In recent years, Zhongshan to promote the integration of urban and rural construction, cable rate is very high, with the rising load of electricity led to 10 kV cable often fails. Emergency repair, difficult, the equipment has led to the failure of the location of the power supply board has been short board, has been plagued by the emergency branch of the power supply group. Taiyong power supply branch emergency class squad leader Xu told reporters: "In the past, emergency branch team holding a bridge to measure the fault.This equipment is very limited, often due to various reasons is difficult to point out the usual Is loaded by other lines to bring, we then opened to find, and sometimes to check for a few days, seriously affecting the repair work of the cable. "" Tai Chung Yu Tong particularly large, are not power failure, the cable fault is The most troublesome thing. "Power branch emergency repair group, only to maintain the line below 10 kV, voltage level is not too high for the power grid, equipped with equipment and technical strength is less than the power transmission management, whenever encountered Cable repair problems, need to be around to consult or borrow tools, wasting a lot of time during.
Sub-Bureau held a meeting many times based on this problem, joint equipment management department, research solutions. Finally, set out by the transmission management temporary temporary help and solution. According to Zhang Zhifang, a squad leader of the power transmission management team, the scene went to the 10 kV fault site. Generally, the "three pulse method" is used to measure the approximate position of the cable fault. If there is no fault waveform, the fault will be judged as high impedance Switch to high-pressure DC immediately burn through. After the final rough test can be accurate positioning. These are the methods commonly used to manage the main network cables. The voltage levels are high and require precision instruments and qualified personnel to operate. However, it is very difficult to manage the emergency repair classes for distribution networks. Now 10kv high voltage cable fault site inspection is not a problem to find the fastest failure point less than half an hour.
Depending on various design, the oil-gas filter is composed of different layers. The first layer is typically coalescence layer, which is made of borosilicate glass fibers with a certain thickness and porosity, multilevel submicron glass fiber ensures at higher temperature to capture the tiny droplets of different lubricants efficiently. The second layer is separation layer, the large coalesced oil droplets go to bottom groove by separating layer.
If pre-separation of the oil filtration barrel is poor, the pre-separation filter layer is added to the outermost layer to prevent the coalescence layer overload and prolong life.
According to the requirements of the chemical industry and commerce association, the metal parts with oil and gas separation filter of the compressor has conductive connection, in order to reliably conducting static load. The appropriate sealing gaskets are selected ensuring a conductive connection to the compressor body.
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