FIBER-OPTIC CURRENT TRANSFORMER
FIELD: electric measurements. ^ SUBSTANCE: fiber-optic current transformer can be used in electrical power engineering, high voltage measuring technique, relay protection and automatics. Fiber-optic current transformer has current-leading circuit embraced by magneto-optic sensitive element in form o...
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Format: | Patent |
Sprache: | eng ; rus |
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Zusammenfassung: | FIELD: electric measurements. ^ SUBSTANCE: fiber-optic current transformer can be used in electrical power engineering, high voltage measuring technique, relay protection and automatics. Fiber-optic current transformer has current-leading circuit embraced by magneto-optic sensitive element in form of coil made of optical fiber; aid for introduction of polarized light signal in fiber and aid for dividing polarized light to mutually orthogonal linear polarized components and unit for transforming components to intensity-standardized electrical signals as well as measuring signal forming unit. The latter is used for determining measured value. All the members are optically connected with sensitive member. Members of fiber-optic current transformer are disposed onto reference isolator covered with protecting coating; isolator is provided with high-voltage fitting and zero potential flange. ^ EFFECT: improved reliability and stability under conditions of long exploitation at all kinds of electrical voltage, mechanical loads and different environmental factors. ^ 4 dwg |
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