Power supply system of intelligent circuit breaker

A technology of intelligent circuit breaker and power supply system, which is applied in the direction of emergency power protection, no intermediate conversion to AC conversion equipment, irreversible conversion of AC power input into DC power output, etc., which can solve the problem of high requirements for transformer coils, high cost, Problems such as large power consumption, to ensure the effect of normal operation

Pending Publication Date: 2021-11-26
真兰电气(上海)有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing power sup

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  • Power supply system of intelligent circuit breaker
  • Power supply system of intelligent circuit breaker
  • Power supply system of intelligent circuit breaker

Examples

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Embodiment Construction

[0017] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0018] Such as figure 1 As shown, a smart circuit breaker power supply system provided by the present invention includes a voltage power supply system and a current power supply system.

[0019] When the voltage at the front end of the smart circuit breaker is normal, the whole system is powered by the voltage power supply system. When there is only current and no voltage at the front end of the smart circuit breaker, the ent...

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Abstract

The invention relates to a power supply system of an intelligent circuit breaker. The intelligent circuit breaker consists of a protection circuit for protecting a circuit, an additional function circuit except the protection circuit, and a main control chip for controlling the additional function circuit and the protection circuit. The intelligent circuit breaker power supply system comprises a voltage power supply system and a current power supply system. When the voltage at the front end of the intelligent circuit breaker is normal, the voltage power supply system supplies power; and when the front end of the intelligent circuit breaker only has current and does not have voltage, a current power supply system supplies power, and the current power supply system only supplies power to a protection circuit and a main control chip in the intelligent circuit breaker. The problem that an existing current transformer coil cannot meet requirements after functions of an intelligent circuit breaker are continuously increased is solved. Meanwhile, when the voltage power supply system cannot work normally, the current power supply system can be used for supplying power to the protection circuit of the intelligent circuit breaker, and normal operation of the circuit breaker is ensured.

Description

technical field [0001] The invention relates to a circuit breaker power supply system. Background technique [0002] Smart circuit breakers are mainly used in the field of low-voltage power distribution. With the continuous development of modern power systems in the direction of intelligence, more and more functions are integrated in circuit breakers. As the functional requirements of the circuit breaker continue to increase, the power consumption required by the circuit breaker itself is also continuously increasing, which puts forward higher requirements on the power supply system of the circuit breaker. [0003] The existing circuit breaker power supply system mainly relies on the current induced by the current transformer to realize the power supply, and with the continuous increase of the function of the intelligent circuit breaker, the test of the power supply system also follows. If you continue to use the traditional power supply method, to ensure that the circuit ...

Claims

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Application Information

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IPC IPC(8): H02M3/04H02M7/06H02H1/06
Inventor 郑长友张佳
Owner 真兰电气(上海)有限公司
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