LPT Bundle (Large Power Transformers)

Description

The request for proposals covers the calculation, design, construction, manufacture, testing, transportation, installation, commissioning, documentation, and warranty for several large power transformers (LPT), divided into a total of 4 lots as follows.

Lot 1:
3 x Longitudinal & Quadrature regulated Transformer (LQT) 400 MVA, 380/220 kV
LQT Soazza 1: 4 phases (1 transformer bank + 1 reserve group)
LQT Soazza 2: 3 phases (1 transformer bank)
LQT Tavanasa 1: 4 phases (1 transformer bank + 1 reserve group)

The three transformer groups (phases) of a transformer bank each consist of an LRT and QRT in separate tanks.

Lot 2:
4 x Longitudinal & Quadrature regulated Transformer (LQT) 800 MVA, 380/220 kV
LQT Breite 1: 4 phases (1 transformer bank + 1 reserve group)
LQT Breite 2: 3 phases (1 transformer bank)
LQT Gösgen 1: 4 phases (1 transformer bank + 1 reserve group)
LQT Gösgen 2: 3 phases (1 transformer bank)

Lot 3:
2 x Phase Shifting Transformer (PST) 500 MVA, 220/220 kV
PST Riddes 3: (2 tanks, 3-pole)
PST St. Triphon 1: (2 tanks, 3-pole)

PST with two cores, excitation and series transformers in separate tanks

Lot 4:
1 x Longitudinal & Quadrature regulated Transformer (LQT) 400 MVA, 380/220 kV
LQT Bickigen 1: (2 tanks, 3-pole)

LRT and QRT in separate tanks

For information on the earliest possible delivery dates for the individual LPTs, please refer to document 01_Verfahrensanweisung, Chapter 6.8.5, Mandatory Criterion LPT-MK5 – Latest Possible Dates for “IBS Completed,” and Chapter 6.9.6, Evaluation of the Award Criterion LPT-ZK4 – Date “IBS Completed,” in the bidding documents.

Legend:
LRT → Longitudinal regulated transformer
QRT → Quadrature regulated transformer
3 phases → Transformer bank
1 phase → Transformer group (LRT+QRT)
LRT / QRT → Transformer
Reserve group → Reserve phase