Conformity Magazine - March 2009 - (Page 29) Template A Surge Generator and reference clause Central Office, Port Type 1 and optionally Customer Premises Port Type 3 Longitudinal 1000, Primary protector limiting voltage (default >1000 V) to 2000 V, >100 A into 1000 V, 10 in each polarity. GR-1089-CORE, Issue 4 test clause 4.6.7. Outside Plant Port Type 5 and optionally Customer Premises Port Type 3 Longitudinal 1000, Primary protector limiting voltage (default >1000 V) to 2000 V, >100 A into 1000 V, 10 in each polarity. GR-1089-CORE, Issue 4 test clause 4.6.7 For severe environments Longitudinal 250, Primary protector limiting voltage (default >1000 V) to 4000 V, >500 A into 1000 V, 10 in each polarity (a generator series resistor of 4 Ω is specified). GR-1089-CORE, Issue 4 test clause 4.7. B Table 7: GR-1089-CORE lightning coordination tests and their related clauses Mick Maytum is a protection expert who has served on IEC, IEEE, TIA, ATIS, JEDEC, ITU-T and Telcordia committees. He has over forty-five years of power and communications electronics experience, and can be reached at m.j.maytum@ieee.org. UL 2564 was a team effort. The author would particularly like to thank Carl Lindquist (SOC, TR-41.7.5 Chairman and Editor), and Dr. Alan Martin (Tyco) for discussion and mentorship and to the UL representatives for enlightenment on the finer points of UL standards. References 1. GR-1089-CORE Issue 4, Electromagnetic Compatibility and Electrical Safety Generic Criteria for Network Telecommunications Equipment, June 2006. UL 60950-1, Information Technology Equipment – Safety – Part 1: General Requirements, Second edition, March 2007. UL 1459, Third Edition, Telephone Equipment, Third Edition, 1996. UL 497A, Secondary Protectors for Communications Circuits, Second Edition, June, 1998. TIA-968-A, Telecommunications – Telephone Terminal Equipment – Technical Requirements for Connection of Terminal Equipment to the Telephone Network, October 2002. ANSI/TIA/EIA-571, Telecommunications User Premises Equipment Environmental Considerations, 1992. ANSI/TIA/EIA-571-A, Telecommunications User Premises Equipment Environmental Considerations, 1999. marCh 2009 Conformity 29 2. 3. 4. 5. 6. 7. http://www.magneticsmagazine.com http://www.magneticsmagazine.com http://www.magneticsmagazine.com http://www.magneticsmagazine.com
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