富士V806ICD觸摸屏
富士V806ICD觸摸屏
主要作用
在正常情況下,過(guò)電流脫扣器的銜鐵是釋放著的;一旦發(fā)生嚴(yán)重過(guò)載或短路故障時(shí),與主電路串聯(lián)的線圈就將產(chǎn)生較強(qiáng)的電磁吸力把銜鐵往下吸引而頂開鎖鉤,使主觸點(diǎn)斷開。欠壓脫扣器的工作恰恰相反,在電壓正常時(shí),電磁吸力吸住銜鐵,主觸點(diǎn)才得以閉合。一旦電壓嚴(yán)重下降或斷電時(shí),銜鐵就被釋放而使主觸點(diǎn)斷開。當(dāng)電源電壓恢復(fù)正常時(shí),必須重新合閘后才能工作,實(shí)現(xiàn)了失壓保護(hù)
工作原理
脫扣方式有熱動(dòng)、電磁和復(fù)式脫扣3種。
當(dāng)線路發(fā)生一般性過(guò)載時(shí),過(guò)載電流雖不能使電磁脫扣器動(dòng)作,
但能使熱元件產(chǎn)生一定熱量,促使雙金屬片受熱向上彎曲,推動(dòng)杠桿使搭鉤與鎖扣脫開,將主觸頭分?jǐn)啵袛嚯娫础.?dāng)線路發(fā)生短路或嚴(yán)重過(guò)載電流時(shí),短路電流過(guò)瞬時(shí)脫扣整定電流值,電磁脫扣器產(chǎn)生足夠大的吸力,將銜鐵吸合并撞擊杠桿,使搭鉤繞轉(zhuǎn)軸座向上轉(zhuǎn)動(dòng)與鎖扣脫開,鎖扣在反力彈簧的作用下將三副主觸頭分?jǐn)啵袛嚯娫础?/p>
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PHOTOSWITCH 42GRP-9806 NSPP 42GRP9806
TURCK ELEKTRONIK RSM-RKM-579-20M NSFP RSMRKM57920M
TURCK ELEKTRONIK RSM-579-15M NSFP RSM57915M
SIEMENS 6ES7-138-4CA01-0AA0 NSFP 6ES71384CA010AA0
FURNAS ELECTRIC CO 3RV2-901-1A NSFP 3RV29011A
FURNAS ELECTRIC CO 3RA1-941-1BA00 NSFP 3RA19411BA00
FURNAS ELECTRIC CO 3RT2-015-2BB41 NSFP 3RT20152BB41
SIEMENS 6ES7-392-1BM01-0AA0 NSFP 6ES73921BM010AA0
INTERLINK BT RSM-WKM-579-4M NSFP RSMWKM5794M
INTERLINK BT WSC-RKC-5711-3M NSFP WSCRKC57113M
FURNAS ELECTRIC CO 3RB2-036-1QB0 NSFP 3RB20361QB0
ALLEN BRADLEY 100-C09D10 NSFP 100C09D10
FURNAS ELECTRIC CO 3RV2-011-0KA20 NSFP 3RV20110KA20
ALLEN BRADLEY 700-CRF400DJ NSFP 700CRF400DJ
ALLEN BRADLEY 2711PC-T10C4D1 NSFP 2711PCT10C4D1
TEXAS MICROSYSTEM PF5133HX/512-WH9M USPP PF5133HX512WH9M
FURNAS ELECTRIC CO 3RB2-036-1UB0 NSFP 3RB20361UB0
FURNAS ELECTRIC CO 3RH1-911-2HA22 NSFP 3RH19112HA22
FURNAS ELECTRIC CO 3RT2-916-1BB00 NSFP 3RT29161BB00
FURNAS ELECTRIC CO 3RH1-921-2FA22 NSFP 3RH19212FA22
FURNAS ELECTRIC CO 3RT2-926-1BB00 NSFP 3RT29261BB00
ALLEN BRADLEY 700-CF220D NSFP 700CF220D
MAGNETEK H157 USPP H157
ALLEN BRADLEY 1734-IB8 NSPP 1734IB8