Novel isolation contact for pole-mounted circuit breaker

Abstract

The utility model relates to the technical field of isolation contacts, in particular to a novel isolation contact for a pole-mounted circuit breaker. The novel isolation contact is installed between a conducting rod and an isolation disconnecting link of the current transformer and comprises a fixing ring and a disconnecting link connecting rib, an opening is formed in the bottom of the fixing ring, locking blocks are arranged at the two ends of the opening, and locking holes penetrating left and right are formed in the locking blocks on the two sides; the disconnecting link connecting rib is arranged on the fixing ring and is shaped like a Chinese character'chang '; a movable hole is formed in the front end of the disconnecting link connecting rib; the central axis of the movable hole is not higher than the central axis of the fixed ring; according to the utility model, the phenomenon of discharging after the high-altitude test voltage is corrected due to the fact that the position of the isolation switch is too high (exceeding the insulation umbrella skirt) is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating contacts, and particularly relates to a novel isolating contact for a pole-mounted circuit breaker. Background Art

[0002] The fixed position of the isolating moving contact and the isolating knife switch of a conventional pole-mounted circuit breaker is above the conductive rod, which can well fix the isolating knife switch. However, the result is that after correcting the test voltage parameters in high-altitude areas, the isolating knife switch is prone to discharge with the mutual inductor due to its upper position, so the structure of the isolating contact is improved this time. Content of the Utility Model

[0003] In order to make up for the deficiencies in the prior art and achieve the above functions, the utility model provides a novel isolating contact for a pole-mounted circuit breaker.

[0004] The utility model is realized by the following technical solutions:

[0005] A novel isolating contact for a pole-mounted circuit breaker, the novel isolating contact is installed between the conductive rod of the current mutual inductor and the isolating knife switch, and includes a fixed ring and a knife switch connecting rib. The bottom of the fixed ring is open, and locking blocks are arranged at both ends of the opening. Locking holes penetrating left and right are arranged on the locking blocks on both sides;

[0006] It further includes a knife switch connecting rib in a "factory" shape arranged on the fixed ring, and a movable hole is arranged at the front end of the knife switch connecting rib.

[0007] Further, the central axis of the movable hole is not higher than the central axis height of the fixed ring.

[0008] Further, the inner layer base material of the novel isolating contact is made of copper, and the outer layer is nickel-plated or silver-plated.

[0009] Further, the fixed ring is sleeved on the conductive rod and is locked and fixed by a bolt passing through the locking hole.

[0010] Further, the locking hole and the through hole on the isolating knife switch are rotationally connected by a bolt.

[0011] The beneficial effect of the utility model is that after correcting the test voltage parameters in high-altitude areas, the isolating knife switch of the utility model no longer discharges, and at the same time, it does not affect the structures of other components of the whole machine. Description of the Drawings

[0012] Figure 1 It is a side view of a conventional pole-mounted circuit breaker;

[0013] Figure 2 It is a front view of the utility model;

[0014] Figure 3 3D schematic diagram of the present utility model;

[0015] Figure 4 Schematic diagram after the assembly of the present utility model.

[0016] In the figure:

[0017] 1. Isolating switch, 2. Conventional isolating moving contact, 3. Current transformer, 301. Conductive rod, 302. Insulating umbrella skirt, 4. Arc extinguishing chamber, 5. Inlet end, 6. Outlet end, 601. Insulator, 7. New type isolating contact, 701. Fixed ring, 702. Locking block, 703. Locking hole, 704. Switch connecting rib, 705. Moving hole. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model. [[ID=]]

[0020] For easy understanding, reference is made to the prior art Figure 1 , the inlet end 5 of the pole-mounted circuit breaker is located above the arc extinguishing chamber 4, the arc extinguishing chamber 4 is connected to the current transformer 3, a conductive rod 301 extends forward from the current transformer 3, the outlet end 6 is provided on the insulator 601, and the isolating switch 1 is movably connected to the insulator 601. The connection position of the conventional isolating moving contact 2 is: the end of the isolating switch 1 is located above the conductive rod 301.

[0021] As Figure 2 and Figure 3 shown, the new type isolating contact 7 is installed between the conductive rod 301 of the current transformer 3 and the isolating switch 1, and includes a fixed ring 701 and a switch connecting rib 704. The bottom of the fixed ring 701 is open and locking blocks 702 are provided at both ends of the opening. Locking holes 703 penetrating left and right are provided on the locking blocks 702 on both sides;

[0022] It further includes a switch connecting rib 704 in a "factory" shape provided on the fixed ring 701, and a moving hole 705 is provided at the front end of the switch connecting rib 704.

[0023] The central axis of the movable hole 705 is not higher than the central axis of the fixed ring 701. After the new isolation contact 7 is connected to the isolation switch 1, it will not discharge after correcting the high altitude test voltage because the position of the isolation switch 1 is too high (too high will exceed the insulating skirt 302 in front of the current transformer 3).

[0024] Of course, it should be known that after installation, the conductive rod 301 and the isolating switch 1 should not interfere with each other.

[0025] The inner substrate of the novel isolation contact 7 is made of copper, and the outer layer is plated with nickel or silver.

[0026] The fixing ring 701 is sleeved on the conductive rod 301 and is locked and fixed by bolts passing through the locking hole 703.

[0027] The locking hole 703 is rotatably connected to the through hole on the isolating switch 1 by bolts.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A novel isolating contact for a pole-mounted circuit breaker, wherein the novel isolating contact (7) is installed between the conductive rod (301) of a current transformer (3) and an isolating switch (1), characterized in that: It includes a fixed ring (701) and a disconnecting switch connecting rib (704). The bottom of the fixed ring (701) is open, and locking blocks (702) are provided at both ends of the opening. Locking holes (703) penetrating left and right are provided on the locking blocks (702) on both sides. It further includes a disconnecting switch connecting rib (704) in the shape of "factory" arranged on the fixed ring (701). An activity hole (705) is provided at the front end of the disconnecting switch connecting rib (704).

2. The novel isolating contact for a pole-mounted circuit breaker according to claim 1, characterized in that: The central axis of the activity hole (705) is not higher than the height of the central axis of the fixed ring (701).

3. The novel isolating contact for a pole-mounted circuit breaker according to claim 1, characterized in that: The inner base material of the novel isolating contact (7) is made of copper, and the outer layer is nickel-plated or silver-plated.

4. The novel isolating contact for a pole-mounted circuit breaker according to claim 1, characterized in that: The fixed ring (701) is sleeved on the conducting rod (301) and is locked and fixed by a bolt passing through the locking hole (703).

5. The novel isolating contact for a pole-mounted circuit breaker according to claim 1, characterized in that: The locking hole (703) is rotationally connected to the through hole on the isolating switch (1) by a bolt.

Images