Dear group
I developing BLDC (Brushless DC) motor, which is operated 310VDC by IGBT inverter circuit. According to UL standard 1004, motor has clearance 6.4mm between motor coil and metal enclosure at over 300V. In my experience the most important factor of clearance is transient voltage so I think if I use surge suppressor or varistor than can reduce clearance between that parts. Is it right? Does anyone have some good idea about how can reduce clearance. And If it is possible how can I select surge portection? Best regards, James Yoo Safety Engineer of Household Appliance. ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).