Zero-flux dc current transformer: a high precision bipolar wide-band measuring device

Conference · Wed Jun 01 00:00:00 EDT 1977 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:7087238

Appelo, H C ^[1]; Groenenboom, M; Lisser, J

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1. CERN, Geneva

A current-carrying conductor is surrounded by a pair of ring cores. A sense winding on one core provides flux rate feedback to a power amplifier which drives the ampere-turn compensating current through a common compensating winding. The other core serves as a second-harmonic modulator to establish zero-flux operation and thus to ensure a perfect, temperature-independent current balance. A specially-developed burden resistor converts the compensating current into a voltage signal, which is amplified to give a 10 V output signal at the nominal value of the current to be measured. A substantial number of devices, ranging from 50 to 25000 amperes, are now operational in the beam transfer and extraction power supplies for the CERN SPS.

• OSTI ID: 7087238
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Vol. NS-24:3; Conference: Particle accelerator conference, Chicago, IL, USA, 16 Mar 1977
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CERN SPS SYNCHROTRON
ELECTRONIC EQUIPMENT
ELECTRIC CURRENTS
MAGNET COILS
OPERATION
STABILITY
TRANSFORMERS
ACCELERATORS
CURRENTS
CYCLIC ACCELERATORS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
SYNCHROTRONS
430300* - Particle Accelerators- Auxiliaries & Components