JonAW Posted January 8, 2013 Report Share Posted January 8, 2013 Hi Guys, I usually put a small surge arrestor on the 230v supply to plc's but on a job at the minute there is no neutral available at the panel so we are having to use a 415v-230v step down transformer for our control supplies. Does this negate the need for a surge arrestor at the plc? Jonny Link to comment Share on other sites More sharing options...
marke Posted January 8, 2013 Report Share Posted January 8, 2013 No Mark Empson | administratorSkype Contact = markempson | phone +64 274 363 067LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | AuCom | Soft Starters Link to comment Share on other sites More sharing options...
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