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IEEE Recommended Practice for the Design of DC Power Systems for Stationary Applications (Redline), 2020
- IEEE Std 946™-2020 Front cover
- Title page
- Important Notices and Disclaimers Concerning IEEE Standards Documents
- Participants
- Introduction
- Contents
- 1. Overview [Go to Page]
- 1.1 Scope
- 1.2 Purpose
- 1.3 Exclusions
- 2. Normative references
- 3. Definitions
- 4. Organization of this recommended practice
- 5. Description and operation [Go to Page]
- 5.1 General
- 5.2 System design considerations
- 6. Batteries [Go to Page]
- 6.1 Number of battery strings
- 6.2 Determination of battery duty cycle and battery size (capacity)
- 6.3 Installation design
- 6.4 Maintenance, testing, and replacement
- 6.5 Qualification, relevant codes, and standards
- 7. Battery chargers [Go to Page]
- 7.1 Number of chargers
- 7.2 Load sharing between paralleled chargers
- 7.3 Determination of rated output
- 7.4 Installation design
- 7.5 Output characteristics
- 7.6 Qualification
- 8. Distribution system [Go to Page]
- 8.1 System layout
- 8.2 Distribution panels
- 8.3 Available short-circuit current
- 8.4 Protective device description and rating
- 8.5 Voltage ratings for loads
- 8.6 Qualification
- 9. DC power system instrumentation, controls, and alarms [Go to Page]
- 9.1 General
- 9.2 DC power system ground detection
- 9.3 DC bus undervoltage alarm
- 9.4 Special loading considerations
- 9.5 Design features to assist in battery testing
- 9.6 Cross-tie between buses
- 10. Protection against electrical noise, lightning, and switching surges [Go to Page]
- 10.1 Electromagnetic interference (EMI), radio-frequency interference (RFI)
- 10.2 Lightning and switching surges
- 11. Spare equipment
- Annex A (informative) Bibliography
- Annex B (informative) Battery charger sizing—Sample calculations [Go to Page]
- B.1 General
- B.2 Equation
- B.3 Example 1: Power generation
- B.4 Example 2: Substation
- B.5 Example 3: Telecommunication
- Annex C (informative) Battery available short-circuit current—Sample calculations [Go to Page]
- C.1 Introduction
- C.2 Discussion
- C.3 Sample calculations for a lead-acid battery
- Annex D (informative) Battery charger and dc power system, short-circuit current contribution [Go to Page]
- D.1 Introduction
- D.2 Combined effect of currents from battery, charger, and connected inductive load
- D.3 Sample evaluation
- Annex E (informative) Effect of unintentional grounds on the operation of dc power systems [Go to Page]
- E.1 Introduction
- E.2 Discussion
- E.3 Sample evaluations
- Annex F (informative) Telecommunication-specific considerations [Go to Page]
- F.1 Telecommunication qualifications
- F.2 Telecommunication dc power system distribution design
- F.3 Telecommunication power plant location
- F.4 Telecommunication battery sizing considerations
- F.5 Filter of charging/rectification equipment
- F.6 Telecommunication rectifier/charger controls and signals
- Annex G (informative) Load sharing of chargers
- Annex H (informative) Center tapped battery design considerations
- Annex I (informative) Additional batteries in nuclear power generation applications
- Back cover [Go to Page]