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IEEE Recommended Practice for Electrical Installations on Shipboard--Design (Approved Draft), 2023
- IEEE Std 45.1-2023 front cover
- Title page
- Important Notices and Disclaimers Concerning IEEE Standards Documents
- Participants
- Introduction
- Contents
- 1. Overview [Go to Page]
- 1.1 Introduction
- 1.2 Scope
- 1.3 Purpose
- 1.4 Word usage
- 1.5 Application of various national and international standards
- 1.6 Equipment construction, testing, and certification
- 2. Normative references
- 3. Definitions, acronyms, and abbreviations [Go to Page]
- 3.1 Definitions
- 3.2 Acronyms and abbreviations
- 4. System engineering [Go to Page]
- 4.1 Introduction
- 4.2 Design baseline
- 4.3 Product design
- 4.4 Product baseline
- 5. Power system characteristics [Go to Page]
- 5.1 Electrical power systems architectures [Go to Page]
- 5.1.1 Radial architecture
- 5.1.2 Zonal architecture
- 5.1.3 Hybrid architectures
- 5.2 Standard distribution system types
- 5.3 Nominal system voltage
- 5.4 Standard frequency
- 5.5 Selection of voltage and system type
- 5.6 AC power system characteristics
- 5.7 DC power systems characteristics
- 5.8 Key electrical power system design inputs [Go to Page]
- 5.8.1 Electric plant load analysis
- 5.8.2 Ship consumer equipment locations
- 5.9 Quality of service (QoS) [Go to Page]
- 5.9.1 Introduction
- 5.9.2 Service interruption
- 5.9.3 Reconfiguration time (t1)
- 5.9.4 Generator start time (t2)
- 5.9.5 Mean time between service interruptions
- 5.9.6 QoS categories [Go to Page]
- 5.9.6.1 Uninterruptible load
- 5.9.6.2 Short-term interrupt load
- 5.9.6.3 Long-term interrupt loads
- 5.9.6.4 Exempt loads
- 5.10 Electrical power system concept of operation (EPS-CONOPS)
- 5.11 Marine environmental conditions [Go to Page]
- 5.11.1 Normal environmental conditions
- 5.11.2 Abnormal environmental conditions
- 6. Electrical power system elements [Go to Page]
- 6.1 Introduction
- 6.2 Power generation
- 6.3 Power distribution [Go to Page]
- 6.3.1 General
- 6.3.2 Primary bus
- 6.3.3 Distribution bus
- 6.3.4 Secondary bus
- 6.3.5 Special bus
- 6.4 Power conversion
- 6.5 Energy storage
- 6.6 Electrical power system supervisory control [Go to Page]
- 6.6.1 General
- 6.6.2 Power system interface device (PSID)
- 6.7 Loads [Go to Page]
- 6.7.1 General
- 6.7.2 Uncontrolled load
- 6.7.3 Controlled load
- 6.7.4 Large loads
- 7. Power system design [Go to Page]
- 7.1 Power generation and energy storage capacities [Go to Page]
- 7.1.1 General recommendations
- 7.1.2 Nonintegrated ship service power and propulsion power systems
- 7.1.3 Integrated power systems (IPSs)
- 7.1.4 Special cases
- 7.2 Power conversion and transformer ratings
- 7.3 Emergency power [Go to Page]
- 7.3.1 General
- 7.3.2 Emergency generators
- 7.3.3 Emergency energy storage
- 7.3.4 Emergency power distribution system
- 7.3.5 Emergency switchboard configuration
- 7.3.6 Temporary emergency power
- 7.3.7 Temporary emergency circuits
- 7.3.8 Final emergency circuits
- 7.3.9 Time factor for supply of emergency power
- 7.4 Safety
- 7.5 Power quality and harmonics
- 7.6 Autonomous and remote control functions
- 7.7 Insulation system design [Go to Page]
