(1) Electric operation and manual operation can be done;
(2) Testing the mechanical dynamic characteristics of various high-voltage circuit breakers within 500 kV voltage level;
(3) It can be measured and customized itinerary;
(4) It can realize single closing, single opening, closing opening, reclosing and reopening operations of the circuit breaker;
(5) Convenient wiring and simple operation. All data can be combined (divided) only once during operation. You can choose to save 50 sets of data, provide later query and upload to the computer for permanent storage, and can also be accessed on site Print all data and motion graphs;
(6) Use Chinese character prompts to operate in the manner of man-machine dialogue;
(7) Accurate data, strong anti-interference, small size, light weight, beautiful and generous;
(8) The machine is equipped with a clock circuit, which can display the current year, month, day, hour, minute, and second, even if the power is off, the setting data and test data can be automatically saved;
(9) There is a delay protection function inside the machine, which can automatically cut off the action power after the circuit breaker is activated, which well protects the circuit breaker equipment and the high-voltage switch tester;
(10) The instrument has a built-in DC power supply with a selectable range: 30-270V/10A). There is no instantaneous voltage drop in the output of conventional rectifier power supplies. It is used to test the switch action voltage with high accuracy.
(11) It can dynamically analyze the relationship between the stroke and the speed of the circuit breaker every 1ms;
(12) Upload software can be configured to realize computer archiving and online checking and printing.
(1) Simple structure, less maintenance and repair work.
(2) Long service life and reliable operation.
(3) It can be operated frequently without noise.
(4) The vacuum arc extinguishing effect is good, and the arc is not exposed.
(5) There is no danger of explosion.
Wiring mode of high voltage circuit breakerCircuit breaker wiring methods include front board, back board, plug-in type, and drawer type. If users have no special requirements, they will be supplied in front of the board. The front board wiring is a common wiring method.
1. Wiring behind the board
The biggest feature of the wiring behind the board is that the circuit breaker can be replaced or repaired without rewiring, just disconnect the front-level power supply. Due to the special structure, the product has been equipped with special mounting plates and mounting screws and wiring screws according to the design requirements when leaving the factory. Special attention should be paid to the fact that the reliability of the large-capacity circuit breaker will directly affect the normal use of the circuit breaker, so during installation It must be taken seriously and installed strictly according to the requirements of the manufacturer.
2. Plug-in wiring
On the mounting board of the complete set of equipment, first install a circuit breaker mounting seat, 6 plugs on the mounting seat, and 6 sockets on the circuit breaker connection board. There are connecting plates on the surface of the mounting base or bolts behind the mounting base, and the mounting base is pre-connected with power cords and load lines. When in use, insert the circuit breaker directly into the mounting base. If the circuit breaker is broken, just pull out the broken one and replace it with a good one. Its replacement time is shorter than the front and back wiring of the board, and it is convenient. A certain amount of manpower is required for plugging and unplugging. Therefore, current plug-in products in China are limited to a maximum of 400A in the frame current. This saves maintenance and replacement time. When installing the plug-in circuit breaker, check whether the plug of the circuit breaker is tightly pressed, and securely fasten the circuit breaker to reduce contact resistance and improve reliability.
3. Drawer type wiring
The in and out drawer of the circuit breaker is rotated by the rocker clockwise or counterclockwise. The plug-in structure is adopted in the main circuit and the secondary circuit, and the isolator necessary for the fixed type is omitted. This improves the economy of use, and at the same time brings great convenience to operation and maintenance, and increases safety and reliability. In particular, the main circuit contact holder of the drawer seat can be used in common with the NT type fuse circuit breaker contact holder, so that it can be directly inserted into the fuse for power supply in an emergency state.
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