墻壁開關插座的選擇方法如下:
1、看外殼材料
市場(chang)上主要(yao)開關(guan)品牌一般選用(yong)PC料(liao)(liao),PC料(liao)(liao)又(you)叫防彈(dan)膠,抗(kang)沖擊、耐高溫(wen)、不易(yi)變色(se)(se)的(de)特性對于(yu)控制電氣(qi)的(de)開關(guan)來(lai)說(shuo)很重(zhong)要(yao)。比(bi)較(jiao)好的(de)開關(guan)正(zheng)面(mian)(mian)(mian)面(mian)(mian)(mian)板和背面(mian)(mian)(mian)的(de)底座都是用(yong)PC料(liao)(liao)的(de),而一般的(de)開關(guan)會在底座上用(yong)黑色(se)(se)的(de)尼龍料(liao)(liao)替換PC料(liao)(liao),這(zhe)樣成本就(jiu)能降低很多。
2、看觸點
就是開關過程中導(dao)電(dian)零件的接(jie)觸(chu)(chu)點(dian)(dian)。觸(chu)(chu)點(dian)(dian)一(yi)要(yao)看(kan)大(da)(da)小(xiao)(xiao)(越大(da)(da)越好),二要(yao)看(kan)材料。觸(chu)(chu)點(dian)(dian)主要(yao)有三(san)種,銀鎳(nie)合(he)(he)金(jin)、銀鎘(ge)合(he)(he)金(jin)和純銀。銀鎳(nie)合(he)(he)金(jin)是比(bi)較(jiao)(jiao)理(li)(li)想(xiang)的觸(chu)(chu)點(dian)(dian)材料,導(dao)電(dian)性能、硬度(du)比(bi)較(jiao)(jiao)好,也(ye)不容(rong)易(yi)氧(yang)化生銹(xiu)。銀鎘(ge)合(he)(he)金(jin)觸(chu)(chu)點(dian)(dian)其(qi)他(ta)方面(mian)也(ye)都(dou)比(bi)較(jiao)(jiao)好,但(dan)就是鎘(ge)元素屬(shu)(shu)于重(zhong)金(jin)屬(shu)(shu),一(yi)方面(mian)對人體有害,另一(yi)方面(mian)和銀的融合(he)(he)性也(ye)不太理(li)(li)想(xiang),會(hui)在觸(chu)(chu)點(dian)(dian)表面(mian)形成(cheng)鎘(ge)金(jin)屬(shu)(shu)小(xiao)(xiao)顆(ke)粒,導(dao)電(dian)時(shi)可能拉出電(dian)弧。純銀做(zuo)觸(chu)(chu)點(dian)(dian)其(qi)實并不合(he)(he)適(shi),導(dao)電(dian)性能的確不錯,但(dan)純銀質地比(bi)較(jiao)(jiao)軟、還很(hen)(hen)容(rong)易(yi)氧(yang)化(像銀首飾時(shi)間(jian)一(yi)長就會(hui)變黑(hei))。質地軟,開關多了觸(chu)(chu)點(dian)(dian)就變形了;氧(yang)化生銹(xiu)的話(hua)導(dao)電(dian)性能會(hui)差(cha)很(hen)(hen)多,銹(xiu)點(dian)(dian)還容(rong)易(yi)發熱,很(hen)(hen)容(rong)易(yi)就把觸(chu)(chu)點(dian)(dian)燒(shao)化了。
3、看結構
主要(yao)(yao)都是(shi)大面板式的(de),外(wai)觀和手(shou)(shou)感(gan)都比以(yi)前拇(mu)指(zhi)式的(de)要(yao)(yao)好(hao)。拇(mu)指(zhi)式的(de)最(zui)大的(de)問(wen)題在于容(rong)易(yi)卡(ka)住(zhu),因為力矩比較(jiao)短(duan),開關(guan)動作幅度比較(jiao)小(xiao),彈簧輕微(wei)軟一點(dian)或過硬一點(dian),都可(ke)能(neng)造成(cheng)開關(guan)卡(ka)住(zhu)。前兩天看(kan)到格雷(lei)(別跟(gen)我說它是(shi)米國的(de),它要(yao)(yao)是(shi)米國的(de)那我就是(shi)火星人)出(chu)了個(ge)所謂復(fu)位開關(guan),試(shi)試(shi)手(shou)(shou)感(gan)暴澀(se),拆開一看(kan)里面是(shi)一個(ge)小(xiao)滾輪,按一下轉1/4圈,為減少(shao)不可(ke)避免的(de)摩擦,上面涂滿了潤滑(hua)油(you)。試(shi)想半(ban)年后里面潤滑(hua)油(you)干了,這個(ge)開關(guan)該怎么用啊。
