描述
MDX61B0150-503-4-0T
若不止一臺(tái)變壓器時(shí)，運(yùn)行方式往往只允許1-2臺(tái)接地運(yùn)行，設(shè)計(jì)采用中性點(diǎn)零序電流繼電器與經(jīng)相鄰變壓器中性點(diǎn)零序電流繼電器控制的零序電壓繼電器配合使用的變壓器保護(hù)方案，保護(hù)回路設(shè)計(jì)先跳中性點(diǎn)不接地變壓器，然后中性點(diǎn)跳直接接地的變壓器，以防止不接地系統(tǒng)故障點(diǎn)的間歇性弧光過電壓危及電氣設(shè)備的安全。為避免全廠所有變壓器全部被切的嚴(yán)重后果，保護(hù)時(shí)間應(yīng)逐級(jí)配合，先斷開母聯(lián)或分?jǐn)嗦菲鳎俳?jīng)零序電壓元件跳開中心點(diǎn)不接地主變，最后經(jīng)零序電流元件跳開中性點(diǎn)接地主變。對(duì)中性點(diǎn)有可能直接接地運(yùn)行，也有可能不接地運(yùn)行的主變，因失去接地中性點(diǎn)引起的電壓升高，應(yīng)裝設(shè)相應(yīng)的保護(hù)裝置。在直接接地時(shí)用零序電流保護(hù)。在中性點(diǎn)不接地時(shí)用零序電壓保護(hù)或裝設(shè)放電間隙保護(hù)，放到間隙保護(hù)起到過電壓保護(hù)的作用，當(dāng)放電間隙被擊穿形成零序電流通路時(shí)，利用接在放電間隙回路的零序電流保護(hù)，切除該變壓器。變壓器采用放電間隙保護(hù)，放電間隙裝于變壓器中性點(diǎn)與地線之間、有棒形、球形、角形等多種形式，實(shí)際安裝中可以棒形用得最多，零序電壓保護(hù)動(dòng)作電壓按發(fā)生單相接地故障時(shí)保護(hù)安裝處可能出現(xiàn)最大零序電壓整定。對(duì)變壓器高壓側(cè)中性點(diǎn)直接接地的自耦變壓器和三繞組變壓器采用零序過電流保護(hù)，取自變壓器中性點(diǎn)的零序CT安裝無方向零序保護(hù)，在主變兩側(cè)分別裝上零序保護(hù)，了為滿足選擇性可增設(shè)零序方向元件。方向元件用各斷路器側(cè)CT的自產(chǎn)零序電流。主變中性點(diǎn)零序電流互感器的極性接線可以將中性點(diǎn)零序電流保護(hù)指向本側(cè)母線或主變側(cè)。采用斷路器處的零序電流保護(hù)，和一般高中壓側(cè)方向指向各自的母線，但當(dāng)中壓側(cè)不無源時(shí)，高壓側(cè)零序方向可指向主變。指向母線保護(hù)的范圍以為斷路器電流互感器安裝處開始，需要與線路零序保護(hù)配合。指向主變變壓器，需要主變壓器另一側(cè)出線的接地保護(hù)相配合。采用主變中性點(diǎn)處地零序電流保護(hù)，則保護(hù)范圍比斷路器處零序電流保護(hù)比要寬一些。小浪底目前運(yùn)行的主變中性點(diǎn)零序電流保護(hù)無方向，這樣的整定配合比較清晰方便，一是限制跳開母聯(lián)斷路器，二是限制跳開本側(cè)開關(guān)。
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
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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
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Agilestar – DS-SFP-FC4G-MR – For Cisco – New in Box
Agilestar – 808-38205-AS – For IMC Networks – New in Bo
Agilestar – 808-38222-AS – For IMC Networks – New in Bo
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Agilestar – SF1G-LX6C-27-AS – For FibroLAN – New in Box
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Agilestar – SF1G-LX6C-31-AS – For FibroLAN – New in Box
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Agilestar – SF1G-LX6C-37-AS – For FibroLAN – New in Box
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Agilestar – SFP-GIG-BX-U – For Alcatel-Lucent – NIB
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Agilestar – BTI-MGBIC-GBU-L?C-AS – For Telco – New in Bo
Agilestar – NTTP04CF – For Nortel – New in Box
Agilestar – SFP-1OC48-SR – Juniper – New in Box
Agilestar – SU66AA – For use in Marconi – NIB
Agilestar – LCP-155B4MSRT-A?S – For Delta – New in Box
Agilestar – SU57AF-AS-ZX – For Marconi – New in Box
Agilestar – 808-38204-AS – For IMC Networks – New in Bo
Agilestar – 808-38215-AS – For IMC Networks – New in Bo
Agilestar – 808-38232-AS – For IMC Networks – New in Bo
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Agilestar – E1MG-SX-OM – For Foundry Networks – NIB
Agilestar – FTLF1422P1BTL-A?S – For Finisar – New in Box
Agilestar – SPBD-1250A4Q1RD?-AS – For Delta – New in Box
Agilestar – SPBD-1250B4Q1RD?-AS – For Delta – New in Box
Agilestar – ONS-SI-622-I1 – For Cisco – New In Box
Agilestar – 200E-XBR-000802?-AS – For Brocade – New in B
Agilestar – ONS-SE-4G-MM – For Cisco – New in Box
Agilestar – SF1G-LX5-AS – For FibroLAN – New in Box
Agilestar – ONS-SE-100-FX – For Cisco – New in Box
Agilestar – ONS-SE-G2F-LX – For Cisco – New in Box
Agilestar – NTTP03CF – For Nortel – New in Box
Agilestar – TEG-MGBS40 – For TRENDnet- New in Box
Agilestar – SFP-OC12-IR – Juniper – New in Box
