How do I find the K-frame of a transformer

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rlcemente

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How do I find the K-frame of a transformer???
Doe the impedence effect the "K-Frame" of a transformer?
To what does the "K-Frame" rating refer?

Please use the information listed below to help me understand how to find or calculate the "K-Frame" rating of this transformer.


Transformer 1

Cutler-Hammer
NEMA Class AA Dry Type Transformer

Serial Number*******24-36114L06
KVA**************1000
HV***************12470
KV BIL************95HV / 10LV
LV***************208Y / 120
LV AMP***********2776
Class ************AA
Type*** *********VPI
Phase************3
IMP*************6.76
HZ**************60
Temp Rise********150 C
Conductor********AL / AL
Specs #**********LAPV-47141
Total Weight*******7400 lbs
Inst. Book*********IBXFI-00
Manf. Date********10/15/96
Manf. Location Bland, VA
Plate Number*******Dy01A3AW
 
I believe you are looking for information on the K-Rating of a transformer.

Unless specifically listed on the nameplate all transformers are rated K-1. Very few transformers with primaries above 600V are built with ratings above K-1.
 
transformers are K-rated which means that their insuation can handle the additional heating caused by non-linear loads.

if you believe that the non-linear loads in your facility is not significant, an ordinary transformer will do just fine.
 
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