- 7.7.1 Creepage and clearance
- 7.7.2 Coordinated insulation design
- 7.8 Design life and removal routes
- 8. Electrical power generation [Go to Page]
- 8.1 General
- 8.2 Installation and location [Go to Page]
- 8.2.1 General
- 8.2.2 Air intakes
- 8.2.3 Engine exhaust
- 8.3 Generator set prime movers [Go to Page]
- 8.3.1 Prime mover sizing and performance
- 8.3.2 Lubrication
- 8.3.3 Diesel engine generator set [Go to Page]
- 8.3.3.1 Diesel engine prime mover
- 8.3.3.2 Diesel engine-generator controls
- 8.3.4 Gas turbine generator set [Go to Page]
- 8.3.4.1 Gas turbine prime mover
- 8.3.4.2 Gas turbine generator controls
- 8.3.5 Steam turbine generator sets
- 8.3.6 Prime mover speed control system (governor) [Go to Page]
- 8.3.6.1 General
- 8.3.6.2 Mechanical governors
- 8.3.6.3 Hydraulic-mechanical governors
- 8.3.6.4 Electronic governors
- 8.3.7 Engine starters
- 8.3.8 Shutdown valve
- 8.3.9 Ignition systems
- 8.4 Generators [Go to Page]
- 8.4.1 General
- 8.4.2 Selection and sizing
- 8.4.3 Generator design
- 8.4.4 Terminal arrangements and incoming cables
- 8.4.5 Heaters
- 8.4.6 Nameplates
- 8.4.7 Voltage regulation
- 8.4.8 Generator metering and protection
- 8.4.9 Variable speed generators for use with rectifiers
- 8.5 Fuel cells
- 9. Power distribution [Go to Page]
- 9.1 General
- 9.2 Circuit elements
- 9.3 Shore power [Go to Page]
- 9.3.1 General
- 9.3.2 Nameplate
- 9.4 Demand factors [Go to Page]
- 9.4.1 General
- 9.4.2 Lighting, interior communications, and electronics circuits
- 9.4.3 Galley circuits
- 9.4.4 Individual and multiple motor circuits
- 9.4.5 Other circuits
- 9.5 Voltage drop [Go to Page]
- 9.5.1 General
- 9.5.2 Feeder and branch circuit continuity
- 9.5.3 Feeder connections
- 9.6 Lighting distribution [Go to Page]
- 9.6.1 Lights controlled from the navigating bridge
- 9.6.2 Machinery space lighting
- 9.6.3 Cargo space lighting
- 9.6.4 Accommodation space lighting
- 9.6.5 Two-wire device connections
- 9.7 Delivery power feeders
- 9.8 Branch circuits [Go to Page]
- 9.8.1 General
- 9.8.2 Heating and cooking equipment
- 9.8.3 Motors
- 9.8.4 Fixed appliances
- 9.8.5 Receptacles
- 9.8.6 Lighting
- 9.9 Circuit designation
- 9.10 Distribution equipment [Go to Page]
- 9.10.1 Distribution panels
- 9.10.2 Circuit breakers
- 9.10.3 Wire lugs and connectors
- 9.10.4 Feeder box fittings
- 9.10.5 Branch box fittings
- 9.10.6 Connection box fittings
- 9.10.7 Shore connection boxes
- 9.10.8 Feeder, branch, and connection boxes [Go to Page]
- 9.10.8.1 General
- 9.10.8.2 Boxes exposed to weather
- 9.10.8.3 Molded composition boxes
- 9.10.8.4 Minimum box wall thickness
- 9.10.8.5 Metallic box creepage and clearance
- 9.10.8.6 Stuffing tube bosses/pads
- 9.10.8.7 Box covers
- 9.10.8.8 Watertight boxes
- 9.10.8.9 Box locations
- 9.10.9 Receptacles, plugs, and switches—non-watertight [Go to Page]
- 9.10.9.1 General
- 9.10.9.2 Receptacles
- 9.10.9.3 Plugs
- 9.10.9.4 Switches
- 9.10.9.5 Connections
- 9.10.9.6 Locations
- 9.10.10 Receptacles, plugs, and switches other than non-watertight [Go to Page]
- 9.10.10.1 General
- 9.10.10.2 Connections
- 9.10.10.3 Location
- 9.10.10.4 Terminal and stuffing tubes
- 9.10.11 Multi-cable penetrators
