UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
7-2
TEMPORARY GROUNDING OF SUBSTATION
CURRENT-CARRYING EQUIPMENT COMPONENTS ..........
7-3
7-3
AERIAL LIFT TRUCK VEHICLE GROUNDING ...........................
7-5
7-4
TEMPORARY GROUNDING OF UNDERGROUND LINES ........
7-7
7-5
OPENING OR SPLICING DEENERGIZED CONDUCTORS .......
7-7
7-6
GROUNDING FOR STRINGING AND REMOVING LINES .........
7-8
7-7
TEMPORARY GROUNDING OF AERIAL LINES ........................
7-10
CHAPTER 8 ENERGIZED LINE WORK
Paragraph
8-1
WORK ON ENERGIZED CIRCUITS ............................................
8-1
8-1.1
Energized Work Permit .................................................................
8-1
8-1.2
Categories of Work .......................................................................
8-2
8-2
ENERGIZED WORK RULES........................................................
8-3
8-2.1
Permitted Work .............................................................................
8-3
8-2.2
Personal Protective Equipment ....................................................
8-3
8-2.3
Statement of Qualifications ...........................................................
8-3
8-2.4
Work Methods for Voltage Levels .................................................
8-3
8-2.5
Pre-Work Procedures ...................................................................
8-6
8-2.6
General Job-in-Progress Procedures ...........................................
8-6
CHAPTER 9 SUBSTATIONS AND SWITCHGEAR
Paragraph
9-1
SUBSTATION WORK...................................................................
9-1
9-1.1
Purpose of Substation ..................................................................
9-1
9-1.2
Diagrams and Schematics ............................................................
9-1
9-1.3
Engineering Guidance ..................................................................
9-1
9-1.4
System Operation .........................................................................
9-1
9-1.5
Abnormal Conditions ....................................................................
9-2
9-1.6
Defective Equipment.....................................................................
9-2
9-2
SWITCHING .................................................................................
9-2
9-2.1
Air Switches ..................................................................................
9-3
9-2.2
Oil Switches ..................................................................................
9-4
9-2.3
SF6 Switches ................................................................................
9-4
9-2.4
Oil-Filled Vacuum Switches ..........................................................
9-4
9-3
FUSES ..........................................................................................
9-5
9-3.1
Characteristics ..............................................................................
9-5
9-3.2
Fuse Handling...............................................................................
9-5
9-3.3
Operation of Energized Fuses ......................................................
9-5
9-3.4
Open Fuse Holder ........................................................................
9-5
9-3.5
Closed-Position Fuse Locking ......................................................
9-5
9-3.6
Bypassing .....................................................................................
9-5
9-4
ENERGY STORING PROTECTIVE DEVICES ............................
9-6
9-4.1
Electrical Charge ..........................................................................
9-6
9-4.2
Surge Arresters.............................................................................
9-6
9-4.3
Choke Coils ..................................................................................
9-6
9-4.4
Capacitors.....................................................................................
9-6
9-4.5
Coupling Capacitors .....................................................................
9-7
9-5
INSTRUMENT TRANSFORMERS ...............................................
9-8
9-5.1
Potential (Voltage) Transformers (PT) ..........................................
9-8
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