vti_encoding:SR|utf8-nl vti_timelastmodified:TR|21 Mar 2013 01:19:06 -0000 vti_extenderversion:SR|12.0.0.0 vti_author:SR|JRE505-BF058AD8\\JRE505 vti_modifiedby:SR|USER-AVGPHKC51E\\Administrator vti_nexttolasttimemodified:TW|10 Jun 2008 08:15:15 -0000 vti_timecreated:TR|24 May 2008 01:13:07 -0000 vti_title:SR|CTT-8 vti_thicketdir:SW|CTT-8.files vti_timelastindexed:TW|21 Mar 2013 01:19:06 -0000 vti_backlinkinfo:VX|cpxx.files/sheet001.htm cpxx.htm vti_cacheddtm:TX|21 Mar 2013 01:19:06 -0000 vti_filesize:IR|31097 vti_cachedtitle:SR|CTT-8 vti_cachedbodystyle:SR| vti_cachedlinkinfo:VX|H|CTT-8.files/filelist.xml S|images/bjtp/dbj.gif S|images/bjtp/btbj.gif S|menu.js S|images/bjtp/wzbj.gif S|images/bjtp/wzbj.gif H|cpxx.htm H|cpxx.htm H|cpxx.htm S|images/bjtp/wzbj.gif S|images/bjtp/wzbj.gif S|images/bjtp/wzbj.gif X|CTT-8.files/image001.jpg S|CTT-8.files/image002.jpg X|CTT-8.files/image003.jpg S|CTT-8.files/image004.jpg X|CTT-8.files/image005.png S|CTT-8.files/image006.jpg S|images/bjtp/wzbj.gif S|images/bjtp/wzbj.gif H|mailto:info@jre.com.cn H|http://www.jre.com.cn H|http://www.cnjre.cn vti_cachedsvcrellinks:VX|FHUS|CTT-8.files/filelist.xml FSUS|images/bjtp/dbj.gif FSUS|images/bjtp/btbj.gif NSUS|menu.js FSUS|images/bjtp/wzbj.gif FSUS|images/bjtp/wzbj.gif FHUS|cpxx.htm FHUS|cpxx.htm FHUS|cpxx.htm FSUS|images/bjtp/wzbj.gif FSUS|images/bjtp/wzbj.gif FSUS|images/bjtp/wzbj.gif FXUS|CTT-8.files/image001.jpg FSUS|CTT-8.files/image002.jpg FXUS|CTT-8.files/image003.jpg FSUS|CTT-8.files/image004.jpg FXUS|CTT-8.files/image005.png FSUS|CTT-8.files/image006.jpg FSUS|images/bjtp/wzbj.gif FSUS|images/bjtp/wzbj.gif NHUS|mailto:info@jre.com.cn NHHS|http://www.jre.com.cn NHHS|http://www.cnjre.cn vti_cachedneedsrewrite:BR|false vti_cachedhasbots:BR|false vti_cachedhastheme:BR|false vti_cachedhasborder:BR|false vti_metatags:VR|HTTP-EQUIV=Content-Language zh-cn HTTP-EQUIV=Content-Type text/html;\\ charset=gb2312 keywords CTT-8 description \\ CTT-8\\ \\ \\ \\ \\ DEVICES\\ FOR\\ PROTECTION,\\ CONTROL,\\ THERMIC\\ MONITORING\\ OF\\ TRANSFORMERS,\\ \\ \\ \\ \\ \\ TEMPERATURE\\ DISPLAY\\ \\ \\ CTT\\ control\\ units\\ show\\ normal\\ temperatures\\ on\\ measurement\\ channels\\ and\\ higher\\ temperatures\\ on\\ large\\ displays.\\ Using\\ the\\ “T-Max”\\ function\\ it\\ is\\ possibile\\ to\\ recall\\ and\\ display\\ the\\ maximum\\ temperatures\\ which\\ have\\ occured\\ in\\ each\\ channel.\\ \\ \\ DIAGNOSTIC\\ \\ \\ Electronic\\ relays\\ contain\\ many\\ self-diagnostic\\ functions\\ to\\ prevent\\ the\\ unseen\\ malfunctioning\\ of\\ system\\ components\\ which\\ could\\ lead\\ to\\ possibile\\ dangerous\\ conditions\\ and\\ unsafe\\ operation\\ of\\ machines.