Large-capacity low-voltage circuit breaker instantaneous action characteristic test equipment
A low-voltage circuit breaker and instantaneous action technology, which is applied in the field of equipment for testing the instantaneous action characteristics of large-capacity low-voltage circuit breakers, can solve the problems of high use cost, low efficiency, limited application occasions, etc. Reliable effect of disassembly and electrical contact
Active Publication Date: 2019-09-20
WENZHOU UNIV +1
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Problems solved by technology
[0003] At present, the detection of instantaneous characteristics of large-capacity low-voltage circuit breakers is mainly done by manually operating electrician-type high-current test devices, which have disadvantages such as low test accuracy, low efficiency, low level of intelligence, limited application occasions, and high cost of use.
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[0031] See attached figure 1 to attach Figure 8 , a large-capacity low-voltage circuit breaker instantaneous action characteristic testing equipment disclosed in the present invention includes a frame 1, a circuit breaker loading platform and a test system, and the test system includes a large-current AC constant current source for providing a test current of the circuit breaker to be tested , the high-current AC constant current source is equipped with an extended controller, which is used to monitor and store the current output state of the high-current AC constant current source. There are four types of state control information of the extended controller: (1) 00H is constant The current source is outputting current; (2) 01H means that the output current of the constant current source is qualified; (3) 10H means that the output current of the constant current source is unqualified; (4) 11H means that the constant current source has no current output (idle);
[0032] The t...
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The invention relates to a high capacity low voltage breaker snap action snap action characteristic test equipment. A test system of the equipment comprises a constant current source with an expansion controller, an industrial control computer, a PLC, a commutation mechanism and a data recording unit used for acquiring breaker transient characteristic data, wherein A, B, C and N poles of a to-be-tested breaker are individually controlled by the commutation mechanism for being in series connection with the constant current source, any two of the A, B and C poles are controlled for being in series connection with the constant current source, a transient acting current start instruction is emitted to control the constant current source for outputting an expected current when record in the expansion recorder is detected by the industrial control computer to have no current output of the constant current source, test parameters of the to-be-tested breaker are set through an operation interface of the industrial control computer, a breaker test control instruction is emitted by the industrial control computer to the PLC, and each test loop of the commutation mechanism is controlled by the PLC for realizing switching conduction to accomplish test on the to-be-tested breaker according to the breaker test control instruction. The test equipment has advantages of high detection precision, fast pace, high intelligentization level and reliable performance.
Description
technical field [0001] The invention relates to the technical field of circuit breaker testing, in particular to equipment for testing the instantaneous action characteristics of large-capacity low-voltage circuit breakers. Background technique [0002] The low-voltage circuit breaker is a key component to protect the low-voltage power distribution backbone network. It is of great significance to ensure the safe and reliable operation of the low-voltage power distribution network, and is widely used in the low-voltage power distribution backbone network. In order to ensure the working reliability of the low-voltage circuit breaker, strict testing and inspection must be carried out on various technical indicators of the product before leaving the factory, among which the instantaneous action characteristic is the key technical indicator of the circuit breaker. [0003] At present, the detection of instantaneous characteristics of large-capacity low-voltage circuit breakers is...
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IPC IPC(8): G01R31/327
Inventor 赵升梁步猛吴桂初吴自然许海波许小锋陈冲陈小益
Owner WENZHOU UNIV