CN206788308U - Full-automatic multiloop secondary cable Insulation test servicing unit - Google Patents

Abstract

The utility model discloses a kind of full-automatic multiloop secondary cable Insulation test servicing unit, the servicing unit includes cpu controller, relay and the aviation plug being sequentially connected, and the controller is connected to power supply；The test survey of wire terminal one is set to be connected with aviation plug, the connection of opposite side and cable under test.The utility model has the advantages that circuit structure is simple, wiring is simple, easily makes, be easy to use, and finished-product volume is small, good insulation preformance, cost-effective；The testing time is substantially shorter using the utility model, and can effectively avoid test leakage phenomenon, it is ensured that the accuracy and reliability of Substation secondary circuit Insulation test.

Description

Fully automatic multi-circuit secondary cable insulation test auxiliary device

technical field

The utility model relates to an insulation test auxiliary device, in particular to an automatic multi-circuit secondary cable insulation test auxiliary device.

Background technique

According to relevant regulations, 100% of the secondary equipment current, voltage, control, signal and other circuit cables must be tested for insulation between the same cable core and the cable core to the ground before the overhaul, technical renovation or new equipment is put into operation. At present, the method that can be adopted in the industry is to use the insulation tester to carry out the insulation test through manual switching.

The cable core insulation is tested by manual switching. It is necessary to insert and cut the test line plug of the insulation tester repeatedly. The test takes a long time. The average time for the detection of each secondary cable is as long as 3.13 minutes. With the increase of cable cores, the detection The average time is geometrically increased; on the other hand, because there are many test circuits and cable core wires, and the cable wiring is dense, when manually switching the cable core mode for insulation testing, there will be missed tests if you do not pay attention; the secondary cable insulation Integrity is an important indicator to ensure the normal operation of the secondary circuit. The cables missed by the manual insulation test have buried hidden dangers for the safe, stable and reliable operation of the secondary circuit.

Utility model content

The technical problem to be solved by the utility model is to overcome the above-mentioned defects and provide a fully automatic multi-circuit secondary cable insulation testing auxiliary device with fast testing speed and avoiding missed testing.

In order to solve the above-mentioned technical problems, the utility model described automatic multi-circuit secondary cable insulation test auxiliary device, the auxiliary device includes a CPU controller, a relay and an aviation plug connected in sequence, and the controller is connected to a power supply; Set the connector of the test line to be connected to the aviation plug, and the other side to be connected to the cable to be tested.

Further, the CPU controller described in the utility model is a single-chip microcomputer.

As a preference, the aviation plug of the utility model is a 16-core aviation plug; the test line connector is a 16-pole wiring connector.

The full-automatic multi-circuit secondary cable insulation test auxiliary device described in the utility model connects all the core wires of the cable to be tested to the test line connector and then connects them to the aviation plug, and finally connects to the relay and the test line of the insulation tester. Enter the relay, and control the on-off of the relay contact through the CPU controller, that is, the single-chip microcomputer, to realize the insulation test and change the wiring. The utility model only needs to connect all the core wires into the device at one time, and the follow-up test can be completed automatically, and the insulation of each core wire can be tested at the same time. No matter how many core cables are used, it only needs to be disconnected and the average time for testing is increased. The average time spent on the measurement is achieved to achieve the goal of shortening the test time overall; all cable cores are connected to the device at one time, which can eliminate the possibility of omission caused by artificial single-core connection, and avoid missed testing.

Beneficial effects of the utility model: the utility model has the advantages of simple circuit structure, simple wiring, easy manufacture, and convenient use. The finished product is small in size, good in insulation performance, and high in cost performance; It eliminates the phenomenon of leakage, greatly improves the accuracy and reliability of the secondary circuit insulation test of the substation, solves the problems existing in the secondary cable insulation test process, and reduces the power grid operation caused by the unqualified secondary circuit insulation. risk; the wiring is simple, the operation is convenient, the insulation test process is optimized, and the time for new construction, technical renovation project construction, and acceptance insulation test is effectively shortened; the on-site operators are freed from a large number of mechanical and repetitive tasks, and fatigue work is avoided. Improve work efficiency.

