Exhibit 3.jpeg

JPEG file 3 MB Posted

Attached to
Sources Sought - Transformer Refurbishment for WAPA Tracy Substation (Byron, CA)
Solicitation number
26WA161070-SS
Issued by

About this file

This image contains the technical specification nameplate and schematic diagram for a Hyundai Auto Transformer, Model RP-8451, manufactured by Hyundai Heavy Industries Co., Ltd. in Ulsan, Korea.

The transformer is a single-phase unit with a rated frequency of 60 Hz, rated power of 170/228.67/283.33 MVA depending on winding configuration, and rated voltage of 525/3 kV on the high voltage side and 230000/3 V on the low voltage side. The unit utilizes GAI/AFOA type cooling, ASTM D3487 insulating liquid, and copper conductor material. Key operational specifications include a temperature rise of 55/55°C, sound level of 75 dB, and tank design for 100-percent vacuum filling. The transformer was manufactured in 2001 and weighs approximately 505,400 lbs total, with detailed component weights documented including untanking (262,600 lbs), tank and fittings (126,900 lbs), insulating oil (129,100 lbs), and transportation (341,580 lbs). The unit includes reactor and ZnO element components with subtractive polarity configuration. Multiple tap settings are available on the high voltage side (ranging from 551250/3 to 498750/3 volts), low voltage side (230000/3 volts), and tertiary voltage side (36225.0 to 32775.0 volts) with corresponding amperage ratings for different current transformer classes. The nameplate indicates the transformer has 30-minute over-load capacity of 366667 kVA for HV and LV windings and 467000 kVA for TV winding, with 30-cycle and 3-minute over-voltage capacities of 615 kV and 575 kV respectively.

Other files

File Type Posted
Exhibit 6.jpeg JPEG file
Exhibit 7 toa_fluid_report_N132051_XFMR TCY KT2A-A.pdf PDF
Exhibit 10.jpeg JPEG file
Exhibit 5.jpeg JPEG file
Exhibit 12.jpeg JPEG file
Exhibit 8toa_fluid_report_N132052_XFMR TCY KT2A-B.pdf PDF
PWS-TCY-KT2A_TransformerRefurbishment-2026-03-23_Redacted.pdf PDF
Exhibit 11.jpeg JPEG file
Exhibit 4.jpeg JPEG file
Exhibit 13.jpeg JPEG file
Exhibit 9 toa_fluid_report_N132053_XFMR TCY KT2A-C.pdf PDF
Show all 11

On GovTribe

Work with this file

  • Download the original file
  • Contacts named in this file
  • Similar government files
  • Ask GovTribe AI about this file

File details come from the government source that posted it. Updated .