Transformer current sensor for superconducting magnetic coils

Patent · Tue Apr 16 04:00:00 EST 1985

OSTI ID:5512802

Shen, S S; Wilson, C T

The present invention is a current transformer for operating currents larger than 2kA (two kiloamps) that is capable of detecting a millivolt level resistive voltage in the presence of a large inductive voltage. Specifically, the present invention includes substantially cylindrical primary turns arranged to carry a primary current and substantially cylindrical secondary turns arranged coaxially with and only partially within the primary turns, the secondary turns including an active winding and a dummy winding, the active and dummy windings being coaxial, longitudinally separated and arranged to mutually cancel voltages excited by commonly experienced magnetic fields, the active winding but not the dummy winding being arranged within the primary turns.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• Assignee: Dept. of Energy
• Patent Number(s): None
• Application Number: ON: DE86013804
• OSTI ID: 5512802
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700202 -- Fusion Power Plant Technology-- Magnet Coils & Fields
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
MONITORING
QUENCHING
SAFETY
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TRANSFORMERS