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In relation to electric what does the term fault protection mean?
Protective devices - relays, CT,PT, isolators, circuit breakers are used for fault protection. Fault protection means If there is a fault in the circuit, the circuit must be cut off before any damage occurs due to fault.
What is inter-turn fault in three phase motor?
An 'inter-turn' fault occurs when adjacent turns of the same winding are short circuited (due, for example, to insulation breakdown). This affects the turns ratio of the transformer. An 'inter-winding' fault occurs when there is a short circuit between adjacent windings (coils) due to insulation breakdown, and can lead to a catastrophic failure of the transformer.
What fuses and circuit breakers provide protection in the event of?
Short circuit fault.
Why short circuit calculation is not required for LT cables?
Lt cables has own impedance which reduce the short circuit fault level
What happens in a short circuit occurs in an electric circuit?
A short circuit is a condition whereby a point or section of the circuit offer a short path for current to return to the power supply. It occurs when two or more points or sections of the circuit touches each others (but only and only if that results in drop in resistance to such an extent that it causes excessive current to flow through.
How does the cut in voltage effects the output of a diode clipper?
For answering this question we have to consider the constant voltage drop model of the diode which says that if voltage across diode is less then its cut in voltage than assume diode to be open circuit and if it is greater then assume diode to be short circuit.Till the input voltage is less than the cut in voltage, diode is open circuit(thus no current through the circuit). Thus entire input voltage appears across the diode as output.When input voltage is greater than or equal to cut in voltage, then short circuit the diode. Thus, there will be no voltage drop across the diode as output.Thus cut in voltage decides when to consider the diode open circuit and when short circuit. It decides when the diode will have output when it will not.
In relation to electric what does the term fault protection mean?
Protective devices - relays, CT,PT, isolators, circuit breakers are used for fault protection. Fault protection means If there is a fault in the circuit, the circuit must be cut off before any damage occurs due to fault.
What is inter-turn fault in three phase motor?
An 'inter-turn' fault occurs when adjacent turns of the same winding are short circuited (due, for example, to insulation breakdown). This affects the turns ratio of the transformer. An 'inter-winding' fault occurs when there is a short circuit between adjacent windings (coils) due to insulation breakdown, and can lead to a catastrophic failure of the transformer.
What fuses and circuit breakers provide protection in the event of?
Short circuit fault.
Which circuit fault occurs when previously unconnected conductors touch one another allowing current to bypass part or all of a circuit?
If the word unconnected was changed to uninsulated then this type of scenario would be known as a short circuit.
How does a short circuit occaur?
Short circuit occurs when positive and negative terminals are connected directly.
When you will get to know that short circuit will happen?
1. That if a short circuit occurs we will get a sign before short circuit will happen or not ? 2. what we can do ? 3. how fuse can get a short circuit ? 4. which wires we have to use from preventing short circuit ?
Why short circuit calculation is not required for LT cables?
Lt cables has own impedance which reduce the short circuit fault level
What happens in a short circuit occurs in an electric circuit?
A short circuit is a condition whereby a point or section of the circuit offer a short path for current to return to the power supply. It occurs when two or more points or sections of the circuit touches each others (but only and only if that results in drop in resistance to such an extent that it causes excessive current to flow through.
How do you generate short circuit current?
A short circuit occurs when the hot side of the supply comes in contact with ground.
Four diode bridge rectifier if one diode is faulty?
if one diode is open circuited(a break in the circuit): it will act as a half wave rectifier .only +ve or -ve 1/2 cycles available at o/p. if one diode is short(more probable case due to burn out). this place a short across source for one half cycle,may destroy circuit.
The value of resistance of an short circuit?
The value of resistance when there is a short circuit varies depending on the nature of the fault, but it could be fractionally above zero or higher.