\\ \\ \\ ALARMS\\ AND\\ INDICATORS\\ \\ \\ CTT\\ controls\\ units\\ are\\ equipped\\ with\\ light\\ indicators\\ and\\ alarms\\ relays\\ whose\\ change\\ of\\ state\\ is\\ set\\ during\\ the\\ programming\\ procedure:\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Led\\ Prog.:\\ indicating\\ the\\ programming\\ phase\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Led\\ Fault\\ :\\ indicatine\\ fault\\ trip\\ on\\ Pt100\\ thermal\\ probe\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Led\\ Fan:\\ indicating\\ alarm\\ ventilation\\ threshould\\ exceeded\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Led\\ Alarm:\\ indicating\\ alarm\\ threshould\\ exceeded\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Led\\ Trip:\\ indicating\\ the\\ trip\\ threshould\\ exceeded\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Led\\ Hot:\\ indicating\\ display\\ of\\ higher\\ temperature\\ channels\\ \\ \\ OUTPUT\\ RELAIS\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Fan\\ Relay:\\ intervening\\ when\\ the\\ fan\\ switch-on\\ threshould\\ is\\ exceeded\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Fault\\ Relay:\\ intervening\\ when\\ there\\ is\\ abnormally\\ on\\ Pt100\\ probe(relay\\ normally\\ excited,\\ therefore\\ fail\\ safe)\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Alarm\\ Relay:\\ intervening\\ when\\ alarm\\ threshould\\ is\\ exceeded\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Trip\\ Relay:\\ intervening\\ when\\ the\\ trip\\ threshould\\ is\\ exceeded\\ \\ \\ DIAGNOSTIC\\ \\ \\ The\\ device\\ is\\ provided\\ of\\ the\\ thermic\\ probes\\ diagnostic\\ functions.\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Probe\\ Pt100\\ interrupted:\\ signalling\\ on\\ the\\ display\\ of\\ the\\ message\\ OPE\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Probe\\ in\\ short\\ circiut:\\ signalling\\ on\\ the\\ display\\ of\\ the\\ message\\ SHr\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Probe\\ out\\ of\\ order\\ for\\ the\\ temperaturereading\\ wrong:\\ signalling\\ on\\ the\\ display\\ of\\ the\\ message\\ FDC\\ \\ \\ COMMUNICATION\\ INTERFACE\\ \\ \\ CTT\\ control\\ unit\\ can\\ be\\ supplied\\ with\\ RS232\\ and\\ RS485\\ serial\\ connection\\ for\\ communication\\ with\\ PCs\\ or\\ data\\ acquisition\\ control\\ systems.\\ The\\ communication\\ protocol\\ used\\ is\\ Modbus-Rtu\\ \\ \\ MEASUREMENT\\ INPUTS\\ \\ \\ For\\ the\\ measurement\\ of\\ temperature\\ ,\\ the\\ control\\ units\\ must\\ be\\ provided\\ with\\ \\ Rtd\\ thermal\\ probe\\ of\\ the\\ Pt100\\ type.The\\ temperature\\ measurement\\ range\\ is\\ between\\ -30\\ °C\\ and\\ +\\ 200\\ °C.