住宅電氣故障分析及其改進(jìn)設(shè)計(jì).doc

住宅電氣故障分析及其改進(jìn)設(shè)計(jì)
山西省醫(yī)藥規(guī)劃設(shè)計(jì)院(有限公司) 　楊兆慶1)
摘　要　例舉了住宅居民用電中發(fā)生的一些電氣故障,分析了造成事故的原因,提出了在電氣設(shè)計(jì)方面需要
注意的若干事項(xiàng)及改進(jìn)措施。
關(guān)鍵詞　電氣故障　接觸電阻　漏電保護(hù)

　　近年來(lái)住宅用電負(fù)荷不斷增長(zhǎng),造成電氣線路長(zhǎng)時(shí)間處于過(guò)載狀態(tài),導(dǎo)致絕緣老化,電氣事故不斷發(fā)生。據(jù)消防部門(mén)統(tǒng)計(jì),我國(guó)電氣火災(zāi)已位居火災(zāi)成因之首,其中住宅電氣火災(zāi)
占全部火災(zāi)的50 %以上。隨著現(xiàn)代社會(huì)文明程度的提高,人們不僅對(duì)用電安全提出很高要求,而且對(duì)可靠連續(xù)供電的要求也越來(lái)越高。
1 　電氣故障及其原因分析
1. 1 　故障例舉
例1 :某住宅入戶(hù)處裝有漏電斷路器,但經(jīng)常跳閘。測(cè)量戶(hù)內(nèi)電氣線路無(wú)漏電,將漏電斷路器的輸出線路脫開(kāi),該斷路器仍跳閘,因此斷定為漏電斷路器出故障。在拆卸斷路器時(shí)看到出線樁頭處膠木底座酥松,刮后有粉狀物,表明漏電斷路器出線端子因接觸
Failure analysis and improvement of residential electrical design
Medical Planning and Design Institute of Shanxi Province (Limited) Yang Zhaoqing 1)
Abstract cites residents of some electrical power failure occurred, analyzes the reasons for the accident, put forward the need for electrical design
Note that a number of issues and improvement measures.
Key words electrical contact resistance fault leakage protection

In recent years, a growing residential electricity load, resulting in a long time in the electrical circuit overload condition, resulting in insulation aging, electrical accidents continue to occur. According to Fire Department statistics, the causes of electrical fires have been ranked first in the fire, in which residential electrical fires
50% of the total over the fire. With the improvement in the level of modern civilization, people not only make high demands on electrical safety, but also a reliable power supply continuously increasing demands.
1 Electrical Breakdown and Analysis
1.1 Fault cite
Example 1: A residential-home office equipped with residual current circuit breaker, but often trip. Measurement of indoor electrical wiring without leakage, the leakage circuit breaker output line was torn off and was still tripping the circuit breaker, so determined to be leakage circuit breaker fail. Saw the demolition breaker outlet crisp pile head office bakelite base, after shaving powder, that leakage circuit breaker outlet terminal contact with
 

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