Agilestar – LCP-155A4HDRT-A?S – For Delta – New in Box
Agilestar – LCP-155B4JDRT-A?S – For Delta – New in Box
Agilestar – GSFIBER-SFP-50K – For Six Net – New in Box
Agilestar – GSFIBER-SFP-50K – Sixnet Networks – NIB
Agilestar – 808-38214-AS – For IMC Networks – New in Bo
Agilestar – SF1G-LX5C-27-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-29-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-31-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-33-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-35-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-37-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-39-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-41-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-43-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-45-AS – For FibroLAN – New in Box
Agilestar – 1200482G1 – For use in Adtran – New in Box
Agilestar – 1184561P4 – For use in Adtran – New in Box
Agilestar – I-MGBIC-GTX – For Enterasys Networks – NIB
Agilestar – SPBD-1250A4Q1R-?AS – For Delta – New in Box
Agilestar – SPBD-1250B4Q1R-?AS – For Delta – New in Box
Agilestar – TN-SFP-OC12S – Transition Networks – NIB
Agilestar – ALL4753 – For Allnet Networks – NIB
Agilestar – GBIC-LH-70 – For Alcatel-Lucent – NIB
Agilestar – SFPGE-18 – For Riverstone Networks – NIB
Agilestar – X2-10GB-CX4 – For Cisco – New in Box
Agilestar – BTI-GBIC-GLX-SE?-AS – For Telco – New in Box
Agilestar – BTI-GBIC-GLX-EX?-AS – For Telco – New in Box
Agilestar – HFCT-5760ATP – For Aglilent Avago – NIB
Agilestar – HFCT-5760ATL – For Aglilent Avago – NIB
Agilestar – GP-SFP2-MTRJ-1S – Force 10 Networks -NIB
Agilestar – E1MG-100BXD – For Foundry Networks – NIB
Agilestar – NTTP02ED – For Nortel – New in Box
Agilestar – 3HE00868AA – For Alcatel-Lucent – NIB
Agilestar – 3HE00868AB – For Alcatel-Lucent – NIB
Agilestar – E1MG-100BXU – For Foundry Networks – NIB
Agilestar – SFP-1GE-LH – Juniper – New in Box
Agilestar – SFP-OC3-LR2 – For Cisco – New in Box
Agilestar – SFP-OC48-IR1 – For Cisco – New in Box
Agilestar – 0231A085-AS – For Huawei – New in Box
Agilestar – FTRJ1422P1BTL-A?S – For Finisar – New in Box
Agilestar – GBIC 1000LZ-AS – For Aruba – New in Box
Agilestar – LCP-1250D4RDRT-?AS – For Delta – New in Box
Agilestar – 10720-GE-SFP-LH – For Cisco – New in Box
Agilestar – 0231A563 – For use in Huawei – New in Box
Agilestar – 2311415 – For use in Huawei – New in Box
Agilestar – GSFIBER-SFP-30K – For Six Net – New in Box
Agilestar – ASCG-1470 – For Agilestar – New in Box
Agilestar – ASCG-1490 – For Agilestar – New in Box
Agilestar – ASCG-1510 – For Agilestar – New in Box
Agilestar – ASCG-1530 – For Agilestar – New in Box
Agilestar – ASCG-1550 – For Agilestar – New in Box
Agilestar – ASCG-1570 – For Agilestar – New in Box
Agilestar – ASCG-1590 – For Agilestar – New in Box
Agilestar – ASCG-1610 – For Agilestar – New in Box
Agilestar – ASCS-1270 – For Agilestar – New in Box
Agilestar – ASCS-1290 – For Agilestar – New in Box
Agilestar – ASCS-1310 – For Agilestar – New in Box
Agilestar – ASCS-1330 – For Agilestar – New in Box
Agilestar – ASCS-1350 – For Agilestar – New in Box
Agilestar – ASCS-1370 – For Agilestar – New in Box
Agilestar – ASCS-1390 – For Agilestar – New in Box
Agilestar – ASCS-1470 – For Agilestar – New in Box
Agilestar – ASCS-1490 – For Agilestar – New in Box
Agilestar – ASCS-1510 – For Agilestar – New in Box
Agilestar – ASCS-1530 – For Agilestar – New in Box