- 9.10.12 Bolts, taps, and threads
- 9.10.13 Power factor correction capacitors
- 9.10.14 Surge Protective Devices
- 9.11 Embarked vehicle power
- 10. Power conversion [Go to Page]
- 10.1 Power electronics
- 10.2 Transformers [Go to Page]
- 10.2.1 General
- 10.2.2 Installation and location
- 10.2.3 Type, number, and rating [Go to Page]
- 10.2.3.1 General
- 10.2.3.2 Wye-wye transformers
- 10.2.3.3 Wye-delta transformers
- 10.2.3.4 Delta-wye transformers
- 10.2.3.5 Delta-delta transformers
- 10.2.3.6 Multi-winding transformers
- 10.2.4 Voltage regulation
- 10.2.5 Parallel operation
- 10.2.6 Temperature rise
- 10.2.7 Terminals and connections
- 10.2.8 Nameplates
- 11. Energy storage [Go to Page]
- 11.1 General
- 11.2 Specific applications [Go to Page]
- 11.2.1 Controls
- 11.2.2 Instrumentation
- 11.2.3 Standby power applications
- 11.2.4 Buffer applications
- 11.2.5 Bulk energy storage
- 11.3 Rechargeable storage batteries [Go to Page]
- 11.3.1 General
- 11.3.2 Type of batteries
- 11.3.3 Selection and assembly [Go to Page]
- 11.3.3.1 Battery selection
- 11.3.3.2 Battery assembly
- 11.3.4 Battery size categories [Go to Page]
- 11.3.4.1 Large batteries
- 11.3.4.2 Moderate-sized batteries
- 11.3.4.3 Small batteries
- 11.3.5 Battery installation recommendations [Go to Page]
- 11.3.5.1 General
- 11.3.5.2 Cables
- 11.3.5.3 Large battery installation
- 11.3.5.4 Moderate-sized battery installation
- 11.3.5.5 Small battery installation
- 11.3.6 Battery arrangement [Go to Page]
- 11.3.6.1 General
- 11.3.6.2 Battery trays and racks
- 11.3.6.3 Battery storage lining
- 11.3.7 Ventilation [Go to Page]
- 11.3.7.1 General
- 11.3.7.2 Battery rooms
- 11.3.7.3 Battery lockers
- 11.3.7.4 Battery boxes
- 11.3.7.5 General equipment rooms, electrical rooms, and other areas
- 11.3.7.6 Large battery installation ventilation
- 11.3.7.7 Moderate-sized and small battery installation ventilation
- 11.3.8 Battery rating
- 11.3.9 Charging facilities
- 11.3.10 Overload protection
- 11.3.11 Lithium battery application
- 11.4 Flywheels
- 11.5 Supercapacitors
- 12. Voice communication systems
- 13. Motor and motor application [Go to Page]
- 13.1 General application
- 13.2 AC and DC motors—General
- 13.3 Selection [Go to Page]
- 13.3.1 Three-phase motor voltages
- 13.3.2 Single-phase ac motor voltages
- 13.3.3 Supply voltage
- 13.4 Installation and location
- 13.5 Insulation of windings
- 13.6 Locked rotor kVA
- 13.7 Efficiency
- 13.8 Lubrication
- 13.9 Terminal arrangements
- 13.10 Corrosion-resistant parts
- 13.11 Nameplates
- 13.12 Ambient temperature
- 13.13 Limits of temperature rise
- 13.14 Motor application [Go to Page]
- 13.14.1 General
- 13.14.2 AC motors
- 13.14.3 DC motors
- 13.14.4 Ventilating fan and blower motors
- 13.14.5 Pump motors
- 13.14.6 Refrigerated spaces
- 13.14.7 Galley, laundry, workshop, print shop, and similar spaces
- 13.14.8 Applications in hazardous locations
- 13.14.9 Deck machinery motors
- 13.15 Duty rating
- 13.16 Steering gear motors [Go to Page]
- 13.16.1 AC motors
- 13.16.2 DC motors
- 13.17 Motor brakes [Go to Page]
- 13.17.1 Introduction
- 13.17.2 Types
- 13.17.3 AC brakes
- 13.17.4 DC brakes
- 13.17.5 Accessibility
- 13.17.6 Enclosures [Go to Page]
