Naval Sea Systems Command Electrical Systems Update

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This update covers technical information presented at the National Shipbuilding Research Program Electrical Technologies Panel Meeting in December 2020. It includes updates on electrical systems, standards, specifications, and projects within NAVSEA. Discussions on shore power systems, safety measures, and improvements in cable and connector technology are highlighted.

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NAVSEA 05Z3 Electrical Systems Technical Update Presented at the National Shipbuilding Research Program Electrical Technologies Panel Meeting December 2, 2020 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 05 Updates Status of Standards, Specifications, NSTMs and Drawings Summary of Selected Projects NSRP Electrical Technologies Panel Projects DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NAVSEA 05Z Update to NSRP NAVSEA 05Z Organization Update Arch McCleskey 05Z3 Division Director (as of Nov 16, 2020) Michael Amrozowicz (former 05Z3) is new CHENG at MARMC. 05Z3 Technical Warrant Holders 05Z31 Dana Delisle Electrical System Power Generation, Propulsion and Power Conversion, Transformers, Motors, Motor Controls, UPS 05Z32 Humberto Lopez Electrical System Architecture, Electrical Interface and Power Quality, Electric Plant Design and Controls, Nav Lighting Certification 05Z33 Chris Abadilla Electrical System Distribution, Switchboards, Bus Transfer, Circuit Protection, Cables, Shore Power, Lighting including Navigation, Electrical Safety, Arc Flash Detection, Electrical Installation, MCTs, Electrical Components and Electrical and Electro-Mechanical Instrumentation 05Z34 Elizabeth Donohue / Tamera Barr Energy Magazine Storage, Batteries including Lithium Ion, UPS, Fuel Cells and Capacitors, Battery Safety Management and Certification 05Z35 Dr John Heinzel (NSWC Philadelphia) Future Power and Energy R&D 05Z36 Roger Smith (NSWC Crane Indiana) - Electronics DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NAVSEA 05Z Update to NSRP NAVSEA 05Z - Shore Power Working Group, 28-29 October 2020 Virtually cohosted by Marvin Newton, NAVFAC Atlantic, and Chris Abadilla / Peter Andrich NAVSEA 05Z Key documents MIL STD 2003 2B (EPISM) and P 604 (ESAFE) were discussed as applicable to the SPWG. Shore power cables and connectors for 480V surface ships plugs and receptacles for both the ship and shore side will need to be updated over the coming years. Cables are at end of life in many cases and lugs/connectors have new requirements. Safety continues to be paramount in the community. Revisions to cable cap and lanyard configuration for the MIL C 24368/5 sub plug are underway and investigations into safer preventative maintenance practices (IR scans) are being performed to reduce the risk of fire. Improvements to ship connector testing by NSRP and evaluation of connector pin testing by NAVFAC will ultimately lead to more reliable shore power systems. NAVFAC and NAVSEA criteria are not in 100% alignment for some criteria. This is a major focus area moving forward to clarify criteria and ensure that requirements are met. DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Electrical Specifications and Standards Projects MIL-STD-2003 Revision B Electric Plant Installation Standard Methods for Surface Ships and Submarines Published October 6, 2020 MIL-DTL-24643 Cables, Low Smoke (Base spec + all slant sheets) Final comment adjudication / Internal document finalization ECD Dec 2020 TWH and 05S concurrence Dec 2020 Publication January 2021 MIL-DTL-24640 Cables, Lightweight, Low Smoke (Base spec + all slant sheets) Effort to ramp up following publication of MIL-DTL-24643 Intermediate review ECD April 2021 5 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Shore Power Cable Connectors MIL-DTL-24368/1C - Connector Assemblies; Plug, Power Transfer, Shore to Ship, 500 V 500 A 60 Hz, Symbol 1160 MIL-DTL-24368/2C - Connector Assemblies; Receptacle, and Receptacle-Cabled, Power Transfer, Shore to Ship, 500 V 500 A, 60 Hz, Symbol 1161 Both validated on 9-March-2020 Updating and Adjudicating compliance review comments in preparation for SRB Circulation MIL-C-22368/4A Connector Assemblies; Plugs and Receptacles, Electric, Power Transfer MIL-C-24368/5 Connector Assemblies; Plug, Submarine Shore Power Transfer MIL-C-24368/6 Connector Assemblies; Dual Purpose, Submarine Shore Power Transfer All Validated for use 9 March 2020 and 3 June 2020 6 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Switchboard Specifications (in review) MIL-DTL-16036M Switchgear, Power, Low Voltage, Naval Shipboard Interim Amendment 1 allowances for Jam Nuts rejected by SEA 08 Allowances were added in MIL-DTL-32483A however, due to contentions during review, the wording of the allowance is being revisited delaying the release of these two specifications. MIL-DTL-32483A Switchgear, Power, Hard-Mounted, Medium Voltage, Naval Shipboard Comment adjudication alongside MIL-DTL-xx653 Issue of Jam Nuts Allowance Publication targeted FY 2021 MIL-DTL-xx653 Switchgear, Power, Shock-Mounted, Low Voltage, Naval Shipboard Created to establish standard construction, testing, and safety requirements for shock-mounted low voltage switchgear that will result in consistent vendor pricing from program to program. Comment adjudication alongside MIL-DTL-32483 Publication targeted FY 2021 7 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS MIL-DTL-32656 Arc Fault Protection System, General Specification Published 02 June 2020 This specification covers the Arc Fault Protection System (AFPS) that detects an arc fault in electrical equipment such as switchboards, load centers, motor drives, and produces a signal to automatically trip upstream circuit breakers to isolate the affected section of the enclosure. MIL-DTL-32656 / 1 Arc Fault Protection System, Photosensor The photosensor shall consist of a photodiode element, an operational amplifier, and a built-in-test (BIT) circuit in a shielded plastic case. MIL-DTL-32656 / 2 Arc Fault Protection System, Continuous Thermal Monitoring Device, Thermal Ionization Type The thermal ionization detector (TID) CTMD is a type that shall respond to small particles of insulation emitted by overheated cables or from coated junctions and generate an alarm signal. If this signal persists (approximately 4 seconds), the Arc Fault Protection System (AFPS) control unit shall alarm. 8 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Circuit Breaker Specifications (In Progress) MIL-DTL-17588F - Breakers (ALB-1) and Switch, Toggle (Circuit Breaker, NLB-1) Air, Insulated Housing, 125 Volts and Below AC and DC (Naval Shipboard Use) MIL-DTL-17361H - Circuit Breaker Types AQB/NQB, Air, Electric, Low Voltage, Insulated Housing (Shipboard Use), General Specification MIL-DTL-17587D - Circuit Breakers, ACB, Low Voltage, Electric Power, Air, Removable Construction, General Specification SRB Review UL 489D US Naval Commercial-Off-the-Shelf (COTS) Designated Molded-Case Circuit Breakers and Accessories for Use on Non Nuclear Naval Combatant Ships UL 1066A US Naval Commercial Off the Shelf (COTS) Designated Three-Pole Low- Voltage AC Power Circuit Breakers, Drawout-Mounted Type, and Accessories / Functional Components for Use on Non-Nuclear Naval Combatant Ships 9 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS FY 2021 Project Starts MIL-DTL-24705B Penetrators, Multiple Cable, Electric Cable (MCTs) Update and add fire stop test requirements of MIL-STD-3020 Planned Start 2021 Currently Not Funded MIL-DTL-3124FGenerator, Alternating Current, 60-Hertz (Naval Shipboard Use) MIL-PRF-XXXXMulti-Layer, Multi-Conductor Laminated Electrical Bus, AC / DC, General Specification NEW SPEC MIL-STD-108 Definitions of and Basic Requirements for Enclosures for Electric and Electronic Equipment 10 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Lighting Specifications MIL-DTL-16377J Fixtures, Lighting, and Associated Parts; Shipboard Use Amendment 1 issued July 2019 PDS Project Start Dec 2020 Intermediate Review Completed Cancellations /15 /19 /22 /24 /29 /37 /46 /47 /64 Inactivate for New Design /1 /2 /3 /5 /6 /13 /28 /34 /43 /44 /62 /65 /66 Add SSL fixture options in 13 slant sheets for incandescent or fluorescent fixtures. Reduce unnecessary lighting design and test requirements that add cost. Review all testing compliance issues raised by industry suppliers. Add input power type options for selected fixtures. Expand 16377/86 to include additional SSL lamp lengths and styles to support back-fits. Address 16377J /53D battle lanterns design, operational and maintenance issues. Shipbuilder and industry invited to recommend new lighting system technologies. 11 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Lighting Specifications Miniature Lamps MIL-DTL-6363 H Lamps, Incandescent, Aircraft Service, General Specification Retain MIL-DTL-6363 as an active specification Cancel /4, /5, /10, and /11 based on no NSNs or procurements. Validate and maintain /8 Inactive for new design /1, /2 /3, /6, /7, /9, /12, /13 and /14 Navigation Lights MIL-P-24175 PANEL, POWER SUPPLY AND CONTROL FOR NAVIGATION LIGHTS 27-Aug-1971 /1B DP NON MAGNETIC 10A 120VAC 60 Hz 3 PH 6 CIRCUITS SYM 944.2 CANCEL /2A NWT 10A 120VAC 60 Hz 3 PH 8 CIRCUITS SYM 940.1 COMMONLY USED /3A NWT 10A 120VDC DP 8 CIRCUITS SYM 945.1 CANCEL /4A NWT 10A 120VDC DP 10 CIRCUIT SYM 942.1 CANCEL /5B 10A 120 VAC 60 Hz TE SYM 2550.1 SUBMARINES 12 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS NSTMs S9086-KC-STM-010/300, Rev 10 NSTM Chapter 300, Electric Plant-General Publication expected January 2021 S9086-KY-STM-010/320, Rev 7 NSTM Chapter 320, Electric Power Distribution Systems Awaiting intermediate review 13 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

