MIL-HDBK-1025/10
...................................................................................................... PAGE
6.5.2
Oil Switches.......................................................................................... 56
6.5.3
Similar Switching Sections .................................................................... 56
6.6
Fusing Safety ........................................................................................ 56
6.6.1
Fuse Handling ....................................................................................... 56
6.6.2
Operation of Energized Fuses................................................................ 56
6.6.3
Open Fuse Holder ................................................................................. 57
6.6.4
Closed-Position Fuse Locking ............................................................... 57
6.6.5
Bypassing.............................................................................................. 57
6.7
Energy-Storing Protective Device Safety............................................... 57
6.7.1
Surge Arresters ..................................................................................... 57
6.7.1.1
Surge Arrester Contact ......................................................................... 57
6.7.1.2
Disconnecting Surge Arresters .............................................................. 57
6.7.2
Choke Coils .......................................................................................... 58
6.7.3
Capacitors............................................................................................. 58
6.7.3.1
Capacitor Discharge Circuits ................................................................. 58
6.7.3.2
Coupling Capacitors.............................................................................. 58
6.8
Instrument Transformer Safety .............................................................. 58
6.8.1
Voltage (Potential) Transformers .......................................................... 59
6.8.1.1
Fuse Replacement ................................................................................. 59
6.8.1.2
Supervisory Requirements..................................................................... 59
6.8.2
Current Transformers ............................................................................ 60
6.8.2.1
Circuit Opening..................................................................................... 60
6.9
Power Transformer and Regulator Safety .............................................. 60
6.9.1
Power Transformers.............................................................................. 60
6.9.2
Voltage Regulators ............................................................................... 61
6.10
Metal Clad Switchgear Safety ............................................................... 61
6.10.1
Before Circuit Breaker Drawout Requirements ..................................... 61
6.10.2
Circuit Breaker Maintenance ................................................................. 62
6.10.3
Safety Precautions After Circuit Breaker Maintenance........................... 62
6.11
Network Protector Safety ..................................................................... 62
6.11.1
Closing Network Protectors .................................................................. 63
6.11.2
Network Protector Maintenance Safety ................................................. 63
6.11.3
After Network Protector Maintenance................................................... 64
6.12
Storage Battery Safety .......................................................................... 64
6.13
Requirements for Safely Phasing or Connecting of Circuits.................... 65
7.1
Pole Line Work Environment ................................................................ 66
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