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IEEE NFPA 70 Section 690 Photovoltaic Solar Power

June 7 @ 7:00 pm - 8:00 pm

Join us for an interactive session with Asif Khokher on Section 690 of the National Electrical Code Solar PV Power. Some updates to the code: 690.1 Removes large scale PV from scope. Revised figures clarify the end point of a PV system. 690.2 New and revised definitions for dc-to-dc circuit, PV system dc circuit, generating capacity, inverter input/output circuit, functional grounded PV System. 690.4(D) Clarifies that multiple PV System, not just multiple inverters, are allowed on a single building. 690.5 and 690.35(C) Moved to 690.41(B); consolidates grounding and ground-fault protection issues. 690.7 Reorganized and adds voltage calculation method for larger PV Systems 690.8 Revised to cover dc to dc converter circuits; allows for additional calculation method for PV circuit currents. 690.9 Revised to cover all PV systems, including ungrounded systems; requires only one overcurrent device per circuit. 690.10 Stand-alone systems moved to new Article 710. 690.11 Revised to exempt PV output circuits on ground-mounted systems from arc-fault protection in some cases. 690.12 Dramatically increases details in 690.12 and includes requirements for rapid shutdown within the array 690.13 Clarifies that there are only two types of disconnects in PV systems (1) the PV system disconnecting means (690.13) and (2) the disconnects for equipment (690.15) 690.15 Removes all of 690.16, 690.17, and 690.18 and places the necessary requirements in 690.13 and 690.15; introduces ‘isolating devices’; requires that disconnects open both positive and negative conductors on the dc side of the PV systems. 690.31 Reorganized and revised; single set of requirements cover all wiring methods, including ungrounded systems. 690.31(B)(1) Disallows use white wire on the dc side of a PV system for anything except solidly grounded PV systems, which are rare. 690.31(C)(1) Type USE-2 and PV Wire are now permitted as single-conductor cable for grounded and ungrounded PV systems. 690.31(D) Requires that multiconductor cables be liste for the application 690.31(E) Permits flexible PV Wire with trackers, provided it has sufficient number of strands; adds new wire strand table. 690.41 and 690.42 Indroduces concept of functinonal grounded PV systems to 690; requires ground-fault protection for all PV systems that are not solidly grounded (vast majority of systems) 690.43 Reorganized for clarity; simplifies equipment-grounding requirements. 690.47 Completely reorganized and simplified; requires support structures to have a grounding electrode system; requires grounding conductor be connected to the local grounding electrode sytem; makes additional array electrodes optional. 690.53 Simplifies dc PV source markings by removing rated maximum power point voltage and current from signage. 690.56(C) Details marking requirements for systems equipment with rapid shutdown. Part VII Simple reference to Article 705 replaces Part VII, ‘Connection to other Sources’ Part VIII A reference to new Article 706 replaces the content, other than requirement for self-regulated PV charge control. Parts IX and X Removes content about systems over 1,000V and EV charging, as these are adequately covered elsewhere. Co-sponsored by: IEEE PES Power and Energy Society Speaker(s): Asif Khokher, Agenda: 7:00 pm PDT IEEE Announcements 7:02 pm PDT Introduction of the Speaker 7:04 pm PDT Presentation 7:45 pm PDT Q&A Seattle, Washington, United States, 98121

Details

Date:
June 7
Time:
7:00 pm - 8:00 pm
Event Category:
Website:
https://events.vtools.ieee.org/m/315748

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