified
Impedance % 2.10 (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 $ 7,087.83 6-8wks ARO 325 1332 2.30 Yes is not 1657 Yes 22.5 0 9.52% $ 11,418.93 $ 106,317.45 $ 1,267.50 $ 3,063.60 3 3
Peterson Company Central Moloney $ 7,526.00 10-12 wks 339 1128 1.92 Yes w/ Exception is 1467 Yes 130 0 -8.57% $ 11,442.50 $ 112,890.00 $ 1,322.10 $ 2,594.40 4 4
Western United Howard Industries $ 6,898.00 6-8wks ARO 325 1332 2.30 Yes is not 1657 Yes 22.5 0 9.52% $ 11,229.10 $ 103,470.00 $ 1,267.50 $ 3,063.60 2 2
Western United ERMCO $ 7,556.00 8-10 weeks 353 903 2.10 No is 1256 Yes 121 0 0.00% $ 11,009.60 $ 113,340.00 $ 1,376.70 $ 2,076.90 5 -
Western United WEG $ 6,625.00 6-8 WEEKS 346 1164 2.10 Yes is 1510 Yes 269.54 0 0.00% $ 10,651.60 $ 99,375.00 $ 1,349.40 $ 2,677.20 1 1
WESCO DIST ABB Inc. $ 9,202.07 12-16 Weeks 391 832 2.10 Yes w/ Exception is not 1223 Yes 70 0 0.00% $ 12,640.57 $ 138,031.05 $ 1,524.90 $ 1,913.60 6 5
0 -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
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.