High-voltage Measurement Techniques |
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Page 71
... error in capacitance dividers also , but this is constant rather than frequency dependent as in resistance dividers . 1 2 Assuming a normal divider , C1 < C2 and C ̧ < C1 , the equivalent circuit in Fig . 62 may be simplified to the ...
... error in capacitance dividers also , but this is constant rather than frequency dependent as in resistance dividers . 1 2 Assuming a normal divider , C1 < C2 and C ̧ < C1 , the equivalent circuit in Fig . 62 may be simplified to the ...
Page 135
... error by means of an electronic amplifier . Another device , by Vogel , affords very good compensation for frequency - dependent errors [ 306 ] . A relatively simple way to compensate for frequency - dependent errors , developed by ...
... error by means of an electronic amplifier . Another device , by Vogel , affords very good compensation for frequency - dependent errors [ 306 ] . A relatively simple way to compensate for frequency - dependent errors , developed by ...
Page 138
... error or , more easily , by a digital computer . Evaluation of v1 ( t ) or v2 ( t ) at time t * yields the maximum voltage across C ,. The amplitude error 8 is then found as : v2 ( t * ) — V1 max δ = V1 max With a known waveform v1 ( t ) ...
... error or , more easily , by a digital computer . Evaluation of v1 ( t ) or v2 ( t ) at time t * yields the maximum voltage across C ,. The amplitude error 8 is then found as : v2 ( t * ) — V1 max δ = V1 max With a known waveform v1 ( t ) ...
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Common terms and phrases
ac voltages amplifier Arch ATM-Blatt C₁ C₂ calculated calibration capacitive dividers capacitive voltage divider capacitor cathode-ray oscilloscope characteristic impedance charging current coaxial cable components conductor connected constant corona designed detection impedance device dielectric diode dissipation factor dissipation-factor measurements distributed stray ground electromagnetic interference electrometer electronic electrostatic voltmeter Elektrot equation equivalent circuit error evaluated high-frequency high-ohmic IEEE impulse voltages input instrument insulation leads loading effect low-ohmic resistors low-voltage arm measurement of high Messen Messung method null detector ohmic oscillations oscilloscope output voltage parallel capacitance partial discharge peak value phase angle potential probe R₁ R₂ ratio resistor risetime Rogowski coil Schering Schering bridge shown in Fig shunt signal cable skin effect spark gap sphere gap standard capacitor static electrification step response storage capacitor stray ground capacitances surge Techn Tektronix terminal test object Trans tube unit length V₁ v₂ voltage divider voltage drop voltmeter waveform West Germany