F-Term-List

G01R31/08-31/11 AA AA00
WHAT IS HANDLED
AA01 AA02 AA03 AA04 AA05 AA07 AA08 AA09
. Electric lines . . Three-phase AC . . . Cross bonds . . Electric lines for electric trains having autotransformers . . DC transmission cables . Communication cables . . Communication cables having interrupters . . Optical communication cables
AB AB00
TYPE OF INFORMATION
AB01 AB02 AB03 AB04 AB05 AB07
. Fault position . Faulty sector . Direction of fault . Faulty system . Faulty phase . Faulty equipment
AC AC00
TYPE OF FAULT
AC01 AC02 AC03 AC04 AC05 AC06 AC08 AC09
. Faulty connections . Grounding . . Leakage by underground cables . Short-circuits . Discharge . Excessive current or lightning strikes to steel towers or wires . Faulty insulation . Contact, crosstalk
AD AD00
METHODS OF LOCATING
AD01 AD02 AD03 AD04 AD05 AD07 AD08 AD09 AD10
. Surge detection . . Type A (i.e., detecting surges at one end) . . Type B, type E (i.e., generating pulses at the other end) . . Type D (i.e., synchronized counting at both ends) . . Type P (i.e., constant generation of reference pulses) . Pulse reflection . . Generation of continuous pulses . . Variants that start automatically using surges and the like . . Variants that correlate sent and received signals
AD11 AD12 AD13 AD14 AD15 AD16 AD18 AD19 AD20
. Measuring impedance, (e.g., capacitance, inductance) . . Measuring using bridges . . Using phase differences between voltage and current . . (Digital formulas) produced using sampling data . . Using information at both ends . . Using information before and after faults . Arranging multiple detectors along a line . Locating while in motion . Impressing signals for detection
AD21 AD22 AD23 AD24 AD25 AD27 AD28 AD30
. Detecting either voltage or current . Variants using characteristics of entire systems . Using cable characteristics, (e.g., stationary waves) . Variants using detecting cables . Variants using undamaged lines . Increasing faults to make detection easier . Generating surges at fault points by impressing high voltage . Detection using pressure changes, acoustics, or heat generation
AE AE00
LOCATING SIGNALS, IMPRESSED SIGNALS
AE01 AE02 AE03 AE04 AE05 AE06 AE07 AE09
. Surges . Pulses . Noise . Arcing, discharges . High frequency signals . AC electromagnetic fields (i.e., commercial frequencies) . Potential distribution, current distributions) . DC high voltage
AF AF00
MEASURED QUANTITIES
AF01 AF02 AF03 AF04 AF05
. Peak values . Time . Phase . Frequency . Zero-phase current
AG AG00
PURPOSE, OTHERS
AG01 AG02 AG04 AG05 AG06 AG08 AG09 AG10
. Controlling detection levels . Variants using switching surges . Correcting for time delays . Eliminating unwanted reflection, masking . Correcting distortions . Eliminating the effects of charging current, ground current . Eliminating unwanted signals, noise . Probe construction
AG11 AG12 AG13 AG14 AG15
. Having multiple counters, locating apparatuses . Locating in live lines . Using optical cables . Signal processing . Variants characterized by mechanical construction
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