- 13.17.6.1 General
- 13.17.6.2 Open type
- 13.17.6.3 Drip proof enclosed
- 13.17.6.4 Watertight enclosed
- 13.17.7 Construction
- 13.17.8 Nameplate
- 13.17.9 Brake application
- 13.18 Magnetic friction clutches [Go to Page]
- 13.18.1 General
- 13.18.2 Nameplate
- 13.19 Bearing discharge energy due to common-mode voltage
- 14. Variable frequency drive (VFD) applications
- 15. Electric propulsion and maneuvering system [Go to Page]
- 15.1 Scope
- 15.2 Regulations
- 15.3 System requirements [Go to Page]
- 15.3.1 General
- 15.3.2 Redundancy
- 15.3.3 Safety
- 15.4 Propulsion drive transformers
- 15.5 Propulsion motors [Go to Page]
- 15.5.1 General
- 15.5.2 Propulsion motor excitation
- 15.5.3 AC propulsion motors
- 15.5.4 DC propulsion motors
- 15.6 Propulsion motor drives
- 15.7 Propulsion control
- 15.8 Podded propulsion [Go to Page]
- 15.8.1 General
- 15.8.2 Steering system
- 15.8.3 Shaft, bearing, sealing systems, and propellers
- 15.8.4 Auxiliary systems
- 15.8.5 Electrically powered pods [Go to Page]
- 15.8.5.1 Electric motor
- 15.8.5.2 Power transmission system
- 15.8.5.3 Ventilation and cooling unit
- 15.9 Propulsion cables
- 15.10 Propulsion equipment location
- 15.11 Ventilation
- 15.12 Bed-plates and foundations
- 15.13 Lubrication
- 16. Steering systems [Go to Page]
- 16.1 General
- 16.2 Navigating bridge installation
- 16.3 Power supply
- 16.4 Alarm system
- 16.5 Steering gear [Go to Page]
- 16.5.1 General
- 16.5.2 Feeder circuits
- 16.5.3 Direct-drive steering gear
- 16.6 Steering control systems [Go to Page]
- 16.6.1 General
- 16.6.2 Steering control system installation
- 16.6.3 Steering indication and alarm system
- 16.6.4 Steering failure alarm system
- 17. Lighting equipment [Go to Page]
- 17.1 General
- 17.2 Location
- 17.3 Provisions for portable lighting
- 17.4 Permanent watertight fixtures
- 17.5 Permanent non-watertight fixtures
- 17.6 High-intensity discharge lamp fixtures
- 17.7 Lighting for hazardous locations
- 17.8 Illumination [Go to Page]
- 17.8.1 General
- 17.8.2 Lighting for cargo handling
- 17.8.3 Lighting for lifeboat and life raft area
- 17.9 Searchlights [Go to Page]
- 17.9.1 General
- 17.9.2 Construction and installation
- 17.9.3 Lifeboat searchlights
- 17.10 Emergency lighting
- 17.11 Nameplates
- 17.12 Solid state lighting (SSL) [Go to Page]
- 17.12.1 Introduction
- 17.12.2 SSL LED system design features for shipboard application
- 17.13 Navigation lights and signal lights [Go to Page]
- 17.13.1 General
- 17.13.2 Navigation lights
- 17.13.3 Signaling lights
- 17.13.4 Navigation light indicator panel
- 18. Whistle and siren control systems
- 19. Heating equipment [Go to Page]
- 19.1 Construction
- 19.2 Heating elements
- 19.3 Control switches
- 19.4 Temperature
- 19.5 Nameplates
- 19.6 Electrical heat trace (EHT)
- 20. Galley equipment and workshop equipment [Go to Page]
- 20.1 Electric cooking equipment [Go to Page]
- 20.1.1 Construction
- 20.1.2 Mounting
- 20.1.3 Electric power
- 20.1.4 Heating elements
- 20.1.5 Wiring
- 20.1.6 Controls
- 20.1.7 Range tops and griddles
- 20.1.8 Ovens and broilers
- 20.1.9 Fry kettles
- 20.2 Motor-driven equipment
- 20.3 Nameplates
- 21. Electrical power system protection [Go to Page]
