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What is earth fault loop impedance?
An earth-fault loop is the path taken by the fault current, when an earth-fault occurs within an electrical installation, and comprises a series circuit made up ofthe utility company tranformer's low-voltage winding,the utility company's distribution cable's line conductor,the consumer's line conductor to the point of an earth fault,the consumer's earthing conductor,and the resistance of the earth path back to the transformer.The combined opposition of this series circuit to the flow of fault current is termed the earth-fault loop impedance, expressed in ohms.
If a 240V circuit is protected by a 15A simi-enclosed fused and has an electrical earth-fault loop impedance of 1.9 ohms determine the earth fault current in the event of a zero impedance earth fault?
I am assuming that its a 240 Volt AC circuit supplying an inductive load with a fault loop impedance of 1.9 ohms at the time of the short circuit. The power factor is assumed to be 0.8 The instantaneous earth fault current value would be; Current = (Voltage x Power Factor) / Impedance (240 x 0.8) / 1.9 192 / 1.9 = 101 Amps. However this may be a trick question as it doesn't ask for an instantaneous value, the fuse will limit the fault current to 15 amps and should disconnect the circuit within 0.4 seconds.
How do you calculate internal fault loop impedance?
by calculating the loop current
When a parallel LC circuit is tuned to resonance will the current be at a maximum or a minimum?
Inside the circuit loop between the inductor and capacitor the current will be at maximum. Outside the circuit the current through the LC tank circuit will be at minimum. It depends on where you are measuring it.
How does line earth loop tester find Impedance of Supply System?
OK, well Earth Loop Tester have a permanent magnet in it. When we rotate it, the flux cut the the conductor and consequently an emf is produced. As we connect the two point of the tester to the earth it complete the circuit and current start flowing through it. The ratio of voltage and current give us the Impedance of Earth.
Input impedance of current shunt feedback amplifier?
The input impedance of a current shunt feedback amplifier is the open loop impedance of the amplifier divided by 1+(A*beta)
What is the name for a one loop circuit?
It is called the loopdie loop circut.
A loop with a break in it that prevents current from flowing is called?
an open circuit.
What circuit only has one loop?
A Series circuit
A circuit in which all parts are connected in a single loop is called a?
A circuit in which all parts are connected in a single loop
Closed path where electric current can flow is called a?
I guess Electric Circuit....
In endless loop the value of i2 k10 and the loop will terminated when value of you is greater than k and the value of k is assign to 17 after the loop and it is said to endless loop why?
"In endless loop the value of i2 k10 and the loop will terminated when value of you is greater than k and the value of k is assign to 17 after the loop and it is said to endless loop why?"
