低压断路器的接线方式 倒进线的弊端（The connection mode of low voltage circuit breaker, the disadvantage of inverted line）.docVIP

低压断路器的接线方式 倒进线的弊端（The connection mode of low voltage circuit breaker, the disadvantage of inverted line） Connection mode of low voltage circuit breaker I. overview The vertical or horizontal installation of circuit breaker is installed, the circuit breaker panel nameplate word or identification parameters, the terminal circuit breaker above as power lines into the terminal, also known as the power supply terminal, circuit breaker will be below the end as the connection end of the load, also known as the load, this kind of connection, said as a forward line; and the power circuit breaker in the end as a forward line load, load connection terminal is used as a power supply terminal, said under the line. Two, typical mother form The circuit breaker connection is usually in the upward line mode, but often because of the installation situation, the circuit breaker requires the next entry mode wiring. For example: below power distribution cabinet, power line circuit breaker to load more convenient; there are in the cupboard, filled with two or two rows of circuit breakers, power line introduced from the middle part of a circuit breaker, two or two rows, respectively, the connection mode of the inlet line and the line. There is also a special occasion, no matter what measures are taken to avoid the way down the line, in the construction of electrical more classical form of mother, as shown in figure 1. The three circuit breakers of QF1, 1F2 and QF3 in Figure 1 are connected to each other. Only 2 circuit breakers can be switched on at the same time, and one must be in a state of disconnection. In actual operation, the commonly used three key lock two to ensure the reliability of the chain, such as HSW1 series circuit breaker have this function, three circuit breakers have the same lock, can release part of reliable locking mechanism, three circuit breakers equipped with only two the same keys, when the key insert and unlock the circuit breaker mechanism can make the circuit