Check and repair the disconnecting switch of rice packing machine in yingkou

1. Check, maintain and repair the disconnecting switch of yingkou rice food packaging machinery; No load is allowed to connect with the circuit

Check and repair the disconnecting switch of rice packaging machinery in yingkou; Close the disconnecting switch and circuit breaker before power transmission of vacuum packaging machine; In case of power failure, stop the circuit breaker first and break the disconnecting switch later. When disconnecting switch is cut off, the middle phase is broken first and the two side phases are broken later. When sending electricity, first combine the two side phases, then the middle phase.

Check and repair the disconnecting switch of rice packaging machinery in yingkou; For packaging machines, qualified insulating gloves should be worn when operating the disconnecting switch while live. In the process of operation, such as arc light, closed is not allowed to open, open is not allowed to close.

High voltage isolator with ground knife switch, main knife switch handle and ground knife switch handle should have reliable mechanical interlock.

Check and repair the disconnecting switch of rice packaging machinery in yingkou; Full automatic vacuum packing machine disconnecting switch equivalent circuit breaker must have at least a mechanical or electrical interlocking device. The isolation switch allows the connection of voltage transformer, arrester, busbar charging current, switch bypass current, no-load transformer neutral ground wire.

Check and repair the disconnecting switch of rice packaging machinery in yingkou; When operating the disconnecting switch, it is not allowed to exceed the transformer excitation current and no-load current that can be broken, the capacitance current value of the overhead line and the no-load transformer current value that can be matched.

2. Check, maintain and repair the disconnecting switch of yingkou rice food packaging machinery; Attention should be paid to observation and circuit inspection during operation

Check and repair the disconnecting switch of rice packaging machinery in yingkou; Full automatic packaging machine operation should pay attention to observe the connection points, especially the gate mouth whether good contact, there is no corrosion overheating phenomenon. Monitor the temperature of the wax sheet or discoloration paint without melting and discoloration. During the tour inspection, it is necessary to pay attention to whether the porcelain insulator and porcelain bushing are cracked or broken, as well as flashover discharge trace and serious corona phenomenon.

Do not use too much force during operation, in case the brake nozzle is out of position and damages the parts. The locating pin should enter the positioning hole of the handle accurately. In particular, GN8 series isolation switches on the top of the high voltage switchgear set are particularly important when entering the cabinet for maintenance, in case the knife switch pull rod mistakenly moves to introduce high pressure into the cabinet.

Check and repair the disconnecting switch of rice packaging machinery in yingkou; Dust and oil should be cleaned regularly, lubricating oil should be added to the rotating part, and vaseline should be added to the gate nozzle. 3. Maintenance and repair of disconnecting switch

(1) check, maintain and repair the disconnecting switch of yingkou rice food packaging machinery; Repair cycle of vacuum packing machine disconnector

The disconnecting switch is connected to the circuit without load. General operation is infrequent, appropriate undertakes every half an year small repair,5 years undertake overhaul, below accident and special case, can arrange temporarily repair.

(2) check, maintain and repair the disconnecting switch of yingkou rice food packaging machinery; Vacuum packaging machine isolation switch minor repair

(1) clean dust and oil.

(2) check the dynamic and static contact should be in good contact. Repair the burn mark and apply vaseline.

(3) check the conductive joint, especially the connection of different materials copper aluminum have no electric corrosion, and repair the light corrosion mark, tighten the nut.

(4) check the lock mother, pin, cotter pin loose fall off.

Repair or replace worn parts.

6 check the operating mechanism of the components should be flexible and reliable action.

Lubricating oil is added to the rotating shafts and bearings.

We should check that grounding lines should be firmly in contact.

9) check the reliability of mechanical and electrical interlocks.

(3) check, maintain and repair the isolation switch of yingkou rice food packaging machinery; Vacuum packaging machine isolation switch overhaul

(1) complete minor repair project.

Replace rusty elastic insufficient blade, magnetic lock spring and positioning pin spring.

Replace seriously worn blade and static contact.

(4) replace seriously worn or damaged parts and components, and measure the insulation resistance of insulators.

Dismantle and clean the rolling bearing of the driving shaft of the outdoor isolation switch, and add new vaseline.

Repair light and adjust the static and static contact, make it embedded in place without askew, good contact.

(7) an insulation resistance meter is used to measure the ground insulation resistance of the unit insulator. For rated voltage <24kV, the insulation resistance shall not be less than 1000M0(20); Rated voltage ≥24N, not less than 2500MQ(20℃).