描述
MDX61B0150-503-4-0T
若不止一台变压器时,运行方式往往只允许1-2台接地运行,设计采用中性点零序电流继电器与经相邻变压器中性点零序电流继电器控制的零序电压继电器配合使用的变压器保护方案,保护回路设计先跳中性点不接地变压器,然后中性点跳直接接地的变压器,以防止不接地系统故障点的间歇性弧光过电压危及电气设备的安全。为避免全厂所有变压器全部被切的严重后果,保护时间应逐级配合,先断开母联或分断路器,再经零序电压元件跳开中心点不接地主变,最后经零序电流元件跳开中性点接地主变。对中性点有可能直接接地运行,也有可能不接地运行的主变,因失去接地中性点引起的电压升高,应装设相应的保护装置。在直接接地时用零序电流保护。在中性点不接地时用零序电压保护或装设放电间隙保护,放到间隙保护起到过电压保护的作用,当放电间隙被击穿形成零序电流通路时,利用接在放电间隙回路的零序电流保护,切除该变压器。变压器采用放电间隙保护,放电间隙装于变压器中性点与地线之间、有棒形、球形、角形等多种形式,实际安装中可以棒形用得最多,零序电压保护动作电压按发生单相接地故障时保护安装处可能出现最大零序电压整定。对变压器高压侧中性点直接接地的自耦变压器和三绕组变压器采用零序过电流保护,取自变压器中性点的零序CT安装无方向零序保护,在主变两侧分别装上零序保护,了为满足选择性可增设零序方向元件。方向元件用各断路器侧CT的自产零序电流。主变中性点零序电流互感器的极性接线可以将中性点零序电流保护指向本侧母线或主变侧。采用断路器处的零序电流保护,和一般高中压侧方向指向各自的母线,但当中压侧不无源时,高压侧零序方向可指向主变。指向母线保护的范围以为断路器电流互感器安装处开始,需要与线路零序保护配合。指向主变变压器,需要主变压器另一侧出线的接地保护相配合。采用主变中性点处地零序电流保护,则保护范围比断路器处零序电流保护比要宽一些。小浪底目前运行的主变中性点零序电流保护无方向,这样的整定配合比较清晰方便,一是限制跳开母联断路器,二是限制跳开本侧开关。
产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。
主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB ,AB ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。 专业销售进口DCS PLC系统备件模块
Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA 专业销售进口DCS PLC系统备件模块 15天包退换 一年质保 大量现货 国内实力库存商家
Agilestar – I-MGBIC-GSX – For Enterasys Networks – NIB
Agilestar – OAG-SFP-GIG-LX – For Alcatel-Lucent – NIB
Agilestar – OC12-SFP-IR – For Alcatel-Lucent – NIB
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
Agilestar – LCP-155B4MDRT-AS – For Delta – New in Box
Agilestar – SF1G-LX6C-27-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-29-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-31-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-33-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-35-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-37-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-39-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-41-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-43-AS – For FibroLAN – New in Box
Agilestar – SF1G-LX6C-45-AS – For FibroLAN – New in Box
Agilestar – 02312191-AS – For Huawei – New in Box
Agilestar – J4860A – For HP – New in Box
Agilestar – J4860B – For HP – New in Box
Agilestar – SFP-GIG-BX-D – For Alcatel-Lucent – NIB
Agilestar – SFP-GIG-BX-U – For Alcatel-Lucent – NIB
Agilestar – DGS-708 – For use in D-Link – New in Box
Agilestar – OC12-SFP-LR1 – For Foundry Networks – NIB
Agilestar – EX-SFP-1GE-LX40K – Juniper – New in Box
Agilestar – SFP-100-LC-SM40 – For Alcatel-Lucent – NIB
Agilestar – SFP-DUAL-SM10 – For Alcatel-Lucent – NIB
Agilestar – FTLF1421P1BTL-AS – For Finisar – New in Box
Agilestar – FTR-1419-AS – For Finisar – New in Box
Agilestar – SFP M1000LZ-AS – For Asante – New in Box
Agilestar – SMCBGZLCX1-AS – For SMC – New in Box
Agilestar – SMCBGZSCX1-AS – For SMC – New in Box
Agilestar – SPBD-1250A4Q1RT-AS – For Delta – New in Box
Agilestar – SPBD-1250B4Q1RT-AS – For Delta – New in Box
Agilestar – ONS-GC-GE-ZX – For Cisco – New in Box
Agilestar – AS-ZX-120 – For Agilestar – New in Box
Agilestar – FTLF1421P1BCL-AS – For Finisar – New in Box
Agilestar – LC-GBIC-LX-AS – For Aruba – New in Box
Agilestar – C6400-GBIC-ZX – For Cisco – New in Box
Agilestar – BTI-MGBIC-GBD-LC-AS – For Telco – New in Bo
Agilestar – BTI-MGBIC-GBU-LC-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-AS – 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
Agilestar -RX-70KM-SFP – Juniper – New in Box
Agilestar – RX-70KM-SFP – For Juniper Networks – NIB
Agilestar – FTLX8571D3BCV-AS – For Finisar – New in Box
Agilestar – E1MG-SX-OM – For Foundry Networks – NIB
Agilestar – FTLF1422P1BTL-AS – 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-AS – For Delta – New in Box
Agilestar – LCP-155B4JDRT-AS – 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-AS – 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-100G – For use in McAfee – NIB
Agilestar – ITV-1KSG-NA-100A – 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-RGD-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-LC-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-AS – For Finisar – New in Box
Agilestar – LCP-155A4HSRT-AS – For Delta – New in Box
Agilestar – LCP-155B4JSRT-AS – 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-AS – 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
专业销售进口DCS PLC系统备件模块
PLC模块,可编程控制器,CPU模块,IO模块,AI模块,通讯模块。AB/施耐德/ABB/GE/本特利/西屋/英维斯/霍尼韦尔/黑马/FU克斯波罗
15天包退换 一年质保 大量现货 国内实力库存商家