Precision Electrical Measurements |
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Page P-7
... screen ( ref.4 ) , ( c ) providing a capacitance screen from an extended metal electrode at the high- voltage end ( ref.5 ) . Radiation from the generator introduces high - frequency disturbances into the wave- front , and this ...
... screen ( ref.4 ) , ( c ) providing a capacitance screen from an extended metal electrode at the high- voltage end ( ref.5 ) . Radiation from the generator introduces high - frequency disturbances into the wave- front , and this ...
Page P-4
... screen to the lower sphere and sometimes between screens . If excess voltage was applied to the gap , however , so that the flashover occurred on the wavefront , flashover took place between the spheres . But , with negative impulses ...
... screen to the lower sphere and sometimes between screens . If excess voltage was applied to the gap , however , so that the flashover occurred on the wavefront , flashover took place between the spheres . But , with negative impulses ...
Page P-4
... screen . neutral current after replacement of screen . ( b ) CONCLUSIONS The fact that slight irregularities revealed by the oscillograms may correspond to serious faults suggest additional test requirements . to : - Some of the causes ...
... screen . neutral current after replacement of screen . ( b ) CONCLUSIONS The fact that slight irregularities revealed by the oscillograms may correspond to serious faults suggest additional test requirements . to : - Some of the causes ...
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Common terms and phrases
accuracy adjusted admittance alloys alternating amplifier amplitude applied breakdown voltage bridge British Electricity Authority C₁ C₂ calculated calibration capacitor divider cavity chopped wave circuit cm spheres coil compressed gas capacitor conductor connexion constant constantan copper detection detector diameter dielectric dielectric constant direct current earth capacitance effect electrical electrode Engrs error factor fault field flashover flashover voltage full wave heater high-voltage impedance impulse tests impulse voltages inductance inductors Instn instrument insulation kc/s kV eff low-voltage magnetic manganin material Mc/s method microseconds Mumetal National Physical Laboratory neutral current obtained ohms oscillator oscillograms output paper permeability permeameter permittivity possible potentiometer power frequency precision ratio recording rectifier resistor resistor divider resonance sample screen short-circuit shown shunt specimen sphere-gap stability standard temperature coefficient terminal test object thermal converters thermocouple time-constant transformer tube voltage divider voltmeter wattmeter winding wire zero