Agilestar – ASCS-1550 – For Agilestar – New in Box
Agilestar – ASCS-1570 – For Agilestar – New in Box
Agilestar – ASCS-1590 – For Agilestar – New in Box
Agilestar – ASCS-1610 – For Agilestar – New in Box
Agilestar – SU68CA-AS-1470 – For Marconi – New in Box
Agilestar – SU68CB-AS-1490 – For Marconi – New in Box
Agilestar – SU68CC-AS-1510 – For Marconi – New in Box
Agilestar – SU68CD-AS-1530 – For Marconi – New in Box
Agilestar – SU68CE-AS-1550 – For Marconi – New in Box
Agilestar – SU68CF-AS-1570 – For Marconi – New in Box
Agilestar – SU68CG-AS-1590 – For Marconi – New in Box
Agilestar – SU68CH-AS-1610 – For Marconi – New in Box
Agilestar – SU68CN-AS-1470 – For Marconi – New in Box
Agilestar – SU68CO-AS-1490 – For Marconi – New in Box
Agilestar – SU68CP-AS-1510 – For Marconi – New in Box
Agilestar – SU68CQ-AS-1530 – For Marconi – New in Box
Agilestar – SU68CR-AS-1550 – For Marconi – New in Box
Agilestar – SU68CS-AS-1570 – For Marconi – New in Box
Agilestar – SU68CT-AS-1590 – For Marconi – New in Box
Agilestar – SU68CU-AS-1610 – For Marconi – New in Box
Agilestar – GSFIBER-SFP-30K – Sixnet Networks – NIB
Agilestar – ONS-SI-100-FX – For Cisco – New in Box
Agilestar – HFCT-5760TP – For Aglilent Avago – NIB
Agilestar – HFCT-5760TL – For Aglilent Avago – NIB
Agilestar – E1MG-100FX-IR – For Foundry Networks – NIB
Agilestar – ITV-1KSG-NA-100?G – For use in McAfee – NIB
Agilestar – ITV-1KSG-NA-100?A – For use in McAfee – NIB
Agilestar – NTTP03BF – For Nortel – New in Box
Agilestar – 3HE00024AA – For Alcatel-Lucent – NIB
Agilestar – 3HE00028AA – For Alcatel-Lucent – NIB
Agilestar – MINIGBIC-1000T – For Alcatel-Lucent – NIB
Agilestar – MGBIC-LC05 – For Enterasys Networks – NIB
Agilestar – FIM32152W47 – For Fujitsu – New In Box
Agilestar – FIM32152W49 – For Fujitsu – New In Box
Agilestar – FIM32152W51 – For Fujitsu – New In Box
Agilestar – FIM32152W53 – For Fujitsu – New In Box
Agilestar – FIM32152W55 – For Fujitsu – New In Box
Agilestar – FIM32152W57 – For Fujitsu – New In Box
Agilestar – FIM32152W59 – For Fujitsu – New In Box
Agilestar – FIM32152W61 – For Fujitsu – New In Box
Agilestar – AT-G8BD-14-AS – For Allied Telesyn – New in
Agilestar – GLC-FE-100FX-RG?D-AS – For Cisco – New in Bo
Agilestar – SFP-FE-FX-LX10 – For Redback – New in Box
Agilestar – SFP-FE-FX-LX10 – For Redback – New in Box
Agilestar – MGBIC-MT01 – For Enterasys Networks – NIB
Agilestar – 6800-SFP-SX-AS – For Alcatel – New in Box
Agilestar – 808-38105-AS – For IMC Networks – New in Bo
Agilestar – AFCT-5715ALZ-AS – For Agilent-Avago – New i
Agilestar – AFCT-5715APZ-AS – For Agilent-Avago – New i
Agilestar – SF1G-LX6C-47-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-49-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-51-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-53-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-55-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-57-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-59-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-61-AS – For FibroLAN – New in Box
Agilestar – 3HE00027AA – For Alcatel-Lucent – NIB
Agilestar – AS-ZX – For Agilestar – New in Box
Agilestar – ASG-ZX – For Agilestar – New in Box
Agilestar – BTI-MGBIC-GZX-L?C-AS – For Telco – New in Bo
Agilestar – SF1G-LX4-AS – For FibroLAN – New in Box
Agilestar – OC48-SFP-SR1 – For Foundry Networks – NIB
Agilestar – E1MTG-SX – For Foundry Networks – NIB
Agilestar – SFP-OC48-LR1 – For Foundry Networks – NIB
