Circuit-Breake Mitsubishi Model TCS-03SV3 Can Be Used To Distribute Electri

Circuit breaker refers to the switching device that can close, carry anddisconnect the current under normal circuit conditions, and can close, carryand disconnect the current under abnormal circuit conditions within a specifiedtime. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high-voltage and low-voltage boundaries is relatively vague. Generally, those above3KV are called high-voltage appliances.The circuit breaker can be used to distribute electric energy, start theasynchronous motor infrequently, and protect the power motor. Whenthey have serious overload, short circuit, undervoltage and other faults, itcan automatically cut off the circuit. Its function is equivalent to thecombination of fuse switch and over and under heating relay. Moreover, it isgenerally not necessary to change the parts after breaking the fault current.At present, it has been widely used.Power distribution is an extremely important link in the generation,transmission and use of electricity. The distribution system includestransformers and various high and low voltage electrical equipment, and the lowvoltage circuit breaker is an electrical appliance with large amount and widerange of use.working principleThe circuit breaker is generally composed of system, arc extinguishingsystem, operating mechanism, release, shell, etc.In case of short circuit, the magnetic field generated by large current(generally 10 to 12 times) overcomes the reaction spring, the release pulls theoperating mechanism to act, and the switch trips instantaneously. In case ofoverload, the current increases, the calorific value intensifies, and thebimetallic sheet deforms to a certain extent to promote the action of themechanism (the greater the current, the shorter the action time).For the electronic type, the transformer is used to collect the current of eachse and compare it with the set value. When the current is abnormal, themicroprocessor sends a he electronic release drive theoperating mechanism.The function of circuit breaker is to cut off and connect the load circuit andcut off the fault circuit to prevent the expansion of accident and ensure safeoperation. The high-voltage circuit breaker needs to break the arc with 1500Vand current of 1500-2000a. These arcs can be elongated to 2M and still continueto burn. Therefore, arc extinguishing is a problem that must be solved for highvoltage circuit breaker.The principle of arc blowing and arc extinguishing is mainly to cool the arcand reduce heat dissociation. On the other hand, arc blowing lengthens the arcto strengthen the recombination and diffusion of charged particles, and blowaway the charged particles in the arc gap to quickly restore the insulationstrength of the medium.Low voltage circuit breaker, also known as automatic air switch, can be used toturn on and off load circuit, and can also be used to control infrequentlystarted motor. Its function is equivalent to the sum of some or all functionsof knife switch, overcurrent relay, voltage loss relay, thermal relay andleakage protector. It is an important protective appliance in low-voltagedistribution network.Low voltage circuit breaker has many protection functions (overload, shortcircuit, undervoltage protection, etc.), adjustable action value, high breakingcapacity, convenient operation, safety and other advantages, so it is widelyused. Structure and working principle low voltage circuit breaker is composedof operating mechanism, protection device (various releases), arcextinguishing system, etc.The main of low-voltage circuit breaker is closed manually orelectrically. After the main is closed, the free tripping mechanismlocks the main in the closing position. The coil of the overcurrentrelease and the thermal ermal release are connected in serieswith the main circuit, and the coil of the undervoltage release is connected inparallel with the power supply. In case of short circuit or serious overload ofthe circuit, the armature of the overcurrent release is pulled in to make thefree tripping mechanism act, and the main disconnects the main circuit.When the circuit is overloaded, the thermal ermal releasegenerates heat, which bends the bimetallic sheet and pushes the free releasemechanism to act. When the circuit is under voltage, the armature of the undervoltage release is released. It also makes the free tripping mechanism act. Theshunt release is used for remote control. During normal operation, its coil ispowered off. When distance control is required, press the start button to poweron the coil.