\\ \\ MODELS\\ \\ \\ CTT-4\\ Control\\ unit\\ with\\ 4\\ measurement\\ input\\ CTT-8\\ Control\\ unit\\ with\\ 8\\ measurement\\ input\\ \\ \\ OPTIONS\\ \\ \\ Serial\\ output\\ RS232/RS485.\\ Analog\\ output\\ 0/4\\ ÷\\ 20\\ mA\\ \\ \\ APPLICATIONS\\ \\ Overtemperatures\\ caused\\ by\\ overloads\\ or\\ internal\\ failure\\ due\\ to\\ degradetion\\ of\\ the\\ \\ dielectric\\ qualities\\ of\\ insulating\\ materials\\ in\\ transformers\\ and\\ electrical\\ machines,\\ inevitably\\ leads\\ to\\ a\\ reduced\\ efficiency\\ and\\ energy\\ loss\\ in\\ ditribution\\ systems.\\ \\ To\\ prevent\\ and\\ control\\ degradation\\ of\\ insultaing\\ materials\\ in\\ electrical\\ machines\\ \\ due\\ the\\ thermal\\ stress,\\ it\\ si\\ necessary\\ to\\ use\\ integrated\\ measurement\\ systems\\ such\\ as\\ CTT\\ control\\ units.\\ CTT\\ control\\ units\\ \\ are\\ able\\ read\\ four\\ temperature\\ values\\ (8\\ values\\ on\\ model\\ CTT-8)\\ with\\ help\\ of\\ four\\ Pt100\\ probes.\\ \\ \\ FUNCTIONS\\ \\ For\\ each\\ inputs\\ it\\ is\\ possibile\\ to\\ set\\ the\\ threshould\\ temperature\\ of\\ alarm\\ and\\ trip\\ with\\ great\\ accurancy\\ and\\ to\\ display\\ the\\ maximum\\ values\\ reached.\\ Control\\ units\\ are\\ enclosed\\ in\\ a\\ self-extinguishing\\ thermoplastic\\ housing\\ \\ of\\ 96\\ x\\ 96\\ mm\\ in\\ compliance\\ with\\ DIN\\ 43700\\ and\\ are\\ built\\ in\\ conformità\\ with\\ CEE\\ directives\\ 93/68\\ safety\\ and\\ 89/336.\\ \\ CTT\\ control\\ units\\ can\\ be\\ supplied\\ with\\ the\\ serial\\ interface\\ to\\ allow\\ remote\\ monitoring\\ of\\ temperatures\\ using\\ a\\ PC.\\ \\ The\\ control\\ unit\\ programmed\\ through\\ keys\\ located\\ on\\ the\\ front\\ panel:\\ \\ •\\ SELECTION\\ OF\\ THE\\ NUMBER\\ OF\\ ACTIVE\\ CHANNELS\\ \\ \\ Setting\\ up\\ the\\ number\\ of\\ active\\ measurement\\ channels\\ 3\\ or\\ 4\\ (8\\ fixed\\ channels\\ for\\ model\\ CTT-8).\\ \\ \\ •\\ VENTILATION\\ CONTROL\\ \\ \\ The\\ following\\ ventilation\\ controllo\\ modes\\ can\\ be\\ selected:>\\ fan\\ control\\ off\\ –\\ fan\\ control\\ on,\\ 4\\ inputs>\\ fan\\ control\\ on\\ 3\\ input\\ –\\ fan\\ control\\ on,\\ only\\ the\\ 4\\ inputWhen\\ the\\ fan\\ control\\ is\\ on\\ the\\ temperature\\ setting\\ values\\ for\\ fan\\ control\\ can\\ be\\ fully\\ selected\\ by\\ the\\ user.\\ \\ •\\ ALARM\\ AND\\ TRIP\\ TEMPERATURES\\ (HOLD\\ FUNCTION)\\ \\ \\ For\\ each\\ measurement\\ input\\ the\\ values\\ of\\ alarm\\ and\\ trip\\ can\\ be\\ chosen\\ in\\ the\\ range\\ 1\\ ÷\\ 200\\ °C.\\ \\ \\ •\\ STORAGE\\ OF\\ ALARM\\ ABD\\ TRIP\\ CONDITIONS\\ \\ \\ This\\ function\\ will\\ store\\ alarm\\ and\\ trip\\ values\\ until\\ they\\ are\\ manually\\ reset.\\ \\ \\ \\ \\ \\ \\ 版权所有\\ 杭州嘉瑞电气有限公司\\ 如有关于本站点的问题或建议，请发邮件至杭州嘉瑞电气有限公司\\ vti_charset:SR|gb2312 vti_language:SR|zh-cn