Bilateral Comparison of High-Voltage Capacitance and Dielectric …
National Institute of Metrology (NIM), China and National Measurement Institute, Australia (NMIA) carried out a comparison program, which included low-voltage (LV) capacitance, …
High-Voltage Ceramic Capacitors
More Products From Fully Authorized Partners Average Time to Ship 1-3 Days.Please see product page, cart, and checkout for actual ship speed. Extra Ship Charges May Apply KEMET Electronics'' high-voltage capacitors use proprietary technologies to offer a variety of form factors, case sizes, dielectrics, and capacitance …
Design and implementation of high-precision voltage measurement system based on Kalman filter and automatic calibration …
Equating the parasitic capacitance in the high-voltage arm and C 1 to a total capacitance C 11 in parallel with R 11, ... and the second group enables the self-calibration function and sets the calibration period to 10 min. A standard DCV of 1.000118953 V is In ...
A capacitor self-calibration technique for high resolution ADCs
In this paper, a novel capacitor self-calibration technique is presented, which can be used in high resolution ADCs, such as SAR ADC and pipeline ADC. The capacitors achieve self-calibration through the adjusting capacitors array and successive approximation (SAR) logic. A 14-bit SAR ADC using capacitor self-calibration technique we proposed has …
INFLUENCE OF STANDARD CAPACITORS ON THE QUALITY OF HIGH VOLTAGE …
Keywords: standard capacitor, high-voltage test, metrological reliability . 1. INTRODUCTION The guarantee on continuity of the electric energy supply goes through equipment and installations with ...
Capacitance and Dissipation Factor | SpringerLink
Here, only the fundamental oscillation of the AC quantities is considered. As an example, Fig. 11.1a shows a plate capacitor having a lossy dielectric.When an AC voltage U is applied, the current I flowing through the capacitor has two components: a capacitive component I C leading the voltage U by 90, and a usually much smaller …
GenRad 1403 Series High Frequency Standard Capacitor
GenRad 1403 Series High Frequency Standard Capacitor
Method for Determining Dissipation Factor of Capacitors Without Reference Capacitor at Voltage…
Measurements of capacitance and dissipation factor (DF) are necessary, to reveal dielectric properties in high-voltage insulation material, standard capacitors, and fuel cells [1,2,3,4]. The DF is a dimensionless ratio of resistive power loss to reactive power, i.e., the tangent of the angle between the capacitor''s impedance vector and the negative …
Decade Box
Units use the most stable and accurate resistors and custom high voltage switches Maximum Voltages of 5000 V or 10,000 V. For 2000 V, consider the standard HRRS Series Used for calibration of Meggers and sourcing out precision high resistance.
SERIES C
Part Number Cap (µF) Max Voltage (kV) Energy (kJ) Voltage Rev % Peak Current (kA) Design Life Approx. Inductance (nH) Case Dimensions H x W x L Approx Weight 33838 120.0 10 6 80 100 1 X 10 5 35 8.0 x 14.0 x 24.1 in. (204 x 356 x 613 mm) 165 lbs
An accurate on-site calibration system for electronic voltage …
Ordinarily electronic voltage transformers (EVTs) are calibrated off-line and the calibration procedure requires complex switching operations, which will …
Design of an HV capacitor using the inherent advantage of …
A high-voltage (HV) standard capacitor of 100 pF, 12 kV (rms) is designed using the charge simulation method (CSM). CSM is a semi-analytical method …
Adapted Technique for Calibrating Voltage Dividers of AC High-Voltage …
This paper presents an adapted technique to calibrate the AC voltage divider of AC high-voltage measuring systems up to 200 kV at the Egyptian National Institute of Standards. Two identical capacitors have been used as two similar AC high-voltage capacitive dividers. Firstly, the dividing ratios of two capacitors have been …
Calibration
TECHNICAL QUESTIONNAIRE 10.101/4 Calibration by the HIGHVOLT Calibration Laboratory D-K-19153-01 for Electrical Measuring Quantities / High Voltage Measuring Systems quotation number (will be filled in by HIGHVOLT ) PERSONAL DATA fax: e-mail: *
Capacitance Standards, Decade Capacitor, …
GenRad 1403 Series High Frequency Standard Capacitor. Available in values from 0.001 pF - 1000 pF. Excellent performance at high frequencies. ISO-17025 accredited calibration included with the standard. More Info …
Calibration of High-Voltage Test Equipment
200 kV-AC RMS with special MeasuringCapacitor and Peak Voltmeter (MCF 600/200, MU 15) • Voltage dependent non-linearity is low due to the use of an advanced capacitor technology CDCT • Low temperature coefficient because of compensation of the
Calibration of High-Voltage Test Equipment
re-calibration period. The maximum re-calibration period is 5 years according to IEC 60060-2, if performance checks demonstrate that the long term stability is within the range of ± 1%. 5. Performance check of MS For most of the users there are no additional AMS
Influence of standard capacitors on the quality of high voltage tests on electrical energy transmission equipments …
M ANY calibrations of high-voltage power equipment depend on standard capacitors. This is the case of voltage transformers, high-voltage dividers [1], and tangent delta bridges, among others [2 ...
7010C High-Voltage, Capacitance, Inductance, Tan Delta Bridge
Voltage transformers can be calibrated using the 7010C and two high-voltage standard capacitors. The ratio of the capacitors is first measured at the voltage that the …
Capacitance Bridges
The world''s standard for AC resistance, low frequency inductance and Capacitance measurement 0.02% Measurement Accuracy and +/- 0.0001 Df Programmable Frequency 12 Hz - 100 kHz Widely accepted impedance meter in a metrology environment 1689 has a
Electrical and Electronics Metrology: From Quantum Standard to …
CSIR-NPL is the custodian of National standards of electrical and electronic parameters. These include DC parameters such as voltage, current and resistance; low frequency and high frequency impedance related quantities such as capacitance, inductance and
Calibration of Voltage Transformers and High
The calibration of voltage transformers and high-voltage capacitors at NIST requires the combined use of standard capacitors and the current comparator bridge. Standard capacitors have been thoroughly discussed in the literature [ 5, 6, 9,].
Determination of Voltage Dependence in High-Voltage Standard Capacitors
The voltage coefficient of pressured gas capacitors is a relevant parameter in high-voltage calibrations. These capacitors, used as standards, are calibrated at low voltages, so that it is necessary to know their variation when they are used at high voltages. Although several methods have been proposed to determine that coefficient, …
Technical paper A Guide for Partial Discharge Measurements on medium voltage (MV) and high voltage …
A Guide for Partial Discharge Measurements on medium ...
HVTEST South Africa
HVTEST South Africa - High Voltage Testing Company ...
An International Comparison of High Voltage Capacitor Calibration
The suitability of a commercially available, compressed-gas-insulated, high voltage capacitor for precise measurement of ac voltages has been examined by national …
Adapted Technique for Calibrating Voltage Dividers of AC High-Voltage …
these calibrated series capacitors to calibrate an unknown 200-kV AC high-voltage measuring system. Calibrated 200-kV high-voltage measuring system is used for accurate and precise AC high-voltages'' calibrations according to IEC 60060-2:2010 international
An accurate on-site calibration system for electronic voltage transformers using a standard capacitor …
[15] Anderson W E, Davis R S, Petersons O and Moore W J M 1978 An international comparison of high voltage capacitor calibration IEEE Trans. Power. Appar. Syst. 4 1217–23 Crossref Google Scholar [16] Latzel …
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