Exemplos de uso de Short-circuit currents em Inglês e suas traduções para o Português
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Protection of circuits against short-circuit currents.
When the short-circuit currents exceed 5 kA, the arc can become very dangerous violent expulsion of gas with explosive phenomenon.
Very good dissipation of short-circuit currents.
The short-circuit currents are the main responsible factor for mechanical displacements of electrical origin, due to the high intensity of the currents involved.
Circuit(the group line)only on the short-circuit currents.
When the internal fault occurs,the sum of the short-circuit currents supplied by each side flows into the differential relay, and the differential relay operates.
Such problems were researched andthose related to the impacts on short-circuit currents were emphasized.
A spreadsheet was developed in order to calculated the short-circuit currents and it was validated comparing its results to those of a commercial network analysis software.
Because of these undesirable possibilities is necessary for the switchgear and controlgear assemblies are designed and constructed to limit the thermal anddynamic effects caused by short-circuit currents.
Output current,(2500V, the output is greater than 25mA), short-circuit currents greater than 40mA.
Abstract The high short-circuit currents Voltage Source Converters(VSCs) which also have a rapid rise rate, are still a challenge for High Voltage Direct Current(HVDC) multiterminal systems reliability.
Upon closing, it must be able to withstand short-circuit currents for a conventional time of 1s I cw.
Decreased mechanical stiffness of the assembly has the effect to allow winding displacement, vibrations and connection fatigue,thus reducing the capacity of the transformer to bear short-circuit currents and voltage surges.
The purpose of this thesis is to analyse the impacts of distributed generation on short-circuit currents and protection of the distribution utilities medium voltage networks using a parametric approach.
The utilities technical standards were also explored as their requirements affect the short-circuit currents e.g. the transformers connections.
Among the aforementioned impacts, there is the increase of the shortcircuit level in the distribution network, since high short-circuit currents may exceed the capabilities of equipment to support the dynamic and thermal stresses and also cause loss of coordination between the overcurrent protection devices.
Most faults in power transformersis of dielectric origin, related to insulation damage due to mechanical deformations, caused by the high short-circuit currents in the windings, reducing the life of the equipment.
In this work, different methods that allow transforming large systems into simple circuits were analyzed, such as the equivalent circuit between generators and loads,based on the calculation of short-circuit currents; the network reduction technique for eliminating intermediate buses; and the thévenin equivalent.
Contact burns when breaking a large short-circuit current.
Opening, closing the rated current, and breaking the short-circuit current.
Thermal resistance to the calledground short-circuit current.
The protection and control switchgear,usually eliminate the short-circuit current in less time than 1 second through protective relays and operating devices.
Compared with the two, the short-circuit current is several hundred times different from the breakdown current. .
A short-circuit current is interrupted by protection devices(fuses or automatic switches) within the time set according to the tripping characteristic.
Measurement of Capacitive Tests Because the output short-circuit current is greater than 1.6mA, it is easy to rapidly increase the test voltage to the rated output voltage.
The dead zone orthe malfunction of the protection system causes the transformer winding to withstand the short-circuit current for too long.
The reason for this may be that the test piece is short-circuited under high voltage and the short-circuit current is large, so all the lights are on.
Can be used to open or close loading current, over-loading current and short-circuit current.
In the closed position, it can carry the normal circuit current and, for a specified time,even an anomalous circuit current, such as, for example, a short-circuit current.
Therefore, the series resonance can effectively find the insulation weakness, andthere is no big short-circuit current to burn the fault point.