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Carrier Link Insulators for Circuit Breakers

A technology of circuit breakers and insulators, applied in circuits, parts of protection switches, operation/release mechanisms of protection switches, etc., and can solve problems such as short circuits

Active Publication Date: 2017-03-01
EATON INTELLIGENT POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Arcing during separation could therefore electrically contact the drive linkage, creating a potential short circuit condition

Method used

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  • Carrier Link Insulators for Circuit Breakers
  • Carrier Link Insulators for Circuit Breakers
  • Carrier Link Insulators for Circuit Breakers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] figure 1 An air circuit breaker 1 is shown. The air circuit breaker comprises a housing 3 (shown in dashed lines) forming three pole chambers 4, 5, 6 each for housing a circuit breaker pole 10 (only one pole 10 in figure 1 shown in solid line). The operating mechanism 15 is mounted on the front end of the housing 3 . The operating mechanism 15 is common to all three circuit breaker poles 10 and is connected to each pole by a pole shaft 33 having a driving lobe 35 for each pole. The drive lobe 35 is pivotally connected to a pair of carrier drive links 37 which translate the motion of the drive lobe 35 into motion of a pole member to separate the contacts of the pole. The operating mechanism 15 includes a trip unit (not shown) that actuates the operating mechanism to open all poles of the circuit breaker by rotation of the pole shaft 33 in response to predetermined characteristics of the current flowing through the circuit breaker. Furthermore, the operating mechanism...

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PUM

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Abstract

The invention discloses a carrier link insulator for a circuit breaker. In a circuit breaker, a carrier link insulator electrically isolates the carrier drive link from the arc chamber.

Description

Background technique [0001] Electrical switchgear for electrical distribution systems includes devices such as circuit breakers, network protectors, transfer switches, and disconnect switches. A common type of circuit breaker is the air circuit breaker, which uses airflow to eliminate arcing caused by contact separation. This airflow may be provided by a source of compressed air or by air leaving the pressurized sealed arc chamber when the contacts separate. A portion of a drive linkage that actuates the contact separation mechanism may be positioned within the arc chamber when the circuit breaker contacts are closed. Arcing during separation may therefore electrically contact the drive linkage, creating a potential short circuit condition. Contents of the invention [0002] In one embodiment, an apparatus includes a contact carrier configured to be actuated by a carrier drive link to travel along a contact closed position and a contact open position Carry one or more mov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/00H01H71/10
CPCH01H9/346H01H71/0228H01H2009/305H01H2009/347
Inventor B·J·沙尔滕布兰德M·A·亚努塞克R·W·米勒
Owner EATON INTELLIGENT POWER LTD