How to understand the Rating of this transformer

  • #1
Hello
How to know the rating of this transformer
 

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  • #3
Hello
How the Winding is done in it what is the method
 
  • #4
658
327
Hello
How the Winding is done in it what is the method
Delta primary, Wye secondary - It’s all there on the plate...
 
  • #5
44
35
Hello
How to know the rating of this transformer

The Maximum continuous AC Power rating: 7.5kVA
Primary Voltage: 460VAC
Secondary Voltage: 230 L-L; 133 L-N
Can be tapped to provide either: 105.0%, 100.0%, or 95.0% of primary nominal voltage.
Winding Structure: Delta/G-Wye
Percent Impedance at 170 C (normal operating temperature): 3.3%
Insulation class: 220 (220 C will be the maximum winding temperature when in service. Hotter than that and something is wrong.)
Cooling Method: AA (Ambient Air)
Most likely usage: Isolation for an electric motor (hence the strange primary voltage and delta primary winding.)
 
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