Fuses of vacuum tube packing machine for seafood food

Fuses of vacuum tube packing machine for seafood; The fuse of vacuum packing machine plays a protective role in the circuit, which is connected in series in the circuit. When the circuit has a short circuit fault, the melt can automatically and quickly fuse to cut off the power circuit, so as to protect the circuit and electrical equipment. Below we will understand the seafood food vacuum tube packaging machine fuse structure.

1. Fuses of vacuum tube packaging machine for seafood; Structural characteristics of outdoor fuses

Fuses of vacuum tube packing machine for seafood; Full automatic vacuum packing machine drop fuses and pull load drop fuses are outdoor high voltage protection appliances. Drop type fuses and pull load drop type fuses are applicable to the power system with frequency of 50Hz and rated voltage of 35kV and below. They are installed on the high voltage side of distribution transformer or the main distribution branch road and are used for short circuit and overload protection of transformer and line as well as current distribution or combination of load. They are outdoor high voltage protection appliances.

Fuses of vacuum tube packing machine for seafood; The drop type fuse of packing machine is composed of three parts: insulation support, moving and moving contact and fuse. The static contact is installed at both ends of the insulation support, and the moving contact is installed at both ends of the fuse, which is composed of the inner arc extinction tube and the outer phenolic paper tube or epoxy glass fiber cloth tube. Drop type fuses with tension load are equipped with elastic auxiliary contacts and arc extinguisher to share and combine load current. When the drop fuse is in normal operation, the fuse tube forms a closed position with the help of melt tensioning. When the system fails, the fault current causes the melt to fuse quickly, and when the arc is formed, the arc extinction tube is heated by the arc, producing a large amount of gas, causing a high pressure in the pipe, and blowing along the pipe strongly, the arc is rapidly elongated and extinguished. After the melt is fused, the lower static contact loses its tension and turns down, so that the locking mechanism releases the fuse, and the fuse falls down, forming an obvious open and broken position. When it is necessary to pull the load, pull the moving contact with an insulating rod. At this time, the active and static contact are still in contact. Continue to pull the contact with an insulating rod, and the auxiliary contact is also separated to generate an arc between the auxiliary contacts. The arc is elongated in the gap of the cover, and at the same time the cover generates gas, which will extinguish the arc when the current exceeds zero.

2. Fuses of vacuum tube packaging machine for seafood; Fuses type knife switch structure characteristics

Fuses of vacuum tube packing machine for seafood; Air controlled vacuum packing machine, box packing machine fuse type knife switch is a combination of stuffing fuse and knife switch, with RTO stuffing fuse and knife switch basic performance, in the case of normal power supply circuit, on and off power supply by knife switch. When the line or electrical equipment overload or short circuit, fuse type knife switch melt fuse, timely cut off the fault current. The fuse-type knife switch of maintenance type before operation has a door for maintenance and replacement of the fuse, which is mainly for installation on the BDL distribution screen. The pre-operation and post-maintenance switch is mainly for installation on the BSL distribution screen. The fuse-type knife switch before side operation can be made into a closed power distribution box.

Fuses of vacuum tube packing machine for seafood; Fuses with rated current of 600A and below shall be equipped with a panel and an arc extinguishing chamber. Arc extinguishing chamber is made of phenolic cloth board and steel plate.

Fuses of vacuum tube packing machine for seafood; The melt of fuse type knife switch of vacuum packaging machine is fixed on the insulated beam with spring and lock plate, so that the fuse diagram can be guaranteed in normal operation. When the melt is broken due to line fault, just press the lock plate to replace the melt conveniently.