描述
1797-RPFM
根據(jù)名稱不難發(fā)現(xiàn)，交直流電源串?dāng)_成因很大一部分原因，就是這種繼電保護(hù)是由交流電和直流電共同供電，因?yàn)樵诂F(xiàn)在的變電站，所用的電氣設(shè)備以及一些用電裝置都是需要二者共同供電的，這也是提高變電所供電可靠性和效率的最好方法。稍微懂一些電力方面知識(shí)的人就會(huì)知道，交流電的容量要比直流電小得多，并且直流電的可靠性要優(yōu)于交流電，因此一般的電力方面的公司都比較喜歡應(yīng)用直流電源，還有一方面就是因?yàn)橹绷麟娨菀拙S修。交流電和直流電的作用也是不一樣的，因?yàn)榻涣麟姷墓β适潜容^小的，所以多用于照明設(shè)備、打印機(jī)這樣簡(jiǎn)單的設(shè)備中，所占用的空間不大，所起到的作用也不大，但卻必不可少。因此在繼電設(shè)備中必須要應(yīng)用兩者，因此當(dāng)進(jìn)行了一些不當(dāng)?shù)牟僮髦?，在交流回路和直流回路中的一些線圈等會(huì)有不良的反應(yīng)，會(huì)發(fā)生電壓升高的情況，進(jìn)而對(duì)其他的直流回路設(shè)備產(chǎn)生影響，進(jìn)而干擾到正確的操作，當(dāng)斷路器斷開時(shí)，如果發(fā)現(xiàn)所受到的電壓為為無限大，則可以斷定這個(gè)斷路器是理想的，振頻一般就是一千赫茲，雖然這種情況會(huì)僅僅發(fā)生在線圈上，又或者簡(jiǎn)單的引線上，但是卻有可能發(fā)生更大的危險(xiǎn)，那就是尖峰電壓會(huì)升高，變得超出承受范圍。另一方面，如果沒有應(yīng)用理想斷路器，那么所產(chǎn)生的危險(xiǎn)就會(huì)更大：當(dāng)斷路器斷開時(shí)，所在的觸點(diǎn)位置會(huì)會(huì)產(chǎn)生電弧重燃現(xiàn)象，在這種情況下會(huì)產(chǎn)生過電壓，這種過電壓雖然是暫態(tài)的，但卻非常嚴(yán)重，因?yàn)樗鼤?huì)直接傳輸?shù)街绷鞑糠值哪妇€上，進(jìn)而使整個(gè)斷路設(shè)備癱瘓。上面所說的情況，當(dāng)斷路器斷開時(shí)，會(huì)產(chǎn)生暫態(tài)的過電壓，當(dāng)這個(gè)電壓超過了擊穿電壓時(shí)，重燃的電弧會(huì)導(dǎo)致電流發(fā)生變變化，變得時(shí)斷時(shí)續(xù)，而電容的充電也會(huì)發(fā)生影響，變得時(shí)斷時(shí)續(xù)，有時(shí)還會(huì)發(fā)生反向放電的情況，使得暫態(tài)過電壓的震蕩變得更加明顯，加劇了斷路器的穩(wěn)態(tài)的流失，整個(gè)控制系統(tǒng)進(jìn)入癱瘓狀態(tài)。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。
主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫存商家
Agilestar – DWDM-X2-42.94 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-43.73 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-44.53 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-46.12 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-46.92 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-47.72 40km -For Cisco- 10GBASE-DWDM
Agilestar – DWDM-X2-48.51 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-50.12 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-50.92 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-51.72 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-52.52 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-54.13 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-56.55 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-58.17 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-58.98 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-59.79 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-60.61 40km- For Cisco -10GBASE-DWDM
Agilestar – DWDM-XENPAK-30.?33 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-31.?12 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-31.?90 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-32.?68 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-34.?25 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-35.?04 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-35.?82 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-36.?61 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-38.?19 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-38.?98 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-39.?77 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-40.?56 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-42.?14 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-42.?94 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-43.?73 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-44.?53 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-46.?12 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-46.?92 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-47.?72 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-48.?51 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-50.?12 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-50.?92 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-51.?72 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-52.?52 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-54.?13 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-54.?94 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-55.?75 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-56.?55 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-58.?17 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-58.?98 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-59.?79 40km – Cisco – New in Box
