HomeMy WebLinkAboutCORRESPONDENCE - BID - 8662 167 KVA PAD-MOUNTED TRANSFORMER 120-1801 Phase Padmounted Transformer Bid Evaluation
# Units 10 Xfmr Type 1P Pad Bid #: 8662
Size 167 kVA Secondary V 240/120 Date: January 24, 2018
NL Loss Cost $ 3.90 Stock # T120180
FL Loss Cost $ 1.50
Specified
Impedance % 2.54 (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)
Central Moloney Central Moloney $ 3,152.00 8-10 weeks 247 1376 2.42 Yes is not 1623 Yes 111 0 -4.72% $ 6,179.30 $ 31,520.00 $ 963.30 $ 2,064.00 1 1
WESCO ABB Inc $ 3,633.00 14-16 236 1307 2.53 No IS NOT 1543 YES 0 0 -0.39% $ 6,513.90 $ 36,330.00 $ 920.40 $ 1,960.50 2 -
Western United Howard Industries $ 4,011.00 8-10wks ARO 276 1228 2.60 Yes No 1504 Yes 70 0 2.36% $ 6,929.40 $ 40,110.00 $ 1,076.40 $ 1,842.00 3 3
-100.00% $ - $ - $ - $ - #N/A
Notes:
1. Central Maloney appears to meet our dimensional requirements. They quoted losses that do not meet DOE efficiency requirements.
2. ABB in care of Wesco did not provide stray losses and therefore are considered an unresponsive bidder.
3. Howard Industries in care of Western United appears to meet our specification.
Based on the ranking of the evaluated bids, Central Maloney in care of Peterson Company shall be awarded bid 8662.
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.