Jun 25, 2008 #1 powercraxy Electrical Feb 19, 2003 1 SR, DR and MR ratings of current transformers. How do they compare with IEC spec'd CTs? Thanks
Jun 25, 2008 #2 jghrist Electrical Jul 16, 2002 4,226 I believe that SR, DR, and MR refer to single ratio, dual ratio, and multi-ratio, not to ratings. Upvote 0 Downvote
Jun 25, 2008 #3 ANGIBEW25 Electrical Feb 17, 2008 17 Hi Powercrazy: jghrist is absolutely correct. The abbreviations you listed are standard abbreviations for single ratio, dual ratio and multiratio C.T's. Good Luck. ANG Upvote 0 Downvote
Hi Powercrazy: jghrist is absolutely correct. The abbreviations you listed are standard abbreviations for single ratio, dual ratio and multiratio C.T's. Good Luck. ANG
Jun 26, 2008 #4 scottf Electrical May 28, 2002 1,005 In IEEEC57.13, multi-ratio (MR) secondary windings are specifically defined (for 600:5A MR to 4000:5A MR). In the IEC world, there is no specific definition of multi-ratio. Therefore, it must be specifically spelled out, i.e. 500/1000/2000:1A. Upvote 0 Downvote
In IEEEC57.13, multi-ratio (MR) secondary windings are specifically defined (for 600:5A MR to 4000:5A MR). In the IEC world, there is no specific definition of multi-ratio. Therefore, it must be specifically spelled out, i.e. 500/1000/2000:1A.
