WELCOME|COMPANY|SOLUTIONS|APPLICATIONS|HOW TO SELECT AN INSTRUMENT TRANSFORMER|CONTACT US!|Site Map
HOW TO SELECT AN INSTRUMENT TRANSFORMER > Selecting a Voltage Transformer 
   

Accuracy of Voltage Transformers

 Accuracy of Voltage Transformers | Important Warning for VT's


  As per IEC 60044-2 "Instrument transformers - Inductive voltage transformers"

Ratio errors and phase displacement of metering classes
Accuracy classRatio error from 0,8Un to 1,2UnPhase displ. from 0,8Un to 1,2Un
0,10,1%5'
0,20,2%10'
0,50,5%20'
11%40'
33%-


Ratio errors and phase displacement of protection classes
Accuracy classRatio error
from 0,05Un to voltage factor x Un		Phase displ. 
from 0,05Un to voltage factor x Un
3P3%120'
6P6%240'
© RS ISOLSEC - Instrument transformers
WELCOME - COMPANY - SOLUTIONS - APPLICATIONS - HOW TO SELECT AN INSTRUMENT TRANSFORMER - CONTACT US! - Site Map
Legal information