I have the official published edition of IEC 61326-1:1997 here, hopefully I can assume that CENELEC did not tamper with the standard before harmonizing it. (Has it gone EN yet?)
Regarding emissions; it references CISPR-11 and CISPR-22 and lists limits for Class A (termed "industrial locations") and Class B (termed "non industrial locations"). It specifies the test distance as 10 meters for both classes. A small reference to CISPR-22's annex about alternate test sites is specifically mentioned, as well as CISPR-14. AC Line Frequency harmonics and Flicker tests are NOT included in this edition. Regarding immunity; All tests reference the newer IEC 1000-4-X series of standards. ESD levels are 4 kV both contact and air discharge. EFT is 1 kV for AC lines, 1 kV for DC power lines longer than 3 meters, and 0.5 kV for I/O lines longer than 3 meters. I/O lines that connect directly to the "mains supply" lines are tested to 1 kV. RF levels are 3 V/m and 3 Volts for radiated and conducted RF respectively. Conducted RF applies to AC and DC power lines, and to signal lines longer than 3 meters, or to signal lines that connect directly to the "mains supply" lines. Surge for AC power lines is 0.5 kV line to line, and 1 kV for line to ground. Same applies to DC power lines longer than 3 meters. And applies to signal lines longer than 3 meters or that connect directly to the "mains supply" lines. Voltage interruption is 100% loss of power for 1 full cycle. The rumored DOW is 31 December 2000. Sometime soon (maybe during '98) a new edition will be published that will include: a new "heavy industrial" section, plus a new battery operated equipment section with dramatically reduced testing requirements (e.g. 1 V/m RF, no EFT, no surge, no conducted RF...). IMO this standard seems preferable over the proposed new ITE (CISPR-24) EMC standard with the extra telecom immunity test, but the scope of this standard should be compared against the product in question before a decision is made. There is one important test setup relaxation granted to "equipment such as generators, analyzers, frequency meters", allowing these devices to be tested without cables attached to an external "test object". (Consequently, a notice is required in the user instructions regarding the potential for higher emissions when cables are attached, but I wonder if this exceeds the mandate CENELEC has for test standards?) Before you ask, no, we have not started using this standard yet; there is a lot of cost associated with the new expanding EMC tests (Especially when you have about 200 products affected by this standard.) and we need time to budget for this mess. Regards, Eric Lifsey National Instruments [email protected] on 12/11/97 07:16:20 PM Please respond to [email protected] To: [email protected] cc: (bcc: Eric Lifsey/AUS/NIC) Subject: FW: Fwd:EN61326 relative to ISM and ITE Sorry for repeating myself, it seems my first message was lost Hello everyone, Does anyone have experience with testing to the new EMC standard for lab equipment. Are radiated emissions different from ISM and ITE standards? When does it come into force? Would you recommend choosing this standard over others if I have the option? thanks moshe valdman ------------------------------------- Name: moshe valdman E-mail: [email protected] Phone: 052-941200 Telefax: 03-5496369 List-Post: [email protected] Date: 11/12/97 Time: 17:16:20 You are most welcome to visit my homepage at: http://www.geocities.com/CapeCanaveral/5233/ -------------------------------------
