Operation And Maintenance Of Low Voltage Cable
What is the role of low-voltage cable
1, the so-called low-voltage wire is 0.6 / 1KV the following cable (including) for the low-voltage cable, the difference is the tolerance voltage is different, insulation and sheath structure is different; 0.3 / 0.5kv 0.45 / 0.75kv control cable; 0.6 / 1KV Low voltage power cable.
Second, the low-voltage cable above the 3.6 / 6KV, 8.7 / 10KV, 8.7 / 15KV, 21 / 35KV high-voltage power cables, as well as ultra-high voltage 100KV.
Operation and maintenance of low voltage cable
(1) corrosion monitoring. Measure the surrounding soil of the adjacent line with a special instrument. Low Voltage XLPE Insulated Electric Cable If it belongs to the anode area, the corresponding measures should be taken to prevent the electrolytic corrosion of the low voltage cable metal sleeve. Its surrounding wetting soil or soil filled with garbage, metal sets often chemical corrosion and microbial corrosion, Low Voltage XLPE Insulated Electric Cable according to the measured anode area voltage, select the appropriate cathodic protection measures or drainage device.
(2) Insulation supervision. For each cable wire according to its importance, the preparation of preventive test plan, the timely detection of the weak links, Low Voltage XLPE Insulated Electric Cable the elimination of possible defects in the accident. Generally in the preventive test after the need for additional protection of the outer layer of DC voltage test, and the discovery and elimination of defects in the outer sheath.
(3) load monitoring. Generally, the maximum current value is specified according to the cross-sectional area of the conductor, the type of insulation, etc., Low Voltage XLPE Insulated Electric Cable and the load current or the temperature of the fiber is measured by various instruments as the main load monitoring measures to prevent the insulation from exceeding the maximum temperature and shorten the cable life.
(4) temperature monitoring. The temperature should be measured during summer or maximum load. When measuring the temperature of buried low-voltage cables, Low Voltage XLPE Insulated Electric Cable the soil temperature without other heat sources should be measured.