0
What happens when a phase gets disconnected in a 3 phase four wire and 3 phase three wire system?
Wiki User
∙ 8y ago
Can u imagine a merrygoround with so many kids on it that three kids can hardly turn it? now imagine that same merrygoround with only two kids trying to turn it. Same thing with one line missing. it will sit there and burn until a breaker goes or the other kids burn out.
If you have a motor running it will run until it is stopped but it wont start again.
:motors;
called single phasing,, the other 2 phases ampers increase and trip the motor overloads.. or blow fuses
Wiki User
∙ 8y ago
In a 3-phase 4-wire system, if one phase gets disconnected, the load will still receive power from the other two phases since each phase is individually connected. However, the system may become unbalanced, affecting the performance of the connected equipment. In a 3-phase 3-wire system, if one phase gets disconnected, the load will lose power completely as there is no alternative path for the electricity to flow.
Add your answer:
Earn +20 pts
How will you measure a three phase electric supply?
To measure a three-phase electric supply, you would typically use a three-phase energy meter which can accurately measure the total energy consumption across all three phases. This meter will record the total power consumed by adding up the power usage across each phase. Additionally, you can use a power analyzer to measure voltage, current, power factor, and other electrical parameters in each phase.
Discuss Hilda taba's1962 curriculum development model?
Hilda Taba's curriculum development model, introduced in 1962, focuses on a systematic approach that involves three main stages: diagnosis, design, and evaluation. In the diagnosis phase, educators gather data to understand the learners' needs and current knowledge. The design phase involves creating learning experiences and activities based on the diagnosis. Lastly, the evaluation phase assesses the effectiveness of the curriculum in achieving its goals and objectives, leading to revisions and improvements as needed.
What is the principle of 3 phase induction motor?
When three phase supply is given to the three phase stator winding of the induction motor,a rotating magnetic field is developed around the stator which rotates at synchronous speed.This rotating magnetic field passes through the air gap and cuts the rotor conductors which were stationary.Due to the relative speed between the stationary rotor conductors and the rotating magnetic field,an emf is induced in the rotor conductors.As the rotor conductors are short circuited, current starts flowing through it.And as these current carrying rotor conductors are placed in the magnetic field produced by the stator, they experiences a mechanical force i.e. torque which moves the rotor in the same direction as that of the rotating magnetic field. the induction motor can't run at the synchronous speed because at synchronous speed the induction motor can not develop any torque to move the rotor from its stationary position.
What type of education does china have?
China has a nine-year compulsory education system, consisting of six years of primary school and three years of junior secondary school. After that, students can choose to attend three additional years of senior secondary school before moving on to higher education institutions such as universities and colleges. The education system places strong emphasis on academics and standardized testing.
Name three variables that affect a living system?
Environmental conditions: Factors such as temperature, humidity, light, and nutrient availability can have a significant impact on a living system's function and behavior. Genetic makeup: The genetic composition of an organism plays a critical role in determining its traits, behaviors, and responses to stimuli. Interactions with other organisms: Relationships with other organisms, such as competition, predation, or mutualism, can influence a living system's development and survival.
What happens if the source of 220 Volts originates from two legs of a 3-phase circuit?
Nothing happens. This is a normal way to obtain a single phase system from a three phase system.
In a modern industrial plant the most likely polyphase power system in use is a A. one-phase system. C. three-phase system. B. two-phase system. D. four-phase system.?
A "three-phase system" is a polyphase system having three phases. The term "polyphase system" just means a system having multiple phases. If it is used by itself, "a polyphase system" doesn't mean "a three-phase system".
How does a two-phase system differ from a three phase system?
A two-phase system is archaic and you are unlikely to find it in use anywhere these days, so it is mainly of historical interest. A two-phase, three-wire system, consists of two phase voltages, displaced from each other by 90 electrical degrees, and a phase voltage which is 1.414 x phase voltage.A three-phase system consists of three phase voltages which are displaced from each other by 120 electrical degrees. In the case of a three-phase, three-wire, system, the line voltages are numerically equal to the phase voltages; in the case of a three-phase, four-wire, system, the line voltages are 1.732 x phase voltage.
What cannot be considered a single phase?
Any load that needs three legs from a three phase system can not be considered single phase. Single phase from a three phase system only needs a connection to two legs.
What is a balanced three phase system?
A balanced three phase system is where the currents into the loads placed on all three phases of the service are reasonably close to each other in amperage.Another opinionA 'balanced' three-phase system describes a three-phase load in which each phase current is identical in both magnitude and phase. If the phase currents are only 'reasonably close', then the load is not balanced.
What is kando system?
it convert the single phase in to three phase.
Is three phase induction motor continue running when any of the two phase is disconnected?
This question doesn't really make any sense - any of the two phase? A three phase induction motor requires 3 phases to start - if a single phase is lost while the motor is already running then yes the motor will continue to run. A three phase motor will not start if it is missing a phase.
What is the purpose of a phase conductor?
There is no such thing as a 'phase conductor'; the correct term is 'line conductor'. In a single-phase system, the line conductor is the energised conductor; in a three-phase system, there are three (energised) line conductors.
What are the uses of three phase transformer over single phase and their losses?
For a given load, a three-phase system requires around 75% of the volume of copper required by a corresponding single-phase system and, so, is more economical. A three-phase supply also delivers power more or less continuously, whereas a single-phase supply delivers power in pulses. Finally, three-phase motors are self-starting and physically smaller than single-phase machines of the same power rating.
In a three phase power system the phases of each voltages are normally separated by how many time degrees?
In a three phase power system, each phase is separated from the others by 120 degrees.
What is total voltage in 3phase supply when one of the phase becomes zero?
There is no 'total voltage' in a three-phase system. There are three line voltages and three phase voltages.
How many volt each phase in three phase?
600 volts between any two wires. The phase has nothing to do with voltages, only current relationship.
