LPT Bundle (Large Power Transformers)

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