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The time of opening the breaker depends on the following:
1-The signaling time
2-The relay operating time
3-Trip time
4-The time of breaker to open ,it is about 100 ms
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∙ 13y ago
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Is a circuit breaker a resistor?
No, a circuit breaker is a safety device that is used in a circuit to limit the amount of current in an overload or short circuit condition. The number on a breaker is the top end current that the breaker will handle before opening the circuit.
Can you install a tandem breaker?
Tandem breakers, often called split breakers or double breakers, provide two separate circuits in the space of a regular sized breaker opening. Every circuit breaker panel has a limited number of circuit openings available. The problem is that when the openings are all used up and you still need to add another circuit, what do you do? You could change the electrical panel or double up circuits on a breaker, but this could place too much load on a particular circuit. So what then? The answer that many have found is a tandem breaker. This type breaker is the same size as any other breaker, but it has its difference. This breaker sports two smaller breakers built into one regular sized breaker. Each has its own breaker switch and the breaker snaps in just like a regular breaker. With this simple innovation, you can add a circuit and protect the circuit on its own dedicated line.
What is a Circuit breaker and explain type circuit breakers?
A circuit breaker is a switching device which can make,brake and carrying (or trip the circuit) that specified over currents for a small interval of time . There is a different types of Circuit Breaker's are there 1.According to their arc quenching media these are divided into 4 types a) Oil circuit breaker b) Air blast circuit breaker c) SF6 circuit breaker d) vacuum circuit breaker 2. According to their services the circuit breaker can be divided as a) Outdoor Circuit Breaker b) Indoor Breaker 3. According to the operating mechanism of circuit breaker they can be divided as a) Spring operated Circuit Breaker b) Pneumatic Circuit Breaker c) Hydrolic Circuit Breaker 4. According to the voltage level of installation these are divided into 3 types a) High Voltage Circuit Breaker b) Medium Voltage Circuit Breaker c) Low Voltage Circuit Breaker.
What would cause a 15 amp circuit breaker to throw after 5 hours?
Operating a breaker on a continuous current, close to the breaker's tripping point can cause this condition. Because the breaker is a thermal device the heat builds up over a time period. Check the breakers on either side of the faulting breaker. If these breakers are also warm from use they take away the heat sink effect and do not let the faulting breaker cool down. Check the current of the load to see how close you are operating to the breakers trip point. Over time the trip setting of the breaker can become lower to a point where it will not reset. Changing the breaker out should rectify this non resetting condition.
Why will too many electrical devices operating at one time after blow a fuse or trip a circuit breaker?
The load exceeds the limit of the breaker or fuse. For example a 20 amp breaker on a 120 volt circuit will handle 2400 watts. Exceed that wattage and the breaker will trip or the fuse will blow.
Definition for time current curve?
It is the relationship between current and time on a circuit breakers opening. When the circuit breaker needs to open in given "windows" of amps and time. They should intersect on the curve to indicate proper circuit breaker functioning. The timing and current value should coincide with each other, per manufacturers specifications. Each breaker differs.
Is a circuit breaker a resistor?
No, a circuit breaker is a safety device that is used in a circuit to limit the amount of current in an overload or short circuit condition. The number on a breaker is the top end current that the breaker will handle before opening the circuit.
What is total break time of circuit breaker?
refer to http://yourelectrichome.blogspot.com/2011/03/circuit-breaker-time-total-break-time.html
What is oil circuit breaker?
An oil circuit breaker is a breaker that is immersed in a tank of insulating oil. The tank has two electrical bushings through the tank to allow the supply and load to be connected to the breaker. These breakers can be opened under a heavy amperage load. The insulating oil is used to extinguish the arc that is produced when opening a switch under load.
How is a fuse different from a circuit breaker?
A fuse is used one time and replaced. A breaker can be re-set.
How do you calculate time from open time to close time in Excel?
You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3You subtract the opening time from the closing time, which will give you the amount of time it was open. Say your opening time was in B3 and the closing time was in C3, then your formula would be:=C3-B3
Why do you use isolator on both side of circuit breaker?
Opening a circuit breaker merely interrupts the current flowing through that circuit. It doesn't remove the voltage from the circuit breaker. Isolators (called 'disconnects' in North America) place a visible gap between the circuit breaker and energised conductors, allowing work to be performed on the circuit breaker safely. The full procedure involves: 1. Tripping the circuit breaker (CB). 2. Opening both isolators. 3. Applying temporary earth (ground) connections on either side of the CB. 4. Placing barriers and warning signs around the CB. 5. Issuing a permit to work card to the maintenance supervisor.
What does dwelled?
The number of degrees the breaker cam rotates from the time the breaker points close until they open again.
How the circuit breaker differ in its function from combination switch fuse unit?
The function is the same in that they both are designed to remove an over current situation by opening the circuit. A tripped breaker can just be reset. A blown fuse needs to be replaced.
Is there any cure for heart breaker?
Time...and lots of it.
What breaker for 17.3 amps?
I would suggest a 20 amp breaker. * Added - I would suggest a 25 amp breaker. A slight surge, depending upon what equipment is the source of the 17.3 amp load, should not result in circuit breaker opening. <<>> In North America, the electrical code only allows circuit loading up to 80% on a continuous load. A 20 amp breaker can be legally loaded to 16 amps. A 25 amp breaker can be legally loaded to 20 amps.
Vacuum bottle in vacuum circuit breaker?
Is a breaker whose contacts are in vacum cylinder. this done so the contacts will not be burnt and destroyed by the electrical arc draw while opening under load.Used in high voltage and high amp conditions.
