ICS TRIPLEX T8150控制模塊,電源模塊
編程300分鐘（5小時(shí)）作為停止冷卻時(shí)間常數。因此，在2次冷啟動(dòng)或1次熱啟動(dòng)后，停止的電機將被阻止啟動(dòng)5小時(shí)。?由于電機運行時(shí)轉子冷卻速度更快，因此運行冷卻時(shí)間常數的合理設置可能是停止冷卻時(shí)間常數或150分鐘的一半。GE Power Management 469電機管理繼電器D-1附錄D D.1電流互感器D附錄D附錄DD.1電流互感器D.1.1 50接地故障CT:0.025 A CT應使用專(zhuān)門(mén)設計用于匹配GE Power Management電機保護繼電器接地故障輸入的CT，以確保正確的性能。這些CT具有50:0.025A（2000:1的比率），能夠以最小的誤差感測繼電器設置范圍內的低泄漏電流。有三種尺寸可供選擇，分別為3?“、5?”、，HGF3/HGF5尺寸HGF8尺寸D-2 469電機管理繼電器GE電源管理D.1電流互感器附錄D D.1.2 5 A次級CT的接地故障CTS對于低電阻或牢固接地系統，應使用5 A次級電流互感器。有兩種尺寸可用于5?”或13”×16”窗口?？蛇x擇各種初級電流互感器（50至250）.GCT5 GCT16尺寸尺寸GE Power Management 469電機管理繼電器D-3附錄D D.1電流互感器D D.1.3相位CTS電流互感器的最常見(jiàn)比例為50:5至1000:5，可用作電機保護繼電器的相位電流輸入。這些帶有安裝硬件，也可用于1A輔助設備。電壓等級：600 V BIL 10 kV。GE Power Management 469電機管理繼電器E-1附錄E E.1圖和表E附錄E E.1.1圖和表E.1.1概述1.1.1描述469電機控制繼電器是一種基于微處理器的繼電器，設計用于保護和管理中、大馬力電機和驅動(dòng)設備。469配備了六個(gè)輸出繼電器，用于跳閘、報警和啟動(dòng)塊。電機保護、故障診斷、功率計量和RTU功能集成在一個(gè)經(jīng)濟型抽出式組件中。下面的單線(xiàn)圖說(shuō)明了使用ANSI（美國國家標準協(xié)會(huì )）設備編號的469功能。圖1–1：?jiǎn)尉€(xiàn)圖典型應用包括：此處詳細介紹了一些保護亮點(diǎn)；完整列表如下所示。四個(gè)可分配的數字輸入可配置用于許多不同的功能，包括轉速表或通用跳閘和具有可編程名稱(chēng)的報警。熱模型包括不平衡偏置、RTD反饋和指數冷卻。除了15條標準過(guò)載曲線(xiàn)外，還有一條定制曲線(xiàn)特征和一條專(zhuān)門(mén)為高慣性負載啟動(dòng)而設計的曲線(xiàn)，?泵?風(fēng)機?壓縮機?磨機?粉碎機?擠出機?除渣機?精煉機?起重機?輸送機?冷卻器?破碎機?鼓風(fēng)機1-2 469電機管理繼電器GE Multilin 1.1概述1簡(jiǎn)介1當加速時(shí)間超過(guò)安全停轉時(shí)間時(shí)。為雙速電機提供第二過(guò)載曲線(xiàn)。使用GE Power Management 50:0.025接地CT可以檢測到低至0.25 A的接地故障或接地泄漏。還提供了用于相位差保護的CT輸入。提供的12個(gè)RTD輸入可以針對不同的RTD類(lèi)型單獨進(jìn)行現場(chǎng)編程。電壓互感器輸入允許基于電壓和功率量的多種保護功能。四個(gè)4至20 mA模擬輸入可用于任何傳感器的跳閘和報警
Program 300 minutes (5 hours) as the stopped cool time constant. Thus after 2 cold or 1 hot start, a stopped motor will be blocked from starting for 5 hours. ? Since the rotor cools faster when the motor is running, a reasonable setting for the running cool time constant might be half the stopped cool time constant or 150 minutes. GE Power Management 469 Motor Management Relay D-1 APPENDIX D D.1 CURRENT TRANSFORMERS D APPENDIX D APPENDIX DD.1 CURRENT TRANSFORMERS D.1.1 GROUND FAULT CTS FOR 50:0.025 A CTs that are specially designed to match the ground fault input of GE Power Management motor protection relays should be used to ensure correct performance. These CTs have a 50:0.025A (2000:1 ratio) and can sense low leakage currents over the relay setting range with minimum error. Three sizes are available with 3?", 5?", or 8" diameter windows. HGF3 / HGF5 DIMENSIONS HGF8 DIMENSIONS D-2 469 Motor Management Relay GE Power Management D.1 CURRENT TRANSFORMERS APPENDIX D D D.1.2 GROUND FAULT CTS FOR 5 A SECONDARY CT For low resistance or solidly grounded systems, a 5 A secondary CT should be used. Two sizes are available with 5?” or 13” × 16” windows. Various Primary amp CTs can be chosen (50 to 250). GCT5 GCT16 DIMENSIONS DIMENSIONS GE Power Management 469 Motor Management Relay D-3 APPENDIX D D.1 CURRENT TRANSFORMERS D D.1.3 PHASE CTS Current transformers in most common ratios from 50:5 to 1000:5 are available for use as phase current inputs with motor protection relays. These come with mounting hardware and are also available with 1 A secondaries. Voltage class: 600 V BIL 10 kV. GE Power Management 469 Motor Management Relay E-1 APPENDIX E E.1 FIGURES AND TABLES E APPENDIX E APPENDIX EE.1 FIGURES AND TABLES E.1.1 1.1OVERVIEW 1.1.1 DESCRIPTION The 469 Motor Management Relay is a microprocessor based relay designed for the protection and management of medium and large horsepower motors and driven equipment. The 469 is equipped with six output relays for trips, alarms, and start blocks. Motor protection, fault diagnostics, power metering, and RTU functions are integrated into one economical drawout package. The single-line diagram below illustrates the 469 functionality using ANSI (American National Standards Institute) device numbers. Figure 1–1: SINGLE LINE DIAGRAM Typical applications include: Some of the protection highlights are detailed here; a complete list is shown below. Four assignable digital inputs may be configured for a number of different features including tachometer or generic trip and alarm with a programmable name. The thermal model incorporates unbalance biasing, RTD feedback, and exponential cooling. In addition to the 15 standard overload curves, there is a custom curve feature and a curve specifically designed for the starting of high inertia loads, ? Pumps ? Fans ? Compressors ? Mills ? Shredders ? Extruders ? Debarkers ? Refiners ? Cranes ? Conveyors ? Chillers ? Crushers ? Blowers 1-2 469 Motor Management Relay GE Multilin 1.1 OVERVIEW 1 INTRODUCTION 1 when the acceleration time exceeds the safe stall time. A second overload curve is provided for two-speed motors. Ground faults or earth leakage as low as 0.25 A may be detected using the GE Power Management 50:0.025 Ground CT. CT inputs for phase differential protection are also provided. The 12 RTD inputs provided may be individually field programmed for different RTD types. Voltage transformer inputs allow for numerous protection features based on voltage and power quantities. Four 4 to 20 mA analog inputs may be used for tripping and alarming on any transducer
