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New concept of PTBs standard divider for direct voltages of up to 100 kV

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1 Author(s)
Marx, R. ; Phys. Tech. Bundesanstalt, Braunschweig, Germany

A shielded high-voltage divider equipped with a temperature control system has been developed for the precise measurement of direct voltages of up to 100 kV. The measuring divider consists of 101 wire-wound resistors with a total resistance of about 1 GΩ and has been set up in a metal vessel under compressed sulphur hexafluoride (SF 6). The measuring divider is mounted in an electrode arrangement that provides a homogeneous electrical field; temperature control is ensured by Peltier elements. The nominal scale factors are 100:1 and 10000:1. The experimental investigation of all resistors and influence quantities as well as the shielded construction and the temperature control system have allowed a relative uncertainty of 2×10-6 (k=2) to be achieved

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:50 ,  Issue: 2 )