- 21.1 Overview
- 21.2 Electrical power system protection elements [Go to Page]
- 21.2.1 Fault detection and classification
- 21.2.2 Fault localization
- 21.2.3 Fault isolation
- 21.2.4 System reconfiguration
- 21.3 Electrical power system protection design [Go to Page]
- 21.3.1 General
- 21.3.2 Conductors
- 21.3.3 AC systems
- 21.3.4 DC systems
- 21.3.5 Fault-current calculations and overcurrent protective devices
- 21.3.6 Fixture wires and cords
- 21.3.7 Motor branch circuits
- 22. System studies, analyses, and reports [Go to Page]
- 22.1 General
- 22.2 Electric plant load analysis (EPLA)
- 22.3 Load flow analysis and voltage drop analysis
- 22.4 Dynamic analysis (transient and stability) [Go to Page]
- 22.4.1 Background
- 22.4.2 Articulation of working stability criteria
- 22.4.3 Recommended dynamic analyses/stability assessments
- 22.5 Fault current analysis
- 22.6 Harmonic and frequency analysis
- 22.7 Failure mode and effects analysis (FMEA)
- 22.8 Electromagnetic interference (EMI) analysis
- 22.9 Thermal analysis
- 22.10 Electrical power system data for the life-cycle cost analysis
- 22.11 Electrical power system data for the signature analysis
- 22.12 Safe return to port/survivability analysis
- 22.13 Future power growth assessment
- 22.14 Protective device coordination study
- 22.15 Grounding system design report
- 22.16 Electrical power system corrosion control report
- 22.17 Electrical power system input to ship’s weight report
- 22.18 Electrical power system section of the master equipment list
- 22.19 Electrical power system input to endurance fuel calculations
- 22.20 Incident energy analysis
- 23. EMI/EMC/RFI
- 24. Materials [Go to Page]
- 24.1 Corrosion-resistant parts
- 24.2 Flame-retardant materials
- 24.3 Brittle material
- 24.4 Cable selection, application, and installation
- 24.5 Electrical components
- 25. Power system grounding (earthing) [Go to Page]
- 25.1 General
- 25.2 Power system grounding
- 25.3 Grounding resistors and transformers
- 25.4 Connection point of system grounding [Go to Page]
- 25.4.1 AC system grounding
- 25.4.2 DC system grounding
- 25.4.3 Merging separately derived systems
- 25.5 Equipment grounding [Go to Page]
- 25.5.1 General
- 25.5.2 Equipment grounding methods
- 25.5.3 Grounding of portable equipment
- 25.6 Ground plates on nonmetallic ships
- 25.7 Lightning protection grounding
- 25.8 Stray current protection—Cathodic protection
- 25.9 Ground-fault detection
- 25.10 Condensation prevention
- 26. Arc flash management
- 27. Hazardous locations, installations, and equipment [Go to Page]
- 27.1 General
- 27.2 Hazardous area classification [Go to Page]
- 27.2.1 Overview
- 27.2.2 NEC and CE Code division classification systems [Go to Page]
- 27.2.2.1 Types of explosive atmosphere
- 27.2.2.2 Likelihood that the explosive atmosphere is present
- 27.2.2.3 Ignition-related properties of the explosive atmosphere
- 27.2.2.4 Maximum surface temperature of equipment
- 27.2.3 NEC and CE Code zone classification systems [Go to Page]
- 27.2.3.1 Types of explosive atmosphere
- 27.2.3.2 Likelihood that the explosive atmosphere is present
- 27.2.3.3 Ignition-related properties of the explosive atmosphere