MIL SPECS, STANDARDS, DRAWINGS Instrumentation Specifications NAVSEA 803-2145532C Indicator/Indicating System Liquid Level Application/Selection Guide Drawing SRB completed / Comments adjudicated March 2020 Incorporating final revisions to drawing In NAVSEA 08 Review MIL-I-20037B Indicators, Sight, Liquid Level, Direct/Indirect Reading, Tubular Glass/ Plastic MIL-T-15377F - Temperature Monitor Equipment Naval Shipboard (Cancel) MIL-T-24387A (Cancel) MIL-T-24388C (Cancel) Replace with ASTM F2362 MIL-T-19646A Thermometer, Gas Actuated, Remote Reading MIL-I-17244E Indicators, Temperature, Direct-Reading, Bimetallic (3 and 5 Inch) MIL-DTL-15103 Salinity Indicating Equipment - Publication expected March 2021 MIL-G-18997E Gauge, Pressure, Dial Indicating MIL-HDBK-801 List of Pressure Gauges FY 2021 UNFUNDED 14 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

NSRP Electrical Technology Panel Projects 05Z Endorsed NSRP Projects Shore Power Cable Connector Test Set development Advanced Top Side Lighting Organic LED Low Voltage Lighting Electrical Connector Standardization Shipboard Cable Trays Supporting qualification requirements review for Insulated Bus Pipe DTS for Switchboard Monitoring 15 DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.