Circuit breaker system

A circuit breaker and device technology, applied in the field of circuit breaker systems, can solve problems such as overheating of downstream wires, achieve the effect of not reducing the safety level, avoiding complete system failure, and extending uptime

Pending Publication Date: 2022-07-22
EATON INTELLIGENT POWER LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the downstream wire may overheat due to the higher current because the upstream circuit breaker only trips after its trip threshold is reached

Method used

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  • Circuit breaker system

Examples

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Embodiment Construction

[0014] figure 1 Shown is at least part of a preferred embodiment of a circuit breaker system 3 comprising a first circuit breaker 1 and a second circuit breaker 2, the first circuit breaker 1 having a first trip unit, a first control unit and a first electrical sensor, the first control unit controls the first trip unit, the second circuit breaker 2 has a second trip unit, a second control unit and a second electrical sensor, the second A control unit controls the second trip unit, the circuit breaker system 3 further comprising means for communication between the first control unit and the second control unit, wherein the first control unit via the The means for communicating monitors whether there is an internal device failure in the second circuit breaker 2, wherein the first control unit is adapted to standardize an internal device failure of the second circuit breaker 2 when it is detected. The tripping characteristic is changed to the emergency tripping characteristic. ...

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Abstract

For a circuit breaker system (3) comprising a first circuit breaker (1) and a second circuit breaker (2), the first circuit breaker (1) has a first tripping unit, a first control unit, which controls the first tripping unit, and a first electrical sensor, the second circuit breaker (2) has a second tripping unit, a second control unit, and a second electrical sensor, which controls the second tripping unit. The first control unit controls the first tripping unit, the second control unit controls the second tripping unit, the circuit breaker system (3) further comprises a device for communication of the first control unit and the second control unit, it is suggested that the first control unit monitors whether an internal component fault exists in the second circuit breaker (2) through the device for communication, and the second control unit controls the second tripping unit. Wherein the first control unit is adapted to change its standard trip characteristic to an emergency trip characteristic when an internal device failure of the second circuit breaker (2) is detected.

Description

technical field [0001] The present invention relates to a circuit breaker system according to the general part of claim 1 . Background technique [0002] Conventionally, programmable circuit breakers with processors and different trip curves are used in different circuit breaker systems. It is common practice for the distribution network to include circuit breakers downstream of other circuit breakers. [0003] In the case of defective circuit breakers such as miniature circuit breakers (MCBs), hybrid circuit breakers (HCBs) or solid state circuit breakers (SSCBs), different methods can be used, eg via immediate tripping or via fault communication to notify the system operator. However, due to this single failure, one part of the system can be taken offline or the level of security can be reduced. It is also possible that tripping is no longer possible. In the event of a second fault such as overcurrent or residual current, the fault level required to trip the upstream ci...

Claims

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Application Information

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IPC IPC(8): H02H3/08
CPCH02H3/08H02H7/261H02H3/006H02H3/05H01H1/20
Inventor R·尤尔科维奇斯R·梅塞尔W·迪克勒
Owner EATON INTELLIGENT POWER LIMITED
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