NFPA
70B: Recommended Practice for Electrical Equipment Maintenance,
2019 Ed.
Apply the 2019 edition of NFPA 70B along
with NFPA 70E® to maintain electrical
systems correctly and safeguard your personnel, your facility, and
your business.
Electrical systems maintenance helps protect
workers, avoid equipment downtime, and reduce the cost of repairs.
In fact, proper maintenance is absolutely essential to the safety of
your facility and your employees.
Get guidance you can trust in NFPA 70B,
Recommended Practice for Electrical Equipment Maintenance.
NFPA 70B details
preventive maintenance for electrical, electronic, and communication
systems and equipment -- such as those
used in industrial plants, institutional and commercial buildings,
and large multi-family residential complexes.
Used alongside the requirements in
NFPA 70E®, Standard for Electrical Safety
in the Workplace® NFPA 70B helps facility managers develop and carry
out an effective Electrical Preventive Maintenance (EPM) program for
all types of equipment and assemblies. Contractors look to NFPA 70B
for information about properly servicing equipment, and designers
depend on it for developing specifications for installation that
take maintenance into account.
Updates in NFPA 70B
coordinate with NFPA 70E and the "dot" standards from the Institute
of Electrical and Electronics Engineers (IEEE).
- New recommendations for performing a
maintenance-related design study correlate with the latest
edition of NFPA 70E.
- New references help you identify content
covered in approximately 70 IEEE "dot" standards in the IEEE
3000 Standards Collection™, replacing references to the IEEE
Color Books.
NFPA 70B chapters
address every aspect of equipment maintenance:
- Planning and developing an Electrical
Preventive Maintenance (EPM) program
- Personnel safety
- Fundamentals of electrical equipment
maintenance
- System studies
- Power quality
- Testing and test methods
- Maintenance of electrical equipment
subject to long intervals between shutdowns
- Ground-fault protection
- Grounding
- Plus detailed chapters on many different
types of assemblies, equipment, cables, and devices
Stay focused on safety and your bottom line
with NFPA 70B. Maintain equipment and develop your EPM using the
latest guidance from the field
(Softbound, 295 pp., 2019
Contents:
NFPA 70B Recommended
Practice for Electrical Equipment Maintenance
2019 Edition:
Chapter 1 Administration
1.1 Scope
1.2 Purpose
Chapter 2 Referenced Publications
2.1 General
2.2 NFPA Publications
2.3 Other Publications
2.4 References for Extracts in Recommendations Sections
Chapter 3 Definitions
3.1 General
3.2 NFPA Official Definitions
3.3 General Definitions
Chapter 4 Why an Effective Electrical
Preventive Maintenance (EPM) Program Pays Dividends
4.1 Why EPM?
4.2 Value and Benefits of a Properly Administered EPM
Program
4.3 EPM and Energy Conservation
4.4 Case Histories
Chapter 5 What Is an Effective Electrical
Preventive Maintenance (EPM) Program?
5.1 Introduction
5.2 Essential Elements of an EPM Program
5.3 Planning an EPM Program
5.4 Personnel
5.5 Survey and Analysis
5.6 Programmed Inspections
Chapter 6 Planning and Developing an
Electrical Preventive Maintenance (EPM) Program
6.1 Introduction
6.2 Survey of Electrical Installation
6.3 Identification of Critical Equipment
6.4 Establishment of a Systematic Program
6.5 Methods and Procedures
6.6 Maintenance of Imported Electrical Equipment.
6.7 Maintenance of Electrical Equipment for Use in Hazardous
(Classified) Locations.
6.8 Outsourcing of Electrical Equipment Maintenance
6.9 Emergency Preparedness and Electrical System and
Equipment Restoration (EPnSR)
