TF 06-18-701 - NF91-Transformer Replacement

OBJECTIVE
This request for Request for Supplier Prequalification is to solicit information from interested Manufacturers seeking to provide  two (2) power transformer 115/13.8 kV  in the following areas:
-     For NF91 Transformer Replacement

This Supplier Prequalification is to develop a shortlist of Suppliers who have demonstrated experience and capability for the supply of Two (2) 115/13.8 kV, 48MVA transformers to be owned by McMaster University.
The McMaster customer owned substation was originally constructed in 1970. Incoming power is provided by two Hydro One incoming service lines at 115,000V. The McMaster substation delivers 13.8 kV electricity from dual power transformers to the main electrical switchgear in the ET Clarke building for distribution to the 50+ buildings on campus including McMaster University Medical Centre hospital.
 
The existing substation power transformers are targeted for replacement at end of life. For reference, the existing power transformers are rated as follows:
 
Manufacturer:                      Westinghouse
Year of construction:           1969
Power:                                  30/40/48 MVA ONAN/ONAF/ONAF
Voltage operation:              115/13.8 kV
BIL:                                        550/110 kV
Impedance:                          11.8% ONAN
Tap changer on Primary:     Yes,  ULTC 12 taps at 2.5%
Tap changer on secondary: No
Tertiary:                                No
Aux. transformer:                Yes, 5 kVa, 8000/120V