4、看保護門
用螺絲(si)刀或小鑰匙捅(tong)兩孔(kong)(kong)的一(yi)邊(bian)和三孔(kong)(kong)的下(xia)邊(bian)隨便(bian)一(yi)孔(kong)(kong)。用點(dian)力(li)氣,捅(tong)得進就(jiu)是單邊(bian)保護(hu)門(men),等于沒有(you)。這(zhe)種插座明顯不(bu)夠安全。
5、銅件用料
如果通過(guo)插(cha)孔(kong)(kong)看到是明黃色(se)的(de),那(nei)直(zhi)接(jie)放棄吧。黃銅(tong)(tong)(tong)(tong)輕(qing)易(yi)生(sheng)銹(xiu)(xiu),質地偏軟,時間一長接(jie)觸、導(dao)電(dian)性(xing)能(neng)都(dou)會(hui)下降。如果銅(tong)(tong)(tong)(tong)片(pian)顏色(se)是紫(zi)紅色(se)就比(bi)較好,紫(zi)銅(tong)(tong)(tong)(tong)比(bi)較韌(ren),不輕(qing)易(yi)生(sheng)銹(xiu)(xiu)。直(zhi)接(jie)看還不行,一般還要拆開(kai)看。很多(duo)(duo)插(cha)座都(dou)是插(cha)孔(kong)(kong)這(zhe)里(li)(li)用(yong)紫(zi)銅(tong)(tong)(tong)(tong),里(li)(li)面都(dou)用(yong)黃銅(tong)(tong)(tong)(tong),同樣容易(yi)生(sheng)銹(xiu)(xiu)。即使都(dou)用(yong)紫(zi)銅(tong)(tong)(tong)(tong),也(ye)有高(gao)下之分(fen)。大部(bu)分(fen)品牌的(de)銅(tong)(tong)(tong)(tong)件(jian)都(dou)是好幾塊拼接(jie),用(yong)鉚釘(ding)接(jie)口(kou),這(zhe)樣接(jie)口(kou)處也(ye)會(hui)發熱,影響導(dao)電(dian)。技術比(bi)較現進的(de)品牌會(hui)用(yong)整片(pian)紫(zi)銅(tong)(tong)(tong)(tong)做里(li)(li)面的(de)銅(tong)(tong)(tong)(tong)件(jian),這(zhe)樣導(dao)電(dian)性(xing)能(neng)提高(gao)很多(duo)(duo)的(de)。
6、二三插之間的距離
有些產品沒考慮那么多,二孔和(he)三(san)孔距(ju)離比較近,插了(le)三(san)孔,兩(liang)孔就變擺設了(le),因為插頭大,把地方占了(le)。這些問題在買插座時一定要考慮清楚。
7、電器功率
另(ling)外,家用(yong)電(dian)器(qi)功率越(yue)來越(yue)大,對開(kai)關的(de)負荷要求(qiu)也比較高,特別是在電(dian)器(qi)通(tong)(tong)(tong)電(dian)的(de)一瞬間(很(hen)多劣質開(kai)關就是通(tong)(tong)(tong)電(dian)時被瞬間大電(dian)流燒掉(diao)的(de))。普通(tong)(tong)(tong)插座(zuo)國(guo)家標準(zhun)為10A,而空調插座(zuo)要求(qiu)能(neng)通(tong)(tong)(tong)電(dian)流較大,國(guo)家標準(zhun)為16A。
8、品牌
人們消費注重品牌,一定是有根據的,因開關插座品牌產品有(you)口碑,更可靠,質量好,售后(hou)有(you)保障。