03 / GRID EQUIPMENT

Grid equipment: transformers and switchgear

Critical-path equipment for substations, grid connections and power-generation programmes.

Generator step-up (GSU) transformers

Raise generator voltage (e.g. 11 kV) to grid voltage (e.g. 132 kV).

WHAT WE NEED: MVA, voltages, frequency, vector group, impedance, cooling class, standard (IEC or IEEE).

Substation transformers, typically 20–500+ MVA.

WHAT WE NEED: MVA, voltages, frequency, vector group and cooling class.

MV to LV (e.g. 11 kV to 415 V), oil or dry-type.

WHAT WE NEED: Voltage, MVA, enclosure, insulation and installation environment.

Air-insulated or gas-insulated equipment.

WHAT WE NEED: Voltage, short-circuit rating, protection scheme and standard.

High-voltage breakers and GIS for substations and grid connection.

WHAT WE NEED: Voltage, interrupting rating, bay layout and site conditions.