busbar cutter widely uses in high and low voltage switch cabinets, substations, bus ducts, and other manufacturing industries.
In order to improve the work efficiency of busbar cutter and ensure industry safety, this article will introduce you the failure Analysis of busbar cutter and conventional treatment methods:
Transmission chain of busbar cutter
1. Since the transmission chain of the busbar cutter mostly uses rolling friction pairs, most of the faults in this area are caused by the decline in the quality of the movement.
For example, the backlash increases, the positioning accuracy does not meet the requirements, the phenomenon of mechanical crawling, and bearing noise It becomes larger (especially after a mechanical hard collision), etc.
This part of the maintenance is often closely related to the adjustment of the preload of the motion pair, the loose ring and the compensation link.
Automatic tensioning device for knife handle
2. This part of the fault is mostly related to the automatic tensioning device of the tool holder, the automatic gear shifting device and the reduction of the accuracy of the spindle movement.
Because the copper row processing machine has adopted the electrical automatic speed regulation, the mechanical gearbox device has been cancelled, sometimes although there is a variable speed The box is also very simple, and the structure is simplified to greatly reduce the failure.
Limit switch of busbar cutter
3. The busbar cutter equips with many limit motion limit switches.
After a period of use, the movement characteristics of the moving parts have changed, and the mechanical reliability of the press-fit limit switch and the quality and characteristics of the limit switch itself will affect the whole The movement of the machine.
This requires a good inspection, replacement or adjustment.
Oil temperature gauge
There is an oil temperature gauge in the copper row processing machine.
which indicates the top oil temperature of the transformer.
When the transformer is running at an external temperature of 40 ℃, its temperature rise shall not exceed 55 ℃.
During operation, the top oil temperature shall prevail.
The temperature rise is the reference data .
The temperature rise standards of transformers in our country are based on the ambient temperature of 40℃.
so the top oil temperature of the transformer should generally not exceed 40℃+55℃=95℃.
If the top oil temperature exceeds 95℃, the temperature of the internal coil will exceed the heat resistance
strength of the coil insulation.
in order to prevent the insulation from aging too quickly.
so stipulate that the monitoring of the top oil temperature of the transformer should control below 85 ℃.
The cooling system should be maintained and flushed in time or a backup cooler should be used.
otherwise the load of the transformer must be adjusted.
The temperature indicator has an error or the indication fails. , The thermometer should be replaced.