Construction And Repair
Linear current in three-phase circuits, phase and line voltage, alternating current circuitsConstruction And Repair
The three-phase power supply system is accepted as a standard in most countries of the world, Russia is no exception. Every house in the country is connected to such a network, but, as a rule, one ...
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Induced voltage: mechanism of occurrence and definition, hazards and protective measures, recommendationsConstruction And Repair
Electrical repair works both on high-voltage transmission lines and inside the apartment are at increased risk due to a number of factors. The most dangerous and widespread is the threat of electri...
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Voltage and current measurement: specialized and universal instrumentsConstruction And Repair
When repairing an electronic device or when operating electrical circuits, one has to face the need to measure the voltage and current of a circuit. For this, there are both special devices and uni...
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Rules for moving in the step voltage zone: the radius of the dangerous area, the way to safely go out of the contourConstruction And Repair
In the natural environment, electricity reveals itself as lightning strikes, which sometimes lead to human injury. The reason is the standing position on two legs: a potential difference arises bet...
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Voltage in an electric current circuit: definition and essence of a physical quantity, calculation and measurementConstruction And Repair
Electricity is used everywhere, and it "was always" for the vast majority of people. But hardly many thought about the nature of this phenomenon. Among the basic electrical terms, the most difficul...
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Low voltage indicator: what it is intended for and how it works, types of devices up to 1000 VConstruction And Repair
Before carrying out repair or installation work in electrical installations up to 1000 V, it is necessary to make sure that there is no current from the supply network and on the conductors. For th...
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1-phase voltage control relay: installation and connection diagram to the 220v networkConstruction And Repair
The operation of electrical networks must be safe, therefore various protection devices are used to achieve this. One of the important such devices is the 1-phase voltage monitoring relay. Its main...
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Voltage resonance: causes, uses and potential harm, AC circuitConstruction And Repair
Resonance of voltages occurs in an electrical circuit that includes several elements: a power source, an inductor and a capacitor. The listed elements are connected in series. In this case, the vol...
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How a 3-phase voltage relay works: what does a three-phase device protect against, modelsConstruction And Repair
The presence of a protective device in the electrical circuit is the key to the safe use of the electrical network. For example, the stabilizer prevents equipment breakdown in the event of a short ...
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Surge arresters (surge arresters): principle of operation, classification and scopeConstruction And Repair
Not only industrial, office, but also home electrical equipment is constantly under the threat of breakdowns, or even complete failure. The reasons for this can be both lightning discharges and fai...
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