New self-lubricating plastic plain bearings used in the isolation switch

New self-lubricating plastic plain bearings used in the isolation switch

First, the isolating switch is mainly used to power high-voltage power distribution equipment parts and the need to reliably isolate live parts to ensure the safety of maintenance work. Isolating switch is in the sub-location, contact between the insulation to meet the requirements and obvious disconnect from the mark; the combined position, capable of carrying currents under normal circuit and abnormal conditions within the specified time (eg short circuit), the The current switching equipment
Second, the working principle of isolating switch
All Changlu contact isolation switch in the air, with a clear break point, isolating switch is not interrupter device, it can not be used to cut off the load current or short-circuit current, or under high pressure, a strong arc off point and difficult to extinguish, and may even result in arc (relative to short-circuit or white), burning equipment, endangering personal safety, this is the so-called "negative Hela isolation switch" serious accident. Isolating switch can also be used for certain circuit switching operation to change the system operates. For example: In the double-bus circuit, isolating switch can be used to run the circuit to switch from one bus to another bus. It also can be used to operate small current circuit; aluminum spot welding
Third, the isolation switch the use of sliding bearing rotating parts
Disconnect switch blade contact is isolated division and movement control can rely on manual and electric completed, but it is in the rotating parts that are required in any case be able to runslide bearing smoothly, which requires all rotating parts of the bearings in the longer even after a pause of time to ensure that work; order to ensure that the process of annual maintenance isolation switch can be normal operation which requires all rotating parts of the sliding bearing to resist the high and low temperature all year round and when the end-capping cross even after failure the erosion resistance of various external factors, such as salt spray, acid rain, oxidation caused by corrosion, and so the failure of natural factors.
Fourth, self-lubricating plastic bearings wear resistance
CSB-EPB series of self-lubricating plastic bearing possesses excellent self-lubricating and wear resistance is mainly CSB companies to take advantage of the self-lubricating material modification technology, high-performance engineering plastics used in high-strength fiber material of the load increases and special grease reduces friction coefficient, thus increasing wear resistance of materials to extend the integrated plastic bearing life. High-performance engineering plastics as the base material used primarily as wear-resistant vector; reinforcing fibers to improve the bearing load and impact resistance; special grease reduces bearing friction coefficient from the self-lubrication;
Fifth, self-lubricating plastic plain bearings for the advantage of isolating switch
Self-lubricating plastic bearings CSB-EPB1 suitable for rated voltage 40.5KV ~ 252KV indoor and outdoor high-voltage isolation switch the rotating parts of machinery to ensure whether in manual or electric operation can be completed successfully under the "floodgates" and "closing" action .
The use of plastic bearing pressure isolation switch has the following advantages:
1, CSB-EPB1 the plastic bearings can work in a vacuum environment, so use this plastic bearing the high-voltage isolation switch is not installed height restrictions, at an altitude of 3,000 meters above the mountains to work;
2, plastic bearings CSB-EPB1 the long-term use temperature of -50 ℃ ~ +110 ℃; so the use of this high-voltage isolation switch plastic bearings are used in the cold either north or south can be hot work; can be more than 10mm thick of ice work.
3, plastic bearings CSB-EPB1 very little moisture absorption of only 0.05%; use the plastic bearing the high-voltage isolation switch, whether in rain or high humidity can be high and dry summer, completion of the normal rotation.