JPS5894737A - Leakage breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an earth leakage pulley equipped with a zero-phase current transformer.

A zero-phase current transformer is a ring-shaped device with multiple main circuit lead wires inserted through it, and when the current flowing through the main circuit lead wires is unbalanced, it detects this and uses an electromagnet to trip the switching mechanism. However, since the main circuit lead wires are usually made of bare wires called braided wires, multiple main circuit lead wires are required in the high-phase current transformer. When the main circuit lead wires are inserted, insulation must be provided between each main circuit lead wire, and for this reason, conventionally, all but one main circuit lead wire is coated with an insulating chip. was giving. However, if the insulating tube is covered with insulating metal, the insulating process requires time and effort, and the main circuit lead wire covered with the insulating tube is difficult to wire. have.

The present invention has been developed in view of these points, and its purpose is to eliminate the need for separate W3 magnetic treatment in the zero-phase current transformer volatilization section of the main circuit lead wire, and to The purpose is to provide the ability to eliminate electrical leakage by simplifying the wiring process.

The present invention will be described below in detail based on illustrated embodiments.
is a vessel body, and both are made of synthetic wood.
1 and a chisel 131, and a utensil stand (eye input terminal 161 and output terminal 16 on the upper and lower ends of 21) is provided.

The fixed contact 101 K, which is connected to the input terminal (6), and the contact 113), which is connected to the input terminal (6), are connected to the base 121 with one end fixed to the bimetal 071 and plate 0.
4) is provided at the free end of the main circuit lead wire iJIf, which is also connected to the main circuit lead wire iJIf wire output terminal 16), which is formed of a metal braided wire. Person, power terminal (51, fixed contact (1o1, movable contact g3+, contact plate (141, r
<Imetal Q7+, main circuit lead wire 12o), and output terminal 161F (which is configured with an electric circuit).

If this is taken as a negative pole, the two poles are arranged in parallel in the illustrated example.
a is falling. Bend this device stand (21 input terminal (5) and output terminal 161 between the t part K [magnet device (opening/closing mechanism part 1 in the center, zero phase current transformer 8i 8 example and amplifier in the lower part) (The word detection block 12al is arranged.

As shown in FIGS. 3, 5, and 7, the opening/closing mechanism IZ31 has a tilting handle f7 supported by a support shaft (C).
! 71. A spring (29) for returning the handle t271, a swinging plate 1401, a moving frame n3), a tripping plate part, a ]-shaped link η that connects the hash doll and the swinging plate 14o),
Tripping rebellion (state's restoration i's own gene■η, and one pivot?□□□ and two tripping plates 145
A link Gη inserted through a frame body (swiveled, rocker 40) that supports a shaft 1461 that is inserted through the lower end j of 1 and makes the tripping member 14 rotatable is connected to the frame body (301 It can be slid freely through the long groove provided in the
An electromagnetic device (221 is a fixed iron core β3 arranged in York town and a coil frame, and a fixed iron core β3 arranged in the coil frame f121) is provided with a receiver #9f49) that can be freely locked at one end of 4o+ on the tripping plate 149. And return to the movable iron core town (I111
51. An actuating plate (50) whose one end is fixed to the movable iron core through the fixed iron core (example) and whose other end faces the tripping plate distortion.
When the 'st flow flows through the coil group of coil frame (52), it is attracted and driven toward the movable iron core or the fixed iron core 1531 side against the O1 return spring ■, and the actuating plate -j moves. It is something.

