| Title |
A Study on Ratio Error and Phase Angle Error Caused by an External Burden in Voltage Transformer |
| Keywords |
Voltage transformer ; Ratio error ; Phase angle error ; Burden ; National standard |
| Abstract |
A voltage transformer(VT) used for the estabilishment of high voltage national standard, has generally ratio error and phase angle error. Both errors in VT depend critically on values of external burden of VT used. Both ratio ewer and phase angle error in existence of the external burden is calculated. These calculated values are very well consistent with the experimental result. The principle and the measurement method of VT in our institute are also explained. |