What is the symbolic meaning of the high voltage circuit breaker model? Introduction to the characteristics of high voltage circuit breakers

In normal life, the frequency of use of switches is definitely higher. However, this does not mean that people know a lot about the switch. For example, a high-voltage circuit breaker that is not common in life, although it is also a type of switch, is used to control high-voltage circuits, so there is little contact in life, and even fewer people know about it. To this end, Xiaobian compiled some knowledge about the model and meaning of high-voltage circuit breakers to share with everyone, I believe that we can certainly bring some help to everyone.

At present, the model of high-voltage circuit breakers in China is generally composed of text symbols and numbers in the following manner according to the provisions of national technical standards:

Its representative meaning is:

1—Product letter code, represented by the following letters: S—small oil circuit breaker; D—multi-oil circuit breaker; K—air circuit breaker; L—sulphur hexafluoride circuit breaker; Z—vacuum circuit breaker; Q—gas production Circuit breaker; C-magnetic blow breaker.

2—Device location code; N—indoor, W—outdoor.

3—Design sequence number; represented by numbers 1, 2, 3, ....

4—rated voltage, KV.

5—Other supplementary work characteristic signs, G—improved, F—phase separation operation.

6—rated current, A.

7—rated breaking current, KA.

For example: a high-voltage circuit breaker model: ZN10-10/300-750, which means indoor vacuum circuit breaker, design number is 10, rated voltage 10KV, rated current 300A, rated breaking capacity 750MVA.

High voltage circuit breaker features:

(1) It can be operated electrically and manually.

(2) Test of mechanical dynamic characteristics of various high-voltage circuit breakers within the appropriate 500KV voltage level.

(3) measurable stroke and custom stroke.

(4) It is possible to realize the single, single, integral, coincidence and re-division operation of the circuit breaker.

(5) Convenient wiring and simple operation. Only one combined (minute) action can be used to obtain all data in combination. You can choose to save 50 sets of data, provide post-inquiry and upload computer for permanent storage, or you can access it on-site. Print all data and motion graphs.

(6) Use Chinese characters to operate in a human-machine dialogue.

(7) The data is accurate, anti-interference is strong, the volume is small, the weight is light, and the appearance is elegant.

(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 turned off, the setting data and test data can be automatically saved.

(9) The machine has a delay protection function. When the circuit breaker is activated, it can automatically cut off the power supply, which protects the circuit breaker equipment and the high-voltage switch tester.

(10) The built-in DC power supply of the instrument can be selected from the range of 30-270V/10A. There is no voltage drop at the output of the conventional rectified power supply, which is used to test the switching voltage is very accurate.

(11) It can dynamically analyze the relationship between the stroke and speed of the circuit breaker every 1ms.

(12) Configurable uploading software, realizing computer archive and online access, printing.

The model number of the high voltage circuit breaker consists of letters and numbers, each of which has its specific meaning. We can see the type, rated voltage, rated current, device location, rated breaking current and other information from the model of the high voltage circuit breaker. In addition, when using high voltage circuit breakers, be sure to pay attention to the use environment. When using a high voltage circuit breaker, pay attention to compatibility with other circuit protection measures according to its characteristics. If a malfunction occurs, it must be repaired in time, and safety is the first priority.