JPS62190327U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 5 are diagrams showing an embodiment of the zero-phase current transformer primary winding structure of the earth leakage breaker according to this invention, where Figure 1 is a plan view, Figure 2 is a side view, and Figure 3 is a side view. 4 is a perspective view of the main parts, FIG. 5 is a rear view of FIG. 2 viewed from the direction of the arrow, and FIGS. 6 and 7 are the primary winding structure of a zero-phase current transformer of a conventional earth leakage breaker. FIG. 6 is a perspective view, and FIG. 7 is an enlarged perspective view of essential parts. 13...Printed wiring board, 14, 15...Primary winding, 16a, 16b...Lead wire pin, 17...
...Annular iron core, 20...Primary winding member, 21, 22
...Connection conductor, 23a, 23b; 24a, 24b
... Electric circuit conductor, 25 ... Conductor piece, 25a ... Connection pin, 26 ... Insulator.

Claims (1)

[Scope of utility model registration request] An annular iron core formed of synthetic resin around which a secondary winding is wound and whose lead-out end face of the lead wire pin serves as a mounting surface;
The iron core is attached to a primary winding member for each electric circuit, in which a plurality of U-shaped conductor pieces having connecting pins at both ends are mutually insulated and integrated and straddle the annular iron core toward the mounting surface. A zero-phase current transformer primary winding structure for an earth leakage breaker, characterized in that the primary winding structure comprises a series connection between respective connection pins of the primary winding member, and a wiring board on which a conductor pattern of the electric path is printed. .