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Calibrations at frequencies from 50-400 Hz are avail- able over a more limited voltage range. The service for high-voltage capacitors provides measurements of capacitance and dissipation factor at applied voltages ranging from 100 V to 170 kV at 60 Hz depending on the nominal capacitance.
The National Institute of Standards and Technology (NIST) calibration service for voltage transformers and high-voltage capacitors is described. The service for voltage transformers provides measurements of ratio correction factors and phase angles at primary voltages up to 170 kV and secondary voltages as low as 10 V at 60 Hz.
The calibration resources for capacitance at low voltages (≤ 100 V) covers the interval 100 fF – 1 mF. The most commonly used method for calibration of capacitance standards in the interval 1 nF – 10 μF is substitution measurements where the object is compared to a known standard with the same nominal value.
Calibrations at frequencies from 50–400 Hz are available over a more limited voltage range. The service for high-voltage capacitors provides measurements of capacitance and dissipation factor at applied voltages ranging from 100 V to 170 kV at 60 Hz depending on the nominal capacitance.
The most commonly used method for calibration of capacitance standards in the interval 1 nF – 10 μF is substitution measurements where the object is compared to a known standard with the same nominal value. Such capacitance calibrations are carried out with an LCR-meter or a capacitance bridge.
Calibrations of high voltage capacitors can be performed up to 300 kV (for more information see the National Laboratory for high voltage and high currents) Other types of measurements can also be performed, for example, measurements of temperature coefficients.
capacitor. Knowing the characteristic of the capacitor and the applied voltage, the balance can be used as a primary force standard to measure absolute force without the need for calibration. …
Fig. 2. Internal diagram of a standard capacitor. 1—High voltage electrode. 2—Main-capacitor low-voltage-electrode. 3—Shield electrode. 4—Auxiliary-capacitor low-voltage electrode. …
high-voltage calibration. Contact. cylindrical capacitor. 3730. Capacitance: 0.1 nF Voltage: 12 kV. ... Reference Standard Capacitors with high capacitance used for high accuracy measurement …
NK SERIES, 3370 Standard Capacitors The SF6 insulated standard capacitor is used together with a C and tan delta measuring bridge (e.g. 2840). As a comparison standard for exact …
NIST Technical Note 1486 NIST Special Test Service for Four-Terminal-Pair Capacitance Standards from 0.01 μF to 100 μF Svetlana Avramov-Zamurovic‡ Andrew D. Koffman†
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 …
Pressurized gas capacitors can be used in high-voltage tests as: standards in bridge circuits for capacitance and loss factor measurement; part of potential dividers for high-
Calibration of High-Voltage Test Equipment Uwe Clauss, Stefan Maucksch, HIGHVOLT Prüftechnik Dresden GmbH, Dresden, Germany 1. Abstract The main key for accurate …
very close to the nominal value of 1000 or 100 pf. The TYPE 1404 capacitor, unlike most previous standard capacitors, can be adjusted easily with an accuracy almost equal to the precision of …
Calibrations at frequencies from 50–400 Hz are available over a more limited voltage range. The service for high-voltage capacitors provides measurements of capacitance and dissipation...
A high-voltage source, a standard capacitor with known capacitance CS and dissipation factor tan δS, and a capacitance and dissipation factor bridge are required to measure the unknown …
2. Capacitance Calibration The precision measurement of capacitors for the purpose of calibration is generally based on a national primary standard of high accuracy, secondary/working …
Pressurized gas capacitors can be used in high-voltage tests as: standards in bridge circuits for capacitance and loss factor measurement; part of potential dividers for high-
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, …
Constellation PowerLabs offers the broadest scope of high voltage calibration and testing services in the Americas, holding ISO 17025 accreditation and more. Our expertise covers high …
This paper describes two different calibration services: high-voltage capacitors and voltage transformers. At NIST these two services are per- formed using the same equipment. In fact, …
Voltage Transformer Calibration. 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 …
Calibrations at frequencies from 50–400 Hz are available over a more limited voltage range. The service for high-voltage capacitors provides measurements of capacitance …
Voltage Transformer Calibration. 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 transformer is measured at. The high …
This paper presents a comprehensive methodology for the precise calibration of high-voltage capacitance and dissipation factor (DF) bridges. The technique involves …
DOI: 10.1088/1361-6501/aaa6a0 Corpus ID: 116712121; An accurate on-site calibration system for electronic voltage transformers using a standard capacitor …
The calibration resources for capacitance at low voltages (≤ 100 V) covers the interval 100 fF – 1 mF. The most commonly used method for calibration of capacitance standards in the interval 1 …
Offset switch operation for the standard capacitor (STD) and the device under test (DUT) for different capacitance values over the frequency range of interest. ……..9