Agilestar – DWDM-XENPAK-60.?61 40km – Cisco – New in Box
Agilestar – AT-XPER80 – For use in Allied Telesis – NIB
Agilestar – XFP-10GE-ZR – For Redback – 10GBase-ZR
Agilestar – I-MGBIC-GZX – For Enterasys Networks – NIB
Agilestar – DWDM-XFP-44.53 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-46.92 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-58.98 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-55.75 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-54.94 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-54.13 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-47.72 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-46.12 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-43.73 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-42.14 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-40.56 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-36.61 40km- For Cisco – New in Box
Agilestar – DWDM-XFP-30.33 40km- For Cisco – New in Box
Agilestar – ONS-XC-10G-I2 – For Cisco – NIB
Agilestar – AA1419071-E6 – For Nortel – New in Box
Agilestar – DS-X2-FC10G-SR – For Cisco – NIB
Agilestar – ONS-SI-GE-ZX – For Cisco – New in Box
Agilestar – XFP-10G-ER40 – For Alcatel-Lucent – NIB
Agilestar – 1184560P5 – For use in Adtran – New in Box
Agilestar – OM-10GNI-ER – For Alcatel-Lucent – NIB
Agilestar – 808-38613-AS – For IMC Networks – New in Bo
Agilestar – DS-CWDM4G1470-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1490-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1510-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1530-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1550-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1570-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1590-A?S – For Cisco – New in Box
Agilestar – DS-CWDM4G1610-A?S – For Cisco – New in Box
Agilestar – OC192-XFP-IR2-A?S – For Foundry – New in Box
Agilestar – AS-1FE-BD-10 – For Agilestar – New in Box
Agilestar – AS-1FE-BD-20 – For Agilestar – New in Box
Agilestar – AS-1FE-BD-30 – For Agilestar – New in Box
Agilestar – AS-1FE-BD-40 – For Agilestar – New in Box
Agilestar – AS-1FE-BD-60 – For Agilestar – New in Box
Agilestar – AS-1FE-BD-80 – For Agilestar – New in Box
Agilestar – AS-1FE-BU-10 – For Agilestar – New in Box
Agilestar – AS-1FE-BU-20 – For Agilestar – New in Box
Agilestar – AS-1FE-BU-30 – For Agilestar – New in Box
Agilestar – AS-1FE-BU-40 – For Agilestar – New in Box
Agilestar – AS-1FE-BU-60 – For Agilestar – New in Box
Agilestar – AS-1FE-BU-80 – For Agilestar – New in Box
Agilestar – AS-1GE-BD-10 – For Agilestar – New in Box
Agilestar – AS-1GE-BD-20 – For Agilestar – New in Box
Agilestar – AS-1GE-BD-30 – For Agilestar – New in Box
Agilestar – AS-1GE-BD-40 – For Agilestar – New in Box
Agilestar – AS-1GE-BD-60 – For Agilestar – New in Box
Agilestar – AS-1GE-BU-10 – For Agilestar – New in Box
Agilestar – AS-1GE-BU-20 – For Agilestar – New in Box
Agilestar – AS-1GE-BU-30 – For Agilestar – New in Box
Agilestar – AS-1GE-BU-40 – For Agilestar – New in Box
Agilestar – AS-1GE-BU-60 – For Agilestar – New in Box
Agilestar – AA1403003-E5 – For Nortel – New in Box
Agilestar – 15454-GBIC-30-3 – For Cisco – New in Box
Agilestar – 15454-GBIC-31-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-31-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-32-6?- For Cisco – New in Box
Agilestar – 15454-GBIC-34-2?- For Cisco – New in Box
Agilestar – 15454-GBIC-35-0?- For Cisco – New in Box
Agilestar – 15454-GBIC-35-8?- For Cisco – New in Box
Agilestar – 15454-GBIC-36-6?- For Cisco – New in Box
Agilestar – 15454-GBIC-38-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-38-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-39-7?- For Cisco – New in Box
Agilestar – 15454-GBIC-40-5?- For Cisco – New in Box
Agilestar – 15454-GBIC-42-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-42-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-43-7?- For Cisco – New in Box
Agilestar – 15454-GBIC-44-5?- For Cisco – New in Box
Agilestar – 15454-GBIC-46-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-46-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-47-7?- For Cisco – New in Box
