Table erigrid.public.transformer Generated by
SchemaSpy
Legend: SourceForge.net
Primary key columns
Columns with indexes
Implied relationships
Excluded column relationships
< n > number of related tables
 
Column Type Size Nulls Auto Default Children Parents Comments
comp_id int4 10
component.comp_id transformer_comp_id_fkey C
rated_u1 float4 8,8  √  null Primary side nominal voltage (V)
rated_u2 float4 8,8  √  null Secondary side nominal voltage (V)
rated_s float4 8,8  √  null Nominal apparent power (VA)
x_k float4 8,8  √  null Leakage reactance (percentage)
r_k float4 8,8  √  null Winding resistance (percentage)
tap_changer bool 1  √  null Is there a tap changer in the transformer?
step_size float4 8,8  √  null Tap changer step size (pu)
tap_nmbr_down int2 5  √  null Number of tap steps downwards (decreasing secondary side voltage)
tap_nmbr_up int2 5  √  null Number of tap steps upwards (increasing secondary side voltage)

Analyzed at Thu Apr 27 16:49 EEST 2017

Indexes:
Column(s) Type Sort Constraint Name
comp_id Primary key Asc transformer_pkey

Close relationships  within of separation: