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Data Dictionary

Title Type Label Description Example
Area text Area

WPD License area

 SWALES
GSP Group text GSP Group

The name and identifier of the GSP group the transformer is contained within

 Cardiff East & Aberthaw 132 kV
S/S or Busbar Name Node 1 text S/S or Busbar Name Node 1

Unique identifier of the HV connection point

 CARS1
S/S or Busbar Name Node 1 Voltage numeric S/S or Busbar Name Node 1 Voltage

HV connection point voltage

 132
S/S or Busbar Name Node 2 text S/S or Busbar Name Node 2

Unique identifier of the LV connection point

 CARS5
S/S or Busbar Name Node 2 Voltage numeric S/S or Busbar Name Node 2 Voltage

LV connection point voltage

 11
Transformer ID numeric Transformer ID

Transformer Name

 681123
Vector Group text Vector Group

Vector group designation

 YNd
Positive Sequence Resistance R numeric Positive Sequence Resistance R

Positive phase sequence resistance

 1.9
Positive Sequence Reactance X numeric Positive Sequence Reactance X

Positive phase sequence reactance

 69.9
Zero Sequence Reactance X numeric Zero Sequence Reactance X

Positive phase sequence susceptance

 65.2
Tap Min numeric Tap Min

Minimum tap posistion

 -20
Tap Max numeric Tap Max

Highest tap position

 10
Tap Step text Tap Step

% increment of tap steps

 1
Normal Rating numeric Normal Rating

Normal rating of transformer

 20
Method of Earthing text Method of Earthing

Method of earthing used with the Transformer

 Earth Tx