6.10 Counterfeit Components, Devices,
Tools and Equipment
Chapter 7 Personnel Safety
7.1 Introduction
7.2 Grounding of Equipment to Provide Protection for
Electrical Maintenance Personnel
Chapter 8 Fundamentals of Electrical
Equipment Maintenance
8.1 Design to Accommodate Maintenance
8.2 Scheduling Maintenance.
8.3 Equipment Safety
8.4 Protective Scheme
8.5 Acceptance Testing.
8.6 Guidelines and Impact of Additions/Rework to
Retrofitting Equipment
8.7 Equipment Cleaning
8.8 Special Handling and Disposal Considerations
8.9 Supervisory Control and Data Acquisition (SCADA) Systems
8.10 Lubrication
8.11 Threaded Connections and Terminations.
Chapter 9 System Studies
9.1 Introduction
9.2 Short-Circuit Studies
9.3 Coordination Studies
9.4 Load-Flow Studies
9.5 Reliability Studies
9.6 Risk Assessment Studies.
9.7 Maintenance-Related Design Study.
Chapter 10 Power Quality
10.1 Introduction
10.2 Harmonics
10.3 Transients (Surges)
10.4 Voltage Sags and Swells
10.5 Long-Duration Undervoltages and Sustained Voltage
Interruptions
10.6 Unbalanced Voltages and Single Phasing
10.7 Symptoms — Grounding
10.8 Noise in Electrical and Electronic Systems
10.9 Interharmonics
10.10 Voltage Fluctuations and Flicker
10.11 Power Quality Audit
10.12 Power Quality References
Chapter 11 Testing and Test Methods
11.1 Introduction
11.2 Acceptance Tests and Maintenance Tests
11.3 As-Found and As-Left Tests
11.4 Frequency of Tests
11.5 Special Precautions and Safety
11.6 Qualifications of Test Operators
11.7 Test Equipment
11.8 Forms
11.9 Insulation Testing
11.10 Low Voltage Circuit Breakers.
11.11 Transformer Tests
11.12 Protective Relays
11.13 Grounding Systems.
11.14 Battery Testing
11.15 Switches
11.16 Medium and High Voltage Circuit Breakers
11.17 Infrared Inspection
11.18 Fuses
11.19 Insulating-Liquid Analysis
11.20 Rotating Machine Testing
11.21 Cables
11.22 Adjustable-Speed Drive Testing
11.23 Switchgear and Switchboard Assemblies
11.24 Surge Arresters
11.25 Power Factor Correction Capacitors
11.26 Emergency Systems
11.27 Test or Calibration Decal System
Chapter 12 Maintenance of Electrical
Equipment Subject to Long Intervals Between Shutdowns
12.1 Introduction
12.2 General Aspects of Maintaining Medium- and Low-Voltage
Distribution Systems
12.3 Utilization
12.4 Process Instrumentation and Control
Chapter 13 Ground-Fault Protection
13.1 Introduction
13.2 Ground-Fault Protective Equipment for Excessive Leakage
Currents
13.3 Ground-Fault Protective Equipment to Prevent Damage
Chapter 14 Grounding
14.1 Introduction
14.2 Symptoms and Causes of Inadequate Grounding
14.3 Grounding System Inspection, Testing, and Monitoring
14.4 Solutions to Inadequate Grounding
Chapter 15 Substations and Switchgear
Assemblies
15.1 Substations
15.2 Switchgear Assemblies
15.3 Circuit Interrupters
15.4 Air Circuit Breakers
15.5 Vacuum Circuit Breakers
15.6 Oil Circuit Breakers
15.7 Interrupter Switches
15.8 Gas-Insulated Substations and Gas-Insulated Equipment
15.9 Auxiliary Equipment
15.10 Torque Tables
Chapter 16 Motor Control Equipment
16.1 Introduction
16.2 Components and Maintenance of Motor Controls
16.3 Enclosures
16.4 Bus Bar, Wiring, and Terminal Connections
16.5 Disconnects
16.6 Molded Case Breakers
16.7 Fuses
16.8 Contactors
16.9 Motor Overload Relays — Thermal Types
16.10 Pilot and Miscellaneous Control Devices
16.11 Interlocks
Chapter 17 Insulated-Case/Molded-Case
Circuit-Breakers
17.1 Introduction
17.2 Application Considerations
17.3 Phase-Fault Current Conditions
17.4 Ground-Fault Tripping
17.5 Types of Insulated-Case/Molded-Case Circuit Breakers
17.6 Special-Purpose Breakers
17.7 Types of Maintenance
17.8 Inspection and Cleaning
17.9 Loose Connections
17.10 Mechanical Mechanism Exercise
17.11 Electrical Testing
Chapter 18 Fuses
18.1 Fuses Rated 1000 Volts or Less
18.2 Fuses Rated over 1000 Volts
Chapter 19 Power Cables