Agilestar – 15454-GBIC-48-5?- For Cisco – New in Box
Agilestar – 15454-GBIC-50-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-50-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-51-7?- For Cisco – New in Box
Agilestar – 15454-GBIC-54-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-54-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-55-7?- For Cisco – New in Box
Agilestar – 15454-GBIC-56-5?- For Cisco – New in Box
Agilestar – 15454-GBIC-58-1?- For Cisco – New in Box
Agilestar – 15454-GBIC-58-9?- For Cisco – New in Box
Agilestar – 15454-GBIC-59-7?- For Cisco – New in Box
Agilestar – 15454-GBIC-60-6?- For Cisco – New in Box
Agilestar – 3HE00070AA – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AB – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AC – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AD – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AE – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AF – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AG – For Alcatel-Lucent – NIB
Agilestar – 3HE00070AH – For Alcatel-Lucent – NIB
Agilestar – 3HE00045AA-AS – For Alcatel – New in Box
Agilestar – 10112 – For Extreme Networks – New in Box
Agilestar – 10113 – For Extreme Networks – New in Box
Agilestar – F5UPGXFPEROPR-A?S – For F5 Networks – New in
Agilestar – XENPAK-1XGE-ER – Juniper – New in Box
Agilestar – 15454-GBIC-52-5?- For Cisco – New in Box
Agilestar – SU69CC-AS – For Marconi – XFP 10GBASE-ER SM
Agilestar – AS-XFP-10G-ER – For Agilestar – New in Box
Agilestar – SFP-GIG-EXTND – For Alcatel-Lucent – NIB
Agilestar – SFP-GIG-47CWD60 – For Alcatel-Lucent -NIB
Agilestar – SFP-GIG-49CWD60 – For Alcatel-Lucent -NIB
Agilestar – SFP-GIG-51CWD60 – For Alcatel-Lucent -NIB
Agilestar – SFP-GIG-53CWD60 – For Alcatel-Lucent – NIB
Agilestar – SFP-GIG-55CWD60 – For Alcatel-Lucent – NIB
Agilestar – SFP-GIG-57CWD60 – For Alcatel-Lucent – NIB
Agilestar – SFP-GIG-59CWD60 – For Alcatel-Lucent – NIB
Agilestar – SFP-GIG-61CWD60 – For Alcatel-Lucent -NIB
Agilestar – SF2G-LX3-5C-47-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-49-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-51-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-53-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-55-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-57-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-59-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX3-5C-61-?AS – For FibroLAN – New in B
Agilestar – XFP-10G-E-OC192?-IR1 – Juniper – New in Box
Agilestar – 10G-XNPK-ER – For Foundry Networks – NIB
Agilestar – 3CXENPAK96 – For use in 3Com – 10GBASE-ER
Agilestar – 1184560P1 – For use in Adtran – New in Box
Agilestar – AS-X2-10G-ER – For Agilestar – New in Box
Agilestar – AS-XEN-10G-ER – For Agilestar – New in Box
Agilestar – SU69CA-AS – For Marconi – XFP 10GBASE-LR SM
Agilestar – 10GBASE-ER-XFP – Enterasys Networks – NIB
Agilestar – E1MG-BXD-40KM-A?S – For Foundry – New in Box
Agilestar – E1MG-BXU-40KM-A?S – For Foundry – New in Box
Agilestar – 15454-GBIC-1470 – For Cisco – New in Box
Agilestar – 15454-GBIC-1490 – For Cisco – New in Box
Agilestar – 15454-GBIC-1510 – For Cisco – New in Box
Agilestar – 15454-GBIC-1530 – For Cisco – New in Box
Agilestar – 15454-GBIC-1550 – For Cisco – New in Box
Agilestar – 15454-GBIC-1570 – For Cisco – New in Box
Agilestar – 15454-GBIC-1590 – For Cisco – New in Box
Agilestar – 15454-GBIC-1610 – For Cisco – New in Box
Agilestar – AS-SFP10G-ER – For Agilestar – New in Box
Agilestar – FTLX1612M3BTL – For Finisar – New In Box
Agilestar – ONS-SE-622-1490 – For Cisco – New In Box
Agilestar – ONS-SE-622-1570 – For Cisco – New In Box
Agilestar – ONS-SE-622-1470 – For Cisco – New In Box
Agilestar – ONS-SE-622-1530 – For Cisco – New In Box
Agilestar – ONS-SE-622-1610 – For Cisco – New In Box
Agilestar – ONS-SE-622-1510 – For Cisco – New In Box
Agilestar – ONS-SE-622-1550 – For Cisco – New In Box
Agilestar – ONS-SE-622-1590 – For Cisco – New In Box
Agilestar – EX-XFP-10GE-ER – Juniper – New in Box
Agilestar – 10124 – For Extreme Networks – New in Box
Agilestar – J8438A – For HP – New in Box
專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫存商家
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