The invention relates to an electromagnetic voltage transformer, which belongs to the technical field of transformers. The technical scheme includes that the electromagnetic voltage transformer comprises an expander 1 , transformer oil 2 , a body 3 , a porcelain bushing 4 and a base 5. The expander is arranged above the body filled with the transformer oil, the porcelain bushing is arranged outside the body and positioned above the base, and four independent secondary windings disposed in the body include a metering secondary winding, a measuring secondary winding, a protecting secondary winding and a residual voltage winding which are connected with a metering meter, a measuring meter, a protecting device and a residual voltage protecting device respectively.
The measuring meter and the protecting device are connected with two independent secondary windings respectively, the rated secondary load of the measuring winding is 50VA, and the rated secondary load of the protecting winding is VA, so that mutual influence between the measuring meter and the protecting device are diminished, and measuring precision is guaranteed.
How Transformers Work
An electromagnetic voltage transformer, characterized by comprising an expander 1 , transformer oil 2 , the body 3 , ceramic sleeve 4 , the base 5 , an expansion device is provided in the body side , the body equipped with transformer oil, porcelain jacket provided outside the body, disposed above the base porcelain, the body is provided in three separate secondary winding, the secondary winding of the metering respectively, measured with the secondary winding, protection a secondary winding, each secondary winding respectively connected to measuring instruments, measuring instruments, the protection device.
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Procedure and device for monitoring the secondary circuit of a measuring transformer in a supply system. Circuit for checking on-site accuracy of current transformer under condition of underload operations. CNU en. Intelligent electricity meter with diamagnetic structured electromagnetic current transformers.
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