HomeMy WebLinkAboutBid Tally -8853 TRANSFORMERS 50 KVA PAD-MOUNTED1 Phase Padmounted Transformer Bid Evaluation
# Units 30 Xfmr Type 1P Pad Bid #: 8853
Size 50 kVA Secondary V 120/240 Date: February 12, 2019
NL Loss Cost $ 3.90 Stock # T120150
FL Loss Cost $ 1.50
Specified
Impedance % 1.97 (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 $ 2,328.87 6-8 wks ARO 101 526 1.90 Yes w/ Exception is not 627 Yes 13 0 -3.31% $ 3,511.77 $ 69,866.10 $ 393.90 $ 789.00 3 3
Peterson Central Moloney $ 2,073.00 8-10 weeks 87 595 2.05 Yes is 682 Yes 22 0 4.33% $ 3,304.80 $ 62,190.00 $ 339.30 $ 892.50 1 1
WESCO ABB $ 2,439.00 6-8 WEEKS 97 517 1.69 Yes is not 614 Yes 7 0 -13.99% $ 3,592.80 $ 73,170.00 $ 378.30 $ 775.50 4 4
Western United Howard Industries $ 2,282.00 6-8 wks ARO 101 526 1.90 Yes w/ Exception is not 627 Yes 13 0 -3.31% $ 3,464.90 $ 68,460.00 $ 393.90 $ 789.00 2 2
0 -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
0 -100.00% $ - $ - $ - $ - - -
Notes:
Based on the evaluated bids, Central Moloney in care of Peterson shall be awarded bid 8853.
1 Howard (Border States) meets spec with exception.
2 Central Moloney (Peterson) meets spec.
3 ABB (WESCO) meets spec.
4 Howard (Western United) meets spec with exception.
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.