Waterproof greasy-dirt-resisting 10 kV middle-voltage transducer cable and method

Abstract

The invention relates to a waterproof greasy-dirt-resisting 10 kV middle-voltage transducer cable and a method. The waterproof greasy-dirt-resisting 10 kV middle-voltage transducer cable is characterized by consisting of a conductor 1, a conductor shield 2, a cross linked polyethylene insulating layer 3, an insulating shielding layer 4, a split-phase shielding layer 5, a filling waterproof rope 6, a lapping waterproof belt 7, an insulation sleeve 8, a combined shielding layer 9, an aluminum plastic adhesion comprehensive protection layer 10 and a butyronitrile compound outer casing layer 11. The manufacturing process comprises the following steps of: (1) pulling by a single line and annealing; (2) twisting and pressing; (3) carrying out co-extrusion insulation on the conductor shielding layer, the insulating layer and the insulating shielding layer; (4) mounting the split-phase shielding layer; (5) carrying out a partial discharge test; (6) cabling; (7) mounting the insulation sleeve; (8) mounting the combined shielding layer; (9) mounting the aluminum plastic adhesion comprehensive protection layer; and (10) mounting the butyronitrile compound outer casing layer. According to the waterproof greasy-dirt-resisting 10 kV middle-voltage transducer cable provided by the invention, the insulation core wire gives up the 3+3 design normally used in a low-voltage transducer and uses a concentric conductor structure; the shielding layer uses two types including split-phase shielding and combined shielding; and a double-layer combined protection structure consists of a waterproof layer and a greasy dirt layer.

Description

technical field [0001] The invention relates to a waterproof and oil-resistant frequency converter cable, more precisely, to a waterproof and oil-resistant 10kV medium-voltage frequency converter cable. It belongs to the field of cables. Background technique [0002] With the development of electric power, electronic technology and microelectronic technology, AC frequency conversion speed regulation technology has been developed rapidly and is becoming more and more perfect. Low-voltage frequency conversion speed regulation technology with small and medium capacity has been widely used in industrial production and daily life. In recent years, with the rapid growth of the foreign frequency converter market and the influx of a large number of them into the domestic market, the demand for medium and high-voltage large-capacity AC motors continues to increase. Although the importance of frequency converters has attracted more and more attention, the medium and high voltage Freq...

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Problems solved by technology

[0005] Inverter cables are suitable for transmission systems, especially for applications such as papermaking, steel, textile, metal processing and food processing. Such cables are usually laid in harsh working environments such as heavy oil pollution, high humidity, and stagnant water. When working in a harsh environment with high humidity, water, and oil for a long time, the cable should have a certain ability to waterproof and inhibit oil penetration. Obviously, cables with ordinary sheath structures cannot meet this requirement.

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