Re: [PSES] Regulatory requirements for MOVs - 62368 - surge protective device and surge protective component confusion

2017-11-02 Thread mickm
Dear Pete, Unfortunately the IEC 62368-1 language does not conform the to surge protection terms established by the IEC surge protection subcommittees SC 37A (Low-voltage surge protective devices) and SC 37B (Components for low-voltage surge protection). Notice one subcommittee deals with

[PSES] power strip details

2017-09-19 Thread mickm
Ralph, The IEEE is a not-for-profit organisation, but if there is a chance of making money they will do so. Traditionally you can still buy withdrawn standards. Having revised several old C62 standards the biggest problem I found is that the IEEE loses the source text or graphics or b

[PSES] Implications of MSPD

2017-09-19 Thread mickm
service can transfer to another. This proposal is driven by the types of power distribution system in Japan. Regards, Mick Maytum Safety and Telecom Standards mjmay...@gmail.com -- Original Message -- From: "John Woodgate" To: "mickm" ; EMC-PSTC@listserv.ieee.org Sent:

[PSES] Meaning of MSPD

2017-09-19 Thread mickm
- From: "John Woodgate" To: "mickm" ; EMC-PSTC@listserv.ieee.org Sent: 19/09/2017 09:16:50 Subject: RE: [PSES] power strip details Good info. What is an MSPD? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleig

[PSES] power strip details

2017-09-19 Thread mickm
the surge protector is at the service entrance, then the high current is in the electricity supplier wires, and the coupling to telephone, cable, and data cables is reduced due to the distance between the wires. http://www.nemasurge.org/faqs/ Rich From: mickm [mailto:mjmay...@gmail.com] Sent

[PSES] power strip details

2017-09-16 Thread mickm
John, It seems to me that TC 108 documents really devise surge protection component tests rather that complete equipment tests and so miss some hidden field gotchas. I with Richards point about surge protection, for me the concern is the surge current being diverted into the PE system cr

[PSES] Why higher value for DC in SELV - Electrical Shock Safety Criteria"

2017-09-13 Thread mickm
A paper and thoughtful discussions by G. Biegelmeier are in the "Electrical Shock Safety Criteria: Proceedings of the First International Symposium on Electrical Shock Safety Criteria" publication. Regards Mick Maytum - This mes

[PSES] Why higher value for DC in SELV - Electrical Shock Safety Criteria"

2017-09-06 Thread mickm
After some internet searching I found the complete, 350 page, "Electrical Shock Safety Criteria: Proceedings of the First International Symposium on Electrical Shock Safety Criteria" by M. Vainberg (Author), J. E. Bridges (Editor), G. L. Ford (Editor), I. A. Sherman (Editor) available on Amazon

[PSES] Why higher value for DC in SELV - Electrical Shock Safety Criteria"

2017-09-03 Thread mickm
At http://www.sciencedirect.com/science/article/pii/B9780080253992500187 I found Electrical Shock Safety Criteria Proceedings of the First International Symposium on Electrical Shock Safety Criteria 1985, Pages 173–181 DYNAMIC ASPECTS OF BODY IMPEDANCE Richard Nute Tektronix, Inc.