Electrical Measurement Articles & Analysis
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A study on the feasibility of wrist pulse determination using electrical impedance measurement
The results presented in the present paper are concentrated on the determination of pulse using electrical impedance method at the wrist level. The electric field distribution in an arm segment was estimated by simulation of the electric field changes due to conductivity modifications determined by pulse. It was found that the motion induced conductivity changes, due to arm geometry deformation, ...
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Africa Sub meter from YTL metering
The African real estate market is booming with new commercial and residential developments, and with it comes the growing demand for effective monitoring and billing of electricity consumption by tenants. Using sub meters, such as those provided by YTL metering, enables landlords and owners to manage their electricity consumption more reliably and accurately. What is a sub meter? It is a kind ...
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Electricity meter sampling device description
In our daily life, we can't live without electricity, we need to use the equipment of electricity, the consumption of electricity needs to be traded fairly, the electronic multi-function meter as electricity measurement instrument is the basis for the operation and settlement of electric power enterprises, is also an important link in the security of the power grid, the livelihood of the majority ...
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Electricity meters have so many ways to supply electricity
December 08, 2022 Electricity meter is used to measure the electrical energy meter, also known as electricity meter, fire meter, kilowatt hour meter. Electricity measurement is an important part of the production and operation activities of power enterprises and the safe operation of the power grid. Trade settlement, assessment of the power system economic and technical indicators are ...
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Calcite precipitation from aqueous solutions with different calcium and hydrogen carbonate concentrations
This paper describes the influence of different Ca2 + and HCO3− concentrations on the precipitation of calcite in aqueous solutions. Mixtures of CaCl2 and NaHCO3 solutions with different concentrations were stirred, covering a wide range of supersaturation and precipitation of calcite. The resulting reduction of the Ca2 + concentration was recorded as a function of time by measuring the ...
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Electric Powertrain Measurement on Hydrofoil - Case Study
Quadrofoil, Slovenia The Quadrofoil Q2 has been characterized as an “ecologically-sound electric hydrofoil sports car for the water”. For a complex product such as this, it is necessary to continuously carry out extensive measurement procedures with test equipment. Dewesoft has helped Quadrofoil in measuring the performance of the electric powertrain of their prototype hydrofoil ...
By DEWESoft
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The meaning and values of YTL (Yongtailong brand)
At the beginning of each company's birth, the name is given a certain expectation, and Yongtailong is of course no exceptio Yongtailong in Chinese, the usual interpretation is always prosperous , which means the business continues to grow and flourish. In English, Yongtailong is usually abbreviated as YTL (yongtailong), which means Young, Trustable, Leading. Core values Concept It is the most ...
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What is the difference between electronic electricity meter and mechanical energy meter?
What is the difference between electronic electricity meter and mechanical energy meter?https://www.ytl-e.com/news/quarterly-publication/what-is-the-difference-between-electronic-electricity-meter-and-mechanical-energy-meter.htmlBoth mechanical and electronic electricity meter are metering devices for measuring electricity consumption and have played a crucial role in measuring electricity ...
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why do power meter need anti-temper function?
ith the increasing demand of users for electric energy, some users take various methods of stealing electricity in order to obtain electric energy free of charge. Not only does it causes a large amount of loss of electrical energy and a great economic loss to the power supply organization, but also disrupts the normal power supply order and poses a safety hazard to the power users. There are many ...
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Correlating empirical data and extended topological measures in power grid networks
Power grids are considered complex networks. Their structure and dynamics have been thoroughly studied and many topological measures have been used to classify them, evaluate their behaviour or model their response to malfunctions. Results have been theoretical and correlations between real dynamical behaviour (i.e., major events) and structural measures have not yet been found. New electrically ...
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Instantaneous voltage measurement technique for PWM voltage source inverters
The pulse width modulated (PWM) voltage source inverter (VSI) is almost universally used in industrial motor drives. Although measurement of the VSI output voltage is required in many applications, accurate measurement is problematic due to the high frequency inverter switching. Many commonly used inverter output voltage measurement methods, such as indirect and direct voltage measurement, ...
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The Iterative History of Electricity Meters
Electricity meters have come a long way since their inception in the late 1800s. The first electricity meters were simple devices that measured the amount of electricity consumed by a household or business. They were mechanical in nature and relied on a spinning disk to measure the amount of electricity that was being used. Over time, these simple devices became more sophisticated and started to ...
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The Accuracy Issue of Household Electric Meters
Introduction Electricity is an essential part of our daily lives, and the accurate measurement of electricity consumption is crucial for both consumers and utility providers. However, there have been concerns raised about the accuracy of household electric meters. In this essay, we will explore the accuracy issue of household electric meters and discuss the potential implications of inaccurate ...
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Electricity Theft: The crime that nobody talks about
Electricity theft is often an “invisible” crime. Someone illegally taps into a power supply, hooks up a line that has been disconnected, or tampers with a meter to avoid recording electricity usage. For example, some people will reverse their meters so they run backwards, others with crack the meter seal open and place mechanical brakes to slow the meter wheel down. Indeed, many ...
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Techno-economics of micro-hydro power plants for remote villages in Uttaranchal in India
Results of a techno-economic feasibility evaluation of some micro-hydro power (MHP) plants being planned and implemented for remote village power supply in the state of Uttaranchal in India are presented. The capital cost of MHP plants in the capacity range of 20–100 kW (including cost of local transmission and distribution system), investment requirement per unit of rated capacity, and relative ...
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Is it better to choose a larger current specification when selecting an electricity meter?
When selecting an electricity meter, whether a larger current specification is better is a question worthy of in-depth exploration. In fact, the answer to this question is not absolute, but rather needs to be weighed based on specific usage scenarios and requirements. Below, I will analyze and discuss this issue in detail from multiple perspectives.1. The basic relationship between current ...
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What is the accuracy class of energy meter?
Is there a difference between Class 1 energy meters and Class B energy meters?As a measuring device for electrical energy, the accuracy class of energy meter is very important and relates to the accuracy and fairness of energy measurement. If the accuracy class of energy meter is too low, it will result in a significant error in measurement, which will affect the interests and fairness of users. ...
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Harmonics impacts evaluation for single-phase traction load
A planned electric utility substation supplying the single-phase traction load at New Haven, CT, USA was evaluated with regard to several important aspects of power quality. Harmonics: the trains are non-linear and time-varying loads. Harmonic current levels were measured at a nearby single-phase traction substation, which serves the same line as the future New Haven substation. These results ...
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IEC energy meters lead the global trend
IEC energy meters lead the global trendIEC is an international standardization organization dedicated to the development of international standards, including in power systems and electronic equipment. IEC energy meter standard is a standard developed and issued by the International Electrotechnical Commission (IEC) to establish a unified standard for electrical, electronic and related ...
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The electricity meter follows the new development trend of the EV charging station
Currently, pure electric vehicles can not completely replace gasoline vehicles. For users, the priority problem is battery sustainability. For premium and middle-end electric vehicles are able to 500km pure electric battery sustainability. Actually should take many factors into consideration, electric vehicles are able to 400km basically. This range is similar with traditional gasoline vehicles. ...
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