Description of drawings

Fig. 1 is a schematic block diagram of the structure of the utility model.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The utility model is a fully automatic multi-circuit secondary cable insulation test auxiliary device, the auxiliary device includes a CPU controller 1, a relay 2 and an aviation plug 3 connected in sequence, the controller 1 is connected to a power supply 5; a test line connector 4 is provided One test is connected with the aviation plug 3, and the other side is connected with the cable 6 to be tested.

Further, the CPU controller 1 of the present invention is a single-chip microcomputer.

As a preference, the aviation plug 3 of the utility model is a 16-core aviation plug; the test line connector 4 is a 16-pole wiring connector.

Embodiment: The single-chip microcomputer (CPU controller 1) is used to control the relay 2 to realize the wiring change, and the relay action is controlled by the program. The overall circuit is assembled and constructed using the general single-chip microcomputer board and the relay board, and the "double female" single relay wiring method is adopted for the wiring change. The outer box of the utility model is made of acrylic board, which has good insulation performance, is easy to cut and process, is corrosion-resistant, and is easy to clean. All components can be installed in the acrylic box.

In actual work, the commonly used cable cores are 4, 6, 7, 8, 10, 12, and 14. In order to meet the daily work needs, the utility model sets the maximum number of test cores to 16, and the aviation plug 3 is a 16-core aviation plug. , the test line connector 4 is a 16-pole wiring connector; in order to meet the wiring requirements for core wires of various wire diameters, the test line connector 4 is crimped and fastened to the wiring, which is not easy to fall off. The metal part is encapsulated in the insulation during use. Inside the shell, there is no risk of grounding and short circuit, ensuring reliable test results; connect all the core wires of the cable 6 to be tested to the female head of the aviation plug 3 through the test line connector 4, and the core wires to be tested are transferred from the aviation plug 3 to Connected to the contact of relay 2, it is not affected by the length of the core wire of the cable to be tested and the space arrangement, which is convenient for wiring; the test line of the insulation tester 7 is also connected to the relay 2, and the relay contact is controlled by the single-chip microcomputer to realize the insulation test and change the wiring.

The single-chip microcomputer provides 1-16 outputs according to the selection, and controls the normally open and normally closed contacts of the 1-16 relays. The relay 2 is connected one by one through the 16-core aviation plug 3 and the 16-pole test line connector 4; the insulation tester 7 can provide 1000V AC voltage, the cable 6 to be tested is respectively connected to the relay 2 through the test line connector 4 and the aviation plug 3, and the number of cables to be tested N+1 is input on the numeric keypad 8 of the CPU controller 1 (single-chip microcomputer), and confirmed and Start the insulation test, and the single-chip microcomputer automatically controls the relay to complete the phase-to-phase and ground insulation tests of the cable cores to be tested. After the test is completed, the 6 cores of the cable to be tested will be automatically discharged, and the test data will be displayed on the insulation tester 7 in real time.

The utility model can automatically test the insulation of the secondary cables, realize the automatic test of the insulation of the cable cores, reduce the detection time of a single cable, eliminate the missing detection site of the cores, and finally realize the average insulation test of each secondary cable. The time is shortened from more than 3 minutes to less than 0.5 minutes, and the phenomenon of secondary cable leakage is eliminated.

The above is only one embodiment of the present utility model, and anyone who uses the above structure shall fall into the protection scope of the present utility model.

Claims (3)

1. full-automatic multiloop secondary cable Insulation test servicing unit, it is characterised in that the servicing unit includes connecting successively The cpu controller connect（1）, relay（2）And aviation plug（3）, the controller（1）It is connected to power supply（5）；P-wire is set Joint（4）One survey and aviation plug（3）Connection, opposite side and cable under test（6）Connection.

2. full-automatic multiloop secondary cable Insulation test servicing unit according to claim 1, it is characterised in that described Cpu controller（1）For single-chip microcomputer.

3. full-automatic multiloop secondary cable Insulation test servicing unit according to claim 1, it is characterised in that the boat Blind plug（3）For 16 core aviation plugs；The test wire terminal（4）For 16 pole wiring connectors.