19.1 Introduction
19.2 Visual Inspection
19.3 Aerial Installations
19.4 Raceway Installations
19.5 Testing
19.6 Inspection and Testing Records
Chapter 20 Cable Tray and Busway
20.1 Introduction
20.2 Cable
20.3 Cable Tray
20.4 Low-Voltage (600-Volt) Busway
Chapter 21 Power and Distribution
Transformers
21.1 Introduction
21.2 Liquid-Filled Transformers
21.3 Dry-Type Transformers
Chapter 22 Electronic Equipment
22.1 Introduction
22.2 Reasons for Maintenance
22.3 Special Precautions
22.4 Preventive Maintenance Operations
Chapter 23 Lighting
23.1 Introduction
23.2 Cleaning
23.3 Relamping
23.4 Voltage
23.5 Lamps and Ballasts
23.6 Disposal
Chapter 24 Wiring Devices
24.1 Introduction
24.2 Connector and Receptacle
24.3 Receptacles
24.4 Adapters
24.5 General-Use Snap Switches
24.6 Cover Plates
24.7 Boxes
24.8 Pin and Sleeve Devices
Chapter 25 Rotating Equipment
25.1 Introduction
25.2 Safety Precautions
25.3 Stator and Rotor Windings
25.4 Brushes, Collector Rings, and Commutators
25.5 Bearings and Lubrication
25.6 Cleaning and Drying Insulation Structures
25.7 General Overhaul
25.8 Records
25.9 Testing
25.10 Energy Efficiency of Motors
Chapter 26 Vibration
26.1 Introduction
26.2 Machine Vibration
26.3 Types of Instruments
26.4 Resonance
26.5 Methods of Balance
26.6 Assembly and Installation Guidelines
26.7 Baseline Data
26.8 Noise
Chapter 27 Hazardous (Classified) Location
Electrical Equipment
27.1 Types of Equipment
27.2 Maintenance of Electrical Equipment for Use in
Hazardous (Classified) Locations
Chapter 28 Uninterruptible Power Supply (UPS)
Systems
28.1 Introduction
28.2 Types of UPS Systems
28.3 UPS System Maintenance Procedures — General
28.4 UPS Testing
28.5 System Tests
Chapter 29 Portable Electrical Tools and
Equipment
29.1 Introduction
29.2 Employee Training
29.3 Maintenance
29.4 Cord and Attachment Plug Care
29.5 Extension Cords
29.6 Major Overhauls
29.7 Leakage Current Testing
Chapter 30 Reliability-Centered Maintenance (RCM)
30.1 Reliability-Centered Maintenance (RCM)
30.2 Operations and Maintenance (O&M) Documentation
30.3 Technical Support
30.4 Availability Metric.
Chapter 31 EPM from Commissioning (Acceptance
Testing) Through Maintenance
31.1 Introduction
31.2 Purpose
31.3 Requirements
31.4 Commissioning Planning Stages
31.5 Developing of Functional Performance Tests (FPTs)
31.6 Testing Implementation
31.7 Costs of Commissioning
Chapter 32 Electrical
Disaster Recovery

32.1 Introduction
32.2 Catastrophic Event Categories
Chapter 33 Photovoltaic
Systems

33.1 Introduction
33.2 Maintenance of the Photovoltaic System
33.3 Markings and Labeling
Chapter 34 Electric
Vehicle Charging Systems

34.1 Introduction
34.2 Maintenance of the Electric Vehicle Charging Stations
Chapter 35 Wind Power
Electric Systems and Associated Equipment

35.1 Introduction
35.2 Towers and Fountains
35.3 Yaw Systems
35.4 Generators
35.5 Pitch Systems
35.6 Instrumentation and Controls
35.7 Supervisory Control and data Acquisition System (SCADA)
35.8 Transformers and converters
35.9 Circuit Breakers
35.10 Cable Support Systems, Cables and Terminations
35.11 Collector Substations and Switchgear
35.12 Associated Electrical Equipment
35.13 Power Quality
Annex A Explanatory Material
Annex B How to Instruct
Annex C Bibliography
Annex D Informational References
Annex E Suggestions for Inclusion in a Walk-Through Inspection
Checklist
Annex F Symbols
Annex G Diagrams
Annex H Forms
Annex I NEMA Configurations
Annex J Primary Contact Matrix
Annex K Long-Term Maintenance Guidelines
Annex L Maintenance Intervals
Annex M Equipment Storage and Maintenance During Construction
Annex N Reliability Centered Maintenance
Annex O Energy Efficiency of Motors
Annex P Identification of Transformers by Cooling Class
Annex Q Case Histories
Annex R Informational References
Index
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