On Tue, 3 May 2016 13:29:42 +0100 andy pugh <[email protected]> wrote:
> On 3 May 2016 at 12:41, Erik Christiansen <[email protected]> wrote: > > > > The link to SSR precautions indicates that the SSR already includes a > > snubber. But page 3 of the notes says that is often not sufficient, and > > suggests a 440 - 470 volt varistor (MOV) as protection in a 200 - 240 > > volt application. That clearly assumes the use of e.g. a 600v SSR, not a > > mere 400v unit. > > Part of the reason for this arrangement of relays is that I could not > find an NTC device with enough current carrying capacity to work as a > surge suppressor. If you need limiting of inrush current I guess a transistor connected as a current source would be the perfect solution for this? Or is it against surge voltage? ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
