JPS6413717U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of an embodiment of the error adjustment device of the present invention, Figure 2 is a schematic configuration diagram of a reactor member with a secondary coil used in the present invention, and Figure 3A.
is an equivalent circuit diagram of a conventional error adjustment device, FIG. 3B is an equivalent circuit diagram of the embodiment of FIG. 1, FIG. 4 is a schematic circuit diagram of a potential transformer equipped with an error adjustment device, and FIG. FIG. 6 is a circuit diagram of a conventional error adjustment device, FIG. 6 is a schematic diagram of a conventional reactor, and FIG. 7 is a schematic diagram of a conventional adjustment transformer. 1... Instrument transformer, 1b... Transformer secondary coil, 2... Adjustment coil, 3, 30... Error adjustment device, 4... Resistor, 5... Reactor, 5a...
Iron core, 6...Adjusting transformer, 6a...Primary coil, 6b...Secondary coil, 7...Reactor member with secondary coil, 16...Ideal transformer.

Claims (1)

[Claims for Utility Model Registration] (1) A series circuit consisting of a reactor and a resistor wound around an iron core connected to an adjustment coil provided on the secondary side of an instrument transformer, and a series circuit in which the primary coil is An error adjustment device for a voltage transformer comprising: an adjustment transformer connected in parallel to a reactor and having a secondary coil connected in series to a transformer secondary coil of the voltage transformer; An error adjustment device for an instrument transformer, characterized in that the secondary coil of the adjustment transformer is wound around the iron core of the reactor, and the secondary coil of the adjustment transformer is also used as the primary coil of the adjustment transformer. (2) The error adjustment device for a voltage transformer according to claim 1, wherein the iron core is a gapped iron core.