SU375564A1 - DEVICE FOR MEASUREMENT OF CURRENT CURRENT - Google Patents

Description

one

The invention relates to the field of transformer devices for measuring direct current current.

A transformer device for measuring direct current is known, comprising a direct current transformer, one or more intermediate current transformers, and a supply transformer. The supply transformer is a source of sinusoidal voltage, and the intermediate current transformer is used to separate the secondary circuits, as well as to obtain the desired transformation ratio in cases where the secondary windings of the direct current transformer must be performed with a reduced number of turns.

The supply transformer, as well as one or more intermediate current transformers each have their own magnetic circuit and their primary and secondary windings deposited on this magnetic circuit.

Such devices are quite complex.

In the proposed device, the primary winding of the intermediate current transformers and the secondary winding of the supply transformer are made in the form of one common winding enclosing the magnetic cores of the intermediate current transformers with their secondary windings and the magnet of the supply transformer with its primary winding. This simplifies the device. Performing the primary winding of the intermediate current transformers and the secondary winding of the supply transformer in the form of one winding allows the supply and intermediate current transformers to be implemented as a single structural element, thus reducing the number of individual structural elements of the device from three to two. Replacing two windings with one makes it possible to reduce the consumption of a winding material, to reduce the active and inductive resistances in the DC transformer circuit.

In addition, to simplify the technology and reduce the size, the primary winding of the supply transformer with its magnetic core and the secondary windings of intermediate transformers with their magnetic cores are equipped with a common insulation, above which the common winding is located.

The common winding is provided with insulation, which is common with respect to the secondary windings of intermediate current transformers with their magnetic cores and the primary winding of the supply transformer with its magnetic core.

FIG. 1 shows a diagram of a transformer device for measuring direct current.

Transformer device contains a transformer | Mator / DC power supply

transformer and intermediate current transformer.

The intermediate current transformer with magnetic core 2 and secondary winding 3 and the supply transformer with magnetic core 4 and primary winding 5 have a common winding 6, which serves as the primary winding for the intermediate current transformer and the secondary winding for the supply current transformer. The common winding 6 of the supply transformer and the intermediate current transformer is connected to the terminals 7 of the secondary winding of the transformer of direct current. To the secondary winding of the intermediate current transformer connect the load 8, the primary winding 5 of the supply transformer is included in the network.

FIG. 2 shows an embodiment of a supply transformer and intermediate current transformers having a common winding.

The magnetic core 4 of the supply transformer with its primary winding 5 and the magnetic cores 2 of intermediate current transformers with their secondary windings 3 are wrapped around the common winding 6, which serves as the primary winding of intermediate current transformers and the secondary winding of the supply transformer.

FIG. 3 shows one of the embodiments for isolating intermediate current transformers and a supply transformer.

Magnetic cores 2 intermediate current transformers with their secondary windings 3 and Magnetic core 4 of the supply transformer with its primary winding 5 are insulated

common insulation 9, on top of which is wound a common winding 6.

Subject invention

Claims (3)

1. A device for measuring direct current, containing a transformer of direct current, one or more intermediate current transformers and a power transformer, the primary winding of the power transformer and the secondary winding of intermediate current transformers located on individual magnetic cores, characterized in that, in order to simplify the device , the primary winding of the intermediate current transformers and the secondary winding of the supply transformer are made in the form of one common winding encircling the tape recorder botflies intermediate current transformers with their secondary windings and magnetic circuit of the supply transformer with its primary winding. 2. The device according to claim 1, characterized in that, in order to simplify the technology and reduce the size, the primary winding of the supply transformer with its magnetic core and the secondary windings of intermediate transformers with their magnetic cores are provided with a common insulation over which the common winding is located. 3. The device according to claim 1, characterized in that the common winding is provided with insulation that is common with respect to the secondary windings of intermediate current transformers with their magnetic cores and the primary winding of the supply transformer with its magnetic core. FIG.