A breaker is a device that opens an electrical circuit to protect equipment and prevent fires. Breakers are also known as circuit breakers.
Here are some things to know about circuit breakers:
Function
Circuit breakers automatically shut off the flow of electricity when a fault occurs, such as a short circuit, overload, or ground fault.
Components
Circuit breakers have five basic components:
Tripping mechanism: Also known as the trip unit, this triggers the operating mechanism when a fault occurs.
Operating mechanism: Opens or shuts the breaker to protect the circuit.
Molded frame: The outer case that protects and supports the other components.
Arc chutes: Located near the contacts, these chutes prevent damage and heat from interfering with the breaker's functionality.
Uses
Circuit breakers are used in both residential and industrial applications.
Safety
Circuit breakers are generally safer to handle than fuses and don't need to be replaced after every overload. However, there have been cases where they jammed and failed to cut off the circuit.
Magnetic contactors are electrical switches that control the flow of power to high-current devices. They are used in applications that require a higher current carrying capacity, such as with electric motors.
Here are some features of magnetic contactors:
How they work
When power is supplied to the coil, it generates a magnetic field that pulls the iron core and closes the contacts, allowing power to flow to the load.
Safety
Magnetic contactors separate the control circuit from the power circuit, which makes them safer for operators. They also provide low-voltage protection (LVP) in case of a power outage.
Versatility
Magnetic contactors are available in various configurations, such as AC or DC contactors, single-phase or multi-phase systems, and single-pole or two-pole configurations.
Durability
Magnetic contactors are designed to withstand the mechanical stresses associated with frequent switching of high currents.
Magnetic contactors are used in many industries and larger-scale control circuit applications.
Maintenance Technician
This engine has experienced a catastrophic failure, likely due to a connecting rod breaking and punching a hole through the engine block.
Possible causes for this kind of failure:
Over-revving:
Exceeding the engine's RPM limit can cause the connecting rod to fail.
Hydrolock:
Water or other liquid entering the cylinder can cause the connecting rod to bend or break.
Oil starvation:
Lack of sufficient lubrication can cause the connecting rod bearings to seize and fail.
Manufacturing defect:
In some cases, a faulty connecting rod or other component can lead to failure.
1 year ago | [YT] | 0
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Maintenance Technician
A breaker is a device that opens an electrical circuit to protect equipment and prevent fires. Breakers are also known as circuit breakers.
Here are some things to know about circuit breakers:
Function
Circuit breakers automatically shut off the flow of electricity when a fault occurs, such as a short circuit, overload, or ground fault.
Components
Circuit breakers have five basic components:
Tripping mechanism: Also known as the trip unit, this triggers the operating mechanism when a fault occurs.
Operating mechanism: Opens or shuts the breaker to protect the circuit.
Molded frame: The outer case that protects and supports the other components.
Arc chutes: Located near the contacts, these chutes prevent damage and heat from interfering with the breaker's functionality.
Uses
Circuit breakers are used in both residential and industrial applications.
Safety
Circuit breakers are generally safer to handle than fuses and don't need to be replaced after every overload. However, there have been cases where they jammed and failed to cut off the circuit.
1 year ago | [YT] | 0
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Maintenance Technician
Magnetic contactors are electrical switches that control the flow of power to high-current devices. They are used in applications that require a higher current carrying capacity, such as with electric motors.
Here are some features of magnetic contactors:
How they work
When power is supplied to the coil, it generates a magnetic field that pulls the iron core and closes the contacts, allowing power to flow to the load.
Safety
Magnetic contactors separate the control circuit from the power circuit, which makes them safer for operators. They also provide low-voltage protection (LVP) in case of a power outage.
Versatility
Magnetic contactors are available in various configurations, such as AC or DC contactors, single-phase or multi-phase systems, and single-pole or two-pole configurations.
Durability
Magnetic contactors are designed to withstand the mechanical stresses associated with frequent switching of high currents.
Magnetic contactors are used in many industries and larger-scale control circuit applications.
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Maintenance Technician
Question:2
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Maintenance Technician
Which one is the correct answer?
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