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What is the purpose of blow out coil with laminated core in ac power contactor?
Wiki User
∙ 12y ago
The laminations reduce a core loss called Eddy Currents, which are set up in the core by the ever changing AC current.
Wiki User
∙ 12y ago
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What happens if a circuit has no resistance?
Then the voltage in will equal the voltage out. The purpose of a resistor is to reduce the amount of electrical flow of current. You 'short out' the supply and blow a fuse/circuit breaker.
Can fast blow fuse used in place of slow blow fuse?
No. A slow blow fuse is intended to survive a short overload from the startup of a piece of equipment, usually a motor or power supply. If you use a fast blow fuse in this application, it will tend to blow unexpectedly.Motors usually pull four times their rated running current on startup, but only for a very short period of time. The slow blow fuse, or slow trip circuit breaker, is designed to handle this. Similarly, power supplies need to charge the primary filter capacitor from zero voltage in one line cycle on startup. Worst case is turning on the power switch at the peak of the line cycle. Inductance of the transformer (if present) and dynamic resistance of the diode mitigates this, but there is still a larger than normal current transient. Again, the slow blow protective device allows this in the short term.Hy i'm GbRlEuEeN, i used f10a(fast) fuse to replace t5a fuse(slow) but was on audio sistem(subwoofer) and i will change back as soon il get the t5a. ( i tryed f5a first but blowed instant at power up.
What melts if the current in an electric circuit gets too high?
Anything that is in contact with the medium conducting the over-current. In an ideal situation a breaker should trip or a fuse should blow. If not wire insulation can melt, the wire itself can melt or various components can either melt or burn outright. Sq D used a motor overload heater that was used on its motor overload contactor. It was designed as a ratchet on the end of a shaft that was inserted in a barrel on the body of the overload. A melting alloy held the shaft in the barrel. The ratchet on the end of the shaft held a spring loaded contact in the closed position. The body of the overload was bolted in series with the load terminal on the output side of the contactor. When the motor load current heated the overload protection device above its trip point, the alloy melted allowing the shaft to turn in the barrel portion of the overload heater. Being spring loaded the ratchet turned from the spring pressure and opened the normally closed contact thereby opening the magnetics coil circuit, dropping the contactor open and shutting the motor off.
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Blow down is done in the boiler in case level is high in the boiler
Why would 1999 Plymouth breeze blow fuse when starting?
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Can Power going off and on damage air conditioner?
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Why wont my outside central ac system fan not work?
In the central ac system it could be a few diffrent things that are not working, that is causing the fan not to blow. Their could be no power to the outside unit, a bad contactor, a bad capacitor, or your high pressure switch could be shut down.
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to blow up vehicles.
Do power plants blow up after 50 years?
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What is the purpose of a welsh plug?
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What the reason for Compressor and condenser fan not starting?
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What question can you ask yourself to help you figure out if you have accomplished you purpose for reading?
blow your mom
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What could pose a problem in the use of wind as an energy source?
The wind does not always blow, and it may not blow where you need the power.