- 27.2.3.4 Maximum surface temperature of equipment
- 27.3 Area classification for various vessel types [Go to Page]
- 27.3.1 Introduction
- 27.3.2 All vessels—General
- 27.3.3 Tank vessels and barges
- 27.3.4 Vehicle carriers and roll-on/roll-off vessels
- 27.3.5 Mobile offshore drilling units (MODUs)
- 27.3.6 Coal carriers
- 27.3.7 Dry bulk carriers other than coal carriers
- 27.4 Hazardous locations equipment protection techniques
- 27.5 Hazardous locations equipment markings [Go to Page]
- 27.5.1 NEC and CE Code division classification systems
- 27.5.2 NEC and CE Code zone classification systems
- 27.6 Approved equipment
- 27.7 Equipment installation [Go to Page]
- 27.7.1 Wiring methods
- 27.7.2 Ventilation fans
- 27.7.3 Belt drives
- 27.7.4 Battery installations
- 27.7.5 Paint storage or mixing spaces
- 27.7.6 Vehicle spaces
- 27.7.7 Tank vessels [Go to Page]
- 27.7.7.1 Distribution systems
- 27.7.7.2 Combustible liquid cargo with a closed cup flashpoint of 60 °C or higher
- 27.7.7.3 Flammable or combustible liquid cargo with a closed cup flashpoint below 60 °C (including bulk liquefied gas carriers), ammonia, liquid sulfur carriers, and inorganic acid carriers
- 27.7.7.4 Bulk carbon disulfide
- 27.7.7.5 Bulk liquefied gas or ammonia
- 27.7.8 Submerged cargo pumps
- 27.7.9 Lighting for cargo handling rooms
- 27.7.10 Branch circuits for hazardous spaces
- 27.7.11 Ungrounded distribution systems
- 27.7.12 Vessels carrying coal
- 28. Ship construction and outfitting [Go to Page]
- 28.1 Storage and installation
- 28.2 Spare parts
- 28.3 Documentation
- 28.4 Testing
- 29. System operation and maintenance [Go to Page]
- 29.1 Fire extinguishing precautions
- 29.2 Rotating machine cleanliness
- 29.3 Care of idle apparatus
- 29.4 Safety
- 29.5 Total waveform distortion measurements
- 29.6 Cathodic protection sacrificial anodes
- Annex A (informative) Bibliography
- Annex B (normative) Electric plant load analysis [Go to Page]
- B.1 Operating conditions
- B.2 Groupings
- B.3 Load factors
- B.4 Margins
- B.5 Load analysis summary
- Annex C (informative) Common-mode fundamentals [Go to Page]
- C.1 Introduction [Go to Page]
- C.1.1 Common-mode voltage and current overview
- C.1.2 Common-mode equivalent models
- C.2 Definitions and reference selection
- C.3 Neutral point
- C.4 Common-mode current
- C.5 Common-mode voltage source
- C.6 Relationship of common-mode voltages and currents to dq0 transformation
- C.7 Common-mode modeling
- C.8 Impact of asymmetry on common-mode voltages
- C.9 Impact of multiple current paths on common-mode currents
- C.10 Impact of grounding method on common-mode currents
- C.11 Managing common-mode currents and voltages
- C.12 Cable neutral conductors
- C.13 Impact of ground faults on common-mode voltages and currents
- C.14 References
- Annex D (informative) Utilizing Thévenin circuits for common-mode evaluation of power electronic systems [Go to Page]
- D.1 Introduction
- D.2 Thévenin modeling of power converters [Go to Page]
- D.2.1 Background
- D.2.2 Limitations of approach
- D.3 Characterizing TECs [Go to Page]
- D.3.1 Hardware setup
- D.3.2 Parameter extraction
- D.4 Worst-case system level CM/DM behavior
- D.5 References
- Back cover [Go to Page]