A zero-phase current transformer 1241 into which a detection pin (261 is a multi-pole main circuit lead wire consisting of a ring-shaped iron core bell 1) and a coil wire wound around it, and a main circuit lead are inserted. When the current flowing through the line 120) becomes unbalanced, that is, when a leakage current flows, it occurs at the coil position of the zero-phase 5i' current filter threshold, and the current flows outside the amplifier that amplifies the secondary output, and between the zero-phase gifk amplifier and the amplifier ( It consists of a detector box housing 25, and is also equipped with a test current limiting resistor and a movable contact plate.The test button (9) is attached to the movable contact &T6119ii lid (3). It is driven by the resistor and comes into contact with the lead wire at one end of the resistor.As shown in Figures 8 and 9, there is a cylinder housing only the zero-phase current transformer. ,
The cylindrical body 19) made of synthetic resin is composed of a cylindrical space and a box body for housing the amplifier μs.The cylindrical body 19) made of synthetic resin is formed as a shaped part with only one end open, and is formed between the outer cylinder ff01 and the inner cylinder 1). The space inside the inner cylinder (24I) is partitioned into a plurality of small spaces parallel to the axial direction by partition plates made of insulating material. In the illustrated example, since it is a type 2II, the partition plate formed integrally with the cylinder body (59) is flat and has two small spaces I@.
has an auxiliary partition plate that is continuous with the partition plate of the cylindrical body SSM when the cylindrical body is fitted into the cylindrical body. In the separated state 4, each bare wire is individually inserted into each small space.

Therefore, when the handle l) is raised upward, the swing plate, whose one end is locked to the receiving stage, presses the movable frame 143 at the other end via the link @η that slides in the long groove. As shown in FIG. 8, the movable frame (c) presses the contact plate α4) at both poles to bring the movable contact Oa+ into contact with the fixed contact (101) as shown in FIG. This state is maintained depending on the positional relationship between μs and both ends of the link η.

If a leakage occurs in the closed state, the zero-phase current transformer (2) detects the fault current 111Ilc and the secondary output, which is amplified by the amplifier, flows to the coil of the electromagnetic device 1.
The actuating plate hits and pushes the free end of the tripping plate distortion.

As a result, one end of the rocking plate i44 comes off from the catch of the tripping plate tea, and the movable frame is surrounded by the rocking plate - as shown in FIG.
The e-point plate (14) returns with its own restoring force, and the open contact f131 separates from the fixed contact (ω) and opens. When an overcurrent flows in the closed state, the curvature due to self-heating of S<Imetal aη moves the tripping plate i4υ, and the contact is similarly opened.

As described above, in accordance with the present invention, when inserting the main circuit lead wire into the zero-phase current transformer, it is not necessary to cover the main circuit lead wire with an insulating wire.

Each main circuit lead wire is separated and insulated by a partition plate made of insulating material provided in the detector box that houses the zero-phase current transformer, and both ends are welded to terminals, bimetal, or contact plates. This book does not require the trouble of covering the main circuit lead wires with an insulating tube sheath, and the wiring process for the main circuit lead wires is easier than in the case where the main circuit lead wires are covered with an insulating tube sheath.

[Brief explanation of drawings]

Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a front view with the spirit removed, Figs. 8 and 4 are sectional views in the closed state, and Fig. 5 is a tri-tiso. Cross-sectional view of the closed state according to
The figure shows strabismus 1 threshold with the lid removed. Figure 7 is an exploded perspective view of the opening/closing mechanism, and the 8th cabinet has been detected. Figure 9 is an exploded perspective view of the detector. (2) indicates the main circuit lead wire, inside indicates the opening/closing mechanism section, circle indicates the zero-phase current transformer, i4i indicates the tripping plate, gate indicates the detector box, β71 indicates the partition plate, and β~ indicates the small space. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 ``Da No. 71-'N No. 80

Claims (1)

[Claims] ill When multiple main circuit lead wires are inserted, the unbalance of the current flowing through these main circuit lead wires is detected and tripped [7
A detector box made of insulating material that houses the zero-phase current transformer is installed in the case of an earth leakage or pull-out that is equipped with a zero-phase current transformer that outputs a secondary output for A partition plate is provided to divide the sacred space for the main circuit lead wire in a phase current transformer into a plurality of spaces, and each main circuit lead wire is individually inserted into each small space partitioned by the number of partitions. An earth leakage breaker featuring: