Update on NAVSEA Electrical Systems Technical Initiatives

Slide Note

This update covers various technical initiatives and priorities related to electrical systems in the maritime industry, focusing on standards, specifications, and projects supported by NAVSEA. It includes information on circuit breaker obsolescence, flame resistance testing, cable transits, sealants, fire safety tests, and qualification requirements. Additionally, updates on electrical enclosures standards are discussed, highlighting the alignment with industry references and rating definitions. The content emphasizes ongoing efforts to improve safety, reliability, and efficiency in electrical systems for ships.

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NAVSEA 05Z3 Electrical Systems Technical Update Presented at the National Shipbuilding Research Program Electrical Technologies Panel Meeting North Charleston, SC March 30, 2023 Christopher Nemarich Engineering Manager Electrical Systems Ships SEA 05Z33 NAVAL SEA SYSTEMS COMMAND DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NAVSEA 05Z Update to NSRP NAVSEA 05Z3 Initiatives and Priorities Summary of Standards and Specifications Projects NSRP Electrical Technologies Projects Supported DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NAVSEA 05Z Update to NSRP NAVSEA 05Z High Priority Items SEA 05Z is working with NSWC PD on numerous issues related to Circuit Breaker Obsolesce and Qualification Testing Requirements Continuing efforts to reduce the number of over-age specifications standards technical manuals and drawings MIL-I-631 D Insulation Electrical Synthetic Resin Requalification to new formulations of flame retardant and plasticizers. Update requirements established describing UL 94 Flame Resistance Tests Supply Chain and Qualification and Requalification Issues of MIL-DTL-24705B Cable Transits andMIL- I-3064 Plastic Sealer Supporting FFG 62 electrical plant design DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NAVSEA 05Z Update to NSRP Multi Cable Transits and Sealants Fire Resistant Qualification Test Requirements for MIL-DTL-24705B and Slants 1 3 4 Penetrators Multiple Cable Electric Cable (MCTs) Project started to update all Fire Safety Tests per MIL-STD-3020 Appendix D. Working to get test requirements to all vendors and work towards requalification of cable transits for the QPL. Shock Testing is required prior to Fire Resistance Test for QPL products to requalify. This change impacts QPL Approval for Existing and New Cable Transits MIL- I-3064 Insulation Electrical Plastic Sealer Revising qualification and retention testing requirements of MIL-STD-3020 Appendix D. Letter sent to sealants vendors detailing the new test requirements. Related tasks to get approval for products to relieve supply chain issues and new qualification of the NSRP developed MCTs and Sealing Systems. NEW MIL-S-24235C and 19 slant sheets Stuffing Tubes, Metal, and Packing Assemblies for Electric Cables, General Specification DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Standard for Electrical Enclosures Update MIL-STD-108 Definitions Basic Requirements Enclosures for Electric and Electronic Equipment Last updated in 1985 but no significant changes since 1966 Updated all reference documents e.g. IEC 60947-1 Aligned with MIL-DTL-2036 Added reference to Composite Enclosures Dwg Included a table for enclosure rating definitions and comparison to IP and NEMA NEMA solicited input from enclosure manufacturers but few responses received. The comment period has ended but we are encouraging additional SRB review of proposed changes. 5 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Standard for Electrical Enclosures Update Degree of Enclosure Hermetic 1 Definition Enclosure is permanently sealed to prevent transmission of air gas or moisture. Open Open protected 3 Enclosure provides no environmental protection and permits free transmission of air. Splashproof Splashproof protected 3 Enclosed equipment when mounted in its normal manner operates satisfactorily in presence of liquid (coarse spray) or solid particle directed at it or its mounting surface. Spraytight 4 Enclosure prevents entry of liquid striking it from any direction. Submersible (15 feet) Submersible (50 feet) Submersible (150 feet) Submersible (300 feet) Submersible (1 600 feet) Open submersible (15 feet) Open submersible (50 feet) Open submersible (150 feet) Open submersible (300 feet) Open submersible (1 600 feet) Enclosed equipment operates satisfactorily when submerged in water up to specified depths. DRAFT Totally enclosed Enclosure prevents circulation of air between the exterior and interior but does not necessarily prevent leakage of air. Watertight Enclosure prevents leakage of water striking or covering enclosure. 6 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Standard for Electrical Enclosures Update MIL-STD-108 NEMA Enclosure Type 1 IEC 2 IP60 IP61 IP62 1P63 IP64 IP65 1P66 IP02 IP12 Airtight 4 4X 6 6P Drip-proof 15 degrees 2 3 3X 3S 3SX 3R 3RX 4 4X 5 6 6P 12 12K 13 Drip-proof 15 degrees protected Drip-proof 45 degrees IP22 IP23 3 3X 3S 3SX 3R 3RX 4 4X 5 6 6P 12 12K 13 Drip-proof 45 degrees protected Dust-ignition proof Dustproof Dust-tight Explosion proof Hermetic Open IP23 IP66 IP6X IP6X N A IP66 IP00 9 4 4X 6 6P 4 4X 6 6P 7 8 4 4X 6 6P 1 2 3 3X 3S 3SX 3R 3RX 4 4X 5 6 6P 12 12K 13 Open protected Splash proof 2 3 3X 3S 3SX 3R 3RX 4 4X 5 6 6P 12 12K 13 IP20 AND UP IP04 3 3X 3S 3SX 3R 3RX 4 4X 5 6 6P 12 12K 13 Splash proof protected Spray tight IP25 IPX5 3 3X 3S 3SX 4 4X 6 6P DRAFT Spray tight protected Submersible (15 foot) Submersible (50 foot) Submersible (150 foot) Submersible (300 foot) Submersible (1 600 foot) Open submersible (15 foot) Open submersible (50 foot) Open submersible (150 foot) Open submersible (300 foot) Open submersible (1 600 foot) IP25 6 6P 6P 6P 6P 6P 6 6P 6P 6P 6P 6P IP67 IP68 IP68 IP68 IP68 IP68 IP67 IP68 IP68 IP68 IP68 IP68 7 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Electrical Cables Assemblies Connectors MIL-DTL-24643 and 80 Slant Sheets Cables Low Smoke SEA 08K review complete Slant Sheets are in final compliance review. Publication of base spec and all slant sheets expected in 3rd quarter FY23 MIL-DTL-24640 Cables Lightweight Low Smoke (Base spec + all slant sheets) Project in progress 8 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Electrical Cables MIL-HDBK-299Electrical Cable Comparison Handbook Last Revised October 1991 CableData Pertaining to Electric Shipboard Cable Revisions updates for intermediate review are being developed Include cables new to MIL-DTL- 24643 and MIL-DTL-24640 and other new cables introduced after 1991 MV cables (rated 5 KV and 15 KV) to be included in addition to LV rated cables (<1KV) NEMA Cable manufacturers added to the SRB reviewer list Compiling cable ampacity and bend radius data to updated tables Added associated slant sheet for each cable type. Changed insulation to thermoset for most cable types per latest slant sheet revisions. Made sure that unarmored is called out for applicable cable types. For armored called out the armored characteristic where applicable. Stated that armored is not in the most current slants. Believe this is the way to go since the armored versions are still installed in older ships. NSRP and NAVY end users and designers are encouraged to do SRB review of proposed changes 9 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Lighting MIL-DTL-16377 Recently Published 16337 Rev K Base Spec 78A T8 Fluorescent General Lighting 17 W Sym 331.1T8 331.2T8 347.3T8 79A T8 Fluorescent General Lighting 34 W Sym 77.4T8 77.5T8 344.2T8 344.3T8 80A T8 Fluorescent General Lighting 51 W Sym 333.1T8 333.2T8 341.1T8 82A T8 Fluorescent Emergency Lighting 17 W Sym 331.1T8EM 331.2T8EM 83A T8 Fluorescent Emergency Lighting 34 W Sym 77.4T8EM 77.5T8EM 84A T8 Fluorescent Emergency Lighting 54 W Sym 333.1T8EM 333.2T8EM 10 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Lighting MIL-DTL-16377 Slant Sheets out for SRB review (23 Slants) 4B Fluorescent & SSL Equiv Detail Sec Bureau 8W Sym 142.2 and 142.2SSL 10B Fluorescent & SSL Equiv General Directional 32W Sym 145.4 145.5 16B Fluorescent & SSL Equiv Detail Lighting for Desks 8W Sym 141.2 150.2 17C Fluorescent & SSL Equiv Detail Lighting for Berths 8W 20B Incandesc & SSL General 50 W Dripproof 15 Degrees Sym 64.1 65 21B Incandesc & SSL General 100 W Dripproof 15 Degrees Sym 89 90.2 23B Incandesc & SSL General 200W Watertight Sym 57 57.1 69 69.1 25B Incandesc & SSL General 110W Explosionproof Sym 48.2 68.2 27D Incandesc & SSL General 50 W Watertight Sym 92.2 93.2 93.4 93.5 30B Incandesc & SSL General Psych Wards 100W Dripproof 15 Degrees Sym 137 31B Incandesc & SSL Detail Spot Illumination 6-25W Enclosed Sym 147.2 33B Incandesc & SSLDetail Lighting for Sightglasses 6W watertight Sym 136.1 156 36A Incandesc & SSL General 25 W Watertight Sym 95.1 96.1 97.1 98.1 38B Detail Hull Numerals Lighting Sym 304 39B Streamer Type Detail Topside Ship Dress Watertight Sym 307 40C Locks Fluorescent Lamp 49B Extension SSL Explosionproof and Watertight Detail Light Sym 306.2SSL 52C SSL Light Extension Explosionproof Watertight Sym 286SSL 56A Machine Tool Portable Floating Adjustment Symbol 266.2 58C Fluorescent Detail Lighting for Mirrors Sym 351 351.1 352 352.1 59B Fluorescent & SSL Equiv Detail for Step Illumination 8W Sym 353 353.1 353.2 71A Fluorescent & SSL Equiv Detail Lighting Mirrors for Small Boats 8W Sym 354 76A Fluorescent & SSL Equiv Emergency Lighting 60 - 80W Sym 348EM 349EM 11 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Lighting MIL-DTL-16377 Proposed Inactivation MIL-F-16377 18A Fluorescent Detail Lighting for Mirrors 15 W Sym 337 and 340 MIL-F-16377 32A Incandescent Detail Lighting for Water Gauges 5-25W Sym 134.1 MIL-F-16377 35 Fixtures Light Incandescent Detail Lighting Small Boats 3-Candle 12- 16-24-28 V Splashproof Sym 310 Proposed Cancellation MIL-F-16377 50A Incandescent Light Extension Small Boats 25 W 12-28 Volts Watertight Sym 302.2 MIL-F-16377 51A Incandescent Light Extension 25 W Explosionproof - Watertight Sym 290 and 291 12 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Lighting K and Associated Parts 60B Incandescdescent Floodlights 150 W Sym 316 317 Published 25-Jan-2022 - Will open a new project to provide an allowance SSL floodlights. 61A Incandescd & SSLFloodlights 300 W 120 V Sym 303.2 303.3 303.4 303.2SSL 303.3SSL 303.4SSL Eliminated EMI requirements and reduced Shock & Vibe to Grade B Published 02-Nov-2021 Action needed to add electrical ground check test for Type III (SSL) fixture. 86B Lamp SSL for use as Replacement for Commercial Fluorescent Lamp Published 02-Nov-2021 Action needed to add emergent electrical safety tests for LED replacement tubes. 13 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS STANDARDS DRAWINGS Lighting NSTM Chapter 330 S9086-K9-STM-010 330 Rev 5 Added documentation to Appendix B on procedure to correct wiring on retrofit Battle Lantern battery charger circuits. Updated Table A-1 Available LED Tubes to Replace Fluorescent Lamps TDMIS document system is being retired. NSTMs will be published on NAVAIR s MBPS document management website. 14 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NSRP Electrical Technology Panel Projects 05Z3 NSRP Supported Project DTS Distributed Temperature Sensing for MV Switchboard Monitoring Scheduled presentation and demo at HII offices adjacent Washington Navy Yard on April 5. Planning a demo to be held in Philadelphia later in April. 15 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NSRP Electrical Technology Panel Projects 05Z3 NSRP Supported Projects Cable Penetration test and qualification to MIL-DTL-24705 Cable Penetration sealant test and qualification to MIL-I-3064 Shore Power Cable Connector Test Set development Advanced Top Side Lighting Organic LED and Low Voltage Lighting Future Design Production Electrical Connector Standardization Shipboard Cable Tray Improvements 16 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MFPT 2023 Meeting Society for Machinery Failure Prevention Technology https: mfpt.org https: www.vi-institute.org viatc2023-conference 17 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.