How much is the smart air open _ how to choose a smart circuit breaker
Crane Block,Pulley Hook Block,Caterpillar Crane Hook,Hook Block Parts Zhangqiu Heavy Forging Co.,Ltd , https://www.zhangqiuforging.com
February 10 15:05:32, 2020
Nowadays, smart circuit breakers have been widely used in some different lines. Intelligent circuit breakers are generally divided into two categories: second, third and fourth. However, the quality of such intelligent leakage circuit breakers on the market is not high. Qi, so we can only make proper use of smart leakage circuit breakers to make the intelligent leakage circuit breakers work properly.
Let me first explain the working principle of the intelligent circuit breaker. The intelligent circuit breaker is made up of a transformer, a trip unit and some circuit breakers. It is mainly used to protect the circuit. When there is a fault in the protection circuit, the leakage current When the quantity reaches the set level, the transformer will output a signal to let the intelligent leakage circuit breaker cut off the circuit to protect the human body from human body damage caused by circuit leakage and other factors.
Intelligent circuit breakers should be considered as follows when making the selection:
1. Wire line: The current of the circuit breaker should be less than the current carrying capacity of the wire. Otherwise, it is very likely that the overload will not trip and it will not be protected.
2. Total switch current: The current of the branch switch should be less than the total switch current to avoid the phenomenon of step-by-step tripping.
3. Number of sockets: If the number of the circuit sockets is too large, consider increasing the circuit breaker current and the line of the trunk wires to avoid overload.
4. Circuit breaker series: Under normal circumstances, from the economic point of view and safety point of view, the circuit breaker of the ordinary five-hole socket circuit can use the single-pole circuit breaker, and the three-hole socket circuit used by the high-power electric appliance needs to use the two-pole open circuit. Device.
5. Protection function of circuit breaker: All socket circuits must use circuit breakers with leakage. It is not recommended to use leakage circuit breakers for lamp circuit and main switch to avoid malfunction.
Common leakage circuit breakers are selected as 1PC16 leakage circuit breaker, 1PC20 leakage circuit breaker and 2PC32 leakage circuit breaker. Cxx is the rated current of the circuit breaker is xx amps.
Generally speaking, the circuit breaker current of the household distribution box branch switch should not exceed 32A, because the wire in the corridor is generally 6 square meters, and the single-user current is too large, which is likely to cause fire in the corridor.
6, the general kitchen socket, must install the leakage circuit breaker, because the kitchen generally uses rice cooker, range hood, intelligent electric fume check valve, they will cause harm to the human body if it leaks.