Agilestar – GPIM-02-C – For Enterasys Networks – NIB
Agilestar – OAG-SFP-GIG-SX – For Alcatel-Lucent – NIB
Agilestar – OAG-SFP-GIG-T – For Alcatel-Lucent – NIB
Agilestar – OAW-GBIC-T – For Alcatel-Lucent – NIB
Agilestar – SFP-OC48-SR – For Cisco – New in Box
Agilestar – AFCT-5715LZ-AS – For Agilent-Avago – New in
Agilestar – AFCT-5715PZ-AS – For Agilent-Avago – New in
Agilestar – FTLF1324P2BTV-A?S – For Finisar – New in Box
Agilestar – LCP-155A4HSRT-A?S – For Delta – New in Box
Agilestar – LCP-155B4JSRT-A?S – For Delta – New in Box
Agilestar – SFPM1000LZ – For Asante Networks – NIB
Agilestar – 200E-XBR-000077 – For use in Brocade – NIB
Agilestar – 200E-XBR-000083 – For use in Brocade – NIB
Agilestar – 808-38115-AS – For IMC Networks – New in Bo
Agilestar – FCL-8520-3-AS – For Finisar – New in Box
Agilestar – FTRJ1321P1BTL-A?S – For Finisar – New in Box
Agilestar 1.25Gbps SFP Transceiver ONS-SI-GE-ZX-AS
One-day shipping available
Agilestar – CWDM-GBIC-1470 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1490 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1510 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1530 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1550 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1570 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1590 – For Cisco – New in Box
Agilestar – CWDM-GBIC-1610 – For Cisco – New in Box
Agilestar – ABCU-5710RZ-MR-?AS – For Agilent-Avago – New
Agilestar – SF1G-LX5C-47-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-49-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-51-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-53-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-55-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-57-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-59-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX5C-61-AS – For FibroLAN – New in Box
Agilestar – ONS-SI-100-LX10 – For Cisco – New in Box
Agilestar – 02312189-AS – For Huawei – New in Box
Agilestar – SFP-OC12-SR-AS – For Cisco – New in Box
Agilestar – AGM733 – For use in Netgear – New in Box
Agilestar – E1G-LH – For Foundry Networks – New in Box
Agilestar – OC12-SFP-IR1 – For Foundry Networks – NIB
Agilestar – OC12-SFP-MM – For Foundry Networks – NIB
Agilestar – J4860C – For HP – New in Box
Agilestar – E1MG-LHA – For Foundry Networks – NIB
Agilestar – 1184544P2 – For use in Adtran – New in Box
Agilestar – NTTP02CD – For Nortel – New in Box
Agilestar – NTTP04BF – For Nortel – New in Box
Agilestar – SFP-OC3-SR – Juniper – New in Box
Agilestar – SFP-OC12-SR – Juniper – New in Box
Agilestar – SFP-FE-FX – For Redback – New in Box
Agilestar – SFP-GE-Z – For Redback – New in Box
Agilestar – 15454-GBIC-ZX – For Cisco – New in Box
Agilestar – GLC-BX-D – For Cisco – New in Box
Agilestar – GLC-BX-U – For Cisco – New in Box
Agilestar – GLC-FE-100BX-D – For Cisco – New in Box
Agilestar – GLC-FE-100BX-U – For Cisco – New in Box
Agilestar – SFP-DUAL-MM – For Alcatel-Lucent – NIB
Agilestar – SFP-GE-Z – For Cisco – New in Box
Agilestar – SFP-OC12-IR1 – For Cisco – New in Box
Agilestar – SFP-OC12-LR1 – For Cisco – New in Box
Agilestar – SFP-OC12-SR – For Cisco – New in Box
Agilestar – SFP-OC3-LR1- For Cisco – New in Box
Agilestar – 10058 – For Extreme Networks – New in Box
Agilestar – 10059 – For Extreme Networks – New in Box
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