Balkan Peninsula High Voltage Standard Capacitor Calibration
Bilateral Comparison of High-Voltage Capacitance and Dielectric ...
The capacitance change of a 100 kV compressed-gas capacitor measured by the two institutes agreed within 2 $mu text{F}$ /F over the voltage range from 10 to 100 kV. The …
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,].
Capacitance and Dissipation Factor
The capacitor is used in determining the voltage coefficients of NBS-owned commercial standard capacitors; in the calibration of customers'' standard capacitors, voltage transformers, and dividers ...
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, the voltage dependence of high-voltage (HV) capacitance, and the dielectric dissipation factor (DDF) at 50 Hz. The traveling standards included a LV standard capacitor, a …
INFLUENCE OF STANDARD CAPACITORS ON THE QUALITY OF HIGH VOLTAGE …
Keywords: standard capacitor, high-voltage test, metrological reliability. 1. INTRODUCTION ... which the transformer under calibration is the standard voltage transformer 4820. C 1 is the capacitor under evaluation, C 2 is composed of low voltage composes with 1 ...
Capacitance Standards and Decades Selection Guide: Types, …
4 · Capacitance standards and decades provide highly accurate standard capacitance values for testing, comparing, and calibrating electrical and electronic components and products. Standards usually consist of a single, fixed value component or several components not in the same circuit.
Capacitance
Please note: NMIs using the BIPM''s electrical calibration services are asked to limit the frequency of their BIPM calibrations of resistors, capacitors and electronic voltage standards (Zeners) to once every two years for the same type of standard, and to no more than three standards of the same nominal value.
Research on the reliability of capacitor voltage transformers calibration …
Based on the obtained results, it can be seen that CVT in more than 90% of its life is in good condition, and with suitable measurement quality. Moreover, the probability of CVT failure has been obtained 0.00046703, which is approximately equal to the presented ...
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 …
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 ...
GE HIGH VOLTAGE
GE high voltage capacitors meet IEC ® 60871, IEEE 18 standards; CSA ratings available GE supplies high voltage capacitor ratings and designs as follows: • Single Phase capacitors have a kVAR range from 25 to 1000 KVAR
Capacitance Standards, Decade Capacitor, 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
Standard Capacitance Reference or Working Standard
Standard Capacitance Reference or Working Standard 1409 Series Page 2 of 2 Long Island, NY IET LABS, INC. in the GenRad Tradition TEL: (516) 334-5959 † EMAIL: info@ietlabs 1409 Data Sheet/Oct. 2015 Figure 1 Change in capacitance
Technical paper A Guide for Partial Discharge Measurements on medium voltage (MV) and high voltage …
IEC 60270 – High-voltage test techniques – Partial discharge measurements is a general standard that defines the broad lines of partial discharge (PD) measurement in electrical apparatus. It is applicable for electrical measurements of PD using alternating
NIST Technical Note 1486 NIST Special Test Service for Four-Terminal-Pair Capacitance Standards …
Capacitance Standards from 0.01 μF to 100 μF Svetlana Avramov-Zamurovic‡ Andrew D. Koffman† Bryan C. Waltrip† ... method is used to calibrate 4TP standard capacitors of values from 10 nF to 100 μF. Aoki and Yokoi introduced this technique in 1997 [1 ...
HVS — High Voltage Systems | Technical Services
We provide a full range of on-site high voltage technical services including calibration, testing, commissioning and fault finding. We also have our own fully equipped ISO 9001:2015 service centre, including a HV facility for PD, Capacitance and TanDelta testing.
Capacitor mismatch calibration method for SAR ADC with …
A novel capacitor mismatch calibration method is presented to compensate the capacitor mismatches in a successive approximation register (SAR) ADC. The method features a new weight-balancing split capacitive DAC which allows automatic extraction and ...
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
Single-shot high-voltage circuit for electrical capacitance …
Capacitance values obtained from the just-described calibration are presented in table 3 for standard capacitors and table 4 for sensor A. All reference capacitances were in the range from 0.1 fF to 1 pF.
A Survey on Capacitor Voltage Control in Neutral-Point-Clamped …
The NPC converter capacitor voltage balance depends on several factors [30,31], such as the amplitude modulation index, the frequency modulation index and the …
Calibration of high voltage and high current equipment
The methods we use meet the requirements of industry standards, such as IEC 60060–2 and IEC 61869-2. Examples of calibration services: Measuring system for alternating voltage (AC) Measuring system for direct voltage (DC) Measuring system for lightning
7010C High-Voltage, Capacitance, Inductance, Tan …
Capacitor Cs (pF) Max Voltage @ 50 Hz (V) Bridge Ratio Extender Ratio Max Inductance (H) Max Inductor Current (A) 10000 3180 723 2 0.7 14.46 10000 3180 723 20 0.07 144.6 10000 3180 723 200 0.007 1446 10000 …
Determination of Voltage Dependence in High-Voltage Standard Capacitors …
Most of the investigations focused on the voltage dependence of the characteristics of the capacitors while other influence quantities keep relatively constant. Experiments had been carried out in ...
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 …
An accurate on-site calibration system for electronic voltage ...
This paper proposes a 110 kV, accurate calibration system based on a standard capacitor by detecting the capacitive current flowing through the standard …
A voltage-controlled capacitance offset calibration technique for high …
Abstract: This paper presents a high resolution and wide range offset calibration technique for high resolution comparators. The proposed calibration technique significant reduces the calibration capacitance from conventional 2 n binary-scaled capacitors array to a small voltage-controlled capacitor. ...
Method for Determining Dissipation Factor of Capacitors Without ...
An absolute and practical calibration method has been developed for determining DF of a capacitor connected to resistor in series with no dependency of a …
Comprehensive capacitance sensor calibration for high-speed …
A calibration methodology was developed for the in-situ calibration of capacitance sensors in a two-stage high-pressure turbine rig. The small turbine rotating rig is part of PETAL laboratories at Purdue University and was developed to study small core turbines at an advanced technology readiness level (TRL 5–6) [21] .
A novel capacitor recombination calibration method applied to 18 …
2. A novel capacitor recombination calibration method The capacitor reconstitution calibration method is introduced with the example of a 14-bit hybrid capacitive–resistive SAR ADC with a high M-bit capacitive DAC and a low N-bit resistive DAC, as shown in Fig. 1.If ...
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 ohmic …
Influence of standard capacitors on the quality of high voltage tests on electrical energy transmission equipments …
The voltage coefficient of compressed gas capacitors is a relevant parameter in high-voltage calibrations. These capacitors, used as standards, are calibrated at low voltages so ...
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