CN2266144Y

CN2266144Y - Off and on time metering device for portable circuit breaker

Info

Publication number: CN2266144Y
Application number: CN 96210235
Authority: CN
Inventors: 张永祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-27
Filing date: 1996-04-27
Publication date: 1997-10-29
Anticipated expiration: 2006-04-27

Abstract

The utility model relates to an off and on time metering device for a circuit breaker. The utility model is composed of a main control return circuit, a direct current return circuit and a 408-typed electric second meter. The main control return circuit uses a guide switch 1K as a power switch, the point O of the main control return circuit is connected with a contactor C in series by a button QA, and an operation indicating lamp HD is connected between the point O of the main control return circuit and the other end of the contactor C in series. The utility model has the advantages of simple structure, less elements, few nodes, reliable action, light weight, small volume and convenient carrying. Because the utility model adopts the second meter of mechanical pointer type, the utility model is particularly suitable for environment which is interfered by strong electric field.

Description

A kind of portable beaker branch wire time determinator

The utility model belongs to the intrinsic branch wire time determinator of isolating switch.

Existing measurement mechanism comprises two kinds of digital and mechanical types.The present mechanical determinator that uses, the electronic stopwatch of 401 types is partly adopted in its timing, and it is bigger that this device exists volume, carry inconvenience, because of its line design complexity, the element node of usefulness is many, shortcomings such as out of order probability is also bigger, and reliable in action is relatively poor.

The purpose of this utility model is the weak point at above-mentioned prior art, and designed that a kind of circuit is simple, element is few, node is few, reliable in action, lightweight proving installation.

Circuit-breaker switching on-off time register of the present utility model, this device comprises: main control loop, DC loop, compositions such as 408 type electrical secondmeteres, main control loop by director switch 1K as power switch, the O point is serially connected with contactor C by knob QA in the loop, is serially connected with relay indicating light HD between O point and the ground and the other end of contactor C in the loop, and the middle branch of O point and relay indicating light HD is often opened node C by contactor C's ₁The live wire end that connects the power supply terminal of 408 type electrical secondmeteres, DC loop direct supply positive and negative electrode are often opened node C through contactor C respectively ₂, C ₃Node is delivered to the two ends of the combined floodgate or the switching winding of isolating switch, and the zero line side of the power supply terminal of 408 type electrical secondmeteres is connected with 408 ※ places, and the control terminal of 408 type electrical secondmeteres is connected with the 408K place.

The utility model and original determinator are relatively, because this device (408 type) has only used a band often to open the start button QA of node, seven nodes (four of combined floodgate knobs, three of separating brake knobs) than 401 type measurement mechanisms greatly reduce, and the reliability of device improves greatly.The volume of original device is 400 * 300 * 200mm ³, 408 type measurement mechanisms only are 200 * 150 * 150mm ³, greatly reduce, be easy to carry, alleviated weight, reduced working strength of workers, be the mechanical pointer stopwatch owing to what adopt, so be specially adapted to the highfield interference environment.

Description of drawings:

Fig. 1 is an electrical schematic diagram of the present utility model.

Fig. 2 is the DC loop electrical schematic diagram.

Fig. 3 connects 408 type electrical secondmeter fundamental diagrams.

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.Fig. 1 is the electrical schematic diagram of this device.Director switch 1K is as power switch, and red light HD is as relay indicating light, and the one end links to each other with ground, has only when the O point links to each other with power firestreak, and relay indicating light HD could be luminous.Equally, when having only the O point to link to each other with live wire, press start button QA, contactor C could move; Otherwise when linking to each other with zero-power line as if the O point, pilot lamp HD is not luminous, presses QA, and contactor C can not move yet.Fig. 2 is a DC loop.The DC loop positive and negative electrode is respectively through the C of contactor C ₂, C ₃Node is delivered to the two ends of the combined floodgate or the switching winding of isolating switch.408 ※ are the zero line side of 408 type electrical secondmeter power supply terminals among Fig. 3, and 408K is the control terminal of 408 type electrical secondmeteres.The major control principle of 408 type electrical secondmeteres is: behind power supply terminal and the power connection, electrical secondmeter picks up counting, and behind its control terminal 408K and zero-power line terminal 408 ※ short circuits, electrical secondmeter stops timing.

The mensuration of closing time: as for closing position, power turn-on switch 1K presses start button QA with selector switch 2K, the charged ON Action of contactor C, and it often opens node C ₁, C ₂, C ₃, C ₄, C ₅Closed.Direct supply passes through C ₂, C ₃Be added on the closing coil; Meanwhile, power supply terminal 408 ※ of 408 type electrical secondmeteres, the 220V terminal (passes through C with ground and live wire respectively ₁) communicate, electrical secondmeter picks up counting.After the three-phase of isolating switch disconnects mouthful closure, be connected the B that isolating switch is the fracture both sides ₁With B ₂Short circuit, 408K passes through C ₄, B ₁, B ₂, C ₅, with 408 ※ short circuits, electrical secondmeter stops timing, measures the intrinsic closing time of isolating switch.

The mensuration of opening time: with selector switch 2K as for the separating brake position.The 1K that closes presses start button QA, contactor C action, C ₁, C ₂, C ₃, C ₄, C ₅Closure, the 220V power supply terminal of 408 type electrical secondmeteres passes through C ₁Communicate with power firestreak.408 ※ pass through C ₄, be connected the B of isolating switch three-phase fracture both sides ₁, B ₂And C ₅Connect with ground, the electrical secondmeter power connection picks up counting, after isolating switch three-phase fracture disconnects, and B ₁, B ₂Disconnect, 408 ※ separate with ground, and the electric power loop of electrical secondmeter disconnects and stops timing, finishes the mensuration of the intrinsic opening time of isolating switch.The technical feature of these device 408 type electrical secondmeteres that adopt is identical with 401 types.

Claims

1, a kind of portable beaker branch wire time determinator, it is characterized in that it comprises: main control loop, DC loop, compositions such as 408 type electrical secondmeteres, main control loop by director switch 1K as power switch, the O point is by knob QA serial connection tentaculum C in the loop, in the loop O point and and the other end of contactor C between be serially connected with relay indicating light HD, the middle branch of O point and relay indicating light HD is often opened node C by contactor C's ₁The live wire end that connects the power supply terminal of 408 type electrical secondmeteres, DC loop direct supply positive and negative electrode are often opened node C through contactor C respectively ₂, C ₃Deliver to the two ends of the combined floodgate or the switching winding of isolating switch, the zero line side of the power supply terminal of 408 type electrical secondmeteres is connected with 408 ※ places, and the control terminal of 408 type electrical secondmeteres is connected with the 408K place.