DC Offset Component & Short Circuit Fault Current

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The discussion focuses on the DC offset component in relation to short circuit fault current, emphasizing its significance when a short circuit occurs on the secondary side of an energized transformer. The momentary DC current generated during this event is influenced by the timing within the voltage cycle, as well as the transformer's inductance and resistance ratios. The magnitude of the DC current can vary based on these factors. Additionally, IEEE Std 462-1973 is mentioned as an older standard for calculating the value of this DC current. Understanding these components is crucial for accurate fault current analysis in electrical systems.
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tell me something about
DC offset component in reference toshort circuit fault current
 
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navanath said:
tell me something about
DC offset component in reference toshort circuit fault current

You need to provide more context to your questions. What is the application? What do you know so far? What the heck are you asking about?
 
When a short is applied to the secondary of an energized transformer, there may be a momentary DC current.
The polarity and the magnitude of the current depends on what part of the voltage cycle the short circuit occurred.
The magnitude also depends on the ratio of the transformer inductance and resistance and their values.

A very old standard to calculate the value of the DC current is
IEEE Std 462-1973, Page 29
 
I am trying to understand how transferring electric from the powerplant to my house is more effective using high voltage. The suggested explanation that the current is equal to the power supply divided by the voltage, and hence higher voltage leads to lower current and as a result to a lower power loss on the conductives is very confusing me. I know that the current is determined by the voltage and the resistance, and not by a power capability - which defines a limit to the allowable...

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