CN218298449U

CN218298449U - Sensitivity detection device for circuit breaker

Info

Publication number: CN218298449U
Application number: CN202221125410.5U
Authority: CN
Inventors: 张跃军; 李贺雷; 陈锐; 王少娥
Original assignee: Hebei Research Institution For Product Quality Supervision And Inspection
Current assignee: Hebei Research Institution For Product Quality Supervision And Inspection
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2023-01-13
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a belong to circuit breaker sensitivity and detect technical field, specifically be a circuit breaker sensitivity detection device, which comprises a housin, the apron is installed to the casing upper end, the release has been placed to the casing inner chamber, the bottom plate is installed to the release bottom, bottom plate and casing inner chamber bottom contact cooperation, casing inner chamber bottom left side is provided with the dog, the bottom plate left side is provided with the fixed block, the through-hole has been seted up on the casing left side, set up threaded hole on the fixed block, install fastening bolt between casing and the bottom plate, install the casing on the circuit breaker, convenient to use, draw the current value of release through the controller, then with the terminal single-phase short-circuit current or double-phase short-circuit current value input control ware under the minimum operation mode of system of circuit breaker protection, with its current value with the release of drawing, obtain sensitivity, sensitivity shows through the display screen, convenient to use.

Description

Sensitivity detection device for circuit breaker

Technical Field

The utility model relates to a circuit breaker sensitivity detects technical field, specifically is a circuit breaker sensitivity detection device.

Background

A circuit breaker refers to a switching device capable of closing, carrying, and breaking current under normal or abnormal circuit conditions. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the use range of the circuit breaker, and the division of the high-voltage and low-voltage boundary lines is fuzzy, and is generally called as a high-voltage electrical appliance with the voltage of more than 3 kV.

In order to ensure that the instantaneous or short-delay overcurrent release of the circuit breaker can reliably act when the slightest short-circuit fault occurs in the protection range of the circuit breaker in the minimum operation mode of the system. The sensitivity of the circuit breaker protection must meet the low voltage distribution design code (CB 50054-95) that its sensitivity should not be less than 1.3. There is currently no specific means for detecting the sensitivity of the circuit breaker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker sensitivity detection device to the current that proposes in solving above-mentioned background does not have the special problem that is used for carrying out the device that detects to circuit breaker sensitivity.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a circuit breaker sensitivity detection device, includes the casing, the apron is installed to the casing upper end, the release has been placed to the casing inner chamber, the bottom plate is installed to the release bottom, bottom plate and casing inner chamber bottom contact cooperation, casing inner chamber bottom left side is provided with the dog, the bottom plate left side is provided with the fixed block, the through-hole has been seted up on the casing left side, set up threaded hole on the fixed block, install fastening bolt between casing and the bottom plate, fastening bolt passes behind the through-hole with the screw hole spiro union, fixed block and dog contact cooperation, be provided with the controller in the casing, the casing front side is provided with the display screen, the controller is connected with display screen, release electricity.

Preferably, a fixed seat is arranged at the bottom of the shell, and fixed holes are uniformly formed in the edge of the outer side of the fixed seat.

Preferably, the left end of the fastening bolt is fixedly connected with a stress rod.

Preferably, the lower end of the cover plate is provided with a limiting block.

Preferably, the outer wall of the shell is provided with a cable hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1) The shell is arranged on the circuit breaker, the use is convenient, the current value of the tripper is extracted through the controller, then the single-phase short-circuit current or the two-phase short-circuit current value of the tail end of the circuit protected by the circuit breaker in the system minimum operation mode is input into the controller, the single-phase short-circuit current or the two-phase short-circuit current value is divided by the extracted current value of the tripper to obtain the sensitivity, and the sensitivity is displayed through the display screen, so that the use is convenient;

2) The tripper is simple in fixing mode and convenient to install, disassemble and operate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the housing of the present invention;

fig. 3 is a schematic view of the three-dimensional structure of the present invention.

In the figure: the device comprises a shell 1, a fixing seat 2, a display screen 3, a cover plate 4, a limiting block 5, a controller 6, a release 7, a stop block 8, a stress rod 9, a fastening bolt 10, a through hole 11, a threaded hole 12, a fixing block 13, a bottom plate 14 and a fixing hole 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a circuit breaker sensitivity detection device, includes casing 1, and casing 1 installs on the circuit breaker, apron 4 is installed to 1 upper end of casing, release 7 has been placed to 1 inner chamber of casing, and release 7 is connected with the circuit breaker, bottom plate 14 is installed to release 7 bottom,

bottom plate

14 and 1 inner chamber bottom contact cooperation of casing, 1 inner chamber bottom left side of casing is provided with dog 8, bottom plate 14 left side is provided with fixed block 13, through-hole 11 has been seted up on 1 left side of casing, set up threaded hole 12 on fixed block 13, install fastening bolt 10 between casing 1 and the bottom plate 14, fastening bolt 10 passes behind the through-hole 11 with threaded hole 12 spiro union, fixed release 7 is fixed, fixed block 13 and dog 8 contact cooperation, be provided with controller 6 in the

casing

1, 1 front side of casing is provided with display screen 3, controller 6 is connected with display screen 3, release 7 electricity.

The bottom of the shell 1 is provided with a fixed seat 2, the outer side edge of the fixed seat 2 is evenly provided with a fixed hole 15, and the shell 1 is installed on the circuit breaker through the fixed seat 2.

The left end of the fastening bolt 10 is fixedly connected with a stress rod 9, so that the fastening bolt 10 can be conveniently rotated.

The lower end of the cover plate 4 is provided with a limiting block 5.

The outer wall of the shell 1 is provided with a cable hole.

The working principle is as follows: install casing 1 on the circuit breaker, convenient to use, release 7 is connected with the circuit breaker, draws the current value of release 7 through controller 6, then with the terminal single-phase short-circuit current or two-phase short-circuit current numerical value input controller 7 under the minimum operation mode of system of circuit protection, with its current value who divides the release of drawing, obtain sensitivity, sensitivity shows through display screen 3, convenient to use.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A circuit breaker sensitivity detection device comprises a shell (1), and is characterized in that: apron (4) are installed to casing (1) upper end, release (7) have been placed to casing (1) inner chamber, bottom plate (14) are installed to release (7) bottom, bottom plate (14) and casing (1) inner chamber bottom contact cooperation, casing (1) inner chamber bottom left side is provided with dog (8), bottom plate (14) left side is provided with fixed block (13), through-hole (11) have been seted up on casing (1) left side, set up threaded hole (12) on fixed block (13), install fastening bolt (10) between casing (1) and bottom plate (14), fastening bolt (10) pass behind through-hole (11) and screw hole (12) spiro union, fixed block (13) and dog (8) contact cooperation, be provided with controller (6) in casing (1), casing (1) front side is provided with display screen (3), controller (6) are connected with display screen (3), release (7) electricity.

2. The breaker sensitivity detection apparatus of claim 1, wherein: the bottom of the shell (1) is provided with a fixed seat (2), and the outer edge of the fixed seat (2) is uniformly provided with fixed holes (15).

3. The breaker sensitivity detection apparatus of claim 1, wherein: and the left end of the fastening bolt (10) is fixedly connected with a stress rod (9).

4. The breaker sensitivity detection apparatus of claim 1, wherein: the lower end of the cover plate (4) is provided with a limiting block (5).

5. The sensitivity detecting apparatus for circuit breaker according to claim 1, wherein: the outer wall of the shell (1) is provided with cable holes.