NRC-PTB intercomparison of voltage transformer calibration systems for high voltage at 60 Hz, 50 Hz, and 16.66 Hz

Author

So, Eddy ; Latzel, Hans-Georg

Author_Institution

Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada

Volume

50

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

419

Lastpage

421

Abstract

An intercomparison of voltage transformer (VT) calibration systems was performed at the PTB high-voltage laboratory. A “portable” current-comparator-based VT calibration system of the NRC was compared with the PTB voltage-divider-based system, using a reference multiratio inductive VT as a transfer standard with voltage ratios of (110/2 kV)/(100/2 V) up to (400/√3 kV)/(100/√3 V) at frequencies of 16.66 Hz, 50 Hz, and 60 Hz. At frequencies of 50 Hz and 60 Hz with a resistive burden of 10 kΩ and test voltages of 20% up to 120% of rated voltage, the test results of the two different methods at all ratios were found to differ by no more than 15 parts in 10⁶ for the voltage ratio and 30 μrad for the phase displacement. For the ratio (110/2 kV)/(100/2 V) at 16.66 Hz, the results agreed within 15 parts in 10⁶ for the voltage ratio and 50 μrad for the phase displacement

Keywords

calibration; current comparators; high-voltage techniques; potential transformers; transfer standards; voltage dividers; voltage measurement; 16.66 Hz; 50 Hz; 60 Hz; NRC-PTB intercomparison; high voltage; phase displacement; portable current-comparator-based system; reference multiratio inductive transformer; resistive burden; transfer standard; voltage transformer calibration systems; voltage-divider-based system; Calibration; Capacitors; Councils; Frequency; High-voltage techniques; Instrument transformers; Laboratories; Measurement standards; System testing; Voltage transformers;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.918156

Filename

918156