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Telecom Battery Maintenance vs IEEE

Telecom Battery Maintenance vs IEEE. Presented by Curtis Ashton CenturyLink Sr Lead Power Maintenance Engineer Phoenix Plaza February 4-8, 2019. Overview. IEEE Recommendations for Battery Routine Frequencies are Generally Overkill for Telecom

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Telecom Battery Maintenance vs IEEE

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  1. Telecom Battery Maintenance vs IEEE Presented by Curtis Ashton CenturyLink Sr Lead Power Maintenance Engineer Phoenix Plaza February 4-8, 2019

  2. Overview • IEEE Recommendations for Battery Routine Frequencies are Generally Overkill for Telecom • Comparing IEEE 450 (VLA), 937 (PV lead-acid), 1106 (NiCd), 1184 (UPS), 1188 (VRLA), and P2685 (Engine Starting) to ATIS-0600035 • For Engine Start Batteries a Comparison to NFPA 110 Recommendations was also done • ATIS-0600035 was Developed in Response to an FCC Order on 911 Reliability (Derecho) that asked us to follow “manufacturer’s routine practices” • Manufacturer and IEEE Practices Default to the Most Critical application (Typically Nuclear Generation), which is overkill for Telecom • Next Edition of IEEE 1188 Hopes to Address The Criticality/Frequency Issue With an Annex • Missing Items from IEEE Standards that are Covered in ATIS Document • Perhaps the various IEEE WGs listed above should Add some? • Battery Monitors (see IEEE 1491) Can Reduce Visit Frequency? • Something for the various IEEE WGs listed above to Consider?

  3. Remoteness of Many Telecom Sites

  4. Meaning of the Frequency Acronyms • W = Weekly • M = Monthly • Q = Quarterly • S = Semi-Annually (once every 6 Months) • A = Annually • 2 = bi-annually (every 2 Years) • 3 = once every 3 Years • 5 = once every 5 Years • n/a = Not Applicable • TBD = still To Be Determined (standard in progress/process) • never = Not Done • rare = only on demand • see prior = follow guidelines of IEEE 450, 1106, and 1188, as applicable • ? = not really absolutely “required” or there are alternatives • ? = probably needs to be added to this particular document?

  5. Battery Maintenance Tasks Frequency Comparison for DC Plants and UPS (page 1)

  6. Battery Maintenance Tasks/Tests Frequency Comparison for DC Plants and UPS (continued – pg 2)

  7. Telecom Annual Partial Discharge Test Prediction for VLA (Telcordia/Bellcore Patented Algorithm)

  8. Engine Start Battery Systems Maintenance Tasks/Tests Frequency Comparison

  9. Battery Items in ATIS List but Not in IEEE Documents

  10. Safety Items in ATIS List but Not in IEEE Documents

  11. Battery Monitors Reduce Site Visit / Task Frequency Need? • For Example, we went from Quarterly UPS VRLA Ohmic Readings to Annual when Battery Monitor was Installed • Annual Ohmic Check Simply to Verify Accuracy of Monitor Readings • If a Permanent Monitor is Monitoring All my Battery Temperatures and Voltages, Why Do I Need to Doublecheck them by Hand Any More Frequently than Annually?

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