From http://www.connectwell.com/testing1.htm : >>>CTI - Comparative Tracking Index of Insulation material The insulation material is divided into four groups according to their CTI (Comparative Tracking Index) ¡E Insulation I : 600 CTI ¡E Insulation II : 400 CTI < 600 ¡E Insulation III a : 175 CTI < 400 ¡E Insulation III b : 100 CTI < 175 The Comparative Tracking Index must be defined according to DIN IEC 112/ VDE 0303 part 1 on specimens made specifically for this purpose with test solution A. The proof-tracking index (PTI) is also used to identify the tracking characteristics of materials. A material may be included in one of the four groups given above on the basis that its PTI, established by the method of IEC 112 using solution A, is equal to or greater than the lower value specified for the Insulation group. <<< DIN and VDE are german standardization bodies. Regards Thomas > -----Original Message----- > From: russell (ù¯À) [mailto:[log in to unmask]] > Sent: Thursday, September 18, 2003 4:59 AM > Subject: Re: PTI value > > > Phil, > > A little more research did turn up "Proof of Tracking Index" > , so close enough. Thanks. > > Either name is okay, Russell is easier to write in Chinese so > used here more. > > Larry Russell > > -----Original Message----- > From: DUTTON Phil [mailto:[log in to unmask]] > Sent: Thursday, September 18, 2003 10:21 AM > To: [log in to unmask] > Subject: Re: [TN] PTI value > > > Larry, > (sorry, called you Russell before) > Yes, could be the same thing - an abbreviation from the > german language. > > regards, > > Phil. > > -----Original Message----- > From: [log in to unmask] [mailto:[log in to unmask]] > Sent: Thursday, September 18, 2003 11:16 AM > To: [log in to unmask] > Subject: Re: [TN] PTI value > > > Phil > > Maybe, or a typo for CTI? 250 V rating seems right. > Curiouser. > > Larry Russell > > -----Original Message----- > From: DUTTON Phil [mailto:[log in to unmask]] > Sent: Thursday, September 18, 2003 9:14 AM > To: [log in to unmask] > Subject: Re: [TN] PTI value > > > Hello Russell, > > I've seen CTI (Comparative Tracking Index) > PTI may be similar (Potential Tracking Index?) > > Phil. > > -----Original Message----- > From: [log in to unmask] [mailto:[log in to unmask]] > Sent: Thursday, September 18, 2003 10:28 AM > To: [log in to unmask] > Subject: [TN] PTI value > > > Techneters with European business experience, > > On a bid from Germany, we have been asked to keep in mind; > ... > layer / Lagen 2 > surface of copper / Kupferoberflache HAL > PTI 250 V > ... > > The only suitable listing I can find for PTI is Payload Type > Identifier, which refers mainly to programing. > I believe this means 250 volt current rating to the traces, > but the head engineer here is uncertain. > Does someone know this reference? > > Larry Russell > www.cwi.com.tw > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with > following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send > e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail > to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------